WO2015073346A1 - An electrically conductive article containing shaped particles and methods of making same - Google Patents

An electrically conductive article containing shaped particles and methods of making same Download PDF

Info

Publication number
WO2015073346A1
WO2015073346A1 PCT/US2014/064728 US2014064728W WO2015073346A1 WO 2015073346 A1 WO2015073346 A1 WO 2015073346A1 US 2014064728 W US2014064728 W US 2014064728W WO 2015073346 A1 WO2015073346 A1 WO 2015073346A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrically conductive
shaped particles
composite
particles
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2014/064728
Other languages
English (en)
French (fr)
Inventor
Dipankar Ghosh
Jeffrey W. Mccutcheon
Scott R. Culler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to CN201480061407.3A priority Critical patent/CN105706181B/zh
Priority to JP2016530915A priority patent/JP6591413B2/ja
Priority to EP14803303.8A priority patent/EP3069353B1/en
Priority to US15/027,496 priority patent/US10785900B2/en
Publication of WO2015073346A1 publication Critical patent/WO2015073346A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0064—Earth or grounding circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon

Definitions

  • Electrically conductive articles including shaped particles distributed in a resin, and methods of making such electrically conductive articles are provided.
  • EMI electromagnetic interference
  • EMI shielding can be achieved utilizing a metallic structure, for instance.
  • EMI solutions are also being made in polymer composite forms due to the lightweight nature of polymer composites as compared to metals.
  • EMI tape for example, is commonly used including an electrically conductive filler in an adhesive.
  • the filler loading level is typically varied to provide a desired electrical conductivity for both grounding and EMI applications.
  • a typical filler includes coated sphere shaped particles with a wide particle size distribution (e.g., particles having a diameter ranging from 20 microns ( ⁇ ) to 50 ⁇ ).
  • Disadvantages of the wide size distribution of commercially available fillers in electrically conductive adhesive materials include that most of the particles are not utilized optimally as far as electrical conductivity is concerned and that long term electrical and adhesive performance of the materials is not maximized.
  • an electrically conductive article including a composite including (a) a resin, and (b) electrically conductive shaped particles distributed in the resin, the particles having a monosized distribution.
  • Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness and optionally each of the particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • a method for making an electrically conductive article including (a) providing electrically conductive shaped particles having a monosized distribution, and (b) distributing the electrically conductive shaped particles into a resin to form a composite.
  • Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness and optionally each of the particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • Figure 1 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising triangle shapes.
  • Figure 2 is a perspective schematic of an exemplary electrically conductive shaped particle comprising a pyramid shape.
  • Figure 3 is a perspective schematic of an exemplary electrically conductive shaped particle comprising a pyramid shape.
  • Figure 4 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising diamond shapes.
  • Figure 5 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising star shapes.
  • Figure 6 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising kite shapes.
  • Figure 7 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising hexagon shapes.
  • Figure 8 is a cross-sectional schematic of a prior art electrically conductive article containing sieved particles.
  • Figure 9 is a scanning electron microscope (SEM) image of an electrically conductive shaped particle.
  • Figure 10 is an SEM image of an electrically conductive shaped particle.
  • Figure 1 1A is a cross-sectional schematic of an exemplary electrically conductive shaped particle comprising a triangle shape.
  • Figure 1 IB is a cross-sectional schematic of an exemplary electrically conductive shaped particle comprising a rectangle shape.
  • Figure 12 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising trapezoid shapes and including conductive fibers.
  • Figure 13 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising rhombus shapes and including conductive fibers.
  • Figure 14 provides a cross-sectional schematic of an exemplary conductive coated fiber.
  • Figure 15 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising diamond shapes, and an interior substrate.
  • Figure 16 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising diamond shapes having two monosized distributions, and an interior substrate.
  • Figure 17 is a cross-sectional schematic of an exemplary electrically conductive article including shaped particles comprising diamond shapes and trapezoid shapes, and an interior substrate.
  • Figure 18 is a cross-sectional schematic of another exemplary electrically conductive article including shaped particles comprising diamond shapes and trapezoid shapes, and an interior substrate.
  • Figure 19A is a cross-sectional schematic of a sputtering apparatus.
  • Figure 19B is a perspective view of a schematic of a sputtering apparatus.
  • an electrically conductive article including a composite including (a) a resin, and (b) electrically conductive shaped particles distributed in the resin, the particles having a monosized distribution.
  • Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness and optionally each of the electrically conductive shaped particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • a method for making an electrically conductive article including (a) providing electrically conductive shaped particles having a monosized distribution, and (b) distributing the electrically conductive shaped particles into a resin to form a composite.
  • Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness and optionally each of the electrically conductive shaped particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • any numerical range by endpoints is meant to include the endpoints of the range, all numbers within the range, and any narrower range within the stated range (e.g. 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.8, 4, and 5).
  • all numbers expressing quantities or ingredients, measurement of properties and so forth used in the specification and embodiments are to be understood as being modified in all instances by the term "about.”
  • the numerical parameters set forth in the foregoing specification and attached listing of embodiments can vary depending upon the desired properties sought to be obtained by those skilled in the art utilizing the teachings of the present disclosure. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claimed embodiments, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
  • electrically conductive refers to a material that exhibits a contact resistance to electricity through at least one plane of 1,000 ohms ( ⁇ ) or less, preferably 100 ⁇ or less, more preferably 10.0 ⁇ or less, and most preferably 0.1 ⁇ or less.
  • shaped refers to a particle with at least a portion of the particle having a shape that is the negative of a mold cavity. This is in contrast to particles having a random shape (e.g., due to being formed by grinding or crushing a larger material) and a size distribution associated with their original manufacturing process.
  • the term "monosized" distribution with respect to a distribution of particles refers to a distribution in which at least 90% of the particles in the distribution have a dimensional surface area that does not vary by more than 15% of the average surface area of all of the particles in the distribution. "Dimensional" surface area excludes the surface area of any pores in the surface of the particles.
  • the dimensional surface area can further be determined by defining a central axis or a primary surface, for example, as a reference, followed by evaluation of the shaped particles for the shape dimensions, angles, planes, curvatures, slopes, and/or gradients with respect to the central axis or primary surface.
  • the term "height" with respect to a particle disposed in a composite refers to the dimension of the particle oriented in the same direction as the thickness of the composite.
  • average particle size refers to the mean length of the longest dimension, of a population of particles.
  • an electrically conductive article comprising a composite comprising (a) a resin; and (b) electrically conductive shaped particles distributed in the resin, the particles having a monosized distribution, each particle comprising a shape comprising at least a first surface and a second precisely intersecting the first surface at an angle a between about 5 degrees and about 150 degrees; wherein the composite comprises a thickness.
  • a method comprises (a) providing electrically conductive shaped particles having a monosized distribution, each particle comprising a shape comprising at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees; and (b) distributing the electrically conductive shaped particles into a resin to form a composite; wherein the composite comprises a thickness.
  • Each particle comprises at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the angle a of the second surface intersecting the first surface is between about 15 degrees and about 135 degrees, or between about 5 degrees and about 85 degrees, or between about 10 degrees and about 75 degrees, or between about 90 degrees and about 150 degrees.
  • the first surface optionally comprises at least one plane comprising a triangle shape, a diamond shape, a rectangle shape, a rhombus shape, a kite shape, a star shape, a hexagon shape, an octagon shape, a trapezoid shape, or a hemisphere shape.
  • one or more of the surfaces is curved rather than planar.
  • a cross-sectional schematic of an exemplary electrically conductive article 10 is provided, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a triangle shape distributed in a resin 16.
  • the composite comprises a thickness 8, and the height 19 of each of the electrically conductive shaped particles 14 is within 95% to 100% of the thickness 8 of the composite.
  • the particle 20 comprises a pyramid shape, having at least a first surface 22 and a second surface 24 intersecting the first surface 22 at an angle a between about 5 degrees and about 150 degrees.
  • each of the electrically conductive shaped particles comprises a shape comprising at least three surfaces meeting in a point. Referring to Figure 3, a perspective schematic of an exemplary electrically conductive shaped particle 30 is provided.
  • the particle 30 comprises a pyramid shape, having at least a first surface 32, a second surface 34 intersecting the first surface 32 at an angle a between about 5 degrees and about 150 degrees, and a third surface 36.
  • the particle 30 comprises a pyramid shape comprising at least three surfaces (32, 34, and 36) meeting in a point 38.
  • each of the electrically conductive shaped particles comprises a pyramid shape, a cone shape, a cube shape, a frusto-pyramid shape, a truncated sphere shape, or a frusto-conical shape.
  • each of the electrically conductive shaped particles comprises a three-sided pyramid shape, a four-sided pyramid shape, a five-sided pyramid shape, a five-sided triangle shape, or a diamond shape.
  • Figure 4 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a diamond shape distributed in a resin 16.
  • Figure 5 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a star shape distributed in a resin 16.
  • Figure 6 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a kite shape distributed in a resin 16.
  • Figure 7 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a hexagon shape distributed in a resin 16.
  • electrically conductive shaped particles comprising more than one shape are optionally included in a composite.
  • the electrically conductive article is employed to adhere two materials together.
  • the electrically conductive article in such embodiments usually comprises a composite having a first major surface, a second major surface opposite the first major surface, and a thickness between the first and second major surfaces.
  • Exemplary thicknesses of the composite for certain embodiments of the electrically conductive article comprises a thickness between 5 ⁇ and 500 ⁇ , or between 5 ⁇ and 1000 ⁇ , or between 5 ⁇ and 25 ⁇ , or between 10 ⁇ and 35 ⁇ , or between 10 ⁇ and 50 ⁇ , or between 30 ⁇ and 100 ⁇ .
  • the average particle size of the electrically conductive shaped particles will depend on the thickness of the composite when in use.
  • the height of the electrically conductive shaped particles is within about 95% of the thickness of the composite when in use (e.g., subjected to compression between two materials).
  • the height of at least 90% of the shaped particles is within 96% of the thickness of the composite when in use, or within 97%, or within 98%, or within 99%, or at 100% of the thickness of the composite when in use.
  • a height of an electrically conductive shaped particle that is greater than the thickness of the composite will negatively impact adhesion of the article.
  • the electrically conductive shaped particles comprise an average particle size of between 5 ⁇ and 200 ⁇ , or between 5 ⁇ and 50 ⁇ , or between 5 ⁇ and 25 ⁇ , or between 10 ⁇ and 35 ⁇ , or between 30 ⁇ and 75 ⁇ , or between 50 ⁇ and 75 ⁇ .
  • each of the electrically conductive shaped particles is located (or oriented) to be at or within the limit of the thickness of the composite, or each of the electrically conductive shaped particles is aligned to be fully contained within the composite, or no part of any of the electrically conductive shaped particles is located outside of the composite.
  • Such an orientation may be achieved by employing a coating method that includes a means for controlling the thickness of the composite (e.g., a bar notch coater).
