WO2011063424A1 - Cnt-tailored composite space-based structures - Google Patents
Cnt-tailored composite space-based structures Download PDFInfo
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- WO2011063424A1 WO2011063424A1 PCT/US2010/057922 US2010057922W WO2011063424A1 WO 2011063424 A1 WO2011063424 A1 WO 2011063424A1 US 2010057922 W US2010057922 W US 2010057922W WO 2011063424 A1 WO2011063424 A1 WO 2011063424A1
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Definitions
- the present invention generally relates to carbon nanotubes (CNTs), and more specifically to CNTs incorporated in composite materials and structures.
- Hybrid composites have been used with varying degrees of success.
- the use of two or three different reinforcements within a composite has been accomplished along with the addition of aggregates and fillers used for various purposes including mechanical
- Space-based structures are subject to a number of demands on operability and efficiency. Structures housing electrical circuits can be prone to exposure to electromagnetic conduction or electromagnetic radiation, which can impair operation without adequate protection. Minor or reparable structural damage to structures can quickly progress to serious or even complete failure without prompt detection. Ice can form on critical components, altering functionality, or even causing failure, without de-icing. Shear, tensile, and compressive forces at critical locations on structures can cause failure over time without adequate structural integrity. Crack propagation can cause serious or even complete failure, if not prevented when micro-cracks initially form. Variations in temperature or other factors can affect the structure with inadequate thermal conductivity. Structures can experience sudden electrostatic buildup without adequate protection. These and additional demands placed on space-based structures result in difficulty in selecting materials suitable to address each demand.
- embodiments disclosed herein relate to tailored composite materials that include a matrix material and a CNT-infused fiber material having particular functionalities.
- embodiments disclosed herein relate to an apparatus including a structure supported by space having a composite structure having at least (1) a first carbon nanotube infused material imparting a first functionality to the structure, and (2) a second carbon nanotube infused material imparting a second functionality to the structure.
- the composite structure has additional carbon nanotube infused materials imparting additional functionalities to the structure.
- embodiments disclosed herein relate to methods including providing a structure supported by space having a composite structure having at least (1) a first carbon nanotube infused material imparting a first functionality to the structure, and (2) a second carbon nanotube infused material imparting a second functionality to the structure.
- the composite structure has additional carbon nanotube infused materials imparting additional functionalities to the structure. Carbon nanotube loading of the carbon nanotube infused materials can be selected based on the corresponding functionalities.
- Figure 1 shows a transmission electron microscope (TEM) image of a multi-walled CNT (MWNT) grown on PAN-BASED carbon fiber via a continuous chemical vapor disposition (CVD) process.
- TEM transmission electron microscope
- Figure 2 shows a TEM image of a double- walled CNT (DWNT) grown on PAN- BASED carbon fiber via a continuous CVD process.
- DWNT double- walled CNT
- Figure 3 shows a scanning electron microscope (SEM) image of CNTs growing from within the barrier coating where the CNT-forming nanoparticle catalyst was mechanically infused to the fiber material surface.
- Figure 4 shows a SEM image demonstrating the consistency in length distribution of CNTs grown on a fiber material to within 20% of a targeted length of about 40 microns.
- Figure 5 shows a low magnification SEM of CNTs on carbon fiber demonstrating the uniformity of CNT density across the fibers within about 10%.
- Figure 6 is a perspective view of a space-based apparatus in accordance with one embodiment of the present disclosure.
- Figure 7 is a cross-sectional side view of a portion of a space-based apparatus in accordance with an embodiment of the present disclosure.
- Tailored multiscale composites have been developed utilizing CNT-infused fibers.
- CNTs can be grown directly onto the surface of glass and carbon fibers in a continuous, in line process utilizing a modified CVD process, such as the one described in Applicant's copending applications, U.S. Publication Nos. 2010/0279569 and 2010/0178825, both of which are incorporated herein by reference in their entirety.
- Composite structures made with CNT- infused fiber materials have shown increased mechanical properties, specifically in shear - interlaminar and in-plane. Additionally these composite structures have improved electrical and thermal conductivity, based on the CNT loading and orientation.
- These CNT-infused fiber materials can be used in composite structures in various orientations and locations to provide custom tailored properties, including properties not available to current fiber materials.
- the CNT-infused fiber composite can employ any type of fiber substrate, including, for example, carbon, glass, alumina, silicon carbide, or Kevlar. Moreover, since many fiber- types are used in mechanical strengthening applications, the infused CNTs can perform an additional role in enhancing mechanical strength.
- a range of CNT loading in CNT-infused fiber materials can be specified to afford the functionality required for a given composite part. More specifically, the CNT loading can be varied based on the location of a particular CNT-infused fiber material within each composite structure for custom tailoring and optimization.
- the structure can have different CNT loading ranges at different locations within the CNT- infused fiber material, different CNT loading ranges in different layers (or gradients) of a given CNT-infused fiber material, or different CNT loading ranges for different CNT-infused fiber materials.
- CNT loading on the fiber and in the overall composite can be selected from a variety of ranges. For example, CNT loading in the composite can be divided into four ranges.
- the "low” range can be from 0.01% to 2%.
- the "low” range can be from approximately 0% to approximately 2%, including loadings such as 0%, 1 %, 2%, and fractions thereof.
- the “mid” range can be from approximately 2% to approximately 5%, including loadings such as 2%, 3%, 4%, 5%, and fractions thereof.
- the “high” range can be from approximately 5% to approximately 40%, including loadings such as 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, and fractions thereof.
- the “ultra-high” range may be greater than approximately 40%.
- Fiber reinforced composite structures are used in advanced space-based applications since their properties can be tailored to fulfill a given set of requirements. For example, a particular lamina stacking sequence can be used to optimize a composite beam for flexural stiffness or another sequence can be used to optimize for torsional rigidity.
- Hybrid composites which utilize two different types of reinforcement fiber, benefit from the positive contributions of each fiber towards overall composite properties whether mechanical, thermal, electrical, etc.
- CNT-infused fiber materials can include continuous fiber, chopped fiber, or woven fabrics.
- Such functionality can include electromagnetic interference (EMI) shielding, damage sensing, de-icing, mechanical properties including but not limited to interlaminar and in- plane shear strength and modulus, tensile strength and modulus, compressive strength and modulus, flexural strength and modulus, crack and propagation resistance, thermal conductivity improvements, embedded circuitry capabilities, and/or electrostatic discharge prevention.
- EMI electromagnetic interference
- high levels of CNT loading can provide EMI shielding functionality. Such functionality can prevent undesirable effects of electromagnetic conduction or electromagnetic radiation on sensitive electrical circuits, as described in Applicant's co-pending application, U.S. Publication No. 2010/0270069, which is
- EMI shielding composites can have CNT- infused fiber materials disposed in a portion of a matrix material.
- the composite can be capable of absorbing electromagnetic (EM) radiation, reflecting EM radiation, or
- the EM shielding capacity of the composite measured as EMI shielding effectiveness (SE) is in a range from between about 40 decibels (dB) to about 130 dB.
- CNTs have desirable electromagnetic absorption properties due to their high aspect ratio.
- the CNTs in the composites can be capable of absorbing a broad range of EM radiation frequencies, and dissipating the absorbed energy to an electrical ground and/or as heat, for example.
- the CNTs can also reflect EM radiation. Moreover, for EMI shielding applications, any combination of absorption and reflectance can be useful as long as transmittance of the electromagnetic radiation is minimized.
- composites can operate by reducing and/or preventing substantial electromagnetic interference.
- the EMI shielding composites can improve the shielding characteristics of materials already employed in EMI shielding applications.
- CNT-infused fibers can impart improved EMI shielding of dielectric as well as conductive composites, resulting in the ability to use low weight, high strength composites. Some such composites can have been previously limited in application due to their inherently poor EMI shielding capabilities.
- EMI shielding composites can provide an absorbent surface that is nearly a black body across different sections of the electromagnetic spectrum including visible, infrared (IR) and other portions of various radar bands.
- the CNT density on the fiber material can be controlled.
- the refractive index of the CNT-infused fiber material can be tuned to closely match the refractive index of air. According to Fresnel's law, this is when reflectance would be minimized.
- the composites can also be designed to minimize transmittance through the EMI shielding layer. In other words, absorption is useful to the extent that it can provide EMI shielding.
- a composite of the present invention can have multiple absorbing and/or reflecting layers comprising CNT-infused fiber materials.
- the fiber material itself can act as a scaffold that organizes the CNTs in an array that provides an overall composite with sufficient CNT density to create effective percolation pathways for dissipation of the energy upon EM radiation absorption.
- the infused CNTs can be tailored to have a uniform length, density, and controlled orientation on the fiber material and in the overall composite to maximize EM radiation absorption.
- the composites can utilize fiber materials and/or matrices that are either conducting or insulating.
- the EMI shielding composites can be integrated as part of the surface structure of the article in which it is used. In some embodiments, an entire article can function as an EMI shield, not just the surface.
- CNT- infused fiber materials can be employed as a coating for pre-fabricated composites for use in EMI shielding applications.
- Methods of manufacturing an EMI shielding composite can include disposing a CNT-infused fiber material in a portion of a matrix material with a controlled orientation of the CNT-infused fiber material within the matrix material, and curing the matrix material.
- the controlled orientation of the CNT-infused fiber material can control the relative orientation of CNTs infused thereon within the overall composite structure.
- the manufacturing process to create CNT-infused fibers can be amenable to large scale continuous processing. In the process, CNTs are grown directly on carbon, glass, ceramic, or similar fiber materials of spoolable dimensions, such as tows or rovings.
- the nature of the CNT growth is such that a dense forest is deposited at lengths that can be tuned between about 5 microns to about 500 microns long, the length being controlled by various factors as described below.
- This forest can be oriented such that the CNTs are perpendicular to the surface of each individual filament of a fiber material thus providing radial coverage.
- the CNTs can be further processed to provide an orientation that is parallel to the axis of the fiber material.
- the resulting CNT-infused fiber materials can be employed in the as- manufactured form, or can be woven into fabric goods for use in producing the EMI shielding composites used in EMI shielding applications.
- a panel can include the EMI shielding composite and can be adaptable to interface with a device for use in EMI shielding applications. Such a panel can be further equipped with an electrical ground.
- low levels of CNT loading can provide damage sensing functionality.
- the CNTs can provide a percolation network that can be instrumented to measure changes in resistance or signal transmission. Such measured changes can provide information on the amount of damage the composite has sustained.
- damage sensing functionality can be in the form of a skin or structure, either fabric, or multi-directional tow- based or chopped fiber, as described in Applicant's co-pending application, Serial No. 12/900,405, filed October 7, 2010, which is incorporated herein by reference in its entirety.
- Damage sensing composites can include CNT-infused fibers in at least a portion of a matrix material. The composites can be utilized in any platform for monitoring the integrity of composite materials in structural components.
- Such damage sensing composites can utilize a variable source signal, while taking advantage of a scalable manufacturing process, to create a damage detection system having a high degree of control and sensitivity.
- Composites can be tailored to a specific applications and can be used to 1) detect types of damage to the composite through in situ monitoring, including monitoring of stresses on the materials prior, during, and/or after use; and 2) reduce the likelihood of catastrophic failure by providing structural enhancement and real time assessment of structural integrity.
- One component of the composite materials is the CNT-infused fiber. Having CNTs infused on a fiber carrier facilitates manufacturing of large composite structures using conventional fiber-reinforced composite manufacture techniques to incorporate the CNT element throughout the composite or in strategic portions of a composite article.
- CNT density and distribution is tightly controlled with CNT-infused fibers compared to loose CNTs, the amount of CNTs can be substantially reduced.
- having the CNTs on fibers allows for synergistic mechanical strength enhancement due to the CNT-fiber organizational hierarchy, allowing the CNTs to perform a dual role in both sensing damage as well as contributing to structural integrity by assisting in redistribution of load bearing stresses.
- the fiber carrier also facilitates strategic placement of CNTs throughout an entire 3-dimensional article or in a 2- dimensional "skin.” This strategic placement allows control of conductivity along the fiber axis and the transverse direction.
- the properties of the composite can be modulated by control of CNT density, length, placement, and alignment, for example.
- composites can be tailored to a specific application and/or to detect any type of damage, as well as reduce the likelihood of damage.
- the infused CNTs can affect the electrical properties of the composite and can serve to create percolation pathways that allow continuous, non- continuous, or intermittent monitoring of the stress on the composite material.
- the resting state of a composite can have associated percolation pathways with measurable electrical properties such as resistance, for example, that can be monitored by an appropriately positioned pair of sensors, such as an electrode pair.
- resistance for example, that can be monitored by an appropriately positioned pair of sensors, such as an electrode pair.
- Composites made using the CNT-infused fibers bearing CNTs tailored for improved electrical properties can be used in damage sensing applications.
- Composites can also be used to improve composite strength.
- a CNT-infused fiber can be used in specific locations to improve composite strength as well as provide a means for damage detection at important structural components.
- One such application is in composite lap joints where one composite structure is bound to another composite structure (one structure can be perpendicular or parallel to the other).
- the bounded interface between the structures is of particular interest because it is considered the weak part of the structure.
- Utilizing the CNT-infused structure at this location allows for improved Interlaminar Shear Strength (ILSS) as well as the ability to provide damage detection.
- ILSS Interlaminar Shear Strength
- Composites can be used in a method of detecting stresses within the composite material that includes monitoring modulated electrical signals (waveform along with amplitude and frequency) and assessing structural integrity with improved detection resolution and sensitivity.
- Amplitude measurements can be used to measure strain.
- Phase can be used to monitor crack propagation.
- Frequency can be used to identify crack size.
- a network of electrodes can be engaged or otherwise integrated with sensing circuitry that can be used to measure and map location of strain, fatigue, damage, and cracks in the composite.
- Composites, systems, and methods integrating damage sensing functionality can be used in a variety of industries, for example, from the commercial airplane industry to ballistic armor damage detection on tanks and other military armored vehicles.
- CNT loading can provide de-icing functionality in some applications.
- the amount of CNTs can be tailored to the particular structure, or portion of the structure, based on the required resistance, as described in Applicant's co-pending application, Serial No. 12/767,719, filed April 26, 2010, which is incorporated herein by reference in its entirety.
- De-icing composites can have a matrix material and a carbon nanotube CNT-infused fiber material.
- the CNT-infused fiber material can be disposed throughout a portion of the matrix material and the composite structure adapted for application of a current via the CNT-infused fiber material to provide heating of the matrix material to de-ice or prevent the formation of ice on a surface of the composite structure.
- the CNTs of the CNT-infused fiber can alter the conductance of the bulk matrix material by providing percolation conductivity.
- the percolation conductance of the composite structures can be the result of CNT-to-CNT point contact, CNT interdigitation/overlap, or combinations thereof. While the CNTs provide percolation conductance pathways, the fiber carrier to which they are fused provides control of 1) CNT orientation and degree of anisotropy, 2) CNT concentration, and 3) CNT location within the bulk matrix material. Incorporation of CNTs infused to a fiber, within the composite materials allows for the use of the composite structure itself as a resistive heating element.
- CNTs are introduced at the fiber level where mass percentages of greater than 3% can be achieved.
- the CNT-infused fiber material can be used with conventional matrices and can be optionally doped with additional CNTs that are not infused to the fiber to create composite structures.
- the resistivity of the structure can be adjusted and controlled to provide the appropriate thermal/conductive properties for using the material as a resistive heating element.
