CN117484919A - Method for molding composite material based on photo-curing resin - Google Patents
Method for molding composite material based on photo-curing resin Download PDFInfo
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- CN117484919A CN117484919A CN202311762615.3A CN202311762615A CN117484919A CN 117484919 A CN117484919 A CN 117484919A CN 202311762615 A CN202311762615 A CN 202311762615A CN 117484919 A CN117484919 A CN 117484919A
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- 239000011347 resin Substances 0.000 title claims abstract description 89
- 229920005989 resin Polymers 0.000 title claims abstract description 89
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000000465 moulding Methods 0.000 title claims abstract description 17
- 238000000016 photochemical curing Methods 0.000 title abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 124
- 230000002787 reinforcement Effects 0.000 claims abstract description 81
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000004132 cross linking Methods 0.000 claims abstract description 4
- 230000001939 inductive effect Effects 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000013307 optical fiber Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000004753 textile Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000004381 surface treatment Methods 0.000 claims description 7
- 239000000805 composite resin Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 238000005475 siliconizing Methods 0.000 claims description 3
- 238000009718 spray deposition Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 238000001723 curing Methods 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- 239000012466 permeate Substances 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009787 hand lay-up Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 238000009745 resin transfer moulding Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- 238000009755 vacuum infusion Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000009734 composite fabrication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The embodiment of the application provides a composite material forming method based on photo-curing resin, which comprises the following steps: a reinforcement to be treated is produced by the target fiber or an aggregate thereof; combining the reinforcement to be treated with the light-cured resin in a manner including but not limited to infiltration, smearing, spraying and the like to obtain the wetted reinforcement to be cured, loading a light source with a specific wavelength on the end face of the target fiber, conducting the light source to the whole reinforcement through the target fiber, radiating the light-cured resin around the reinforcement, and inducing the light-cured resin to perform polymerization, crosslinking or grafting and other reactions to cure the reinforcement to obtain the target composite material. According to the technical scheme, heating and curing are not needed, the optimization flow of the related process is reduced, and the test development period is shortened; the air bubbles caused by heating of volatile matters are avoided, and the defects in the composite material are reduced; large heating equipment is not needed, the energy consumption is lower during molding, and the period is shorter; the photo-curing resin has the characteristic of high fluidity, can more easily permeate and infiltrate fiber gaps and fiber layers of the reinforcement to be treated, achieves the effect of fully infiltrating the reinforcement to be treated, and reduces defects in the composite material.
Description
Technical Field
The embodiment of the application relates to the technical field of composite material molding, in particular to a method for molding a composite material based on photo-curing resin.
Background
The composite material is a material formed by combining two or more different types of materials, and better performance and characteristics can be obtained by combining the different materials together, so that specific requirements are met.
Photo-curable resins are a special type of resin. Can be converted from a fluid to a solid under irradiation of a light source of a certain wavelength.
The conventional composite material molding method adopts a heating and pressurizing mode to solidify matrix resin, three technological parameters of temperature, pressure and time are required to be precisely matched, so that the fluidity and the liquid pressure of the resin are in a proper range, and various pore prevention measures are adopted to ensure that the composite material reaches the preset volume content and the porosity. However, it is difficult to obtain proper curing process parameters in the actual production process, and defects such as voids, dry yarns and the like often occur; meanwhile, the conventional composite material forming method needs to input large heating and pressurizing equipment, and has high cost and high energy consumption.
It should be noted that the foregoing is not necessarily prior art, and is not intended to limit the scope of the patent protection of the present application.
Disclosure of Invention
Embodiments of the present application provide a method for molding a composite material based on a photocurable resin to solve or alleviate one or more of the technical problems set forth above.
One aspect of an embodiment of the present application provides a method of molding a photocurable resin-based composite material, the method comprising:
reinforcing body to be treated is manufactured through target fibers or aggregate thereof;
combining the reinforcement to be treated with light-cured resin to obtain the immersed reinforcement to be treated; and curing the soaked reinforcement to be treated to obtain the target composite material.