  • a means for controlling the thickness of the composite e.g., a bar notch coater.
  • any shaped particles that are oriented to have a height beyond the composite thickness are forced (e.g., pushed over) into an alternate orientation in which the shaped particle no longer extends beyond the thickness of the composite.
  • each of the plurality of electrically conductive shaped particles comprises a height that is within 25% of the initial composite thickness, or within 50%, or within 75%, or within 90%, or within 95% of the thickness of the initial composite.
  • the composite in the electrically conductive article when utilized in an application thus, can be compressed from 0% to 75% of the thickness of the initial composite, or from 0% to 50%, or from 1 to 10% of the thickness of the initial composite.
  • the composite comprises thermoplastic and/or thermoset characteristics, flows with heat and or pressure, is a liquid, is porous (e.g., foamed), and/or comprises a low molecular weight resin
  • the capacity of the composite to be reduced in thickness from the initial composite (i.e., a "pre-application condition") to the composite when in use (i.e., a "post application condition") dictates a "Post/Pre” Ratio Factor (PPRF) that can be applied to the pre- application shaped particle height features.
  • PPRF Post/Pre” Ratio Factor
  • PPRF factor of 0.5 indicates that the composite will be intentionally reduced in thickness before shaped particles contact desired surfaces and thus the "thickness" range is multiplied by a factor of 0.5 (or range) to indicate the shaped particle size is within a pre-application composite thickness.
  • Example intentional decreases in thickness of the composite include for instance employing some of the composite resin to make fillets, fill areas that are not flat, fill voids, and form pins, etc., between substrates.
  • the resin portion of the composite can be displaced to allow the shaped particles to engage, contact, and/or embed within a desired surface.
  • Such resin displacement can occur by many means such as by flow characteristics of the resin under pressure, heat, vibration, compressibility of the resin (e.g., it may have a foamed structure, be a thermoplastic, and/or be a thermoset resin.)
  • Any practical resin and/or shaped particle carrier means e.g., solders, pastes, greases, gels, or films
  • the resin can be designed to have adhesive functions or non-adhesive functions in an end use. For non-adhesive functionality, mechanical clamps, gravity, and/or van der waals forces, for instance, may be employed to hold together the assembly.
  • the article in use can be described as a composite having a shaped particle plane and a resin carrier plane.
  • the shaped particle plane can extend past the resin plane, into a material surface (i.e., past the material surface plane), with the resin unable to protrude past the material surface plane for mechanical reasons during assembly (e.g., application pressure, time, heat, force, etc.).
  • the shaped particle plane in such a case is typically located somewhat past the nominal plane of the material surface.
  • an electrically conductive shaped particle that extends beyond the thickness of the composite will negatively impact adhesion of the article when in use if two rigid material surfaces are used that prevent embedding of the shaped particles and the shaped particles extend past the resin composite thickness following compression.
  • the shaped particles extending past the resin plane are not able to protrude into the material for various reasons (e.g., hardness, application pressure, etc.), and the shaped particles would in effect act as stand-offs, limiting the resin from making surface contact and forming an attachment.
  • the monosized shaped particles allow for a much greater percent of the shaped particles to be effectively engaged with a surface for electrical conductivity (and optionally thermal conductivity) of the shaped particles versus a typical distribution of random particles and/or fillers.
  • the normal distribution size particles when used with certain hard materials into which the particles may not be able to significantly embed or protrude will define a gap between a composite and a material surface. Thus, a small percent of the normal distribution particles may only be in contact with material surfaces while most are not contacting one or either material surface when in use.
  • a "monosized" distribution of particles refers to a distribution of particles in which at least 90% of the particles in the distribution has a surface area that does not vary by more than 15% of the average surface area of all of the particles in the distribution.
  • the surface area does not vary by a smaller amount, for example in certain embodiments at least 90%, or at least 95%, or at least 98% of the particles in the monosized distribution comprises a surface area that does not vary by more than 12% of the average surface area of all of the particles in the distribution, or by more than 10%, or by more than 8%, or by more than 6%, or by more than 5%, or by more than 4%, or by more than 3%, or by more than 2% or by more than 1% of the average surface area of all of the particles in the distribution.
  • electrically conductive particles In contrast to a monosized distribution of shaped particles, electrically conductive particles have previously typically exhibited a broader distribution of particles obtained by methods such as sieving a population of particles having a very wide size distribution.
  • particles that have a random shape obtained by crushing, grinding, etc., of a larger material also have a wide variation in aspect ratio, making them difficult to sieve into a narrow size distribution. Accordingly, methods such as sieving require more process steps and materials, and are thus often less cost- and time-efficient than the embodiments employing shaped particles disclosed herein.
  • even a relatively narrow size distribution of sieved particles will typically include many particles that do not have a height within a certain percentage of the thickness of a composite when in use, as well as some particles that have a height greater than the thickness of the composite.
  • the shorter particles are generally ineffective at providing electrical conductivity in the z-axis (i.e., through the thickness of the resin layer) and the taller particles generally decrease the adhesion of the article to an adjacent material.
  • a comparative electrically conductive article comprising a composite containing a statistically normal height- width distribution of randomly shaped particles
  • percent of the particles that are in actual contact between two material surfaces when such an electrically conductive article is in use is typically less than 10%, and more often less than 5%.
  • an electrically conductive article comprising a composite according to the disclosure identical except for comprising monosized electrically conductive shaped particles instead of randomly shaped particles, will have a higher percentage of particles contacting the desired material surfaces.
  • Preferably more than 10% of the monosized electrically conductive shaped particles are in contact with at least one material surface, preferably greater than 30%, more preferably greater than 50%, and optimally greater than 75% of the monosized electrically conductive shaped particles are in contact with at least one material surface, when the electrically conductive article is in use.
  • Figure 8 provides a cross-sectional schematic of an exemplary prior art electrically conductive article 80, including a plurality of sieved electrically conductive spherical particles 84 distributed in a resin 86.
  • an electrically conductive article 80 having a thickness of 50 ⁇ , for example, containing sieved substantially spherical electrically conductive particles 84 would typically contain particles ranging in nominal size from about 20 ⁇ to about 50 ⁇ .
  • the particles 84a having a diameter close to 50 ⁇ can participate in z-axis conductivity of the article 80, but the particles 84b having a smaller diameter (e.g., a diameter closer to 20 ⁇ ) are generally too far from at least one of the major surfaces of the resin to participate in z-axis conductivity.
  • embodiments according to the present disclosure advantageously require a smaller loading of electrically conductive particles to achieve the same conductivity as when employing a wider size distribution of electrically conductive particles.
  • the amount of electrically conductive shaped particles in the electrically conductive article of the present disclosure is optionally expressed in terms of its percent by weight of the composite or in terms of its percent by volume of the composite.
  • the use of shaped particles having a narrow size distribution allows the addition of lower loadings of the shaped particles as compared to particles having a wider size distribution, to achieve the same electrical conductivity.
  • the composite comprises between 1 wt. % and 95 wt. % of the electrically conductive shaped particles.
  • the composite comprises up to 95 wt. % of the electrically conductive shaped particles, or up to 75 wt. %, or up to 50 wt. %, or up to 30 wt.
  • the composite comprises at least 1 wt. % of the electrically conductive shaped particles, or at least 5 wt. %, or at least 10 wt. %, or at least 15 wt. %, or at least 20 wt. %, or at least 25 wt. % of the electrically conductive shaped particles. In certain embodiments, the composite comprises between 0.1 volume percent (vol. %) and 25 vol. % of the electrically conductive shaped particles. In certain embodiments, the composite comprises up to 25 vol. % of the electrically conductive shaped particles, or up to 20 vol. %, or up to 15 vol.
  • the composite comprises at least 0.1 vol. % of the electrically conductive shaped particles, or at least 0.5 vol. %, or at least 1 vol. %, or at least 5 vol. %, or at least 10 vol. % of the electrically conductive shaped particles
  • Providing the electrically conductive shaped particles typically comprises molding a core of each of the electrically conductive shaped particles.
  • Several suitable molding methods are described in detail in each of U.S. Patent Nos. 8,034, 137 (Erickson et al.), 8, 142,531 (Adefris et al.), and 8, 142,891 (Culler et al.), and U.S. Application Publication Nos. 2012/0227333 (Adefris et al.), and 2010/0146867 (Boden et al.).
  • the ability to employ a plurality of particles manufactured to have a monosized dispersion and shape corresponding to the shape of a mold cavity provides an efficient way to provide electrical conductivity to a composite, such as for an electrically conductive article.
  • the electrically conductive shaped particles employed have sufficient mechanical strength to be utilized in applications requiring structural integrity.
  • the electrically conductive shaped particles comprise a core comprising a Young's modulus of from 0.01 GigaPascal (GPa) to 1,000 GPa, more preferably from 1 GPa to 100 GPa, and most preferably from 10 GPa to 400 GPa.
  • each of the electrically conductive shaped particles comprises a core comprising alumina, zirconia, yttria, yttria-stabilized zirconia, silica, titanium carbide, boron carbide, boron nitride, or silicon carbide, and often the core comprises alumina.
  • Figure 9 provides a scanning electron microscope (SEM) image of a shaped particle formed of alumina having the shape of a truncated pyramid with four side facets, a base, and a top surface (provided by the truncation of the pyramid).
  • Figure 10 provides a SEM image of a five-sided triangle shaped particle formed of alumina.
  • Providing the electrically conductive shaped particles usually further comprises applying a metal coating to the core of each of the electrically conductive shaped particles to form the electrically conductive shaped particles.
  • the method of coating the cores is not particularly limited, for example and without limitation the metal coating optionally comprises sputtering the metal onto the core of each of the electrically conductive shaped particles.
  • Each of the metal coated electrically conductive shaped particles generally comprises a metal coating having an average thickness between 1 micrometer ( ⁇ ) and 50 ⁇ , or between 1 micrometer ( ⁇ ) and 20 ⁇ , or between 1 micrometer ( ⁇ ) and 10 ⁇ .
  • the metal coating comprises aluminum, silver, copper, nickel, gold, or alloys thereof, and often silver or copper.
  • Figure 1 1A provides a cross-sectional schematic of an exemplary electrically conductive shaped particle 40 comprising a triangle shape, having a core 42 and a metal coating 44.
  • Figure 1 IB provides a cross-sectional schematic of an exemplary electrically conductive shaped particle 40 comprising a rectangle shape, having a core 42 and a metal coating 44.
  • each of the electrically conductive shaped particles comprising a metal coating comprises between 10 percent by weight (wt. %) metal and 40 wt. % metal. In certain embodiments, each of the electrically conductive shaped particles comprises a metal coating comprising up to 70 wt. %, or up to 40 wt. % metal, or up to 25 wt. % metal, or up to 20 wt. % metal, or up to 15 wt. % metal. In certain embodiments, each of the electrically conductive shaped particles comprises a metal coating comprising at least 1 wt. % metal, or at least 10 wt. % metal, or at least 15 wt. % metal, or at least 25 wt.
  • each of the electrically conductive shaped particles comprises a metal coating comprising at least 15 wt. % metal. It was discovered that a metal coating level of 15 wt. % or greater typically ensured that sufficient metal was coated on the surface of each of the particles to adequately cover each of the facet surfaces and the edges of the formed surfaces, achieving reliable conductivity from one surface facet to another adjacent facet across an edge.
  • each of the electrically conductive shaped particles comprises a metal.
  • each of the electrically conductive shaped particles optionally comprises a core comprising aluminum, silver, copper, gold, or alloys thereof.
  • the majority of the electrically conductive shaped particles are oriented in the resin of the composite in substantially the same direction.