- the CNT-based composite material can be used as either a surface layer for targeted areas of a structure (such as the wing, fuselage, and tail assembly) or over the entire composite structure, where it can be used to make any article for use in deicing applications.
- the CNT-infused fiber composite can be a composite material that is itself a resistive heating element.
- the metal spray coating "heater mat" approach employed in the art for de-icing applications uses a manufacturing processes that increases cost and complexity, metal spray coatings used over large surface areas of a composite structure can also increase the overall structure weight. Additionally, the use of metal as the resistive heating element brings the risk of galvanic corrosion (which is addressed by using glass layers - a weak interface within the structure), and after repeated use the risk of structure failures.
- the metal coating is not a similar material within the composite structure, it can act as a weak point within the composite structure.
- the incorporation of CNTs in composite structures reduces or eliminates each of these problems. Since traditional composite materials are used with CNTs, the methods for manufacturing the composite structures remain virtually unchanged. Methods used to incorporate CNTs on composite fibers have also been developed that result in low cost material solutions, which combined with the similar manufacturability result in a simple low cost solution (with no weight increase ⁇ in fact, weight could be reduced if CNT/fiber materials were used as the structural component as well). Since metals are not used to provide the electrical path, galvanic corrosion can be avoided using CNTs.
- the material used to incorporate the CNTs in a fiber if used as a resistive heating layer, it will not result in a weakening in the overall structure.
- a large circuit can be created when an electrical potential is applied, such that the CNTs act as a large resistive heater to prevent or remove icy conditions.
- Such construction can avoid the need for external heating.
- Mid-range levels can be chosen because too few CNTs would require high voltage potential to create a current, whereas too many CNTs would not offer enough resistance to act as a heating element.
- Such de-icing formulations can be in the form of one or more patches of fabric with CNT coated leads, or can be simply embedded tows providing the current pathway.
- mid-range levels of CNT loading can provide shear strength functionality.
- the CNTs can afford greater shear strength of the matrix, as well as improve the load transfer between filaments.
- the composite can be comprised of unidirectional fibers, chopped fibers, or fabric.
- Some structures can include a composite structure to handle high shear loading in the central planes, but can be electrically insulated through the thickness.
- CNT-infused fiber materials can be used for the central lamina of a tailored composite to improve the maximum shear strength characteristics.
- Unmodified fibers can be used as the surface layers to provide the electrical insulation properties.
- low levels of CNT loading can provide tensile strength functionality.
- the baseline filament strength can be augmented with the strength of the CNTs themselves.
- the low CNT loading can accommodate high fiber packing, leading to a stronger composite given that the tensile strength of a composite in the fiber direction is directly proportional to the amount of fibers. Close packing of the filaments can also enhance the entanglement between the CNTs, which can increase the effectiveness of the interfilament load transfer.
- advanced processing of the CNT material can align the CNTs in the direction of the substrate filaments, to directly utilize the strength of the CNTs to increase overall tensile strength of the composite in the fiber direction.
- Low levels of CNT loading can provide compressive strength functionality in some applications.
- the baseline filament strength is augmented with the strength of the CNTs themselves.
- the low CNT loading can accommodate high fiber packing, leading to a stronger composite given that the compressive strength of a composite in the fiber direction is directly proportional to the amount of fibers. Close packing of the filaments can also enhance the entanglement between the CNTs, which can increase the effectiveness of the interfilament load transfer. Additionally, the CNTs can increase the shear stiffness and strength of the matrix and thus help prevent micro-buckling of the filaments.
- mid-range levels of CNT loading can provide crack resistance functionality.
- the CNTs can toughen the matrix, which is commonly the weak link.
- a crack generally travels more easily through the matrix than through the filaments.
- the CNTs can function as crack-arresting mechanisms.
- Thermally conductive composites can have a matrix material and a carbon nanotube CNT- infused fiber material.
- the CNT-infused fiber material can be disposed throughout a portion of the matrix material and the composite structure adapted for application of a current via the CNT-infused fiber material to provide thermal conductivity of the matrix material.
- the CNTs of the CNT-infused fiber can alter the conductance of the bulk matrix material by providing percolation conductivity.
- the percolation conductance of the composite structures can be the result of CNT-to-CNT point contact, CNT
- CNTs provide percolation conductance pathways
- the fiber carrier to which they are fused provides control of 1) CNT orientation and degree of anisotropy, 2) CNT concentration, and 3) CNT location within the bulk matrix material.
- Incorporation of CNTs infused to a fiber, within the composite materials allows for the use of the composite structure itself as a thermally conductive element.
- CNTs are introduced at the fiber level where mass percentages of greater than 3% can be achieved.
- the CNT-infused fiber material can be used with conventional matrices and can be optionally doped with additional CNTs that are not infused to the fiber to create composite structures.
- the resistivity of the structure can be adjusted and controlled to provide the appropriate thermal/conductive properties for using the material as a thermally conductive element.
- the CNT-based composite material can be used as either a surface layer for targeted areas of a structure or over the entire composite structure, where it can be used to make any article for use in thermal applications.
- the CNT-infused fiber composite can be a composite material that is itself a resistive heating element.
- the CNT-infused fiber composite can employ any type of fiber substrate, including, for example, carbon, glass, alumina, silicon carbide, or Kevlar. Moreover, since many fiber-types are used in mechanical strengthening applications, the infused CNTs can perform an additional role in enhancing mechanical strength.
- thermally conductive formulations can be in the form of one or more patches of fabric with CNT coated leads, or can be simply embedded tows providing the current pathway.
- High levels of CNT loading can provide embedded circuitry functionality in particular applications.
- the CNTs can provide the electrical pathway through which signals can be transferred.
- mid-range levels of CNT loading can provide electrostatic discharge (ESD) functionality.
- ESD electrostatic discharge
- the electrical and thermal conductivity of the material can provide a resistance to charge buildup by providing a pathway for the electrons to flow.
- Some space-based systems can incorporate the above-mentioned functionality into composite structures in varying combinations.
- satellites, rockets, and shuttles can incorporate one or more composite structures to provide enhanced functionality.
- a composite component can be subjected to a variety of loadings.
- the component can have a joint that carries a shear load while another portion supports a compressive load.
- the portion subject to shear and susceptible to delamination failure can be made mid-range CNT loaded material, while the portion supporting tensile load can utilize low CNT loaded material.
- the CNT-infused fiber materials can be produced in a continuous fashion with precise control of the CNT loading, CNT length, and CNT orientation.
- Other hybrid composite systems incorporating nanoscale reinforcement require additional processing steps to properly disperse the nanoparticles of nanotubes into the matrix.
- the ability to create a lamina with specific CNT loading different from the next layer can be achieved through a CNT-infusion process.
- the CNT-infused fiber materials can be incorporated into a composite using the same manufacturing techniques used for un-processed glass and carbon filaments without the need for extra processing steps including, for example, orienting the CNTs or sectional layering in multilayered composites.
- the CNTs are infused to a fiber carrier, the issues associated homogeneous incorporation of CNTs, CNT bundling, agglomeration, and the like, are alleviated.
- CNT-infused fiber materials allow the composite structure to have larger CNT loading than can be achieved by simply mixing CNTs directly with the composite matrix material.
- the fiber portion can vary between about 35% to about 60% with the matrix range changing to about 40% to about 65%.
- the various ratios can alter the properties of the overall composite, which can be tailored to target one or more desired characteristics.
- the properties of CNTs lend themselves to fibers that are reinforced with them. Utilizing these enhanced fibers in tailored composites similarly imparts increases that will vary according to the fiber fraction, but can still greatly alter the properties of tailored composites compared to those known in the art.
- Figures 1-5 show TEM and SEM images of fiber materials.
- Figures 1 and 2 show TEM images of MWNTs and DWNTs, respectively, that were prepared on an PAN-BASED carbon fiber in a continuous process.
- Figure 3 shows a scanning electron microscope (SEM) image of CNTs growing from within the barrier coating after the CNT-forming nanoparticle catalyst was mechanically infused to a fiber material surface.
- Figure 4 shows a SEM image demonstrating the consistency in length distribution of CNTs grown on a carbon fiber material to within 20% of a targeted length of about 40 microns.
- Figure 5 shows a low magnification SEM of CNTs on carbon fiber demonstrating the uniformity of CNT density across the fibers within about 10%.
- CNT-infused fiber materials can be used in a myriad of applications.
- space-based apparatus such as satellites can include space- based structures, such as buses.
- Composites are an ideal choice for satellite constriction given that weight is a critical design parameter. The cost of launching a satellite is directly proportional to the mass. If the structure can be constructed out of a lighter material, then the payload can be larger (e.g. include more instrumentation).
- the satellite 10 includes several features, each with a specific function and specific requirements. Accordingly, the composites must perform various functions, depending on the location within the structure.
- the primary structure (or bus) 12 In the harsh environment of space, whether low earth orbit, middle earth orbit, or geosynchronous orbit, the primary structure (or bus) 12 must withstand the impacts from micrometeoroids and debris as well as be able to conduct incident heat without developing a surface charge.
- Mid-range CNT loading materials can provide a conductive media resistant to shear, which would also prevent a dangerous surface charge from developing.
- Satellites generally house sensitive equipment that must be protected from debris as well as incident radiation.
- an outer layer 14 of high CNT loading material can be used to absorb incident electromagnetic radiation.
- a damage sensing layer 16 of low CNT loading material on the surface of exposed composite parts can be utilized to provide feedback on the health of the structure of the satellite 10. This damage sensing functionality is also important given that these satellites experience thermal cycling, which eventually causes micro-cracking and other fatigue effects.
- an inner layer 18 of low CNT loading material can provide stiffness and dimensional stability to the satellite 10.
- Any of a number of different space-based structures can be constructed of composites and CNT-infused fiber materials designed or chosen based on CNT loading associated with various functionalities.
- Such functionalities can include, but are not limited to EMI shielding, damage sensing, de-icing, mechanical properties including but not limited to interlaminar and in-plane shear strength and modulus, tensile strength and modulus, compressive strength and modulus, flexural strength and modulus, crack and propagation resistance, thermal conductivity improvements, and electrostatic discharge prevention.
- the location for application of the CNT-infused fiber material to a particular location on the space-based structure can be selected based on the specific conditions of the structure.
- CNT-infused fiber material with high CNT loading can be used certain locations on the structure. More particularly, high CNT loading can be useful (1) in locations prone to exposure to EMI, because high CNT loading provides EMI shielding, (2) in locations where thermal conductivity is desired, because high CNT loading enhances thermal conductivity, and/or (3) in locations proximate electric circuitry, because high CNT loading facilitates transfer of electric signals.
- CNT-infused fiber material with mid-range CNT loading can be used in particular locations on the structure, such as (1) in locations prone to ice formation, because mid-range CNT loading provides appropriate resistance/conductivity for use in de-icing, (2) in locations prone to exposure to shear forces, because mid-range CNT loading enhances shear strength, (3) in locations prone to cracking, because mid-range CNT loading enhances crack resistance, and/or (4) in locations prone to buildup of electrical charge, because mid- range CNT loading prevents electrostatic discharge.
- CNT-infused fiber material with low CNT loading can be used in certain locations on the structure, such as (1) in locations prone to damage, because low CNT loading facilitates damage sensing, (2) in locations prone to tensile forces, because low CNT loading enhances tensile strength, and/or (3) in locations prone to compressive forces, because low CNT loading enhances compressive strength.
- methods of designing, selecting, constructing, or otherwise ensuring particular functionalities of a space-based structure can involve selecting the structure and identifying the desired functionalities. Once the desired functionalities have been determined, CNT-infused fiber materials with CNT loading ranges can be selected based on the corresponding desired functionalities.
- Providing a space-based structure comprising a composite material can involve purchase, fabrication, or other means. If the structure is being fabricated, CNT-infused fiber materials can be formed as part of the structure. In other instances, CNT-infused fiber materials can be applied to the pre-formed composite structure. In either scenario, a first CNT-infused fiber material and a second CNT- infused fiber material are provided.
- the first CNT-infused fiber material has a first range of CNT loading and is selected to provide the structure with a first functionality.
- the second CNT-infused fiber material has a second range of CNT loading and is selected to provide the structure with a second functionality.
- the first CNT-infused fiber material is applied to the structure at a first location and the second CNT-infused fiber material is applied to the structure at a second location.
- the first location and the second location are remote from each other, but still part of the structure. In other instances, the first location and the second location can be very close, overlap, or even occupy the same location of the structure.
- the first CNT-infused fiber material can have a high CNT loading useful for EMI shielding and the second CNT-infused fiber material can have a low CNT loading useful for damage sensing.
- the second material can be applied directly to the structure, with the first material being applied to the second material as a separate layer.
- a space-based structure has electrical resistance, damage sensing, de-icing, mechanical properties including but not limited to interlaminar and in-plane shear strength and modulus, tensile strength and modulus, compressive strength and modulus, flexural strength and modulus, crack and propagation resistance, electrostatic discharge prevention, electromagnetic interference shielding, thermal conductivity, and transfer of electric signals functionalities.
- a space-based structure has fewer than all of these functionalities.
- some space-based structures have electromagnetic interference shielding, damage sensing, and strength functions or electrostatic discharge resistance, crack resistance, and de-icing functionalities.
- a space- based structure can have any one, two, three, four, five, six, seven, eight, nine, ten, or eleven functionalities selected from the following: electrical resistance, damage sensing, de-icing, mechanical properties including but not limited to interlaminar and in-plane shear strength and modulus, tensile strength and modulus, compressive strength and modulus, flexural strength and modulus, crack and propagation resistance, electrostatic discharge prevention, electromagnetic interference shielding, thermal conductivity, and transfer of electric signals functionalities.
- a space-based structure may have additional functionalities not listed above.
- the first amount and second amount of CNTs are different in different areas of a particular structure. This can be accompanied by a change in the CNT type or not. Thus, varying the density of CNTs can be used to alter the properties of the original fiber material, even if the CNT type remains unchanged.
- CNT type can include CNT length and the number of walls, for example.
- the first amount and the second amount are the same. If different properties are desirable in this case along the two different stretches of the spoolable material, then the CNT type can be changed, such as the CNT length. For example, longer CNTs can be useful in electrical/thermal applications, while shorter CNTs can be useful in mechanical strengthening applications.
- the first type of CNT and the second type of CNT can be the same, in some embodiments, while the first type of CNT and the second type of CNT can be different, in other embodiments.
- the first property and the second property can be the same, in some embodiments.
- the EMI shielding property can be the property of interest addressed by the first amount and type of CNTs and the second amount and type of CNTs, but the degree of change in this property can be different, as reflected by differing amounts, and/or types of CNTs employed.
- the first property and the second property can be different. Again, this can reflect a change in CNT type.
- the first property can be mechanical strength with shorter CNTs
- the second property can be electrical/thermal properties with longer CNTs.
- One skilled in the art will recognize the ability to tailor the properties of the fiber material through the use of different CNT densities, CNT lengths, and the number of walls in the CNTs, such as single-walled, double- walled, and multi-walled, for example.
- a first amount of CNTs on a fiber material exhibits a group of properties that differs from a first group of properties exhibited by the fiber material itself. That is, selecting an amount that can alter one or more properties of the fiber material, such as tensile strength.
- the first group of properties and second group of properties can include at least one of the same properties, thus representing enhancing an already existing property of the fiber material.