Optionally, the target fiber is any one of the following: the light guide fiber, the light guide fiber and the functional fiber are mixed, wherein the mixed structure comprises the light guide fiber and other functional fibers, the light guide fiber is used for light guide solidification, and the other fibers are used for providing functionality such as mechanical properties.
Optionally, the optical fiber includes, but is not limited to, any one or more of the following combinations: glass fiber capable of guiding light, silicon fiber capable of guiding light, plastic fiber capable of guiding light, and silicon nitride fiber capable of guiding light.
Optionally, the bonding the reinforcement to be treated with the photocurable resin comprises:
the bonding means include, but are not limited to, dipping, painting, spraying, hand lay-up process, spray forming process, vacuum introducing process, resin transfer forming process, and the like.
Optionally, the reinforcement to be treated is made of a target fiber or an aggregate thereof, including:
making the target fiber or the aggregate thereof into a reinforcing body to be treated through a reinforcing body preparation process; wherein the reinforcement to be treated is a two-dimensional or three-dimensional textile structure reinforcement, and the fiber preparation process is any one or more of the following combinations: woven, knitted, braided, non-woven.
Optionally, the cured and infiltrated reinforcement to be treated to obtain a target composite material includes:
and loading a light source with specific wavelength on the end face of the target fiber, transmitting the light source to the whole reinforcement through the target fiber, radiating the light-cured resin around the reinforcement, and inducing the light-cured resin to perform polymerization, crosslinking or grafting and other reactions so as to obtain the target composite material.
Optionally, the photocurable resin is any one of the following:
ultraviolet curable resins, near infrared curable resins, and deep ultraviolet curable resins.
Optionally, the light guide fiber is a light guide fiber after a surface treatment operation, and the surface treatment operation is any one of the following steps: plasma treatment and siliconizing treatment.
The technical scheme adopted by the embodiment of the application can comprise the following advantages:
according to the technical scheme, heating and curing are not needed, the optimization flow of the related process is reduced, and the test development period is shortened; the air bubbles caused by heating of volatile matters are avoided, and the defects in the composite material are reduced; large heating equipment is not needed, the energy consumption is lower during molding, and the period is shorter; the photo-curing resin has the characteristic of high fluidity, can more easily permeate and infiltrate fiber gaps and fiber layers of the reinforcement to be treated, achieves the effect of fully infiltrating the reinforcement to be treated, and reduces defects in the composite material.
Drawings
The accompanying drawings illustrate exemplary embodiments and, together with the description, serve to explain exemplary implementations of the embodiments. The illustrated embodiments are for exemplary purposes only and do not limit the scope of the claims. Throughout the drawings, identical reference numerals designate similar, but not necessarily identical, elements.
FIG. 1 schematically illustrates a flow chart of a method of molding a photocurable resin-based composite material in accordance with an embodiment of the present application;
fig. 2 schematically shows a schematic view of a composite material according to an embodiment one of the present application as it is cured.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that the descriptions of "first," "second," etc. in the embodiments of the present application are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
In the description of the present application, it should be understood that the numerical references before the steps do not identify the order of performing the steps, but are only used for convenience in describing the present application and distinguishing each step, and thus should not be construed as limiting the present application.
First, a term explanation is provided in relation to the present application:
composite material: materials composed of two or more different kinds of materials can achieve better performance and characteristics by combining these different materials together, thereby meeting specific requirements. The composite material may be composed of a reinforcing material (e.g., fibers) and a matrix material (e.g., resin).
Weaving: the fibers or wires are interlaced together in a specific manner to create a fabric having a certain structure and properties.
Optical Fiber): a flexible material with light guiding capabilities can transmit light signals from one place to another.
A fabric composite: a special type of composite material uses fabric as reinforcing material, and a three-dimensional structure formed by interweaving fibers in different directions is combined with a resin matrix to produce a composite material product with specific properties and structure.