  • the resin of the electrically conductive article is not particularly limited, and will typically depend on the specific application for which the article is intended.
  • the resin comprises a thermoset polymer, a thermoplastic polymer, or an elastomeric polymer.
  • the resin comprises a pressure-sensitive adhesive, a liquid adhesive, a hot melt adhesive, and/or a structural adhesive (e.g., either a 1- or 2-part adhesive).
  • the resin optionally comprises an epoxy, a polyurea, an acrylic, a cyanoacrylate, a polyamide, a phenolic, a polyimide, a silicone, a polyester, an aminoplast, a melamine, an acrylated epoxy, a urethane, polyvinyl chloride, or a combination thereof.
  • the resin may include a thermosetting material or a thermoplastic material.
  • material refers to monomers, oligomers, prepolymers, and/or polymers.
  • the resin may include optional additives, and in the case of a resin material including a thermosetting material, may also include a curative or curatives.
  • curative is used broadly to include not only those materials that are conventionally regarded as curatives but also those materials that catalyze or accelerate the reaction of the curable material as well as those materials that may act as both curative and catalyst or accelerator.
  • thermoplastic refers to a material which undergoes a physical change upon the application of heat, i.e., the material flows upon heating and returns to its initial non- flowing state upon cooling.
  • a thermoplastic material is typically bonded by application of heat and/or pressure.
  • Thermoplastic adhesives can include hot-melt adhesives.
  • Hot melt adhesive can include natural or synthetic rubbers, butyl rubber, nitrile rubbers, synthetic polyisoprene, ethylene -propylene rubber, ethylene-propylene-diene monomer rubber (EPDM), polybutadiene, polyisobutylene, poly(alpha-olefin), styrene-butadiene random copolymer, fluoroelastomers, silicone elastomers, and combinations thereof.
  • An alternative to rubber includes polyvinyl chloride (PVC) resins, which are formed by polymerization of the monomer vinyl chloride (VCM).
  • thermosetting refers to a material, which undergoes a curing reaction that results in a chemical change upon bonding and an increase in the hardness of the material.
  • thermoset refers to a thermosetting material which has been cured.
  • a thermosetting material may generally be bonded by application of heat, actinic radiation such as UV, visible, or infrared, or microwave or X-ray energy.
  • a thermosetting material may also be caused to cure by mixing two reactive components, for example, by mixing a monomer mixture or oligomer mixture with a curative mixture.
  • the resin of the present disclosure can include a heat bondable material which, upon application of heat, undergoes an initial decrease in viscosity which promotes wetting of a substrate in which the article is in contact, and enhances adhesion and, in the case of, for example, a thermosetting material, causes a curing reaction.
  • thermosetting adhesives can be epoxy-based adhesives such as, for example, ethylene- glycidyl (meth)acrylate copolymers, phenolic-based adhesives, or (meth)acrylic adhesives. These adhesives can be crosslmked thermally, reactively (including moisture-cured), or photochemically.
  • the resin often includes acrylic pressure-sensitive adhesives. Typically, the acrylic pressure- sensitive adhesives are substantially solventless and are UV or visible-light curable.
  • Suitable acrylic adhesives include free radically-curing acrylics and cyanoacrylates.
  • the term "(meth)acrylic” as used herein refers to acrylic and methacrylic.
  • the acrylic adhesives can include conventional additives such as plasticizers, tougheners, flow modifiers, neutralizing agents, stabilizers, antioxidants, fillers, colorants, and the like.
  • Suitable free radically-curing acrylics can include, but are not limited to, those formed from methyl methacrylate, methacrylic acid, tetrahydrofurfuryl methacrylate, isobornyl acrylate, and isobornyl methacrylate.
  • Multifunctional (meth)acrylic acid esters can optionally be included as crosslinking agents.
  • multifunctional (meth)acrylates can include, but are not limited to, ethylene glycol dimethacrylate, 1 ,6-hexanediol dimethacrylate, 1 ,6-hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, 1 ,2-ethylene glycol diacrylate, the dimethacrylate of ethylene oxide modified bisphenol A and the diacrylate of ethylene oxide modified bisphenol A.
  • the (meth)acrylic adhesives can be cured through free radical initiated polymerization.
  • the free radicals are generated by a redox reaction.
  • Redox initiators can include peroxides, hydroperoxides, metal ions, saccharin, and N,N-dimethyl-p-toluidine.
  • the free radicals can be generated in a two-part adhesive system that cures at room temperature after mixing or in a one -part adhesive system.
  • the polymerization of the (meth)acrylic adhesive monomers to form a polymer useful in the present disclosure can be carried out using thermal energy, electron-beam radiation, ultraviolet radiation, and the like. Such polymerizations can be facilitated by a polymerization initiator, which can be a thermal initiator or a photoinitiator.
  • Suitable photoinitiators include, but are not limited to, benzoin ethers such as benzoin methyl ether and benzoin isopropyl ether, substituted benzoin ethers such as anisoin methyl ether, substituted acetophenones such as 2,2-dimethoxy-2-phenylacetophenone, and substituted alpha- ketols such as 2-methyl-2-hydroxypropiophenone.
  • Cyanoacrylate adhesives can include those formed from methyl cyanoacrylate and ethyl cyanoacrylate as well as other cyanoacrylate esters. They can optionally include additives such as hydroquinone.
  • the cyanoacrylate adhesive is chosen from adhesives sold by multiple companies under the name of Super Glue Gel, which have enhanced viscosity and appropriately long bondlines.
  • Suitable epoxy resins include those formed from monomers having at least two 1 ,2-cyclic ethers. Such compounds can be saturated or unsaturated, aliphatic, aromatic or heterocyclic, or can include combinations thereof.
  • Suitable epoxides may be solid or liquid at room temperature. It is also within the scope of this disclosure to use a material with functionality in addition to epoxide functionality but which is essentially unreactive with the epoxide functionality, for example, a material containing both epoxide and acrylic functionality.
  • An optional additive is a core-shell toughener. Examples of suitable epoxide-based adhesives that are commercially available include those available from 3M Company, St. Paul, MN under the trade designation "3M SCOTCH- WELD EPOXY ADHESIVE.”
  • Suitable epoxy resin compositions may be made from thermally curable epoxy resins.
  • the term epoxy resin composition will typically be used to refer to an uncured composition.
  • An exemplary epoxy resin composition includes one or more aromatic polyepoxides and one or more 9,9-bis(aminophenyl)fluorene curing agents.
  • Suitable aromatic polyepoxides include
  • suitable resins include blends of a diglycidylether of bisphenol A and a novolac epoxy, for example, 75 to 90% by weight EPON 100 IF and 25 to 10% by weight EPON 1050F based on the total weight of the resin.
  • Suitable curing agents for the epoxy resin compositions include, but are not limited to, di(4-aminophenyl)sulfone and 9,9-bis(aminophenyl)fluorene as described in U.S. Pat. No. 4,684,678.
  • active- hydrogen containing groups include primary alcohols, secondary alcohols, phenols and water.
  • Other active-hydrogen containing groups include primary and secondary amines which react with the isocyanate to form a urea linkage, thereby making a polyurea.
  • isocyanate- terminated materials and appropriate co-reactants are well known, and many are commercially available (see, for example, Gunter Oertel, "Polyurethane Handbook", Hanser Publishers, Kunststoff (1985)).
  • Urethane adhesives can include two-part room temperature-curing adhesives. Urethane adhesives can also include one -part moisture curing adhesives that are applied when warm including those available from 3M company, St. Paul, MN under the trade designation "3M SCOTCH- WELD POLYURETHANE REACTIVE ADHESIVES".
  • Suitable phenolic resins are generally described in "Encyclopedia of Polymer Science and Engineering”, Volume 1 1, John Wiley & Sons, Inc. (New York, 1988), pp. 45-92. Phenolic-based resins are generally described in Alphonsus V. Pocius, "Adhesion and Adhesives Technology: An Introduction”, Hanser Publishers (New York, 1997), pp.185- 188. Suitable phenolic materials are those made as the reaction product of phenols and formaldehydes, including resole phenolics and novolac phenolics. Examples of phenols include phenol, resorcinol, para-substituted phenol, cresol, and the reaction product of bisphenol-A and the monoglycidyl ether of bisphenol-A.
  • Suitable silicone resins include moisture-cured silicones, condensation-cured silicones, and addition-cured silicones, such as hydroxyl-terminated silicones, silicone rubber, and fluoro- silicone.
  • suitable commercially available silicone pressure-sensitive adhesive compositions comprising silicone resin include Dow Coming's 280A, 282, 7355, 7358, 7502, 7657, Q2-7406, Q2-7566 and Q2-7735; General Electric's PSA 590, PSA 600, PSA 595, PSA 610, PSA 518 (medium phenyl content), PSA 6574 (high phenyl content), and PSA 529, PSA 750-D 1 , PSA 825-D1, and PSA 800-C.
  • An example of a two-part silicone resin is commercially available under the trade designation "SILASTIC J" from Dow Chemical Company, Midland, MI.
  • Suitable polyurea resins include those prepared by reacting an isocyanate-functional material with an amine- functional material.
  • the polyurea is included in a pressure - sensitive adhesive or a thermosetting adhesive.
  • a polyurea-based polymer comprises a segmented copolymer, in which at least about 0.5 mole fraction of linkages between segments in a backbone of the polymer are urea linkages.
  • Polyester resins include polymers having monomer units linked together by an ester group, i.e., -COO-. Typically, polyester resins are formed by polymerizing a polyhydric alcohol with a polybasic acid. Exemplary polyester resins include polyethylene terephthalate (PET) and polyethylene terephtalate glycol (PETG).
  • PET polyethylene terephthalate
  • PETG polyethylene terephtalate glycol
  • Suitable polyimide resins include those prepared by reacting primary aliphatic diamines and dicarboxylic dianhydrides, such as reacting pyromellitic dianhydride with 4,4'-oxydianiline. Curing is typically accomplished by eliminating water via heating to close the imide rings present along the polymer chain, thereby forming the polyimide structure.
  • Polyamide resin materials are characterized by having an amide group, i.e., -C(0)NH-.
  • the polyamide resin materials usually include polyamide hot melt adhesives.
  • Suitable polyamides include for example terpolymers produced from lactams (such as lauryl lactam) and diamines.
  • Commercially available thermoplastic polyamides include those having the trade designations VESTAMELT 732, VESTAMELT 730, VESTAMELT 742, VESTAMELT 750/751,
  • VESTAMELT 755, and VESTAMELT 760 from Creanova, Somerset, N.J.
  • Melamine resins are amino resins formed from a condensation polymerization of trimethylol melamine, typically also reacting with melamine and formaldehyde. Further, butylated melamine resins are optionally formed by including alcohols such as butyl during the
  • Aminoplast resins are thermosetting adhesives formed by condensation of an amine- containing compound with an aldehyde. Suitable amine-containing compounds include for example melamine or urea. Some useful aminoplast resins can be monomeric or oligomeric. Typically, the aminoplast resins have at least one pendant ⁇ , ⁇ -unsaturated carbonyl group per molecule. These ⁇ , ⁇ -unsaturated carbonyl groups can be acrylate, methacrylate, or acrylamide groups. Examples of such resins include N-hydroxymethyl-acrylamide, ⁇ , ⁇ '- oxydimethylenebisacrylamide, ortho and para acrylamidomethylated phenol,
  • the resin may comprise at least one of a grease or wax.
  • Suitable commercially available greases include non-silicone resin systems having the trade designations 3M
  • Waxes include long alkyl chains, either with or without functional groups such as fatty acid esters and alcohols. Waxes or mixtures of waxes which may be used include materials of vegetable, animal, petroleum, and/or mineral derived origin.
  • Representative waxes include carnauba wax, candelilla wax, oxidized Fischer- Tropsch wax, microcrystalline wax, lanolin; bayberry wax, palm kernal wax, mutton tallow wax, emulsifiable polyethylene wax, polyethylene copolymer wax, emulsifiable petroleum derived waxes, montan wax derivatives, emulsifiable polypropylene wax, and oxidized polyethylene wax.
  • the composite further comprises a plurality of conductive fillers comprising an aspect ratio of length to height of greater than 2 : 1 , or greater than 4 : 1 , or greater than 10: 1.
  • the length is the longest dimension and the height is the smallest dimension (with the width equal to or greater than the height).
  • Such conductive fillers typically provide conductivity in the x-y plane, which adds to the electrical conductivity in the z-axis being provided by the electrically conductive shaped particles in the composite.
  • Figure 12 is a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a trapezoid shape and a plurality of conductive fillers 17 distributed in a resin 16.
  • Figure 13 is a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a rhombus shape and a plurality of conductive fillers 17 distributed in a resin 16.
  • the plurality of conductive fillers is not particularly limited, and optionally comprises fibers, shards, woven and/or nonwoven scrims, coated with metal.
  • the fibers, shards, woven and nonwoven scrims comprise glass, polymer, carbon, or ceramic.
  • Figure 14 provides a cross-sectional schematic of an exemplary conductive coated fiber 60 comprising a needle shape, having a fiber 62 and a metal coating 64.
  • the plurality of conductive fillers comprises carbon black or graphene based materials, for example doped or undoped graphene.
  • Suitable graphene based materials comprise for example and without limitation, flakes, exfoliated graphite, graphene nanoplatelets, functionalized graphene sheets, or a combination thereof.