- CNT infusion can impart a second group of properties to the CNT-infused fiber material that is not included among the first group of properties exhibited by the fiber material itself.
- CNT-infused carbon and glass fiber materials have been described in Applicant's copending applications, U.S. Publication Nos. 2010/0279569 and 2010/0178825, both of which are incorporated herein by reference in their entirety.
- Such CNT-infused fiber materials are exemplary of the types that can be used as a reinforcing material in a tailored composite.
- Other CNT-infused fiber materials can include metal fibers, ceramic fibers, and organic fibers, such as aramid fibers.
- fiber materials are modified to provide a layer (typically no more than a monolayer) of CNT-initiating catalyst nanoparticles on the fiber.
- the catalyst-laden fiber is then exposed to a CVD-based process used to grow CNTs continuously, in line.
- the CNTs grown are infused to the fiber material.
- the resultant CNT-infused fiber material is itself a composite architecture.
- the CNT-infused fiber material can be tailored with specific types of CNTs on the surface of fiber material such that various properties can be achieved.
- the electrical properties can be modified by applying various types, diameter, length, and density CNTs on the fiber.
- CNTs of a length that can provide proper CNT to CNT bridging are needed for percolation pathways that improve composite conductivity. Because fiber spacing is typically equivalent to or greater than one fiber diameter, from about 5 to about 50 microns, CNTs can be at least this length to achieve effective electrical pathways. Shorter length CNTs can be used to enhance structural properties.
- a CNT-infused fiber material includes CNTs of varying lengths along different sections of the same fiber material.
- such multifunctional CNT-infused fiber materials enhance more than one property of the composite in which they are incorporated.
- a first amount of CNTs is infused to the fiber material. This amount is selected such that the value of at least one property selected from the group consisting of tensile strength, Young's Modulus, shear strength, shear modulus, toughness, compression strength, compression modulus, density, Electromagnetic wave
- absorptivity/reflectivity, acoustic transmittance, electrical conductivity, and thermal conductivity of the CNT-infused fiber material differs from the value of the same property of the fiber material itself. Any of these properties of the resultant CNT-infused fiber material can be imparted to the final composite.
- Tensile strength can include three different measurements: 1) Yield strength which evaluates the stress at which material strain changes from elastic deformation to plastic deformation, causing the material to deform permanently; 2) Ultimate strength which evaluates the maximum stress a material can withstand when subjected to tension, compression or shearing; and 3) Breaking strength which evaluates the stress coordinate on a stress-strain curve at the point of rupture.
- Composite shear strength evaluates the stress at which a material fails when a load is applied perpendicular to the fiber direction.
- Compression strength evaluates the stress at which a material fails when a compressive load is applied.
- MWNTs in particular, have the highest tensile strength of any material yet measured, with a tensile strength of 63 GPa having been achieved. Moreover, theoretical calculations have indicated possible tensile strengths of CNTs of about 300 GPa. Thus, CNT-infused fiber materials are expected to have substantially higher ultimate strength compared to the parent fiber material. As described above, the increase in tensile strength will depend on the exact nature of the CNTs used as well as the density and distribution on the fiber material. CNT-infused fiber materials can exhibit a two to three times increase in tensile properties, for example. Exemplary CNT-infused fiber materials can have as high as three times the shear strength as the parent unfunctionalized fiber material and as high as 2.5 times the
- Young's modulus is a measure of the stiffness of an isotropic elastic material. It is defined as the ratio of the uniaxial stress over the uniaxial strain in the range of stress in which Hooke's Law holds. This can be experimentally determined from the slope of a stress- strain curve created during tensile tests conducted on a sample of the material.
- Electrical conductivity or specific conductance is a measure of a material's ability to conduct an electric current.
- CNTs with particular structural parameters such as the degree of twist, which relates to CNT chirality can be highly conducting, thus exhibiting metallic properties.
- a recognized system of nomenclature M. S. Dresselhaus, et al. Science of Fullerenes and CNTs, Academic Press, San Diego, CA pp. 756-760, (1996) has been formalized and is recognized by those skilled in the art with respect to CNT chirality.
- CNTs are distinguished from each other by a double index (n,m) where n and m are integers that describe the cut and wrapping of hexagonal graphite so that it makes a tube when it is wrapped onto the surface of a cylinder and the edges are sealed together.
- n and m are integers that describe the cut and wrapping of hexagonal graphite so that it makes a tube when it is wrapped onto the surface of a cylinder and the edges are sealed together.
- CNT diameter also effects electrical conductivity.
- CNT diameter can be controlled by use of controlled size CNT-forming catalyst nanoparticles.
- CNTs can also be formed as semi-conducting materials. Conductivity in MWNTs can be more complex. Interwall reactions within MWNTs can redistribute current over individual tubes non-uniformly. By contrast, there is no change in current across different parts of metallic SWNTs.
- CNTs also have very high thermal conductivity, comparable to diamond crystal and in-plane graphite sheet.
- CNTs infused on the fibers can be any of a number of cylindrically- shaped allotropes of carbon of the fullerene family including SWNTs, DWNTs, and MWNTs. CNTs can be capped by a fullerene-like structure or open-ended. CNTs include those that encapsulate other materials.
- space-based means generally capable of being supported in space while in an operational state. Certain structures are considered space-based, but are also considered land-based, sea-based, or air-based. For example, a cargo container can be space-based, land-based, sea-based, and air-based. Likewise, certain vehicles can fly both in the air and in space.
- the term "infused” means bonded and "infusion” means the process of bonding. Such bonding can involve direct covalent bonding, ionic bonding, pi-pi, and/or van der Waals force-mediated physisorption.
- the CNTs can be directly bonded to the fiber material. Bonding can be indirect, such as the CNT infusion to the fiber material via a barrier coating and/or an intervening transition metal nanoparticle disposed between the CNTs and fiber material.
- the CNTs can be "infused” to the fiber material directly or indirectly as described above. The particular manner in which a CNT is "infused" to a fiber material is referred to as a "bonding motif.”
- the CNTs infused on portions of the fiber material are generally uniform in length.
- uniform in length refers to length of CNTs grown in a reactor.
- Uniform length means that the CNTs have lengths with tolerances of plus or minus about 20% of the total CNT length or less, for CNT lengths varying from between about 1 micron to about 500 microns. At very short lengths, such as 1-4 microns, this error can be in a range from between about plus or minus 20% of the total CNT length up to about plus or minus 1 micron, that is, somewhat more than about 20% of the total CNT length.
- the CNTs infused on portions of the fiber material are generally uniform in distribution as well.
- uniform in distribution refers to the consistency of density of CNTs on a fiber material.
- Uniform distribution means that the CNTs have a density on the fiber material with tolerances of plus or minus about 10% coverage defined as the percentage of the surface area of the fiber covered by CNTs. This is equivalent to ⁇ 1500 CNTs/ ⁇ 2 for an 8 nm diameter CNT with 5 walls. Such a figure assumes the space inside the CNTs as fillable.
- the present disclosure is directed, in part, to CNT-infused fiber materials.
- the infusion of CNTs to the fiber material can serve many functions including, for example, as a sizing agent to protect against damage from moisture, oxidation, abrasion, and compression.
- a CNT-based sizing can also serve as an interface between the fiber material and a matrix material in a composite.
- the CNTs can also serve as one of several sizing agents coating the fiber material.
- CNTs infused on a fiber material can alter various properties of the fiber material, such as thermal and/or electrical conductivity, and/or tensile strength, for example.
- the processes employed to make CNT-infused fiber materials provide CNTs with substantially uniform length and distribution to impart their useful properties uniformly over the fiber material that is being modified. Some such processes are suitable for the generation of CNT-infused fiber materials of spoolable dimensions.
- the present disclosure is also directed, in part, to CNT-infused fiber materials.
- Various processes can be applied to nascent fiber materials generated de novo before, or in lieu of, application of a typical sizing solution to the fiber material.
- the processes can utilize a commercial fiber material, for example, a carbon tow, that already has a sizing applied to its surface.
- the sizing can be removed to provide a direct interface between the fiber material and the synthesized CNTs, although a barrier coating and/or transition metal particle can serve as an intermediate layer providing indirect infusion, as explained further below.
- a barrier coating and/or transition metal particle can serve as an intermediate layer providing indirect infusion, as explained further below.
- Some processes allow for the continuous production of CNTs of uniform length and distribution along spoolable lengths of tow, tapes, fabrics, and other 3D woven structures. While various mats, woven and non-woven fabrics and the like can be functionalized by certain processes, it is also possible to generate such higher ordered structures from the parent tow, yarn or the like after CNT functionalization of these parent materials. For example, a CNT-infused woven fabric can be generated from a CNT-infused carbon fiber tow.
- fiber material refers to any material that has filaments or bundles of filaments as its elementary structural component.
- the term encompasses fibers, filaments, yarns, tows, tapes, woven and non-woven fabrics, plies, mats, and the like.
- spoolable dimensions refers to fiber materials having at least one dimension that is not limited in length, allowing the material to be stored on a spool or mandrel. Fiber materials of "spoolable dimensions" have at least one dimension that indicates the use of either batch or continuous processing for CNT infusion as described herein.
- spools having high weight usually a 3k/12K tow
- spools for example, although larger spools can require special order.
- Certain processes operate readily with 5 to 20 lb. spools, although larger spools are usable.
- a pre- process operation can be incorporated that divides very large spoolable lengths, for example 100 lb. or more, into easy to handle dimensions, such as two 50 lb spools.
- carbon nanotube refers to any of a number of cylindrically-shaped allotropes of carbon of the fullerene family including single- walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs), multi-walled carbon nanotubes (MWNTs).
- SWNTs single- walled carbon nanotubes
- DWNTs double-walled carbon nanotubes
- MWNTs multi-walled carbon nanotubes
- Carbon nanotubes can be capped by a fullerene-like structure or open-ended. Carbon nanotubes include those that encapsulate other materials.
- transition metal refers to any element or alloy of elements in the d-block of the periodic table.
- transition metal also includes salt forms of the base transition metal element such as oxides, carbides, nitrides, and the like.
- nanoparticle or NP (plural NPs), or grammatical equivalents thereof refers to particles sized between about 0.1 to about 100 nanometers in equivalent spherical diameter, although the NPs need not be spherical in shape. Transition metal NPs, in particular, serve as catalysts for CNT growth on the fiber materials.
- sizing agent refers collectively to materials used in the manufacture of fibers as a coating to protect the integrity of the fibers, provide enhanced interfacial interactions between a fiber and a matrix material in a composite, and/or alter and/or enhance particular physical properties of a fiber.
- CNTs infused to fiber materials behave as a sizing agent.
- matrix material refers to a bulk material than can serve to organize sized CNT-infused fiber materials in particular orientations, including random orientation.
- the matrix material can benefit from the presence of the CNT-infused fiber material by imparting some aspects of the physical and/or chemical properties of the CNT- infused fiber material to the matrix material.
- the term "material residence time” refers to the amount of time a discrete point along a fiberous material of spoolable dimensions is exposed to CNT growth conditions during a CNT infusion process. This definition includes the residence time when employing multiple CNT growth chambers.
- linespeed refers to the speed at which a fiber material of spoolable dimensions can be fed through the CNT infusion process, where linespeed is a velocity determined by dividing CNT chamber(s) length by the material residence time.
- the present disclosure provides a composition that includes a CNT-infused fiber material.
- the CNT-infused fiber material includes a fiber material of spoolable dimensions, a barrier coating conformally disposed about the fiber material, and CNTs infused to the fiber material.
- the infusion of CNTs to the fiber material can include a bonding motif of direct bonding of individual CNTs to the fiber material or indirect bonding via a transition metal NP, barrier coating, or both.
- transition metal NPs which serve as a CNT-forming catalyst, can catalyze CNT growth by forming a CNT growth seed structure.
- the CNT-forming catalyst can remain at the base of the fiber material, locked by the barrier coating, and infused to the surface of the fiber material.
- the seed structure initially formed by the transition metal nanoparticle catalyst is sufficient for continued non-catalyzed seeded CNT growth without allowing the catalyst to move along the leading edge of CNT growth, as often observed in the art.
- the NP serves as a point of attachment for the CNT to the fiber material.
- the presence of the barrier coating can also lead to further indirect bonding motifs.
- the CNT forming catalyst can be locked into the barrier coating, as described above, but not in surface contact with fiber material.
- a stacked structure with the barrier coating disposed between the CNT forming catalyst and fiber material results.
- the CNTs formed are infused to the fiber material.
- some barrier coatings will still allow the CNT growth catalyst to follow the leading edge of the growing nanotube. In such cases, this can result in direct bonding of the CNTs to the fiber material or, optionally, to the barrier coating.
- the infused CNT is robust and allows the CNT-infused fiber material to exhibit CNT properties and/or characteristics.
- the elevated temperatures and/or any residual oxygen and/or moisture that can be present in the reaction chamber can damage the fiber material.
- the fiber material itself can be damaged by reaction with the CNT-forming catalyst itself. That is the fiber material can behave as a carbon feedstock to the catalyst at the reaction temperatures employed for CNT synthesis. Such excess carbon can disturb the controlled introduction of the carbon feedstock gas and can even serve to poison the catalyst by overloading it with carbon.
- the barrier coating employed in the present disclosure is designed to facilitate CNT synthesis on fiber materials. Without being bound by theory, the coating can provide a thermal barrier to heat degradation and/or can be a physical barrier preventing exposure of the fiber material to the environment at the elevated temperatures. Alternatively or additionally, it can minimize the surface area contact between the CNT-forming catalyst and the fiber material and/or it can mitigate the exposure of the fiber material to the CNT-forming catalyst at CNT growth temperatures.
- compositions having CNT-infused fiber materials are provided in which the CNTs are substantially uniform in length.
- the residence time of the fiber material in a CNT growth chamber can be modulated to control CNT growth and ultimately, CNT length. This provides a means to control specific properties of the CNTs grown.
- CNT length can also be controlled through modulation of the carbon feedstock and carrier gas flow rates and reaction temperature. Additional control of the CNT properties can be obtained by controlling, for example, the size of the catalyst used to prepare the CNTs. For example, 1 nm transition metal nanoparticle catalysts can be used to provide SWNTs in particular.
- the CNT growth processes employed are useful for providing a CNT- infused fiber material with uniformly distributed CNTs on fiber materials while avoiding bundling and/or aggregation of the CNTs that can occur in processes in which pre-formed CNTs are suspended or dispersed in a solvent solution and applied by hand to the fiber material.
- Such aggregated CNTs tend to adhere weakly to a fiber material and the characteristic CNT properties are weakly expressed, if at all.
- the maximum distribution density, expressed as percent coverage that is, the surface area of fiber covered, can be as high as about 55% assuming about 8 nm diameter CNTs with 5 walls. This coverage is calculated by considering the space inside the CNTs as being "fillable" space.
- Various distribution/density values can be achieved by varying catalyst dispersion on the surface as well as controlling gas composition and process speed. Typically, for a given set of parameters, a percent coverage within about 10% can be achieved across a fiber surface. Higher density and shorter CNTs are useful for improving mechanical properties, while longer CNTs with lower density are useful for improving thermal and electrical properties, although increased density is still favorable. A lower density can result when longer CNTs are grown. This can be the result of the higher temperatures and more rapid growth causing lower catalyst particle yields.
- compositions of the disclosure having CNT-infused fiber materials can include a fiber material such as an individual filament, a fiber yarn, a fiber tow, a tape, a fiber-braid, a woven fabric, a non-woven fiber mat, a fiber ply, and other 3D woven structures.
- Filaments include high aspect ratio fibers having diameters ranging in size from between about 1 micron to about 100 microns. Fiber tows are generally compactly associated bundles of filaments and are usually twisted together to give yarns.
- Yarns include closely associated bundles of twisted filaments. Each filament diameter in a yarn is relatively uniform. Yarns have varying weights described by their 'tex,' expressed as weight in grams of 1000 linear meters, or denier, expressed as weight in pounds of 10,000 yards, with a typical tex range usually being between about 200 tex to about 2000 tex.
- Tows include loosely associated bundles of untwisted filaments. As in yarns, filament diameter in a tow is generally uniform. Tows also have varying weights and the tex range is usually between 200 tex and 2000 tex. They are frequently characterized by the number of thousands of filaments in the tow, for example 12K tow, 24K tow, 48K tow, and the like.
- Tapes are materials that can be assembled as weaves or can represent non-woven flattened tows. Tapes can vary in width and are generally two-sided structures similar to ribbon. Process for formation can be compatible with CNT infusion on one or both sides of a tape. CNT-infused tapes can resemble a "carpet" or "forest” on a flat substrate surface.
- Fiber-braids represent rope-like structures of densely packed fibers. Such structures can be assembled from yarns, for example. Braided structures can include a hollow portion or a braided structure can be assembled about another core material.
- a number of primary fiber material structures can be organized into fabric or sheet-like structures. These include, for example, woven fabrics, non-woven fiber mat, and fiber ply, in addition to the tapes described above. Such higher ordered structures can be assembled from parent tows, yarns, filaments or the like, with CNTs already infused in the parent fiber. Alternatively, such structures can serve as the substrate for the CNT infusion process.
- Polyacrylonitrile (PAN) and Pitch Carbon fiber from rayon precursors, which are cellulosic materials, has relatively low carbon content at about 20% and the fibers tend to have low strength and stiffness.
- Polyacrylonitrile (PAN) precursors provide a carbon fiber with a carbon content of about 55%. Carbon fiber based on a PAN precursor generally has a higher tensile strength than carbon fiber based on other carbon fiber precursors due to a minimum of surface defects.
- Pitch precursors based on petroleum asphalt, coal tar, and polyvinyl chloride can also be used to produce carbon fiber. Although pitches are relatively low in cost and high in carbon yield, there can be issues of non-uniformity in a given batch.
- CNTs useful for infusion to fiber materials include SWNTs, DWNTs, MWNTs, and mixtures thereof.
- the exact CNTs to be used depends on the application of the CNT-infused fiber material.
- CNTs can be used for thermal and/or electrical conductivity applications, or as insulators.
- the infused CNTs are SWNTs.
- the infused CNTs are MWNTs.
- the infused CNTs are a combination of SWNTs and MWNTs.
- SWNTs can be semi-conducting or metallic, while MWNTs are metallic.
- CNTs lend their characteristic properties such as mechanical strength, low to moderate electrical resistivity, high thermal conductivity, and the like to the CNT-infused fiber material.
- the electrical resistivity of a CNT-infused fiber material is lower than the electrical resistivity of a parent fiber material.
- the extent to which the resulting CNT-infused fiber material expresses these characteristics can be a function of the extent and density of coverage of the fiber by the CNTs. Any amount of the fiber surface area, from 0-55% of the fiber can be covered assuming an 8 nm diameter, 5-walled MWNT (again, this calculation counts the space inside the CNTs as fillable). This number is lower for smaller diameter CNTs and more for greater diameter CNTs. 55% surface area coverage is equivalent to about 15,000 CNTs/ ⁇ 2 .
- Infused CNTs can vary in length ranging from between about 1 micron to about 500 microns, including 1 micron, 2 microns, 3 microns, 4 micron, 5, microns, 6, microns, 7 microns, 8 microns, 9 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, 60 microns, 70 microns, 80 microns, 90 microns, 100 microns, 150 microns, 200 microns, 250 microns, 300 microns, 350 microns, 400 microns, 450 microns, 500 microns, and all values in between.
- CNTs can also be less than about 1 micron in length, including about 0.5 microns, for example. CNTs can also be greater than 500 microns, including for example, 510 microns, 520 microns, 550 microns, 600 microns, 700 microns, and all values in between.
- Compositions of the disclosure can incorporate CNTs have a length from about 1 micron to about 10 microns. Such CNT lengths can be useful in application to increase shear strength. CNTs can also have a length from about 5 to about 70 microns. Such CNT lengths can be useful in applications for increased tensile strength if the CNTs are aligned in the fiber direction. CNTs can also have a length from about 10 microns to about 100 microns. Such CNT lengths can be useful to increase electrical/thermal properties as well as mechanical properties. CNTs can have a length from about 100 microns to about 500 microns, which can also be beneficial to increase electrical and thermal properties. Such control of CNT length is readily achieved through modulation of carbon feedstock and inert gas flow rates coupled with varying linespeeds and growth temperature.
- compositions that include spoolable lengths of CNT-infused fiber materials can have various uniform regions with different lengths of CNTs. For example, it can be desirable to have a first portion of CNT-infused fiber material with uniformly shorter CNT lengths to enhance shear strength properties, and a second portion of the same spoolable material with a uniform longer CNT length to enhance electrical or thermal properties.
- Certain processes for CNT infusion to fiber materials allow control of the CNT lengths with uniformity and in a continuous process allowing spoolable fiber materials to be functionalized with CNTs at high rates.
- linespeeds in a continuous process for a system that is 3 feet long can be in a range anywhere from about 0.5 ft/min to about 36 ft/min and greater. The speed selected depends on various parameters as explained further below.
- a material residence time of about 5 to about 30 seconds can produce CNTs having a length between about 1 micron and about 10 microns. In some embodiments, a material residence time of about 30 to about 180 seconds can produce CNTs having a length between about 10 microns to about 100 microns. In still further
- a material residence time of about 180 to about 300 seconds can produce CNTs having a length between about 100 microns to about 500 microns.
- CNT length can also be modulated by reaction temperatures, and carrier and carbon feedstock concentrations and flow rates.
- CNT-infused fiber materials of the disclosure include a barrier coating.
- Barrier coatings can include for example an alkoxysilane, methylsiloxane, an alumoxane, alumina nanoparticles, spin on glass and glass nanoparticles.
- the CNT-forming catalyst can be added to the uncured barrier coating material and then applied to the fiber material together.
- the barrier coating material can be added to the fiber material prior to deposition of the CNT-forming catalyst.
- the barrier coating material can be of a thickness sufficiently thin to allow exposure of the CNT-forming catalyst to the carbon feedstock for subsequent CVD growth. In some embodiments, the thickness is less than or about equal to the effective diameter of the CNT-forming catalyst.
- the thickness of the barrier coating is in a range from between about 10 nm to about 100 nm.
- the barrier coating can also be less than 10 nm, including lnm, 2 nm, 3nm, 4 nm, 5 nm, 6 nm, 7nm, 8nm, 9 nm, 10 nm, and any value in between.
- the barrier coating can serve as an intermediate layer between the fiber material and the CNTs and serves to mechanically infuse the CNTs to the fiber material.
- Such mechanical infusion still provides a robust system in which the fiber material serves as a platform for organizing the CNTs while still imparting properties of the CNTs to the fiber material.
- the benefit of including a barrier coating is the immediate protection it provides the fiber material from chemical damage due to exposure to moisture and/or any thermal damage due to heating of the fiber material at the temperatures used to promote CNT growth.
- the infused CNTs disclosed herein can effectively function as a replacement for conventional fiber "sizing.”
- the infused CNTs are more robust than conventional sizing materials and can improve the fiber-to-matrix interface in composite materials and, more generally, improve fiber-to-fiber interfaces.
- the CNT-infused fiber materials disclosed herein are themselves composite materials in the sense the CNT-infused fiber material properties will be a combination of those of the fiber material as well as those of the infused CNTs. Consequently, embodiments of the present disclosure provide a means to impart desired properties to a fiber material that otherwise lack such properties or possesses them in insufficient measure.
- Fiber materials can be tailored or engineered to meet the requirements of specific applications.
- the CNTs acting as sizing can protect fiber materials from absorbing moisture due to the hydrophobic CNT structure.
- hydrophobic matrix materials as further exemplified below, interact well with hydrophobic CNTs to provide improved fiber to matrix interactions.
- compositions of the present disclosure can include further conventional sizing agents.
- sizing agents vary widely in type and function and include, for example, surfactants, anti-static agents, lubricants, siloxanes, alkoxysilanes, aminosilanes, silanes, silanols, polyvinyl alcohol, starch, and mixtures thereof.
- secondary sizing agents can be used to protect the CNTs themselves or provide further properties to the fiber not imparted by the presence of the infused CNTs.
- Compositions of the present disclosure can further include a matrix material to form a composite with the CNT-infused fiber material.
- matrix materials can include, for example, an epoxy, a polyester, a vinylester, a polyetherimide, a polyetherketoneketone, a polyphthalamide, a polyetherketone, a polytheretherketone, a polyimide, a phenol- formaldehyde, and a bismaleimide.
- Matrix materials useful in the present disclosure can include any of the known matrix materials (see Mel M. Schwartz, Composite Materials Handbook (2d ed. 1992)). Matrix materials more generally can include resins (polymers), both thermosetting and thermoplastic, metals, ceramics, and cements.
- Thermosetting resins useful as matrix materials include phthalic/maelic type polyesters, vinyl esters, epoxies, phenolics, cyanates, bismaleimides, and nadic end-capped polyimides (e.g., PMR-15).
- Thermoplastic resins include polysulfones, polyamides, polycarbonates, polyphenylene oxides, polysulfides, polyether ether ketones, polyether sulfones, polyamide-imides, polyetherimides, polyimides, polyarylates, and liquid crystalline polyester.
- Metals useful as matrix materials include alloys of aluminum such as aluminum 6061, 2024, and 713 aluminum braze. Ceramics useful as matrix materials include carbon ceramics, such as lithium aluminosilicate, oxides such as alumina and mullite, nitrides such as silicon nitride, and carbides such as silicon carbide. Cements useful as matrix materials include carbide-base cermets (tungsten carbide, chromium carbide, and titanium carbide), refractory cements (tungsten-thoria and barium-carbonate-nickel), chromium-alumina, and nickel-magnesia iron-zirconium carbide. Any of the above-described matrix materials can be used alone or in combination.
Abstract
Description
Claims
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AU2010321536A AU2010321536A1 (en) | 2009-11-23 | 2010-11-23 | CNT-tailored composite space-based structures |
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CA2777001A CA2777001A1 (en) | 2009-11-23 | 2010-11-23 | Cnt-tailored composite space-based structures |
ZA2012/02438A ZA201202438B (en) | 2009-11-23 | 2012-04-03 | Cnt-tailored composite space-based structures |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018115645A1 (en) * | 2016-12-22 | 2018-06-28 | Nexans | Composite material containing aluminium or copper - carbon nanotubes, and production method thereof |
US10763003B2 (en) | 2013-11-21 | 2020-09-01 | Airbus Ds Gmbh | Method for manufacturing a charge dissipative surface layer |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8951632B2 (en) | 2007-01-03 | 2015-02-10 | Applied Nanostructured Solutions, Llc | CNT-infused carbon fiber materials and process therefor |
US8951631B2 (en) * | 2007-01-03 | 2015-02-10 | Applied Nanostructured Solutions, Llc | CNT-infused metal fiber materials and process therefor |
US9005755B2 (en) | 2007-01-03 | 2015-04-14 | Applied Nanostructured Solutions, Llc | CNS-infused carbon nanomaterials and process therefor |
CN101466252B (en) * | 2007-12-21 | 2011-11-30 | 清华大学 | Electromagnetic shielding layer and preparation method thereof |
DE102008016104A1 (en) * | 2008-03-28 | 2009-10-08 | Airbus Deutschland Gmbh | Breathable aircraft fuselage |
US20100224129A1 (en) | 2009-03-03 | 2010-09-09 | Lockheed Martin Corporation | System and method for surface treatment and barrier coating of fibers for in situ cnt growth |