  • the electrically conductive article further comprises conductive and/or non-conductive fillers having a typical particle size distribution (i.e., not monosized), to enhance the performance of the article.
  • conductive and/or non-conductive fillers having a typical particle size distribution (i.e., not monosized), to enhance the performance of the article.
  • Such fillers are used primarily to enhance EMI shielding EMI absorbing, and/or thermal conductivity of the composite, or to modify composite properties for shear strength, flow characteristics, fracture resistance, and/or environmental stability.
  • the electrically conductive article comprises a substrate, wherein the composite is attached to a major surface of the substrate.
  • the substrate is not particularly limited, and often comprises a nonwoven material, a woven material, a metal foil, a polymer, or a (woven) fabric. Such substrates are often employed when the electrically conductive article comprises an adhesive tape.
  • the electrically conductive article comprises a substrate provided between two layers of electrically conductive resin, thus providing a double-sided electrically conductive article.
  • Figure 15 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a plurality of electrically conductive shaped particles 14 comprising a diamond shape distributed in a resin 16, and an electrically conductive internal substrate 92 positioned approximately in the center of the thickness of the article 10.
  • the height of the plurality of electrically conductive shaped particles 14 allows the particles to contact both the internal substrate 92 and one major surface 94, for instance, of the composite 12, thus two rows of electrically conductive shaped particles 14 are included to cooperatively provide conductivity through the thickness of the article 10 when it is in use (e.g., subjected to compression between two materials).
  • Figure 16 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a first plurality of electrically conductive shaped particles 14a and a second plurality of electrically conductive shaped particles 14b, each comprising a diamond shape, distributed in a resin 16.
  • the article further includes an electrically conductive internal substrate 92 positioned approximately in the center of the thickness of the article 10. The height of the first plurality of electrically conductive shaped particles 14a allows the particles to contact both the internal substrate 92 and one major surface 94 of the composite 12, whereas the height of the second plurality of electrically conductive shaped particles 14b
  • the second shaped particles 14b (approximately twice that of the first shaped particles 14a) allows the second shaped particles 14b to contact both major surfaces of the composite 12, and penetrate through the internal substrate 92, to provide conductivity through the thickness of the article 10 when it is in use (e.g., subjected to compression between two materials).
  • Figure 17 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a first plurality of electrically conductive shaped particles 14a comprising a trapezoid shape and a second plurality of electrically conductive shaped particles 14b comprising a diamond shape, distributed in a resin 16.
  • the article further includes an electrically conductive internal substrate 92 positioned at approximately one third of the distance of the thickness of the article 10.
  • the height of the first plurality of electrically conductive shaped particles 14a allows the particles to contact both the internal substrate 92 and a first major surface 94 of the composite 12, whereas the height of the second plurality of electrically conductive shaped particles 14b allows the particles to contact both the internal substrate and a second, opposing, major surface 96 of the composite 12.
  • one row of the first shaped particles 14a and one row of the second shaped particles 14b are included to cooperatively provide conductivity through the thickness of the article 10 when it is in use (e.g., subjected to compression between two materials).
  • Figure 18 provides a cross-sectional schematic of an exemplary electrically conductive article 10, including a composite 12 comprising a first plurality of electrically conductive shaped particles 14a comprising a trapezoid shape and a second plurality of electrically conductive shaped particles 14b comprising a diamond shape, distributed in a resin 16.
  • the article further includes an electrically conductive internal substrate 92 positioned approximately in the center of the thickness of the article 10.
  • the height of the first plurality of electrically conductive shaped particles 14a allows the particles to contact both the internal substrate and a first major surface 94 of the composite 12, whereas the height of the second plurality of electrically conductive shaped particles 14b allows the particles to contact both the internal substrate 92 and a second, opposing, major surface 96 of the composite 12.
  • the electrically conductive shaped particles partially penetrate the internal electrically conductive substrate 92 due to its loose, nonwoven (or in some cases woven) structure.
  • one row of the first shaped particles 14a and one row of the second shaped particles 14b are included to cooperatively provide conductivity through the thickness of the article 10 when it is in use (e.g., subjected to compression between two materials).
  • the electrically conductive article exhibits a contact resistance of the z- axis of less than 100.00 ohms, or less than 10.00 ohms, or less than 2.00 ohms, or less than 0.05 ohms, such as between 0.005 and 1.00 ohms, or between 0.05 and 1.00 ohms, or between 0.05 and 0.80 ohms, or between 0.05 and 0.60 ohms, or between 0.05 and 0.40 ohms, or between 0.005 and 0.40 ohms, as measured by standard contact resistance tests.
  • Item 1 is an electrically conductive article including a composite including (a) a resin, and
  • each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness.
  • Item 2 is an electrically conductive article of item 1 , wherein each of the particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • Item 3 is an electrically conductive article of item 1 or item 2, wherein the angle a is between about 15 degrees and about 135 degrees.
  • Item 4 is an electrically conductive article of any one of items 1 through 3, wherein the angle a is between about 5 degrees and about 85 degrees.
  • Item 5 is an electrically conductive article of any one of items 1 through 4, wherein the angle a is between about 10 degrees and about 75 degrees.
  • Item 6 is an electrically conductive article of any one of items 1 through 3, wherein the angle a is between about 90 degrees and about 150 degrees.
  • Item 7 is an electrically conductive article of any one of items 1 through 6, wherein each of the electrically conductive shaped particles includes a metal coating having an average thickness between 1 micrometers ( ⁇ ) and 50 ⁇ .
  • Item 8 is an electrically conductive article of any one of items 1 through 7, wherein each of the electrically conductive shaped particles includes a metal coating having an average thickness between 1 micrometers ( ⁇ ) and 20 ⁇ .
  • Item 9 is an electrically conductive article of any one of items 1 through 8, wherein each of the electrically conductive shaped particles has a height and a width and has a ratio of heigh width of between 2: 1 and 1 : 1.
  • Item 10 is an electrically conductive article of any one of items 1 through 9, wherein each of the electrically conductive shaped particles includes between 10 percent by weight (wt. %) metal and 40 wt. % metal.
  • Item 1 1 is an electrically conductive article of any one of items 1 through 10, wherein each of the plurality of shaped electrically conductive particles includes between 10 wt. % metal and 20 wt. % metal.
  • Item 12 is an electrically conductive article of any one of items 1 through 10, wherein each of the electrically conductive shaped particles includes between 25 wt. % metal and 40 wt. % metal.
  • Item 13 is an electrically conductive article of any one of items 1 through 12, wherein the first surface includes a triangle shape, a diamond shape, a rectangle shape, a rhombus shape, a kite shape, a trapezoid shape, a star shape, a hexagon shape, an octagon shape, or a hemisphere shape.
  • Item 14 is an electrically conductive article of any one of items 1 through 12, wherein each of the electrically conductive shaped particles includes a shape comprising at least three surfaces meeting in a point.
  • Item 15 is an electrically conductive article of any one of items 1 through 12, wherein each of the electrically conductive shaped particles includes a pyramid shape, a cone shape, a cube shape, a frusto-pyramid shape, a truncated sphere shape, or a frusto-conical shape.
  • Item 16 is an electrically conductive article of any one of items 1 through 15, wherein each of the electrically conductive shaped particles includes a three-sided pyramid shape, a four-sided pyramid shape, a five-sided pyramid shape, a five-sided triangle shape, or a diamond shape.
  • Item 17 is an electrically conductive article of any one of items 1 through 16, wherein each of the electrically conductive shaped particles has a core including alumina, zirconia, yttria, yttria- stabilized zirconia, silica, titanium carbide, boron carbide, boron nitride, or silicon carbide.
  • Item 18 is an electrically conductive article of any one of items 1 through 17, wherein each of the electrically conductive shaped particles has a core including alumina.
  • Item 19 is an electrically conductive article of any one of items 1 through 18, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 100 ⁇ .
  • Item 20 is an electrically conductive article of any one of items 1 through 19, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 50 ⁇ .
  • Item 21 is an electrically conductive article of any one of items 1 through 20, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 25 ⁇ .
  • Item 22 is an electrically conductive article of any one of items 1 through 20, wherein the electrically conductive shaped particles have an average particle size of between 10 ⁇ and 35 ⁇ .
  • Item 23 is an electrically conductive article of any one of items 1 through 19, wherein the electrically conductive shaped particles have an average particle size of between 30 ⁇ and 75 ⁇ .
  • Item 24 is an electrically conductive article of any one of items 1 through 19, wherein the electrically conductive shaped particles have an average particle size of between 50 ⁇ and 75 ⁇ .
  • Item 25 is an electrically conductive article of any one of items 1 through 24, wherein each of the electrically conductive shaped particles has a metal coating including aluminum, silver, copper, gold, or alloys thereof.
  • Item 26 is an electrically conductive article of any one of items 1 through 25, wherein each of the electrically conductive shaped particles has a metal coating including silver or copper.
  • Item 27 is an electrically conductive article of any one of items 1 through 24, wherein each of the electrically conductive shaped particles has a core including aluminum, silver, copper, gold, or alloys thereof.
  • Item 28 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 5 wt. % and 75 wt. % of the electrically conductive shaped particles.
  • Item 29 is an electrically conductive article of any one of items 1 through 28, wherein the composite includes between 5 wt. % and 25 wt. % of the electrically conductive shaped particles.
  • Item 30 is an electrically conductive article of any one of items 1 through 29, wherein the composite includes between 5 wt. % and 10 wt. % of the electrically conductive shaped particles.
  • Item 31 is an electrically conductive article of any one of items 1 through 28, wherein the composite includes between 10 wt. % and 50 wt. % of the electrically conductive shaped particles.
  • Item 32 is an electrically conductive article of any one of items 1 through 28, wherein the composite includes between 10 wt. % and 30 wt. % of the electrically conductive shaped particles.
  • Item 33 is an electrically conductive article of any one of items 1 through 28, wherein the composite includes between 25 wt. % and 75 wt. % of the electrically conductive shaped particles.
  • Item 34 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 0.1 volume percent (vol. %) and 15 vol. % of the electrically conductive shaped particles.
  • Item 35 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 0.5 vol. % and 5 vol. % of the electrically conductive shaped particles.
  • Item 36 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 1 vol. % and 15 vol. % of the electrically conductive shaped particles.
  • Item 37 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 1 vol. % and 10 vol. % of the electrically conductive shaped particles.
  • Item 38 is an electrically conductive article of any one of items 1 through 27, wherein the composite includes between 5 vol. % and 10 vol. % of the electrically conductive shaped particles.
  • Item 39 is an electrically conductive article of any one of items 1 through 38, wherein the composite has a thickness between 5 ⁇ and 200 ⁇ .
  • Item 40 is an electrically conductive article of any one of items 1 through 39, wherein the composite has a thickness between 5 ⁇ and 50 ⁇ .
  • Item 41 is an electrically conductive article of any one of items 1 through 40, wherein the composite has a thickness between 5 ⁇ and 25 ⁇ .
  • Item 42 is an electrically conductive article of any one of items 1 through 40, wherein the composite has a thickness between 10 ⁇ and 35 ⁇ .
  • Item 43 is an electrically conductive article of any one of items 1 through 39, wherein the composite has a thickness between 50 ⁇ and ⁇ .
  • Item 44 is an electrically conductive article of any one of items 1 through 39, wherein the composite has a thickness between 30 ⁇ and 100 ⁇ .
  • Item 45 is an electrically conductive article of any one of items 1 through 44, wherein the resin includes a thermoset polymer, a thermoplastic polymer, or an elastomeric polymer.