US20100260998A1 (en) * | 2009-04-10 | 2010-10-14 | Lockheed Martin Corporation | Fiber sizing comprising nanoparticles |
US8969225B2 (en) | 2009-08-03 | 2015-03-03 | Applied Nano Structured Soultions, LLC | Incorporation of nanoparticles in composite fibers |
EP2523856A4 (en) * | 2010-01-14 | 2015-01-28 | Saab Ab | Multifunctional de-icing/anti-icing system of a wind turbine |
DE102010042970A1 (en) * | 2010-05-12 | 2011-11-17 | Airbus Operations Gmbh | Structural component with improved conductivity and mechanical strength and method for its production |
EP2616189B1 (en) | 2010-09-14 | 2020-04-01 | Applied NanoStructured Solutions, LLC | Glass substrates having carbon nanotubes grown thereon and methods for production thereof |
US8479880B2 (en) * | 2010-09-15 | 2013-07-09 | The Boeing Company | Multifunctional nano-skin articles and methods |
EP2619260A1 (en) * | 2010-09-20 | 2013-07-31 | BAE Systems Plc. | Structural health monitoring using sprayable paint formulations |
KR101877475B1 (en) | 2010-09-22 | 2018-07-11 | 어플라이드 나노스트럭처드 솔루션스, 엘엘씨. | Carbon fiber substrates having carbon nanotubes grown thereon and processes for production thereof |
WO2013052176A2 (en) | 2011-07-27 | 2013-04-11 | California Institute Of Technology | Carbon nanotube foams with controllable mechanical properties |
US9505615B2 (en) | 2011-07-27 | 2016-11-29 | California Institute Of Technology | Method for controlling microstructural arrangement of nominally-aligned arrays of carbon nanotubes |
JP5832019B2 (en) * | 2011-10-30 | 2015-12-16 | 株式会社日本エコカーボン | Method for producing radiation shielding mortar and method for producing radiation shielding container |
ES2426111B1 (en) * | 2012-04-17 | 2015-03-24 | Airbus Operations S.L. | AIRCRAFT SUBSTITUTE SURFACE INTERFACE |
US9616635B2 (en) | 2012-04-20 | 2017-04-11 | California Institute Of Technology | Multilayer foam structures of nominally-aligned carbon nanotubes (CNTS) |
US9327848B2 (en) * | 2012-06-11 | 2016-05-03 | Bigelow Aerospace | Method of deploying a spacecraft shield in space |
US8939406B2 (en) * | 2012-07-02 | 2015-01-27 | The Boeing Company | Joining composite fuselage sections along window belts |
US20140009599A1 (en) * | 2012-07-03 | 2014-01-09 | Applied Nanostructure Solutions, Llc. | Methods and systems for monitoring the growth of carbon nanostructures on a substrate |
US9539789B2 (en) * | 2012-08-21 | 2017-01-10 | Kabushiki Kaisha Toyota Jidoshokki | Three-dimensional fiber-reinforced composite and method for producing three-dimensional fiber-reinforced composite |
US9506194B2 (en) | 2012-09-04 | 2016-11-29 | Ocv Intellectual Capital, Llc | Dispersion of carbon enhanced reinforcement fibers in aqueous or non-aqueous media |
US9048548B2 (en) * | 2013-10-14 | 2015-06-02 | The Boeing Company | Aircraft missile launcher cover |
US9896183B2 (en) | 2014-08-25 | 2018-02-20 | Sikorsky Aircraft Corporation | Airframe component with electrically bonded connections |
US20160285171A1 (en) * | 2015-03-27 | 2016-09-29 | John Bernard Moylan | Flexible Asymmetric Radio Frequency Data Shield |
US9994324B2 (en) | 2015-05-26 | 2018-06-12 | Goodrich Corporation | Deicer boots having different elastomer fibers |
US9994326B2 (en) | 2015-05-26 | 2018-06-12 | Goodrich Corporation | Deicer boots having elastomer fibers with aligned carbon allotrope materials |
US9994325B2 (en) | 2015-05-26 | 2018-06-12 | Goodrich Corporation | Polyether urethane deicer boots |
BR112017025470A2 (en) * | 2015-05-28 | 2018-08-07 | Lm Wp Patent Holding As | Wind turbine blade with a trailing edge space section |
CN104985719B (en) * | 2015-06-08 | 2017-10-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | The preparation method of Nano Materials Modified Polymers base fibrous composite |
US9987659B2 (en) * | 2015-10-19 | 2018-06-05 | United Technologies Corporation | Nanotube enhancement of interlaminar performance for a composite component |
CA3018102C (en) | 2016-03-31 | 2020-08-25 | Vestas Wind Systems A/S | Condition monitoring and controlling of heating elements in wind turbines |
US10626845B2 (en) | 2016-08-30 | 2020-04-21 | King Abdulaziz University | Wind turbines with reduced electromagnetic scattering |
US10660160B2 (en) | 2016-09-20 | 2020-05-19 | Goodrich Corporation | Nano alumina fabric protection ply for de-icers |
CN106671525B (en) * | 2016-12-27 | 2019-02-01 | 中国航空工业集团公司北京航空材料研究院 | The highly conductive and high Reinforced structure composite material and preparation method of hybrid modification |
US10828843B2 (en) | 2017-03-16 | 2020-11-10 | General Electric Company | Shear webs for wind turbine rotor blades and methods for manufacturing same |
DE102017108818A1 (en) * | 2017-04-25 | 2018-10-25 | Wobben Properties Gmbh | Wind turbine rotor blade and method of manufacturing a wind turbine rotor blade |
CN110650838A (en) * | 2017-05-15 | 2020-01-03 | 加拿大国家研究理事会 | Stretchable nanocomposite skin materials and related structures |
US10480916B1 (en) | 2017-09-07 | 2019-11-19 | Gregory Saltz | Low-observable projectile |
JP2019085104A (en) * | 2017-11-06 | 2019-06-06 | 株式会社エアロネクスト | Flight unit and control method of flight unit |
DE102017127635A1 (en) * | 2017-11-22 | 2019-05-23 | Wobben Properties Gmbh | Component for a wind energy plant and method for producing and method for testing the component |
US11097348B2 (en) * | 2017-12-08 | 2021-08-24 | General Electric Company | Structures and components having composite unit cell matrix construction |
KR20210019059A (en) * | 2018-06-11 | 2021-02-19 | 니타 가부시키가이샤 | Composite material, prepreg, carbon fiber reinforced molded body and method of manufacturing composite material |
US20220009198A1 (en) * | 2018-11-19 | 2022-01-13 | Bright Lite Structures Llc | High-strength low-heat release components including a resin layer having sp2 carbon-containing material therein |
JP7185069B2 (en) * | 2019-11-12 | 2022-12-06 | 株式会社Subaru | Propulsion device, anti-icing method for rotor and aircraft |
US11725632B2 (en) | 2020-10-08 | 2023-08-15 | Arctura, Inc. | Surface coating for enhanced lightning protection of wind turbine blades and other composite structures |
US11162475B1 (en) * | 2020-10-08 | 2021-11-02 | Ardura, Inc. | Surface coating for enhanced lightning protection of wind turbine blades and other composite structures |
CN114622405A (en) * | 2020-12-14 | 2022-06-14 | 清华大学 | Infrared stealth fabric and infrared stealth garment |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050230560A1 (en) * | 2001-09-18 | 2005-10-20 | Glatkowski Paul J | ESD coatings for use with spacecraft |
US20080075954A1 (en) * | 2006-05-19 | 2008-03-27 | Massachusetts Institute Of Technology | Nanostructure-reinforced composite articles and methods |
US20080170982A1 (en) * | 2004-11-09 | 2008-07-17 | Board Of Regents, The University Of Texas System | Fabrication and Application of Nanofiber Ribbons and Sheets and Twisted and Non-Twisted Nanofiber Yarns |
US20080237922A1 (en) * | 2001-11-09 | 2008-10-02 | Advanced Ceramics Research, Inc. | Composite components with integral protective casings |
US20090117363A1 (en) * | 2005-03-25 | 2009-05-07 | Brian Lee Wardle | Nano-engineered material architectures: ultra-tough hybrid nanocomposite system |
US20090121727A1 (en) * | 2007-09-14 | 2009-05-14 | The Regents Of The University Of Michigan | Electrical impedance tomography of nanoengineered thin films |
Family Cites Families (328)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2412707A (en) | 1943-06-07 | 1946-12-17 | Harold M Barnett | Process for carotene extraction |
US3304855A (en) * | 1963-05-15 | 1967-02-21 | H G Molenaar & Company Proprie | Extractor means for extracting liquid from a liquids containing mass |
US3584758A (en) | 1968-10-01 | 1971-06-15 | Robert D Moore | Battery tray |
JPS52129295A (en) | 1976-04-23 | 1977-10-29 | Agency Of Ind Science & Technol | Solar battery device and its production |
US4530750A (en) | 1981-03-20 | 1985-07-23 | A. S. Laboratories, Inc. | Apparatus for coating optical fibers |
JPS5845923A (en) * | 1981-09-14 | 1983-03-17 | Mitsubishi Electric Corp | Building method of space structure |
US4566969A (en) * | 1981-09-29 | 1986-01-28 | Crane & Co., Inc. | Rolling filter apparatus |
US4515107A (en) * | 1982-11-12 | 1985-05-07 | Sovonics Solar Systems | Apparatus for the manufacture of photovoltaic devices |
US5238808A (en) | 1984-10-31 | 1993-08-24 | Igen, Inc. | Luminescent metal chelate labels and means for detection |
US5310687A (en) | 1984-10-31 | 1994-05-10 | Igen, Inc. | Luminescent metal chelate labels and means for detection |
US5221605A (en) | 1984-10-31 | 1993-06-22 | Igen, Inc. | Luminescent metal chelate labels and means for detection |
DE3507419A1 (en) * | 1985-03-02 | 1986-09-04 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING COMPOSITES FROM METALS AND ELECTRICALLY CONDUCTIVE POLYMERS |
US4707349A (en) | 1986-02-28 | 1987-11-17 | Hjersted Norman B | Process of preparing a preferred ferric sulfate solution, and product |
FR2611198B1 (en) | 1987-02-25 | 1991-12-06 | Aerospatiale | COMPOSITE MATERIAL WITH MATRIX AND CARBON REINFORCING FIBERS AND METHOD FOR MANUFACTURING THE SAME |
US4920917A (en) * | 1987-03-18 | 1990-05-01 | Teijin Limited | Reactor for depositing a layer on a moving substrate |
US4837073A (en) | 1987-03-30 | 1989-06-06 | Allied-Signal Inc. | Barrier coating and penetrant providing oxidation protection for carbon-carbon materials |
US5130194A (en) | 1988-02-22 | 1992-07-14 | The Boeing Company | Coated ceramic fiber |
US4894293A (en) * | 1988-03-10 | 1990-01-16 | Texas Instruments Incorporated | Circuit system, a composite metal material for use therein, and a method for making the material |
GB8821396D0 (en) * | 1988-09-13 | 1989-03-30 | Royal Ordnance Plc | Thermal insulators for rocket motors |
US5227238A (en) | 1988-11-10 | 1993-07-13 | Toho Rayon Co., Ltd. | Carbon fiber chopped strands and method of production thereof |
CA2004076A1 (en) * | 1988-11-29 | 1990-05-29 | Makoto Miyazaki | Sulfone compounds, process for surface-treating reinforcing fibers using same and surface-treated reinforcing fibers obtained thereby |
WO1991014294A1 (en) | 1990-03-16 | 1991-09-19 | Ricoh Co., Ltd. | Solid electrolyte, electrochemical element comprising the same, and process for forming said electrolyte |
US5242720A (en) * | 1990-04-11 | 1993-09-07 | Wasatch Fiber Group, Inc. | Cohesive finishes for composite materials |
US5156225A (en) | 1990-07-30 | 1992-10-20 | Murrin Craig M | Electric battery as structural component of vehicle |
JP2824808B2 (en) | 1990-11-16 | 1998-11-18 | キヤノン株式会社 | Apparatus for continuously forming large-area functional deposited films by microwave plasma CVD |
US5173367A (en) | 1991-01-15 | 1992-12-22 | Ethyl Corporation | Ceramic composites |
US5246794A (en) | 1991-03-19 | 1993-09-21 | Eveready Battery Company, Inc. | Cathode collector made from carbon fibrils |
US5370921A (en) * | 1991-07-11 | 1994-12-06 | The Dexter Corporation | Lightning strike composite and process |
US5225265A (en) | 1991-12-06 | 1993-07-06 | Basf Aktiengesellschaft | Environmentally durable lightning strike protection materials for composite structures |
US20020085974A1 (en) | 1992-01-15 | 2002-07-04 | Hyperion Catalysis International, Inc. | Surface treatment of carbon microfibers |
JP2894068B2 (en) * | 1992-01-30 | 1999-05-24 | 日本電気株式会社 | Semiconductor integrated circuit |
US5946587A (en) | 1992-08-06 | 1999-08-31 | Canon Kabushiki Kaisha | Continuous forming method for functional deposited films |
US5354603A (en) * | 1993-01-15 | 1994-10-11 | Minnesota Mining And Manufacturing Company | Antifouling/anticorrosive composite marine structure |
US5547525A (en) | 1993-09-29 | 1996-08-20 | Thiokol Corporation | Electrostatic discharge reduction in energetic compositions |
US5470408A (en) | 1993-10-22 | 1995-11-28 | Thiokol Corporation | Use of carbon fibrils to enhance burn rate of pyrotechnics and gas generants |
JP3571785B2 (en) | 1993-12-28 | 2004-09-29 | キヤノン株式会社 | Method and apparatus for forming deposited film |
GB2294666B (en) * | 1994-11-01 | 1998-01-07 | Mission Yachts Plc | Sail boats |
WO1996029564A2 (en) | 1995-03-14 | 1996-09-26 | Thiokol Corporation | Infrared tracer compositions |
US5744075A (en) * | 1995-05-19 | 1998-04-28 | Martin Marietta Energy Systems, Inc. | Method for rapid fabrication of fiber preforms and structural composite materials |
JP3119172B2 (en) | 1995-09-13 | 2000-12-18 | 日新電機株式会社 | Plasma CVD method and apparatus |
JPH09111135A (en) * | 1995-10-23 | 1997-04-28 | Mitsubishi Materials Corp | Conductive polymer composition |
JPH09115334A (en) | 1995-10-23 | 1997-05-02 | Mitsubishi Materiais Corp | Transparent conductive film and composition for film formation |
US20080063585A1 (en) * | 1997-03-07 | 2008-03-13 | William Marsh Rice University, A Texas University | Fullerene nanotube compositions |
US6683783B1 (en) | 1997-03-07 | 2004-01-27 | William Marsh Rice University | Carbon fibers formed from single-wall carbon nanotubes |
US5997832A (en) | 1997-03-07 | 1999-12-07 | President And Fellows Of Harvard College | Preparation of carbide nanorods |
DE19721348A1 (en) | 1997-05-22 | 1998-11-26 | Varta Batterie | Multicellular accumulator |
SE512870C2 (en) * | 1997-05-30 | 2000-05-29 | Kockums Ab | Screened boat or ship hull of reinforced plastic with electrically sealed hatches, etc. d |
JP4392863B2 (en) * | 1997-06-04 | 2010-01-06 | アライアント・テクシステムズ・インコーポレーテッド | Low density composite article and method for producing the same |
US6205016B1 (en) | 1997-06-04 | 2001-03-20 | Hyperion Catalysis International, Inc. | Fibril composite electrode for electrochemical capacitors |
US6479030B1 (en) | 1997-09-16 | 2002-11-12 | Inorganic Specialists, Inc. | Carbon electrode material |
JP3740295B2 (en) | 1997-10-30 | 2006-02-01 | キヤノン株式会社 | Carbon nanotube device, manufacturing method thereof, and electron-emitting device |
DE69908990T2 (en) | 1998-01-29 | 2004-05-19 | Coi Ceramics, Inc., San Diego | Process for the production of sized coated ceramic fibers |
KR20010074667A (en) * | 1998-06-19 | 2001-08-08 | 추후보정 | Free-standing and aligned carbon nanotubes and synthesis thereof |
US6455021B1 (en) | 1998-07-21 | 2002-09-24 | Showa Denko K.K. | Method for producing carbon nanotubes |
US6346189B1 (en) * | 1998-08-14 | 2002-02-12 | The Board Of Trustees Of The Leland Stanford Junior University | Carbon nanotube structures made using catalyst islands |
US6692717B1 (en) * | 1999-09-17 | 2004-02-17 | William Marsh Rice University | Catalytic growth of single-wall carbon nanotubes from metal particles |
US7125534B1 (en) | 1998-09-18 | 2006-10-24 | William Marsh Rice University | Catalytic growth of single- and double-wall carbon nanotubes from metal particles |
US6641793B2 (en) * | 1998-10-02 | 2003-11-04 | University Of Kentucky Research Foundation | Method of solubilizing single-walled carbon nanotubes in organic solutions |
US6232706B1 (en) | 1998-11-12 | 2001-05-15 | The Board Of Trustees Of The Leland Stanford Junior University | Self-oriented bundles of carbon nanotubes and method of making same |
JP2002532869A (en) * | 1998-12-05 | 2002-10-02 | エナジィ・ストーリッジ・システムズ・プロプライエタリー・リミテッド | Charge storage device |
US6265466B1 (en) * | 1999-02-12 | 2001-07-24 | Eikos, Inc. | Electromagnetic shielding composite comprising nanotubes |
US6221154B1 (en) * | 1999-02-18 | 2001-04-24 | City University Of Hong Kong | Method for growing beta-silicon carbide nanorods, and preparation of patterned field-emitters by chemical vapor depositon (CVD) |
CN1174916C (en) | 1999-04-21 | 2004-11-10 | 张震 | Forming method for carbon nano-tube |
US20030091496A1 (en) * | 2001-07-23 | 2003-05-15 | Resasco Daniel E. | Method and catalyst for producing single walled carbon nanotubes |
US7816709B2 (en) | 1999-06-02 | 2010-10-19 | The Board Of Regents Of The University Of Oklahoma | Single-walled carbon nanotube-ceramic composites and methods of use |
US6333016B1 (en) * | 1999-06-02 | 2001-12-25 | The Board Of Regents Of The University Of Oklahoma | Method of producing carbon nanotubes |
US6913075B1 (en) | 1999-06-14 | 2005-07-05 | Energy Science Laboratories, Inc. | Dendritic fiber material |
US7132161B2 (en) * | 1999-06-14 | 2006-11-07 | Energy Science Laboratories, Inc. | Fiber adhesive material |
US6361861B2 (en) * | 1999-06-14 | 2002-03-26 | Battelle Memorial Institute | Carbon nanotubes on a substrate |
US20050181209A1 (en) | 1999-08-20 | 2005-08-18 | Karandikar Prashant G. | Nanotube-containing composite bodies, and methods for making same |
CA2368043A1 (en) | 1999-10-27 | 2001-05-03 | William Marsh Rice University | Macroscopic ordered assembly of carbon nanotubes |
DE19958473A1 (en) | 1999-12-04 | 2001-06-07 | Bosch Gmbh Robert | Process for the production of composite layers with a plasma beam source |
CN1433443B (en) * | 1999-12-07 | 2010-05-12 | 威廉马歇莱思大学 | Oriented nanofibers embedded in polymer matrix |
FR2805179B1 (en) | 2000-02-23 | 2002-09-27 | Centre Nat Rech Scient | PROCESS FOR OBTAINING MACROSCOPIC FIBERS AND TAPES FROM COLLOIDAL PARTICLES, IN PARTICULAR CARBON NANOTUBES |
AU2001255169A1 (en) | 2000-03-07 | 2001-09-17 | Robert P. H. Chang | Carbon nanostructures and methods of preparation |
DE60107057T2 (en) | 2000-03-07 | 2005-11-10 | Dsm Ip Assets B.V. | HEAT-RESISTANT RESIN COMPOSITION OF A RADICALLY HARDENABLE RESIN MIXTURE AND CARBON FIBERS |
KR100360470B1 (en) * | 2000-03-15 | 2002-11-09 | 삼성에스디아이 주식회사 | Method for depositing a vertically aligned carbon nanotubes using thermal chemical vapor deposition |
US6479028B1 (en) | 2000-04-03 | 2002-11-12 | The Regents Of The University Of California | Rapid synthesis of carbon nanotubes and carbon encapsulated metal nanoparticles by a displacement reaction |
JP4757369B2 (en) * | 2000-05-08 | 2011-08-24 | パナソニック株式会社 | Rectangular alkaline storage battery, unit battery and assembled battery using the same |
US6653005B1 (en) * | 2000-05-10 | 2003-11-25 | University Of Central Florida | Portable hydrogen generator-fuel cell apparatus |
NO321272B1 (en) * | 2000-05-31 | 2006-04-10 | Aker Kvaerner Subsea As | The tension member |
US6413487B1 (en) | 2000-06-02 | 2002-07-02 | The Board Of Regents Of The University Of Oklahoma | Method and apparatus for producing carbon nanotubes |
US6908572B1 (en) | 2000-07-17 | 2005-06-21 | University Of Kentucky Research Foundation | Mixing and dispersion of nanotubes by gas or vapor expansion |
EP1182272A1 (en) * | 2000-08-23 | 2002-02-27 | Cold Plasma Applications C.P.A. | Process and apparatus for continuous cold plasma deposition of metallic layers |
US6420293B1 (en) | 2000-08-25 | 2002-07-16 | Rensselaer Polytechnic Institute | Ceramic matrix nanocomposites containing carbon nanotubes for enhanced mechanical behavior |
US6653619B2 (en) | 2000-09-15 | 2003-11-25 | Agilent Technologies, Inc. | Optical motion encoder with a reflective member allowing the light source and sensor to be on the same side |
US6495258B1 (en) | 2000-09-20 | 2002-12-17 | Auburn University | Structures with high number density of carbon nanotubes and 3-dimensional distribution |
JP3912583B2 (en) | 2001-03-14 | 2007-05-09 | 三菱瓦斯化学株式会社 | Method for producing oriented carbon nanotube film |
JP3981566B2 (en) * | 2001-03-21 | 2007-09-26 | 守信 遠藤 | Method for producing expanded carbon fiber body |
US7265174B2 (en) | 2001-03-22 | 2007-09-04 | Clemson University | Halogen containing-polymer nanocomposite compositions, methods, and products employing such compositions |
CA2442273A1 (en) * | 2001-03-26 | 2002-10-03 | Eikos, Inc. | Carbon nanotubes in structures and repair compositions |
EP1392500A1 (en) | 2001-03-26 | 2004-03-03 | Eikos, Inc. | Coatings containing carbon nanotubes |
RU2184086C1 (en) * | 2001-04-02 | 2002-06-27 | Петрик Виктор Иванович | Method of removing crude oil, petroleum products and/or chemical pollutant from liquid and/or gas, and/or from surface |
AUPR421701A0 (en) * | 2001-04-04 | 2001-05-17 | Commonwealth Scientific And Industrial Research Organisation | Process and apparatus for the production of carbon nanotubes |
US6699525B2 (en) * | 2001-04-16 | 2004-03-02 | The Board Of Trustees Of Western Michigan University | Method of forming carbon nanotubes and apparatus therefor |
US6382120B1 (en) | 2001-05-02 | 2002-05-07 | Fred Aivars Keire | Seamed sail and method of manufacture |
US7160531B1 (en) * | 2001-05-08 | 2007-01-09 | University Of Kentucky Research Foundation | Process for the continuous production of aligned carbon nanotubes |
US7033485B2 (en) * | 2001-05-11 | 2006-04-25 | Koppers Industries Of Delaware, Inc. | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process |
US7157068B2 (en) * | 2001-05-21 | 2007-01-02 | The Trustees Of Boston College | Varied morphology carbon nanotubes and method for their manufacture |
JP4207398B2 (en) * | 2001-05-21 | 2009-01-14 | 富士ゼロックス株式会社 | Method for manufacturing wiring of carbon nanotube structure, wiring of carbon nanotube structure, and carbon nanotube device using the same |
EP1401943A1 (en) * | 2001-06-01 | 2004-03-31 | The Lubrizol Corporation | Substrates with modified carbon surfaces in composites |
WO2002100931A1 (en) | 2001-06-08 | 2002-12-19 | Eikos, Inc. | Nanocomposite dielectrics |
US7341498B2 (en) * | 2001-06-14 | 2008-03-11 | Hyperion Catalysis International, Inc. | Method of irradiating field emission cathode having nanotubes |
JP2002370695A (en) * | 2001-06-14 | 2002-12-24 | Toray Ind Inc | Member for aircraft and space satellite |
US7125502B2 (en) | 2001-07-06 | 2006-10-24 | William Marsh Rice University | Fibers of aligned single-wall carbon nanotubes and process for making the same |
US6783702B2 (en) | 2001-07-11 | 2004-08-31 | Hyperion Catalysis International, Inc. | Polyvinylidene fluoride composites and methods for preparing same |
AU2002332422C1 (en) | 2001-07-27 | 2008-03-13 | Eikos, Inc. | Conformal coatings comprising carbon nanotubes |
CN1325372C (en) | 2001-07-27 | 2007-07-11 | 萨里大学 | Production of carbon nanotubes |
EP1414894B1 (en) * | 2001-08-06 | 2012-06-13 | Showa Denko K.K. | Conductive curable resin composition and separator for fuel cell |
US20030044678A1 (en) * | 2001-08-25 | 2003-03-06 | Esq. Tyson Winarski | Polymer battery that also serves as a durable housing for portable electronic devices and microchips |
ATE414675T1 (en) | 2001-08-29 | 2008-12-15 | Georgia Tech Res Inst | COMPOSITIONS COMPRISING ROD-SHAPED POLYMERS AND NANOTUBE-SHAPED STRUCTURES AND METHODS FOR PRODUCING THE SAME |
US6656339B2 (en) * | 2001-08-29 | 2003-12-02 | Motorola, Inc. | Method of forming a nano-supported catalyst on a substrate for nanotube growth |
US7070472B2 (en) * | 2001-08-29 | 2006-07-04 | Motorola, Inc. | Field emission display and methods of forming a field emission display |
US6837928B1 (en) * | 2001-08-30 | 2005-01-04 | The Board Of Trustees Of The Leland Stanford Junior University | Electric field orientation of carbon nanotubes |
US6528572B1 (en) * | 2001-09-14 | 2003-03-04 | General Electric Company | Conductive polymer compositions and methods of manufacture thereof |
TW561102B (en) | 2001-10-22 | 2003-11-11 | Hrl Lab Llc | Preparing composites by using resins |
US7022776B2 (en) * | 2001-11-07 | 2006-04-04 | General Electric | Conductive polyphenylene ether-polyamide composition, method of manufacture thereof, and article derived therefrom |
US20060065546A1 (en) * | 2001-11-19 | 2006-03-30 | Alain Curodeau | Electric discharge machining electrode and method |
WO2003049219A1 (en) | 2001-11-30 | 2003-06-12 | The Trustees Of Boston College | Coated carbon nanotube array electrodes |
US6921462B2 (en) | 2001-12-17 | 2005-07-26 | Intel Corporation | Method and apparatus for producing aligned carbon nanotube thermal interface structure |
EP1465836A2 (en) * | 2001-12-21 | 2004-10-13 | Battelle Memorial Institute | Structures containing carbon nanotubes and a porous support, methods of making the same, and related uses |
US6823918B2 (en) * | 2001-12-28 | 2004-11-30 | Lockheed Martin Corporation | Integrally reinforced composite sandwich joint and process for making the same |
JP4404961B2 (en) * | 2002-01-08 | 2010-01-27 | 双葉電子工業株式会社 | A method for producing carbon nanofibers. |
TWI236505B (en) | 2002-01-14 | 2005-07-21 | Nat Science Council | Thermal cracking chemical vapor deposition process for nanocarbonaceous material |
JP4168676B2 (en) | 2002-02-15 | 2008-10-22 | コニカミノルタホールディングス株式会社 | Film forming method |
JP3922039B2 (en) | 2002-02-15 | 2007-05-30 | 株式会社日立製作所 | Electromagnetic wave absorbing material and various products using the same |
FR2836119B1 (en) | 2002-02-20 | 2004-05-28 | Jean Marie Finot | IMPROVEMENTS TO CARBON MATS |
EP1478692A2 (en) * | 2002-02-20 | 2004-11-24 | Electrovac Fabrikation Elektrotechnischer Spezialartikel GmbH | Flame retardant polymer composites and method of fabrication |
CN1176014C (en) | 2002-02-22 | 2004-11-17 | 清华大学 | Process for directly synthesizing ultra-long single-wall continuous nano carbon tube |
US6934600B2 (en) | 2002-03-14 | 2005-08-23 | Auburn University | Nanotube fiber reinforced composite materials and method of producing fiber reinforced composites |
EP1370489B1 (en) | 2002-03-14 | 2014-03-12 | Samsung Electronics Co., Ltd. | Composite materials comprising polycarbonate and single-wall carbon nanotubes |
DK175275B1 (en) * | 2002-03-19 | 2004-08-02 | Lm Glasfiber As | Transition area in wind turbine blade |
US7405854B2 (en) * | 2002-03-21 | 2008-07-29 | Cornell Research Foundation, Inc. | Fibrous micro-composite material |
US7378075B2 (en) * | 2002-03-25 | 2008-05-27 | Mitsubishi Gas Chemical Company, Inc. | Aligned carbon nanotube films and a process for producing them |
US20030213939A1 (en) | 2002-04-01 | 2003-11-20 | Sujatha Narayan | Electrically conductive polymeric foams and elastomers and methods of manufacture thereof |
US6887451B2 (en) | 2002-04-30 | 2005-05-03 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government | Process for preparing carbon nanotubes |
US20040034177A1 (en) | 2002-05-02 | 2004-02-19 | Jian Chen | Polymer and method for using the polymer for solubilizing nanotubes |
US6905667B1 (en) * | 2002-05-02 | 2005-06-14 | Zyvex Corporation | Polymer and method for using the polymer for noncovalently functionalizing nanotubes |
US7445817B2 (en) | 2002-05-08 | 2008-11-04 | Btu International Inc. | Plasma-assisted formation of carbon structures |
CN1304103C (en) | 2002-05-08 | 2007-03-14 | 达纳公司 | Plasma-assisted carbon structure forming |
FR2841233B1 (en) | 2002-06-24 | 2004-07-30 | Commissariat Energie Atomique | METHOD AND DEVICE FOR PYROLYSIS DEPOSITION OF CARBON NANOTUBES |
US6852410B2 (en) * | 2002-07-01 | 2005-02-08 | Georgia Tech Research Corporation | Macroscopic fiber comprising single-wall carbon nanotubes and acrylonitrile-based polymer and process for making the same |
US6979947B2 (en) * | 2002-07-09 | 2005-12-27 | Si Diamond Technology, Inc. | Nanotriode utilizing carbon nanotubes and fibers |
US20060099135A1 (en) | 2002-09-10 | 2006-05-11 | Yodh Arjun G | Carbon nanotubes: high solids dispersions and nematic gels thereof |
FR2844510B1 (en) | 2002-09-12 | 2006-06-16 | Snecma Propulsion Solide | THREE-DIMENSIONAL FIBROUS STRUCTURE OF REFRACTORY FIBERS, PROCESS FOR THE PRODUCTION THEREOF AND APPLICATION TO THERMOSTRUCTURAL COMPOSITE MATERIALS |
US7153452B2 (en) | 2002-09-12 | 2006-12-26 | Clemson University | Mesophase pitch-based carbon fibers with carbon nanotube reinforcements |
CN100411979C (en) | 2002-09-16 | 2008-08-20 | 清华大学 | Carbon nano pipe rpoe and preparation method thereof |
US7448441B2 (en) | 2002-09-17 | 2008-11-11 | Alliance For Sustainable Energy, Llc | Carbon nanotube heat-exchange systems |
JP3735651B2 (en) | 2002-10-08 | 2006-01-18 | 独立行政法人 宇宙航空研究開発機構 | Carbon nanofiber dispersed resin fiber reinforced composite material |