  • Item 46 is an electrically conductive article of any one of items 1 through 45, wherein the resin includes an epoxy, a polyurea, an acrylic, a cyanoacrylate, a polyamide, a phenolic, a polyimide, a silicone, a polyester, an aminoplast, a melamine, an acrylated epoxy, a urethane, polyvinyl chloride, or a combination thereof.
  • the resin includes an epoxy, a polyurea, an acrylic, a cyanoacrylate, a polyamide, a phenolic, a polyimide, a silicone, a polyester, an aminoplast, a melamine, an acrylated epoxy, a urethane, polyvinyl chloride, or a combination thereof.
  • Item 47 is an electrically conductive article of any one of items 1 through 44, wherein the resin includes a pressure-sensitive adhesive, a liquid adhesive, a hot melt adhesive, or a structural adhesive.
  • Item 48 is an electrically conductive article of any one of items 1 through 47, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 2: 1.
  • Item 49 is an electrically conductive article of any one of items 1 through 48, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 4: 1.
  • Item 50 is an electrically conductive article of any one of items 1 through 44, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 10: 1.
  • Item 51 is an electrically conductive article of any one of items 48 through 50, wherein the plurality of conductive fillers includes fibers coated with metal.
  • Item 52 is an electrically conductive article of item 50, wherein the fibers include glass, polymer, carbon, or ceramic.
  • Item 53 is an electrically conductive article of any one of items 48 through 50, wherein the plurality of conductive fillers includes carbon black or graphene based materials.
  • Item 54 is an electrically conductive article of item 53, wherein the graphene based materials include doped or undoped graphene.
  • Item 55 is an electrically conductive article of item 53 or item 54, wherein the graphene based materials include flakes, exfoliated graphite, graphene nanoplatelets, functionalized graphene sheets, or a combination thereof.
  • Item 56 is an electrically conductive article of any one of items 1 through 55, further including a substrate, wherein the composite is attached to a major surface of the substrate.
  • Item 57 is an electrically conductive article of item 56, wherein the substrate includes a metal foil, a polymer, or a fabric.
  • Item 58 is an electrically conductive article of item 56 or item 57, wherein the substrate comprises fabric.
  • Item 59 is an electrically conductive article of any one of items 1 through 58, wherein the composite exhibits a contact resistance of the z-axis of between 0.005 and 1.00 ohms as measured by the Z-Axis Resistance Test.
  • Item 60 is an electrically conductive article of any one of items 1 through 59, wherein the composite exhibits a contact resistance of the z-axis of between 0.05 and 0.60 ohms as measured by the Z-Axis Resistance Test.
  • Item 61 is an electrically conductive article of any one of items 1 through 60, wherein the intersection of the first surface and the second surface of at least 80% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 62 is an electrically conductive article of any one of items 1 through 61, wherein the intersection of the first surface and the second surface of at least 90% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 63 is an electrically conductive article of any one of items 1 through 62, wherein the intersection of the first surface and the second surface of at least 95% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 64 is an electrically conductive article of any one of items 1 through 63, wherein at least 90% of the particles in the monosized distribution comprise a surface area that does not vary by more than 5% of the average surface area of all of the particles in the distribution.
  • Item 65 is an electrically conductive article of any one of items 1 through 64, wherein at least 90% of the particles in the monosized distribution comprise a surface area that does not vary by more than 3% of the average surface area of all of the particles in the distribution.
  • Item 66 is an electrically conductive article of any one of items 1 through 65, wherein at least 90% of the particles in the monosized distribution comprise a surface area that does not vary by more than 2% of the average surface area of all of the particles in the distribution.
  • Item 67 is an electrically conductive article of any one of items 1 through 66, wherein at least 90% of the particles in the monosized distribution comprise a surface area that does not vary by more than 1% of the average surface area of all of the particles in the distribution.
  • Item 68 is a method for making an electrically conductive article including (a) providing electrically conductive shaped particles having a monosized distribution, and (b) distributing the electrically conductive shaped particles into a resin to form a composite.
  • Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees.
  • the composite has a thickness.
  • Item 69 is a method of item 68, wherein the providing the electrically conductive shaped particles includes molding a core of each of the electrically conductive shaped particles.
  • Item 70 is a method of item 69, wherein each of the electrically conductive shaped particles has a core including alumina, zirconia, yttria, yttria-stabilized zirconia, silica, titanium carbide, boron carbide, boron nitride, or silicon carbide.
  • Item 71 is a method of item 69 or item 70, wherein each of the electrically conductive shaped particles has a core including alumina.
  • Item 72 is a method of any one of items 69 through 71 , wherein each of the electrically conductive shaped particles has a core including aluminum, silver, copper, gold, or alloys thereof.
  • Item 73 is a method of any one of items 69 through 71 , wherein the providing the electrically conductive shaped particles further includes applying a metal coating to the core of each of the electrically conductive shaped particles to form the electrically conductive shaped particles.
  • Item 74 is a method of item 73, wherein the metal coating includes sputtering the metal onto the core of each of the electrically conductive shaped particles.
  • Item 75 is a method of any one of items 68 through 74, wherein each of the particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite.
  • Item 76 is a method of any one of items 68 through 75, wherein the angle a is between about 15 degrees and about 135 degrees.
  • Item 77 is a method of any one of items 68 through 75, wherein the angle a is between about 5 degrees and about 85 degrees.
  • Item 78 is a method of any one of items 68 through 75 or 77, wherein the angle a is between about 10 degrees and about 75 degrees.
  • Item 79 is a method of any one of items 68 through 75, wherein the angle a is between about 90 degrees and about 150 degrees.
  • Item 80 is a method of any one of items 68 through 79, wherein each of the electrically conductive shaped particles includes a metal coating having an average thickness between 1 micrometers ( ⁇ ) and 50 ⁇ .
  • Item 81 is a method of any one of items 68 through 80, wherein each of the electrically conductive shaped particles includes a metal coating having an average thickness between 1 micrometers ( ⁇ ) and 20 ⁇ .
  • Item 82 is a method of any one of items 68 through 81, wherein each of the electrically conductive shaped particles has a height and a width and has a ratio of height: width of between 2: 1 and 1 : 1.
  • Item 83 is a method of any one of items 68 through 82, wherein each of the electrically conductive shaped particles includes between 10 percent by weight (wt. %) metal and 40 wt. % metal.
  • Item 84 is a method of any one of items 68 through 83, wherein each of the plurality of shaped electrically conductive particles includes between 10 wt. % metal and 20 wt. % metal.
  • Item 85 is a method of any one of items 68 through 83, wherein each of the electrically conductive shaped particles includes between 25 wt. % metal and 40 wt. % metal.
  • Item 86 is a method of any one of items 68 through 85, wherein each of the electrically conductive shaped particles has a surface including a triangle shape, a diamond shape, a rectangle shape, a rhombus shape, a kite shape, a star shape, a trapezoid shape, a hexagon shape, an octagon shape, or a hemisphere shape.
  • Item 87 is a method of any one of items 68 through 85, wherein each of the electrically conductive shaped particles has a shape including at least three surfaces meeting in a point.
  • Item 88 is a method of any one of items 68 through 85, wherein each of the electrically conductive shaped particles includes a pyramid shape, a cone shape, a cube shape, a frusto- pyramid shape, a truncated sphere shape, or a frusto-conical shape.
  • Item 89 is a method of any one of items 68 through 85, wherein each of the electrically conductive shaped particles comprises a three-sided pyramid shape, a four-sided pyramid shape, a five-sided pyramid shape, a five-sided triangle shape, or a diamond shape.
  • Item 90 is a method of any one of items 68 through 89, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 200 ⁇ .
  • Item 91 is a method of any one of items 68 through 90, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 50 ⁇ .
  • Item 92 is a method of any one of items 68 through 91, wherein the electrically conductive shaped particles have an average particle size of between 5 ⁇ and 25 ⁇ .
  • Item 93 is a method of any one of items 68 through 91, wherein the electrically conductive shaped particles have an average particle size of between 10 ⁇ and 35 ⁇ .
  • Item 94 is a method of any one of items 68 through 90, wherein the electrically conductive shaped particles have an average particle size of between 30 ⁇ and 75 ⁇ .
  • Item 95 is a method of any one of items 68 through 90, wherein the electrically conductive shaped particles have an average particle size of between 50 ⁇ and 75 ⁇ .
  • Item 96 is a method of any one of items 68 through 95, wherein each of the electrically conductive shaped particles includes a metal coating comprising aluminum, silver, copper, gold, or alloys thereof.
  • Item 97 is a method of any one of items 68 through 96, wherein each of the electrically conductive shaped particles includes a metal coating comprising silver or copper.
  • Item 98 is a method of any one of items 68 through 97, wherein the composite includes between 5 wt. % and 75 wt. % of the electrically conductive shaped particles.
  • Item 99 is a method of any one of items 68 through 98, wherein the composite includes between 5 wt. % and 25 wt. % of the electrically conductive shaped particles.
  • Item 100 is a method of any one of items 68 through 99, wherein the composite includes between 5 wt. % and 10 wt. % of the electrically conductive shaped particles.
  • Item 101 is a method of any one of items 68 through 98, wherein the composite includes between 10 wt. % and 50 wt. % of the electrically conductive shaped particles.
  • Item 102 is a method of any one of items 68 through 98, wherein the composite includes between 10 wt. % and 30 wt. % of the electrically conductive shaped particles.
  • Item 103 is a method of any one of items 68 through 98, wherein the composite includes between 25 wt. % and 75 wt. % of the electrically conductive shaped particles.
  • Item 104 is a method of any one of items 68 through 97, wherein the composite includes between 0.1 volume percent (vol. %) and 15 vol. % of the electrically conductive shaped particles.
  • Item 105 is a method of any one of items 68 through 97, wherein the composite includes between 0.5 vol. % and 25 vol. % of the electrically conductive shaped particles.
  • Item 106 is a method of any one of items 68 through 97, wherein the composite includes between 1 vol. % and 15 vol. % of the electrically conductive shaped particles.
  • Item 107 is a method of any one of items 68 through 97, wherein the composite includes between 1 vol. % and 10 vol. % of the electrically conductive shaped particles.
  • Item 108 is a method of any one of items 68 through 97, wherein the composite includes between 5 vol. % and 10 vol. % of the electrically conductive shaped particles.
  • Item 109 is a method of any one of items 68 through 108, wherein the composite includes a thickness between 5 ⁇ and 100 ⁇ .
  • Item 1 10 is a method of any one of items 68 through 109, wherein the composite includes a thickness between 5 ⁇ and 50 ⁇ .
  • Item 1 1 1 is a method of any one of items 68 through 1 10, wherein the composite includes a thickness between 5 ⁇ and 25 ⁇ .
  • Item 1 12 is a method of any one of items 68 through 1 10, wherein the composite includes a thickness between 10 ⁇ and 35 ⁇ .
  • Item 1 13 is a method of any one of items 68 through 109, wherein the composite includes a thickness between 50 ⁇ and ⁇ .
  • Item 1 14 is a method of any one of items 68 through 109, wherein the composite includes a thickness between 30 ⁇ and 100 ⁇ .
  • Item 1 15 is a method of any one of items 68 through 1 14, wherein the resin includes a thermoset polymer, a thermoplastic polymer, or an elastomeric polymer.
  • Item 1 16 is a method of any one of items 68 through 1 15, wherein the resin includes an epoxy, a polyurea, an acrylic, a cyanoacrylate, a polyamide, a phenolic, a polyimide, a silicone, a polyester, an aminoplast, a melamine, an acrylated epoxy, a urethane, polyvinyl chloride, or a combination thereof.
  • the resin includes an epoxy, a polyurea, an acrylic, a cyanoacrylate, a polyamide, a phenolic, a polyimide, a silicone, a polyester, an aminoplast, a melamine, an acrylated epoxy, a urethane, polyvinyl chloride, or a combination thereof.
  • Item 1 17 is a method of any one of items 68 through 1 14, wherein the resin includes a pressure-sensitive adhesive, a liquid adhesive, a hot melt adhesive, or a structural adhesive.
  • Item 1 18 is a method of any one of items 68 through 1 17, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 2: 1.
  • Item 1 19 is a method of any one of items 68 through 1 18, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 4: 1.
  • Item 120 is a method of any one of items 68 through 1 19, wherein the composite further includes a plurality of conductive fillers having an aspect ratio of length to height of greater than 10: 1.
  • Item 121 is a method of any one of items 1 18 through 120, wherein the plurality of conductive fillers includes fibers coated with metal.