US7431965B2 (en) | 2002-11-01 | 2008-10-07 | Honda Motor Co., Ltd. | Continuous growth of single-wall carbon nanotubes using chemical vapor deposition |
WO2004039893A1 (en) * | 2002-11-01 | 2004-05-13 | Mitsubishi Rayon Co., Ltd. | Composition containing carbon nanotubes, composite having coating thereof and process for producing them |
JP3969650B2 (en) | 2002-11-19 | 2007-09-05 | 日精樹脂工業株式会社 | Method for controlling skin layer thickness in composite resin molded products |
DE60334843D1 (en) | 2002-11-27 | 2010-12-16 | Univ Rice William M | COMPOSITE MATERIALS FROM FUNCTIONALIZED NANOROES AND POLYMER AND INTERACTIONS WITH RADIATION |
CN1290763C (en) | 2002-11-29 | 2006-12-20 | 清华大学 | Process for preparing nano-carbon tubes |
AU2003299854A1 (en) | 2002-12-20 | 2004-07-22 | Alnaire Laboratories Corporation | Optical pulse lasers |
TWI304321B (en) * | 2002-12-27 | 2008-12-11 | Toray Industries | Layered products, electromagnetic wave shielding molded articles and method for production thereof |
BRPI0407495A (en) | 2003-02-13 | 2006-02-14 | Stichting Dutch Polymer Inst | reinforced polymer |
DE602004028298D1 (en) | 2003-03-07 | 2010-09-02 | Seldon Technologies Llc | Cleaning liquids with nanomaterials |
US7419601B2 (en) | 2003-03-07 | 2008-09-02 | Seldon Technologies, Llc | Nanomesh article and method of using the same for purifying fluids |
CN1286716C (en) * | 2003-03-19 | 2006-11-29 | 清华大学 | Method for growing carbon nano tube |
US7285591B2 (en) | 2003-03-20 | 2007-10-23 | The Trustees Of The University Of Pennsylvania | Polymer-nanotube composites, fibers, and processes |
US7074294B2 (en) | 2003-04-17 | 2006-07-11 | Nanosys, Inc. | Structures, systems and methods for joining articles and materials and uses therefor |
US7579077B2 (en) | 2003-05-05 | 2009-08-25 | Nanosys, Inc. | Nanofiber surfaces for use in enhanced surface area applications |
EP1648674A2 (en) * | 2003-04-29 | 2006-04-26 | James K. Sampson | Autoclave molding system for carbon composite materials |
FR2854409B1 (en) | 2003-04-30 | 2005-06-17 | Centre Nat Rech Scient | PROCESS FOR OBTAINING FIBERS HAVING A HIGH CONTENT OF COLLOIDAL PARTICLES AND COMPOSITE FIBERS OBTAINED |
JP2007516314A (en) * | 2003-05-22 | 2007-06-21 | ザイベックス コーポレーション | Nanocomposites and methods for nanocomposites |
US7261779B2 (en) | 2003-06-05 | 2007-08-28 | Lockheed Martin Corporation | System, method, and apparatus for continuous synthesis of single-walled carbon nanotubes |
US7321714B2 (en) * | 2003-06-13 | 2008-01-22 | Ers Company | Moisture-resistant nano-particle material and its applications |
US8187703B2 (en) | 2003-06-16 | 2012-05-29 | William Marsh Rice University | Fiber-reinforced polymer composites containing functionalized carbon nanotubes |
JP4970936B2 (en) * | 2003-06-16 | 2012-07-11 | ウィリアム・マーシュ・ライス・ユニバーシティ | Functionalization of carbon nanotube sidewalls at hydroxyl-terminated moieties |
CA2434447A1 (en) * | 2003-06-27 | 2004-12-27 | Eduardo Ruiz | Manufacture of composites through a flexible injection process using a double-cavity or multi-cavity mold |
US7318302B2 (en) * | 2003-07-10 | 2008-01-15 | Opperman Investments, Ltd. | Equipment support for a metal building |
JP5409999B2 (en) * | 2003-07-28 | 2014-02-05 | ウィリアム・マーシュ・ライス・ユニバーシティ | Side wall functionalization of carbon nanotubes with organosilanes to obtain polymer composites |
US7786736B2 (en) * | 2003-08-06 | 2010-08-31 | University Of Delaware | Method and system for detecting damage in aligned carbon nanotube fiber composites using networks |
US20050062024A1 (en) * | 2003-08-06 | 2005-03-24 | Bessette Michael D. | Electrically conductive pressure sensitive adhesives, method of manufacture, and use thereof |
US7354988B2 (en) * | 2003-08-12 | 2008-04-08 | General Electric Company | Electrically conductive compositions and method of manufacture thereof |
EP1506975A1 (en) | 2003-08-13 | 2005-02-16 | Vantico GmbH | Nanocomposites based on polyurethane or polyurethane-epoxy hybrid resins prepared avoiding isocyanates |
US20050042163A1 (en) * | 2003-08-20 | 2005-02-24 | Conocophillips Company | Metal loaded carbon filaments |
US7411019B1 (en) * | 2003-08-25 | 2008-08-12 | Eltron Research, Inc. | Polymer composites containing nanotubes |
US7235421B2 (en) * | 2003-09-16 | 2007-06-26 | Nasreen Chopra | System and method for developing production nano-material |
US7235159B2 (en) | 2003-09-17 | 2007-06-26 | Molecular Nanosystems, Inc. | Methods for producing and using catalytic substrates for carbon nanotube growth |
JP4380282B2 (en) | 2003-09-26 | 2009-12-09 | 富士ゼロックス株式会社 | Method for producing carbon nanotube composite structure |
US20050119371A1 (en) | 2003-10-15 | 2005-06-02 | Board Of Trustees Of Michigan State University | Bio-based epoxy, their nanocomposites and methods for making those |
KR100570634B1 (en) | 2003-10-16 | 2006-04-12 | 한국전자통신연구원 | Electromagnetic shielding materials manufactured by filling carbon tube and metallic powder as electrical conductor |
WO2005044723A2 (en) * | 2003-10-16 | 2005-05-19 | The University Of Akron | Carbon nanotubes on carbon nanofiber substrate |
US7354877B2 (en) * | 2003-10-29 | 2008-04-08 | Lockheed Martin Corporation | Carbon nanotube fabrics |
US7265175B2 (en) | 2003-10-30 | 2007-09-04 | The Trustees Of The University Of Pennsylvania | Flame retardant nanocomposite |
ES2291957T3 (en) | 2003-11-07 | 2008-03-01 | Bae Systems Plc | TRAINING OF METAL NANOHYLES. |
JP2007523822A (en) | 2004-01-15 | 2007-08-23 | ナノコンプ テクノロジーズ インコーポレイテッド | Systems and methods for the synthesis of elongated length nanostructures |
US20070189953A1 (en) | 2004-01-30 | 2007-08-16 | Centre National De La Recherche Scientifique (Cnrs) | Method for obtaining carbon nanotubes on supports and composites comprising same |
US7338684B1 (en) * | 2004-02-12 | 2008-03-04 | Performance Polymer Solutions, Inc. | Vapor grown carbon fiber reinforced composite materials and methods of making and using same |
US7628041B2 (en) | 2004-02-27 | 2009-12-08 | Alcatel-Lucent Usa Inc. | Carbon particle fiber assembly technique |
WO2005117170A2 (en) * | 2004-03-09 | 2005-12-08 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Multilayer electroactive polymer composite material |
WO2005088749A1 (en) * | 2004-03-12 | 2005-09-22 | Nagaoka University Of Technology | Membrane electrode assembly, method for producing the same, and solid state polymer fuel cell |
US7534486B2 (en) | 2004-03-20 | 2009-05-19 | Teijin Aramid B.V. | Composite materials comprising PPTA and nanotubes |
CN100383213C (en) | 2004-04-02 | 2008-04-23 | 清华大学 | Thermal interface material and its manufacturing method |
US7144563B2 (en) | 2004-04-22 | 2006-12-05 | Clemson University | Synthesis of branched carbon nanotubes |
US7399794B2 (en) | 2004-04-28 | 2008-07-15 | University Of South Florida | Polymer/carbon nanotube composites, methods of use and methods of synthesis thereof |
CN1290764C (en) * | 2004-05-13 | 2006-12-20 | 清华大学 | Method for producing Nano carbon tubes in even length in large quantities |
US20050260412A1 (en) | 2004-05-19 | 2005-11-24 | Lockheed Martin Corporation | System, method, and apparatus for producing high efficiency heat transfer device with carbon nanotubes |
CN1705059B (en) | 2004-05-26 | 2012-08-29 | 清华大学 | Carbon nano tube field emission device and preparation method thereof |
CN1296436C (en) | 2004-06-07 | 2007-01-24 | 清华大学 | Prepn process of composite material based on carbon nanotube |
KR20050121426A (en) * | 2004-06-22 | 2005-12-27 | 삼성에스디아이 주식회사 | Method for preparing catalyst for manufacturing carbon nano tubes |
US7921727B2 (en) * | 2004-06-25 | 2011-04-12 | University Of Dayton | Sensing system for monitoring the structural health of composite structures |
FR2872826B1 (en) | 2004-07-07 | 2006-09-15 | Commissariat Energie Atomique | LOW-TEMPERATURE GROWTH OF CARBON NANOTUBES ORIENTED |
WO2007008214A1 (en) * | 2004-07-22 | 2007-01-18 | William Marsh Rice University | Polymer / carbon-nanotube interpenetrating networks and process for making same |
FR2877262B1 (en) | 2004-10-29 | 2007-04-27 | Centre Nat Rech Scient Cnrse | COMPOSITE FIBERS AND DISSYMETRIC FIBERS FROM CARBON NANOTUBES AND COLLOIDAL PARTICLES |
TW200631111A (en) | 2004-11-04 | 2006-09-01 | Koninkl Philips Electronics Nv | Nanotube-based circuit connection approach |
WO2006051147A1 (en) | 2004-11-11 | 2006-05-18 | Gamesa Innovation And Technology, S.L. | Lightning conductor system for wind generator blades comprising carbon fibre laminates |
JP2008520526A (en) * | 2004-11-16 | 2008-06-19 | ハイピリオン カタリシス インターナショナル インコーポレイテッド | Method for producing single-walled carbon nanotubes |
US7309830B2 (en) | 2005-05-03 | 2007-12-18 | Toyota Motor Engineering & Manufacturing North America, Inc. | Nanostructured bulk thermoelectric material |
US7387578B2 (en) | 2004-12-17 | 2008-06-17 | Integran Technologies Inc. | Strong, lightweight article containing a fine-grained metallic layer |
CN1796334A (en) * | 2004-12-27 | 2006-07-05 | 陈瑾惠 | Carbon/Carbon Composite material and mfg. method thereof |
US20070153362A1 (en) * | 2004-12-27 | 2007-07-05 | Regents Of The University Of California | Fabric having nanostructured thin-film networks |
US7871591B2 (en) * | 2005-01-11 | 2011-01-18 | Honda Motor Co., Ltd. | Methods for growing long carbon single-walled nanotubes |
US7407901B2 (en) | 2005-01-12 | 2008-08-05 | Kazak Composites, Incorporated | Impact resistant, thin ply composite structures and method of manufacturing same |
DK1842248T3 (en) | 2005-01-20 | 2011-06-27 | Oticon As | Hearing aid with rechargeable battery and rechargeable battery |
US7811632B2 (en) | 2005-01-21 | 2010-10-12 | Ut-Battelle Llc | Molecular jet growth of carbon nanotubes and dense vertically aligned nanotube arrays |
US20060198956A1 (en) | 2005-03-04 | 2006-09-07 | Gyula Eres | Chemical vapor deposition of long vertically aligned dense carbon nanotube arrays by external control of catalyst composition |
CN100500555C (en) | 2005-04-15 | 2009-06-17 | 清华大学 | Carbon nanotube array structure and its preparation process |
CN100376478C (en) | 2005-04-22 | 2008-03-26 | 清华大学 | Apparatus for preparing carbon nano tube array structure |
US20080286546A1 (en) | 2005-05-03 | 2008-11-20 | Nanocomp Technologies, Inc. | Continuous glassy carbon composite materials reinforced with carbon nanotubes and methods of manufacturing same |
US7278324B2 (en) | 2005-06-15 | 2007-10-09 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Carbon nanotube-based sensor and method for detection of crack growth in a structure |
US7867616B2 (en) * | 2005-06-17 | 2011-01-11 | Honda Motor Co., Ltd. | Carbon single-walled nanotubes as electrodes for electrochromic glasses |
CA2613203C (en) * | 2005-06-28 | 2013-08-13 | The Board Of Regents Of The University Of Oklahoma | Methods for growing and harvesting carbon nanotubes |
US7811666B2 (en) * | 2005-07-01 | 2010-10-12 | Carolyn Dry | Multiple function, self-repairing composites with special adhesives |
US8313723B2 (en) * | 2005-08-25 | 2012-11-20 | Nanocarbons Llc | Activated carbon fibers, methods of their preparation, and devices comprising activated carbon fibers |
US20070110977A1 (en) | 2005-08-29 | 2007-05-17 | Al-Haik Marwan S | Methods for processing multifunctional, radiation tolerant nanotube-polymer structure composites |
CN1927988A (en) * | 2005-09-05 | 2007-03-14 | 鸿富锦精密工业(深圳)有限公司 | Heat interfacial material and method for making the same |
CN100482580C (en) | 2005-10-13 | 2009-04-29 | 鸿富锦精密工业(深圳)有限公司 | Preparation device of carbon nano-tube and its method |
WO2008054378A2 (en) | 2005-10-25 | 2008-05-08 | Massachusetts Institute Of Technology | Apparatus and methods for controlled growth and assembly of nanostructures |
US7709087B2 (en) | 2005-11-18 | 2010-05-04 | The Regents Of The University Of California | Compliant base to increase contact for micro- or nano-fibers |
US8148276B2 (en) | 2005-11-28 | 2012-04-03 | University Of Hawaii | Three-dimensionally reinforced multifunctional nanocomposites |
FR2893939B1 (en) | 2005-11-29 | 2008-02-22 | Snecma Propulsion Solide Sa | OXIDATION PROTECTION OF COMPOSITE MATERIALS CONTAINING CARBON |
DE602006018188D1 (en) | 2005-11-30 | 2010-12-23 | Shimane Prefectural Government | METAL-BASED COMPOSITE, CONTAINING BOTH MICROSCALE CARBON FIBER AND NANOSCAL CARBON FIBER |
US7592248B2 (en) | 2005-12-09 | 2009-09-22 | Freescale Semiconductor, Inc. | Method of forming semiconductor device having nanotube structures |
KR100745735B1 (en) * | 2005-12-13 | 2007-08-02 | 삼성에스디아이 주식회사 | Method for growing carbon nanotubes and manufacturing method of field emission device therewith |
US7465605B2 (en) | 2005-12-14 | 2008-12-16 | Intel Corporation | In-situ functionalization of carbon nanotubes |
DK3305465T3 (en) | 2005-12-14 | 2022-01-24 | Hontek Corp | METHOD AND COATING FOR THE PROTECTION AND REPAIR OF A WING SURFACE |
WO2008045109A2 (en) * | 2005-12-19 | 2008-04-17 | University Of Virginia Patent Foundation | Conducting nanotubes or nanostructures based composites, method of making them and applications |
EP1973845A4 (en) * | 2005-12-19 | 2009-08-19 | Nantero Inc | Production of carbon nanotubes |
WO2007072584A1 (en) | 2005-12-22 | 2007-06-28 | Showa Denko K.K. | Vapor-grown carbon fiber and production process thereof |
FR2895398B1 (en) * | 2005-12-23 | 2008-03-28 | Saint Gobain Vetrotex | GLASS YARN COATED WITH AN ENSIMAGE COMPRISING NANOPARTICLES. |
WO2008016388A2 (en) | 2006-01-30 | 2008-02-07 | Honda Motor Co., Ltd. | Method and apparatus for growth of high quality carbon single-walled nanotubes |
WO2008054839A2 (en) | 2006-03-03 | 2008-05-08 | William Marsh Rice University | Carbon nanotube diameter selection by pretreatment of metal catalysts on surfaces |
WO2008048705A2 (en) * | 2006-03-10 | 2008-04-24 | Goodrich Corporation | Low density lightning strike protection for use in airplanes |