  • Item 122 is a method of item 121, wherein the fibers include glass, polymer, carbon, or ceramic.
  • Item 123 is a method of any one of items 1 18 through 121, wherein the plurality of conductive fillers includes carbon black or graphene based materials.
  • Item 124 is a method of item 123, wherein the graphene based materials include doped or undoped graphene.
  • Item 125 is a method of item 123 or item 124, wherein the graphene based materials include flakes, exfoliated graphite, graphene nanoplatelets, functionalized graphene sheets, or a combination thereof.
  • Item 126 is a method of any one of items 68 through 125, further comprising a substrate, wherein the composite is attached to a major surface of the substrate.
  • Item 127 is a method of item 126, wherein the substrate includes a metal foil, a polymer, or a fabric.
  • Item 128 is a method of item 126 or item 127, wherein the substrate includes fabric.
  • Item 129 is a method of any one of items 68 through 128, wherein the composite exhibits a contact resistance of the z-axis of between 0.05 and 1.00 ohms as measured by the Z-Axis Resistance Test.
  • Item 130 is a method of any one of items 68 through 129, wherein the composite exhibits a contact resistance of the z-axis of between 0.05 and 0.60 ohms as measured by the Z-Axis Resistance Test.
  • Item 131 is a method of any one of items 68 through 130, wherein the intersection of the first surface and the second surface of at least 80% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 132 is a method of any one of items 68 through 131, wherein the intersection of the first surface and the second surface of at least 90% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 133 is a method of any one of items 68 through 132, wherein the intersection of the first surface and the second surface of at least 95% of the electrically conductive shaped particles is oriented in the resin normal to a major surface of the composite.
  • Item 134 is a method of any one of items 68 through 133, wherein at least 90% of the particles in the monosized distribution have a surface area that does not vary by more than 5% of the average surface area of all of the particles in the distribution.
  • Item 135 is a method of any one of items 68 through 134, wherein at least 90% of the particles in the monosized distribution have a surface area that does not vary by more than 3% of the average surface area of all of the particles in the distribution.
  • Item 136 is a method of any one of items 68 through 135, wherein at least 90% of the particles in the monosized distribution have a surface area that does not vary by more than 2% of the average surface area of all of the particles in the distribution.
  • Item 137 is a method of any one of items 68 through 136, wherein at least 90% of the particles in the monosized distribution have a surface area that does not vary by more than 1% of the average surface area of all of the particles in the distribution.
  • Item 138 is a method of any one of items 68 through 137, wherein the composite further includes a plurality of thermally conductive fillers, EMI absorbing fillers, or a combination thereof.
  • boehmite sol-gel was made using the following recipe: aluminum oxide monohydrate powder (1600 parts) having the trade designation "DISPERAL” (commercially available from Sasol North America, Inc.) was dispersed by high shear mixing a solution containing water (2400 parts) and 70 percent aqueous nitric acid (72 parts) for 5 minutes. The resulting sol-gel was aged for at least 1 hour before coating. A mold release agent, 1 percent peanut oil in methanol was used to coat the production tooling with about 0.5 milligram per square inch (mg/in 2 ) (3.2 milligram per square centimeter (mg/cm 2 )) of peanut oil applied to the production tooling.
  • DISPERAL trade designation
  • a mold release agent 1 percent peanut oil in methanol was used to coat the production tooling with about 0.5 milligram per square inch (mg/in 2 ) (3.2 milligram per square centimeter (mg/cm 2 )) of peanut oil applied to the production tooling.
  • the sol-gel was forced into production tooling having triangular shaped mold cavities of 8 mils (203.2 micrometers ( ⁇ )) depth and 27 mils (685.8 ⁇ ) on each side.
  • the draft angle a between the sidewall and bottom of the mold was 98 degrees.
  • the sol-gel was forced into the cavities with a putty knife so that the openings of the production tooling were completely filled.
  • Excess methanol was removed by placing sheets of the production tooling in an air convection oven for 5 minutes at 45 degrees Celsius.
  • the sol-gel coated production tooling was placed in an air convection oven at 45 degrees Celsius for at least 45 minutes to dry.
  • the precursor shaped abrasive particles were removed from the production tooling by passing it over an ultrasonic horn.
  • the precursor shaped abrasive particles were calcined at approximately 650 degrees Celsius and then saturated with a mixed nitrate solution of the following concentration (reported as oxides): 1.8 percent each of MgO, Y 2 O 3 , Nd 2 0 3 and La 2 0 3 .
  • the excess nitrate solution was removed and the saturated precursor shaped abrasive particles with openings were allowed to dry after which the particles were again calcined at 650 degrees Celsius and sintered at approximately 1400 degrees Celsius. Both the calcining and sintering was performed using rotary tube kilns.
  • 5-sided truncated pyramid shaped particles were produced using the same procedure described above except the production tooling was changed to a production tooling having right rhombic pyramidal shaped mold cavities of dimensions as shown in Table 1.
  • the surfaces of the mold cavities were manufactured to have a series grooves with triangular cross sections. The grooves were 6 micrometers deep and had a l lO degree tip angle dimension.
  • IPC Multi-Purpose test board (IPC-B-25A) (Diversified Systems, Inc, Indianapolis,
  • Ind. was used to measure the conductivity of the composite in the Z-axis direction.
  • the composite sample was laminated over a portion of a 2.7 millimeter (mm) wide, gold plated copper trace on a polyimide film. A portion of the gold plated copper trace was not covered by the composite.
  • the polyimide test strip was laminated over the 2.1 mm wide traces on the IPC- B-25 test board. This defined a 2.1 mm by 2.7 mm overlap junction between the gold plated copper strip with the composite test sample and the two mm wide trace on the IPC-B-25 circuit board.
  • Heat and pressure bonding, compression, or combinations thereof were available for non-adhesive composites.
  • the portion of the gold plated copper trace that was not covered with the composite was clamped into contact with one of the other traces on the IPC test board.
  • the resistance was measured by probing the IPC trace that was in contact with the composite and the IPC trace that was in contact with the gold plated trace on the polyimide film.
  • Samples were dwelled for 1 hour and for 24 hours at room temperature conditions (20- 23°C at 20-50% relative humidity) after the test configuration was set, prior to resistance testing.
  • the polyimide film and composite were applied to a Stainless Steel (SS) substrate with a section of the polyimide film away from the SS substrate.
  • the overlap of the film/composite onto the SS substrate was 10 mm.
  • the contact resistance was measured between the film and the SS substrate with resistance probes. Samples were dwelled for 1 hour and for 24 hours at room temperature conditions (20-23°C at 20-50% relative humidity) after the test configuration was set, prior to resistance testing.
  • the apparatus 1 10 includes a housing 1 12 defining a vacuum chamber 1 14 containing a particle agitator 116.
  • the housing 1 12 which may be made from an aluminum alloy if desired, is a vertically oriented hollow cylinder (45 centimeters (cm) high and 50 cm in diameter).
  • the base 1 18 contains a port 120 for a high vacuum gate valve 122 followed by a six-inch diffusion pump 124 as well as a support 126 for the particle agitator 1 16.
  • the chamber 1 14 is capable of being evacuated to background pressures in the range of 10 "6 torr.
  • the top of the housing 1 12 includes a demountable, rubber L-gasket sealed plate 128 that is fitted with an external mount three-inch diameter dc magnetron sputter deposition source 130 (a US Gun II, US, INC., San Jose, CA).
  • a metal sputter target 132 (5 inches x 8 inches and 0.5 inches thick) (12.7 cm x 20.32 cm and 1.27 cm thick).
  • the sputter source 130 is powered by an MDX-10 Magnetron Drive (Advanced Energy Industries, Inc, Fort Collins, CO) fitted with an arc suppressing Sparc-le 20 (Advanced Energy Industries, Inc, Fort Collins, CO).
  • the particle agitator 1 16 is a hollow cylinder (2.00 inches long x 2.25 inches diameter horizontal) (5.08 cm long x 5.715 cm diameter horizontal) with a rectangular opening 34 (1.25 inches x 1.75 inches) (3.175 inches x 4.445 inches) in the top 136.
  • the opening 134 is positioned 7 centimeters directly below the surface 136 of the sputter target 132 so that sputtered metal atoms can enter the agitator volume 138.
  • the agitator 116 is fitted with a shaft 140 aligned with its axis.
  • the shaft 140 has a rectangular cross section to which are bolted four rectangular blades 142 which form an agitation mechanism or paddle wheel for the support particles being tumbled.
  • the blades 142 each contain two holes 144 to promote communication between the particle volumes contained in each of the four quadrants formed by the blades 142 and agitator cylinder 1 16.
  • alumina shaped particles Forty cubic centimeters (cc) (125g) of alumina shaped particles were used as the substrate.
  • the particles were placed into the particle agitator apparatus 1 10, and the chamber 1 14 was then evacuated. Once the chamber pressure was in the 10 "5 torr range, the argon sputtering gas was admitted to the chamber 1 14 at a pressure of about 1 10 millitorr. Pure Ag metal was used as the sputter target 132.
  • the deposition process was then started by applying a cathodic power of 2.00 kilowatts.
  • the particle agitator shaft 140 was rotated at about 4 rpm during the Ag deposition process. The power was stopped after 6 hours.
  • the chamber 1 14 was backfilled with air and the Ag coated particles were removed from the apparatus 1 10.
  • Example 1 An electrically conductive adhesive transfer tape was prepared.
  • Example 1 shaped particles (see Figure 10) were obtained and made conductive by coating silver metal on the particles according to the Sputtering Method above.
  • a mixture of Acrylate syrup Ag coated shaped alumina particles was prepared according to the sample formulation in Table 3 below. The mixture was put in a small glass container and a tongue depressor was used to mix the shaped particles in the syrup by hand. Finally, the mixture was poured out into a 6 inch (15.24 cm) width silicone coated polyester terephthalate (PET) release liner ⁇ T50 (125 ⁇ thick) and T10 (50 ⁇ thick) ⁇ , with the two release sides facing each other and coated using a notch bar coater.
  • PET silicone coated polyester terephthalate
  • the coating was complete it was cured with UV radiation from the top side for 10 minutes, using a Sylvania bulb at a power of 2.0 - 2.2 mW/cm 2 , for a time of 10 minutes.
  • test coupons were cut out and tested using the Stainless Steel Resistance Test above and the Z-Axis Resistance Test above.
  • Table 3 lists the electrical data from Example 1.
  • the contact resistance (R) data from the standard SS (stainless steel test) and the Z axis test show that all of the values of R are less than 1 ⁇ .
  • Example 2 Electrically Conductive Adhesive Transfer Tape with 5-Sided Triangle Alumina Shaped Particles:
  • Example 2 An electrically conductive adhesive transfer tape was prepared.
  • Example 2 shaped particles (see Figure 9) were obtained and made conductive by coating silver metal on the particles according to the Sputtering Method above.
  • a mixture of Acrylate syrup Ag coated shaped alumina particles was prepared according to the sample formulation in Table 3 below. The mixture was put in a small glass container and a tongue depressor was used to mix the shaped particles in the syrup by hand. Finally, the mixture was poured out into a 6 inch (15.24 cm) width silicone coated polyester terephthalate (PET) release liner ⁇ T50 (125 ⁇ thick) and T10 (50 ⁇ thick) ⁇ , with the two release sides facing each other and coated using a notch bar coater.
  • PET silicone coated polyester terephthalate
  • the coating was complete it was cured with UV radiation from the top side for 10 minutes, using a Sylvania bulb at a power of 2.0 - 2.2 mW/cm 2 , for a time of 10 minutes.
  • test coupons were cut out and tested using the Stainless Steel Resistance Test above and the Z-Axis Resistance Test above.
  • Table 3 below lists the electrical data from Example 2.
  • the contact resistance (R) data from the standard SS (stainless steel test) and the Z axis test show that all of the values of R are less than 1 ohm ( ⁇ ), except for the Stainless Steel Test with a 24 hour dwell time.
  • Table 3 below lists the electrical data from Example 2.
  • the contact resistance (R) data from the standard SS (stainless steel test) and the Z axis test show that all of the values of R are less than 1 ohm ( ⁇ ), except for the Stainless Steel Test with a 24 hour dwell time. Table 3.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Non-Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)
PCT/US2014/064728 2013-11-15 2014-11-10 An electrically conductive article containing shaped particles and methods of making same Ceased WO2015073346A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201480061407.3A CN105706181B (zh) 2013-11-15 2014-11-10 包含成型颗粒的导电制品及其制造方法
JP2016530915A JP6591413B2 (ja) 2013-11-15 2014-11-10 成形粒子を含有する導電性物品及びその作製方法
EP14803303.8A EP3069353B1 (en) 2013-11-15 2014-11-10 An electrically conductive article containing shaped particles and methods of making same
US15/027,496 US10785900B2 (en) 2013-11-15 2014-11-10 Electrically conductive article containing shaped particles and methods of making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361904656P 2013-11-15 2013-11-15
US61/904,656 2013-11-15