EP2660385B1 (en) * | 2006-05-02 | 2018-07-04 | Goodrich Corporation | Lightning strike protection material |
US7687981B2 (en) | 2006-05-05 | 2010-03-30 | Brother International Corporation | Method for controlled density growth of carbon nanotubes |
WO2007136613A2 (en) * | 2006-05-17 | 2007-11-29 | University Of Dayton | Method of growing carbon nanomaterials on various substrates |
US8679630B2 (en) * | 2006-05-17 | 2014-03-25 | Purdue Research Foundation | Vertical carbon nanotube device in nanoporous templates |
EP2024283A2 (en) | 2006-05-19 | 2009-02-18 | Massachusetts Institute of Technology | Continuous process for the production of nanostructures including nanotubes |
US7534648B2 (en) | 2006-06-29 | 2009-05-19 | Intel Corporation | Aligned nanotube bearing composite material |
US20080020193A1 (en) * | 2006-07-24 | 2008-01-24 | Jang Bor Z | Hybrid fiber tows containning both nano-fillers and continuous fibers, hybrid composites, and their production processes |
US8389119B2 (en) * | 2006-07-31 | 2013-03-05 | The Board Of Trustees Of The Leland Stanford Junior University | Composite thermal interface material including aligned nanofiber with low melting temperature binder |
WO2008085550A2 (en) | 2006-08-02 | 2008-07-17 | Battelle Memorial Institute | Electrically conductive coating composition |
CN100591613C (en) * | 2006-08-11 | 2010-02-24 | 清华大学 | Carbon nano-tube composite material and preparation method thereof |
JP2008056546A (en) | 2006-09-01 | 2008-03-13 | Ihi Corp | Production device and production method for carbon structure |
WO2008027530A1 (en) * | 2006-09-01 | 2008-03-06 | Seldon Technologies, Llc | Nanostructured materials comprising support fibers coated with metal containing compounds and methods of using the same |
US7808248B2 (en) * | 2006-10-05 | 2010-10-05 | United Microelectronics Corp. | Radio frequency test key structure |
US8088614B2 (en) | 2006-11-13 | 2012-01-03 | Aurora Algae, Inc. | Methods and compositions for production and purification of biofuel from plants and microalgae |
KR100829001B1 (en) * | 2006-12-07 | 2008-05-14 | 한국에너지기술연구원 | The manufacturing method of reinforced composite using the method of synthesizing carbon nanowire directly on the glass fiber or the carbon fiber |
US7919151B2 (en) * | 2006-12-14 | 2011-04-05 | General Electric Company | Methods of preparing wetting-resistant surfaces and articles incorporating the same |
FR2909920B1 (en) * | 2006-12-15 | 2009-03-20 | Snecma Propulsion Solide Sa | METHOD FOR PRODUCING A CARTER-DIVERGENT ASSEMBLY |
US20080160286A1 (en) | 2006-12-27 | 2008-07-03 | Jawed Asrar | Modified discontinuous glass fibers for use in the formation of thermoplastic fiber-reinforced composite articles |
US8158217B2 (en) * | 2007-01-03 | 2012-04-17 | Applied Nanostructured Solutions, Llc | CNT-infused fiber and method therefor |
US8951632B2 (en) * | 2007-01-03 | 2015-02-10 | Applied Nanostructured Solutions, Llc | CNT-infused carbon fiber materials and process therefor |
US8951631B2 (en) | 2007-01-03 | 2015-02-10 | Applied Nanostructured Solutions, Llc | CNT-infused metal fiber materials and process therefor |
US20100279569A1 (en) | 2007-01-03 | 2010-11-04 | Lockheed Martin Corporation | Cnt-infused glass fiber materials and process therefor |
US20120189846A1 (en) | 2007-01-03 | 2012-07-26 | Lockheed Martin Corporation | Cnt-infused ceramic fiber materials and process therefor |
US20080176987A1 (en) | 2007-01-22 | 2008-07-24 | Trevet Fred W | System and methods for modified resin and composite material |
TW200833861A (en) | 2007-02-05 | 2008-08-16 | Nat Univ Tsing Hua | Method for growing carbon nanotubes directly on the carbon fiber |
US20080247938A1 (en) | 2007-04-05 | 2008-10-09 | Ming-Chi Tsai | Process of growing carbon nanotubes directly on carbon fiber |
US9233850B2 (en) | 2007-04-09 | 2016-01-12 | Nanotek Instruments, Inc. | Nano-scaled graphene plate films and articles |
CN101286384B (en) | 2007-04-11 | 2010-12-29 | 清华大学 | Electromagnetic shielding cable |
WO2008133299A1 (en) * | 2007-04-24 | 2008-11-06 | National Institute Of Advanced Industrial Science And Technology | Resin complex containing carbon nanotube, and method for production thereof |
US8388795B2 (en) | 2007-05-17 | 2013-03-05 | The Boeing Company | Nanotube-enhanced interlayers for composite structures |
US7718220B2 (en) | 2007-06-05 | 2010-05-18 | Johns Manville | Method and system for forming reinforcing fibers and reinforcing fibers having particulate protuberances directly attached to the surfaces |
FR2918081B1 (en) * | 2007-06-27 | 2009-09-18 | Cabinet Hecke Sa | METHOD FOR IMPREGNATING FIBERS CONTINUOUS BY A COMPOSITE POLYMERIC MATRIX COMPRISING A THERMOPLASTIC POLYMER |
US7883050B2 (en) * | 2007-06-28 | 2011-02-08 | The Boeing Company | Composites with integrated multi-functional circuits |
EP2011572B1 (en) * | 2007-07-06 | 2012-12-05 | Imec | Method for forming catalyst nanoparticles for growing elongated nanostructures |
US7785498B2 (en) * | 2007-07-19 | 2010-08-31 | Nanotek Instruments, Inc. | Method of producing conducting polymer-transition metal electro-catalyst composition and electrodes for fuel cells |
EP2173943A4 (en) | 2007-07-27 | 2012-08-29 | Dow Corning | Fiber structure and method of making same |
KR20150063590A (en) | 2007-08-02 | 2015-06-09 | 다우 글로벌 테크놀로지스 엘엘씨 | Amphiphilic block copolymers and inorganic nanofillers to enhance performance of thermosetting polymers |
WO2009023644A1 (en) * | 2007-08-13 | 2009-02-19 | Smart Nanomaterials, Llc | Nano-enhanced smart panel |
WO2009023643A1 (en) * | 2007-08-13 | 2009-02-19 | Smart Nanomaterials, Llc | Nano-enhanced modularly constructed composite panel |
US20090081441A1 (en) * | 2007-09-20 | 2009-03-26 | Lockheed Martin Corporation | Fiber Tow Comprising Carbon-Nanotube-Infused Fibers |
US20090081383A1 (en) * | 2007-09-20 | 2009-03-26 | Lockheed Martin Corporation | Carbon Nanotube Infused Composites via Plasma Processing |
JP5026209B2 (en) * | 2007-09-27 | 2012-09-12 | 富士フイルム株式会社 | Cross-linked carbon nanotube |
US7815820B2 (en) | 2007-10-18 | 2010-10-19 | General Electric Company | Electromagnetic interference shielding polymer composites and methods of manufacture |
KR20100080803A (en) | 2007-10-23 | 2010-07-12 | 도쿠슈 페이퍼 매뉴팩츄어링 가부시키가이샤 | Sheet-like article and method for producing the same |
KR20090041765A (en) | 2007-10-24 | 2009-04-29 | 삼성모바일디스플레이주식회사 | Carbon nanotubes and method of growing the same, hybrid structure and method of growing the same and light emitting device |
CN100567602C (en) | 2007-10-26 | 2009-12-09 | 哈尔滨工业大学 | Carbon nano-tube connecting carbon fiber multi-scale reinforcing body and preparation method thereof |
US20090126783A1 (en) | 2007-11-15 | 2009-05-21 | Rensselaer Polytechnic Institute | Use of vertical aligned carbon nanotube as a super dark absorber for pv, tpv, radar and infrared absorber application |
US8146861B2 (en) | 2007-11-29 | 2012-04-03 | Airbus Deutschland Gmbh | Component with carbon nanotubes |
CN101903649A (en) * | 2007-12-20 | 2010-12-01 | 维斯塔斯风力系统集团公司 | The arrester that comprises carbon nano-tube |
KR100878751B1 (en) | 2008-01-03 | 2009-01-14 | 한국에너지기술연구원 | Catalyst support using cellulose fiber, preparation method thereof, supported catalyst supporting nano metal catalyst on carbon nanotubes directly grown on surface of the catalyst support, and preparation method of the supported catalyst |
US20090191352A1 (en) | 2008-01-24 | 2009-07-30 | Nanodynamics, Inc. | Combustion-Assisted Substrate Deposition Method For Producing Carbon Nanosubstances |
JP2009184892A (en) | 2008-02-08 | 2009-08-20 | Dainippon Screen Mfg Co Ltd | Carbon nanotube forming device, and carbon nanotube forming method |
US7867468B1 (en) * | 2008-02-28 | 2011-01-11 | Carbon Solutions, Inc. | Multiscale carbon nanotube-fiber reinforcements for composites |
US9725314B2 (en) | 2008-03-03 | 2017-08-08 | Performancy Polymer Solutions, Inc. | Continuous process for the production of carbon nanofiber reinforced continuous fiber preforms and composites made therefrom |
GB0805640D0 (en) * | 2008-03-28 | 2008-04-30 | Hexcel Composites Ltd | Improved composite materials |
AU2009244152A1 (en) * | 2008-05-07 | 2009-11-12 | Nanocomp Technologies, Inc. | Nanostructure-based heating devices and method of use |
CN101582302B (en) | 2008-05-14 | 2011-12-21 | 清华大学 | Carbon nano tube/conductive polymer composite material |
US20090282802A1 (en) | 2008-05-15 | 2009-11-19 | Cooper Christopher H | Carbon nanotube yarn, thread, rope, fabric and composite and methods of making the same |
US7837905B2 (en) | 2008-05-16 | 2010-11-23 | Raytheon Company | Method of making reinforced filament with doubly-embedded nanotubes |
US20110159270A9 (en) * | 2008-06-02 | 2011-06-30 | Texas A & M University System | Carbon nanotube fiber-reinforced polymer composites having improved fatigue durability and methods for production thereof |
GB2451192B (en) | 2008-07-18 | 2011-03-09 | Vestas Wind Sys As | Wind turbine blade |
US20100059243A1 (en) * | 2008-09-09 | 2010-03-11 | Jin-Hong Chang | Anti-electromagnetic interference material arrangement |
KR101420680B1 (en) * | 2008-09-22 | 2014-07-17 | 삼성전자주식회사 | Apparatus and method for surface treatment of carbon fiber using resistive heating |
US7879681B2 (en) * | 2008-10-06 | 2011-02-01 | Samsung Electronics Co., Ltd. | Methods of fabricating three-dimensional capacitor structures having planar metal-insulator-metal and vertical capacitors therein |
US8574710B2 (en) * | 2008-10-10 | 2013-11-05 | Nano Terra Inc. | Anti-reflective coatings comprising ordered layers of nanowires and methods of making and using the same |
US8351220B2 (en) | 2009-01-28 | 2013-01-08 | Florida State University Research Foundation | Electromagnetic interference shielding structure including carbon nanotube or nanofiber films and methods |
WO2010144161A2 (en) | 2009-02-17 | 2010-12-16 | Lockheed Martin Corporation | Composites comprising carbon nanotubes on fiber |
JP5753102B2 (en) | 2009-02-27 | 2015-07-22 | アプライド ナノストラクチャード ソリューションズ リミテッド ライアビリティー カンパニーApplied Nanostructuredsolutions, Llc | Low temperature CNT growth using gas preheating method |
US20100224129A1 (en) | 2009-03-03 | 2010-09-09 | Lockheed Martin Corporation | System and method for surface treatment and barrier coating of fibers for in situ cnt growth |
US8052951B2 (en) | 2009-04-03 | 2011-11-08 | Ut-Battelle, Llc | Carbon nanotubes grown on bulk materials and methods for fabrication |
US20100272891A1 (en) | 2009-04-10 | 2010-10-28 | Lockheed Martin Corporation | Apparatus and method for the production of carbon nanotubes on a continuously moving substrate |
KR101696207B1 (en) * | 2009-04-27 | 2017-01-13 | 어플라이드 나노스트럭처드 솔루션스, 엘엘씨. | Cnt-based resistive heating for deicing composite structures |
US20100311866A1 (en) | 2009-06-05 | 2010-12-09 | University Of Massachusetts | Heirarchial polymer-based nanocomposites for emi shielding |
US8299159B2 (en) * | 2009-08-17 | 2012-10-30 | Laird Technologies, Inc. | Highly thermally-conductive moldable thermoplastic composites and compositions |
CN101698975B (en) | 2009-09-23 | 2011-12-28 | 北京航空航天大学 | Method for modifying carbonized pre-oxidized fiber preform interface by carbon nanotube |
US20110089958A1 (en) | 2009-10-19 | 2011-04-21 | Applied Nanostructured Solutions, Llc | Damage-sensing composite structures |
BR112012010907A2 (en) | 2009-11-23 | 2019-09-24 | Applied Nanostructured Sols | "Ceramic composite materials containing carbon nanotube infused fiber materials and methods for their production" |
US20110123735A1 (en) | 2009-11-23 | 2011-05-26 | Applied Nanostructured Solutions, Llc | Cnt-infused fibers in thermoset matrices |
AU2010328139B2 (en) | 2009-12-08 | 2014-09-18 | Applied Nanostructured Solutions, Llc | CNT-infused fibers in thermoplastic matrices |
US9167736B2 (en) | 2010-01-15 | 2015-10-20 | Applied Nanostructured Solutions, Llc | CNT-infused fiber as a self shielding wire for enhanced power transmission line |
EP2531558B1 (en) | 2010-02-02 | 2018-08-22 | Applied NanoStructured Solutions, LLC | Carbon nanotube-infused fiber materials containing parallel-aligned carbon nanotubes, methods for production thereof, and composite materials derived therefrom |
EP2629595A2 (en) * | 2010-09-23 | 2013-08-21 | Applied NanoStructured Solutions, LLC | CNT-infused fiber as a self shielding wire for enhanced power transmission line |
-
2010
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050230560A1 (en) * | 2001-09-18 | 2005-10-20 | Glatkowski Paul J | ESD coatings for use with spacecraft |
US20080237922A1 (en) * | 2001-11-09 | 2008-10-02 | Advanced Ceramics Research, Inc. | Composite components with integral protective casings |
US20080170982A1 (en) * | 2004-11-09 | 2008-07-17 | Board Of Regents, The University Of Texas System | Fabrication and Application of Nanofiber Ribbons and Sheets and Twisted and Non-Twisted Nanofiber Yarns |
US20090117363A1 (en) * | 2005-03-25 | 2009-05-07 | Brian Lee Wardle | Nano-engineered material architectures: ultra-tough hybrid nanocomposite system |
US20080075954A1 (en) * | 2006-05-19 | 2008-03-27 | Massachusetts Institute Of Technology | Nanostructure-reinforced composite articles and methods |
US20090121727A1 (en) * | 2007-09-14 | 2009-05-14 | The Regents Of The University Of Michigan | Electrical impedance tomography of nanoengineered thin films |
Non-Patent Citations (1)
Title |
---|
See also references of EP2504464A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10763003B2 (en) | 2013-11-21 | 2020-09-01 | Airbus Ds Gmbh | Method for manufacturing a charge dissipative surface layer |
WO2018115645A1 (en) * | 2016-12-22 | 2018-06-28 | Nexans | Composite material containing aluminium or copper - carbon nanotubes, and production method thereof |
FR3061209A1 (en) * | 2016-12-22 | 2018-06-29 | Nexans | ALUMINUM OR COPPER-NANOTUBE CARBON COMPOSITE MATERIAL AND PROCESS FOR PREPARING THE SAME |
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