Publications (1)

Publication Number Publication Date
WO2015073346A1 true WO2015073346A1 (en) 2015-05-21

Family

ID=51987485

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/064728 Ceased WO2015073346A1 (en) 2013-11-15 2014-11-10 An electrically conductive article containing shaped particles and methods of making same

Country Status (5)

Country Link
US (1) US10785900B2 (enExample)
EP (1) EP3069353B1 (enExample)
JP (1) JP6591413B2 (enExample)
CN (1) CN105706181B (enExample)
WO (1) WO2015073346A1 (enExample)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9200187B2 (en) 2012-05-23 2015-12-01 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US9238768B2 (en) 2012-01-10 2016-01-19 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US9242346B2 (en) 2012-03-30 2016-01-26 Saint-Gobain Abrasives, Inc. Abrasive products having fibrillated fibers
US9303196B2 (en) 2011-06-30 2016-04-05 Saint-Gobain Ceramics & Plastics, Inc. Liquid phase sintered silicon carbide abrasive particles
US9440332B2 (en) 2012-10-15 2016-09-13 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9457453B2 (en) 2013-03-29 2016-10-04 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Abrasive particles having particular shapes and methods of forming such particles
US9517546B2 (en) 2011-09-26 2016-12-13 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming
US9566689B2 (en) 2013-12-31 2017-02-14 Saint-Gobain Abrasives, Inc. Abrasive article including shaped abrasive particles
US9598620B2 (en) 2011-06-30 2017-03-21 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particles of silicon nitride
US9604346B2 (en) 2013-06-28 2017-03-28 Saint-Gobain Cermaics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9676982B2 (en) 2012-12-31 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Particulate materials and methods of forming same
US9676981B2 (en) 2014-12-24 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle fractions and method of forming same
US9676980B2 (en) 2012-01-10 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9707529B2 (en) 2014-12-23 2017-07-18 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US9765249B2 (en) 2011-12-30 2017-09-19 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US9771507B2 (en) 2014-01-31 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US9783718B2 (en) 2013-09-30 2017-10-10 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US9803119B2 (en) 2014-04-14 2017-10-31 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9902045B2 (en) 2014-05-30 2018-02-27 Saint-Gobain Abrasives, Inc. Method of using an abrasive article including shaped abrasive particles
US9914864B2 (en) 2014-12-23 2018-03-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US9938440B2 (en) 2015-03-31 2018-04-10 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Fixed abrasive articles and methods of forming same
US10106714B2 (en) 2012-06-29 2018-10-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
US10196551B2 (en) 2015-03-31 2019-02-05 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US10280350B2 (en) 2011-12-30 2019-05-07 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
WO2019122366A1 (en) 2017-12-22 2019-06-27 Eckart Gmbh Electrically conductive particles, composition, article and method of manufacturing electrically conductive particles
US10557067B2 (en) 2014-04-14 2020-02-11 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10563105B2 (en) 2017-01-31 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10711171B2 (en) 2015-06-11 2020-07-14 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10759024B2 (en) 2017-01-31 2020-09-01 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10865148B2 (en) 2017-06-21 2020-12-15 Saint-Gobain Ceramics & Plastics, Inc. Particulate materials and methods of forming same
US10964441B2 (en) 2016-12-21 2021-03-30 3M Innovative Properties Company Conductive particles, articles, and methods
CN113427841A (zh) * 2015-11-12 2021-09-24 塞特工业公司 作为复合材料中的夹层的混合面纱
US11230653B2 (en) 2016-09-29 2022-01-25 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11718774B2 (en) 2016-05-10 2023-08-08 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US11926019B2 (en) 2019-12-27 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US11959009B2 (en) 2016-05-10 2024-04-16 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US12129422B2 (en) 2019-12-27 2024-10-29 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US12338384B2 (en) 2019-12-27 2025-06-24 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US12384004B2 (en) 2021-12-30 2025-08-12 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same
US12496686B2 (en) 2021-12-30 2025-12-16 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same
US12508688B2 (en) 2022-12-29 2025-12-30 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11168235B2 (en) * 2017-05-09 2021-11-09 3M Innovative Properties Company Electrically conductive adhesive
CN109688782A (zh) * 2019-01-31 2019-04-26 常州斯威克新材料科技有限公司 一种无导电颗粒电磁屏蔽膜及其制备方法
KR102474337B1 (ko) * 2020-08-28 2022-12-07 주식회사 아이에스시 전기접속용 커넥터
JP2025501179A (ja) * 2021-12-28 2025-01-17 ソルベンタム インテレクチュアル プロパティズ カンパニー 金属コーティングジルコニア物品
KR102582710B1 (ko) * 2021-12-29 2023-09-26 주식회사 아이에스시 도전성 입자의 제조방법 및 도전성 입자
KR102792202B1 (ko) * 2023-06-01 2025-04-08 주식회사 아이에스시 도전성 입자 및 이를 포함하는 검사용 커넥터

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684678A (en) 1985-05-30 1987-08-04 Minnesota Mining And Manufacturing Company Epoxy resin curing agent, process, and composition
US4903440A (en) 1988-11-23 1990-02-27 Minnesota Mining And Manufacturing Company Abrasive product having binder comprising an aminoplast resin
US5236472A (en) 1991-02-22 1993-08-17 Minnesota Mining And Manufacturing Company Abrasive product having a binder comprising an aminoplast binder
US20070164260A1 (en) * 2003-09-26 2007-07-19 Hideji Kuwajima Mixed conductive power and use thereof
EP1947654A1 (en) * 2005-09-29 2008-07-23 Alpha Scientific, Corporation Conductive powder and process for producing the same, conductive powder paste, and process for producing the conductive powder paste
JP2008223058A (ja) * 2007-03-09 2008-09-25 Alpha Scientific Kk 混合導電粉及びその製造方法並びに導電ペースト及びその製造方法
US20100146867A1 (en) 2008-12-17 2010-06-17 Boden John T Shaped abrasive particles with grooves
US8034137B2 (en) 2007-12-27 2011-10-11 3M Innovative Properties Company Shaped, fractured abrasive particle, abrasive article using same and method of making
US8142891B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Dish-shaped abrasive particles with a recessed surface
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US20120227333A1 (en) 2009-12-02 2012-09-13 Adefris Negus B Dual tapered shaped abrasive particles

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475213A (en) 1965-09-13 1969-10-28 Minnesota Mining & Mfg Electrically conductive adhesive tape
US5443876A (en) 1993-12-30 1995-08-22 Minnesota Mining And Manufacturing Company Electrically conductive structured sheets
JP2004035686A (ja) 2002-07-02 2004-02-05 Bridgestone Corp 異方性導電フィルム
GB0427164D0 (en) * 2004-12-11 2005-01-12 Eastman Kodak Co Conductive silver dispersions and uses thereof
JP4319167B2 (ja) 2005-05-13 2009-08-26 タツタ システム・エレクトロニクス株式会社 シールドフィルム、シールドプリント配線板、シールドフレキシブルプリント配線板、シールドフィルムの製造方法及びシールドプリント配線板の製造方法
JP4924167B2 (ja) 2006-04-13 2012-04-25 日立化成工業株式会社 導電性ペースト、並びにこれを用いたプリプレグ、金属箔張積層板、及びプリント配線板
EP2044163B1 (en) * 2006-07-24 2012-04-25 3M Innovative Properties Company Electrically conductive pressure sensitive adhesives
GB0622060D0 (en) * 2006-11-06 2006-12-13 Hexcel Composites Ltd Improved composite materials
US8728354B2 (en) * 2006-11-20 2014-05-20 Sabic Innovative Plastics Ip B.V. Electrically conducting compositions
WO2009054386A1 (ja) * 2007-10-22 2009-04-30 Nippon Chemical Industrial Co., Ltd. 被覆導電性粉体およびそれを用いた導電性接着剤
JP2011150836A (ja) 2010-01-20 2011-08-04 Jsr Corp 回路接続部材、導電性粒子および導電性粒子の製造方法
KR20130099998A (ko) 2010-11-08 2013-09-06 나믹스 가부시끼가이샤 금속 입자 및 그 제조 방법
CN103231072B (zh) 2013-04-09 2015-06-03 昆明理工大学 高温电子浆料用二氧化硅/银核壳复合粉的制备方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684678A (en) 1985-05-30 1987-08-04 Minnesota Mining And Manufacturing Company Epoxy resin curing agent, process, and composition
US4903440A (en) 1988-11-23 1990-02-27 Minnesota Mining And Manufacturing Company Abrasive product having binder comprising an aminoplast resin
US5236472A (en) 1991-02-22 1993-08-17 Minnesota Mining And Manufacturing Company Abrasive product having a binder comprising an aminoplast binder
US20070164260A1 (en) * 2003-09-26 2007-07-19 Hideji Kuwajima Mixed conductive power and use thereof
EP1947654A1 (en) * 2005-09-29 2008-07-23 Alpha Scientific, Corporation Conductive powder and process for producing the same, conductive powder paste, and process for producing the conductive powder paste
JP2008223058A (ja) * 2007-03-09 2008-09-25 Alpha Scientific Kk 混合導電粉及びその製造方法並びに導電ペースト及びその製造方法
US8034137B2 (en) 2007-12-27 2011-10-11 3M Innovative Properties Company Shaped, fractured abrasive particle, abrasive article using same and method of making
US20100146867A1 (en) 2008-12-17 2010-06-17 Boden John T Shaped abrasive particles with grooves
US8142891B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Dish-shaped abrasive particles with a recessed surface
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US20120227333A1 (en) 2009-12-02 2012-09-13 Adefris Negus B Dual tapered shaped abrasive particles

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Encyclopedia of Polymer Science and Engineering", vol. 11, 1988, JOHN WILEY & SONS, INC., pages: 45 - 92
ALPHONSUS V. POCIUS: "Adhesion and Adhesives Technology: An Introduction", 1997, HANSER PUBLISHERS, pages: 185 - 188
GUNTER OERTEL: "Polyurethane Handbook", 1985, HANSER PUBLISHERS

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9303196B2 (en) 2011-06-30 2016-04-05 Saint-Gobain Ceramics & Plastics, Inc. Liquid phase sintered silicon carbide abrasive particles
US9598620B2 (en) 2011-06-30 2017-03-21 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particles of silicon nitride
US9517546B2 (en) 2011-09-26 2016-12-13 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming
US10280350B2 (en) 2011-12-30 2019-05-07 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US9765249B2 (en) 2011-12-30 2017-09-19 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US10428255B2 (en) 2011-12-30 2019-10-01 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US11453811B2 (en) 2011-12-30 2022-09-27 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US11649388B2 (en) 2012-01-10 2023-05-16 Saint-Gobain Cermaics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US9676980B2 (en) 2012-01-10 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
US10106715B2 (en) 2012-01-10 2018-10-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US9238768B2 (en) 2012-01-10 2016-01-19 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US11142673B2 (en) 2012-01-10 2021-10-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US9771506B2 (en) 2012-01-10 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US11859120B2 (en) 2012-01-10 2024-01-02 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having an elongated body comprising a twist along an axis of the body
US9567505B2 (en) 2012-01-10 2017-02-14 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US10364383B2 (en) 2012-01-10 2019-07-30 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US9242346B2 (en) 2012-03-30 2016-01-26 Saint-Gobain Abrasives, Inc. Abrasive products having fibrillated fibers
US9688893B2 (en) 2012-05-23 2017-06-27 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US9428681B2 (en) 2012-05-23 2016-08-30 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US9200187B2 (en) 2012-05-23 2015-12-01 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US10000676B2 (en) 2012-05-23 2018-06-19 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US12043784B2 (en) 2012-05-23 2024-07-23 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US10106714B2 (en) 2012-06-29 2018-10-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
US10286523B2 (en) 2012-10-15 2019-05-14 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11148254B2 (en) 2012-10-15 2021-10-19 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9440332B2 (en) 2012-10-15 2016-09-13 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11154964B2 (en) 2012-10-15 2021-10-26 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9676982B2 (en) 2012-12-31 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Particulate materials and methods of forming same
US10179391B2 (en) 2013-03-29 2019-01-15 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9457453B2 (en) 2013-03-29 2016-10-04 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Abrasive particles having particular shapes and methods of forming such particles
US11590632B2 (en) 2013-03-29 2023-02-28 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US12122017B2 (en) 2013-03-29 2024-10-22 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US10668598B2 (en) 2013-03-29 2020-06-02 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Abrasive particles having particular shapes and methods of forming such particles
US9604346B2 (en) 2013-06-28 2017-03-28 Saint-Gobain Cermaics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9783718B2 (en) 2013-09-30 2017-10-10 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US10563106B2 (en) 2013-09-30 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US12344791B2 (en) 2013-09-30 2025-07-01 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US12305108B2 (en) 2013-09-30 2025-05-20 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US9566689B2 (en) 2013-12-31 2017-02-14 Saint-Gobain Abrasives, Inc. Abrasive article including shaped abrasive particles
US11091678B2 (en) 2013-12-31 2021-08-17 Saint-Gobain Abrasives, Inc. Abrasive article including shaped abrasive particles
US12319863B2 (en) 2013-12-31 2025-06-03 Saint-Gobain Abrasives, Inc. Abrasive article including shaped abrasive particles
US10597568B2 (en) 2014-01-31 2020-03-24 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US11926781B2 (en) 2014-01-31 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US9771507B2 (en) 2014-01-31 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US11891559B2 (en) 2014-04-14 2024-02-06 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10557067B2 (en) 2014-04-14 2020-02-11 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US12122953B2 (en) 2014-04-14 2024-10-22 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9803119B2 (en) 2014-04-14 2017-10-31 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US9902045B2 (en) 2014-05-30 2018-02-27 Saint-Gobain Abrasives, Inc. Method of using an abrasive article including shaped abrasive particles
US10351745B2 (en) 2014-12-23 2019-07-16 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US9707529B2 (en) 2014-12-23 2017-07-18 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US9914864B2 (en) 2014-12-23 2018-03-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US12365822B2 (en) 2014-12-23 2025-07-22 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US11608459B2 (en) 2014-12-23 2023-03-21 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US11926780B2 (en) 2014-12-23 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US9676981B2 (en) 2014-12-24 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle fractions and method of forming same
US12264277B2 (en) 2015-03-31 2025-04-01 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US12084611B2 (en) 2015-03-31 2024-09-10 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11472989B2 (en) 2015-03-31 2022-10-18 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11643582B2 (en) 2015-03-31 2023-05-09 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US9938440B2 (en) 2015-03-31 2018-04-10 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Fixed abrasive articles and methods of forming same
US10358589B2 (en) 2015-03-31 2019-07-23 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US10196551B2 (en) 2015-03-31 2019-02-05 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US10711171B2 (en) 2015-06-11 2020-07-14 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11879087B2 (en) 2015-06-11 2024-01-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
CN113427841A (zh) * 2015-11-12 2021-09-24 塞特工业公司 作为复合材料中的夹层的混合面纱
CN113427841B (zh) * 2015-11-12 2023-07-11 塞特工业公司 作为复合材料中的夹层的混合面纱
US11959009B2 (en) 2016-05-10 2024-04-16 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US11718774B2 (en) 2016-05-10 2023-08-08 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US11230653B2 (en) 2016-09-29 2022-01-25 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US10964441B2 (en) 2016-12-21 2021-03-30 3M Innovative Properties Company Conductive particles, articles, and methods
US10563105B2 (en) 2017-01-31 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11932802B2 (en) 2017-01-31 2024-03-19 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles comprising a particular toothed body
US11427740B2 (en) 2017-01-31 2022-08-30 Saint-Gobain Ceramics & Plastics, Inc. Method of making shaped abrasive particles and articles comprising forming a flange from overfilling
US11549040B2 (en) 2017-01-31 2023-01-10 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles having a tooth portion on a surface
US10759024B2 (en) 2017-01-31 2020-09-01 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10865148B2 (en) 2017-06-21 2020-12-15 Saint-Gobain Ceramics & Plastics, Inc. Particulate materials and methods of forming same
US11072711B2 (en) 2017-12-22 2021-07-27 Eckart Gmbh Electrically conductive particles, composition, article and method of manufacturing electrically conductive particles
WO2019122366A1 (en) 2017-12-22 2019-06-27 Eckart Gmbh Electrically conductive particles, composition, article and method of manufacturing electrically conductive particles
US12129422B2 (en) 2019-12-27 2024-10-29 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US12338384B2 (en) 2019-12-27 2025-06-24 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US11926019B2 (en) 2019-12-27 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US12384004B2 (en) 2021-12-30 2025-08-12 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same
US12496686B2 (en) 2021-12-30 2025-12-16 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same
US12508688B2 (en) 2022-12-29 2025-12-30 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same
US12508689B2 (en) 2022-12-29 2025-12-30 Saint-Gobain Abrasives, Inc. Abrasive articles and methods of forming same

Also Published As

Publication number Publication date
EP3069353B1 (en) 2019-10-30
US20160249495A1 (en) 2016-08-25
CN105706181A (zh) 2016-06-22
JP2016541098A (ja) 2016-12-28
CN105706181B (zh) 2018-11-16
JP6591413B2 (ja) 2019-10-16
US10785900B2 (en) 2020-09-22
EP3069353A1 (en) 2016-09-21

Similar Documents

Publication Publication Date Title
US10785900B2 (en) Electrically conductive article containing shaped particles and methods of making same
KR101523332B1 (ko) 점착 시트, 전자파 쉴드 시트 및 전자 기기
KR101550083B1 (ko) 방열 시트 및 방열 장치
TWI470010B (zh) A heat-conductive sheet, a method for manufacturing the same, and a heat radiating device using a heat-conducting sheet
JP2009544815A (ja) 導電性感圧性接着剤
CN104284928B (zh) 三维导电粘合剂膜
JP6844066B2 (ja) 絶縁シート、積層体、及び基板
CN106299721A (zh) 一种超薄的柔性复合宽带微波吸收结构
CN109233684B (zh) 导电粘合剂
JP2019216156A (ja) 電磁波シールドシート、部品搭載基板、および電子機器
EP2257610A2 (en) Thermally enhanced electrically insulative adhesive paste
JPH0373265A (ja) 被研磨物保持用キャリヤ及びその製造方法
JP6679839B2 (ja) 粘着テープ及びその製造方法ならびに放熱フィルム
JP5821856B2 (ja) 多層樹脂シート及び樹脂シート積層体
CN111868921A (zh) 散热片、散热构件和半导体器件
JP4556936B2 (ja) 電極接続用接着剤
US20230055151A1 (en) Thermal interface layer
KR101653369B1 (ko) 열전도성 점착제 조성물 및 이로부터 제조된 열전도성 박막 점착시트
WO2021148911A1 (en) Magnetic film
JP2010189244A (ja) グラファイトブロック及びグラファイト配向熱伝導シート
CN106800905B (zh) 一种陶瓷基磨块粘结金属基体用环氧树脂粘结剂及其制备方法和应用
US20230049873A1 (en) Electrically conductive adhesive layer
JP6757787B2 (ja) 中空構造電子部品
JP2019216234A (ja) 電磁波シールドシート、部品搭載基板、および電子機器
WO2006114896A1 (ja) 断熱材用接着剤及びそれを用いた断熱材用炭素化積層体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14803303

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15027496

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2016530915

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2014803303

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014803303

Country of ref document: EP