Photo-curing resin: a special resin is cured by light irradiation.
Dry yarn: the fibers are insufficiently impregnated with resin during the manufacturing process, resulting in the case where the surfaces of the fibers are not covered with resin.
Next, in order to facilitate understanding of the technical solutions provided in the embodiments of the present application by those skilled in the art, the following description is made on related technologies:
the conventional composite material forming method known by the inventor adopts a heating and pressurizing mode to solidify matrix resin, three process parameters of precisely matching temperature, pressure and time are required to ensure that the fluidity and the liquid pressure of the resin are in proper ranges, and various pore precautions are taken to ensure that the composite material reaches the preset volume content and the porosity. However, it is difficult to obtain proper curing process parameters in the actual production process, and defects such as voids, dry yarns and the like often occur; meanwhile, the conventional composite material forming method needs to input large heating and pressurizing equipment, and has high cost and high energy consumption.
Therefore, the embodiment of the application provides a technical scheme for molding the composite material. In the technical scheme, the photo-curing resin is adopted, heating curing is not needed, the process of optimizing related processes is reduced, and the test development period is shortened; the air bubbles caused by heating of volatile matters are avoided, and the defects in the composite material are reduced; large heating equipment is not needed, the energy consumption is lower during molding, and the period is shorter; the photo-curing resin has the characteristic of high fluidity, can more easily permeate and infiltrate fiber gaps and fiber layers of the reinforcement to be treated, achieves the effect of fully infiltrating the reinforcement to be treated, and reduces defects in the composite material. See in particular below.
Example 1
Fig. 1 schematically shows a flow chart of a method of molding a photocurable resin-based composite material according to an embodiment of the present application.
As shown in fig. 1, the method for forming the composite material may include steps S100 to 104, wherein:
step S100, preparing the reinforcement to be treated through the target fiber or the aggregate thereof.
And step S102, combining the reinforcement to be treated with the light-cured resin to obtain the soaked reinforcement to be treated.
And step S104, curing the soaked reinforcement to be treated to obtain the target composite material.
The light-cured resin has the characteristic of high fluidity, and can effectively fill gaps in the reinforcement to be treated and wrap the outer surface of the reinforcement to be treated through the high fluidity of the light-cured resin, so that the conditions of gaps and non-infiltration are reduced, and the bonding strength of the target fiber and the light-cured resin is improved. The photocurable resin can be rapidly transformed from a liquid or semi-solid state to a solid state after being irradiated with ultraviolet light or light of other specific wavelength.
Immersing the reinforcement to be treated in the light-cured resin, so that the reinforcement to be treated is fully contacted with the light-cured resin, and the situation that the target fiber is not wrapped or soaked by the light-cured resin is reduced, namely the situation that dry yarns are generated is reduced.
The target composite material consists of target fibers and light-cured resin, wherein the light-cured resin permeates into fiber gaps of the reinforcement to be treated to wrap the reinforcement.
According to the method for forming the composite material, the reinforcement to be treated is manufactured through the target fibers, the reinforcement to be treated is immersed into the photo-curing resin, and then the immersed reinforcement to be treated is cured, so that the required target composite material is obtained. The photocuring resin is adopted, heating curing is not needed, one technological parameter in the conventional composite material forming process is reduced, and time and cost for iterative optimization of the technological parameter are reduced; the volatile matters in the resin can not form bubbles due to temperature, so that the defects in the composite material are reduced; large heating equipment is not needed, and the energy consumption is lower during molding; the light-cured resin has the characteristic of high fluidity, can more easily permeate and infiltrate fiber gaps and fiber layers of the reinforcement to be treated, achieves the effect of fully infiltrating the reinforcement to be treated, and reduces defects in the composite material.
In an alternative embodiment, the target fiber is any one of the following: the light guide fiber, the light guide fiber and the functional fiber are mixed, wherein the mixed structure comprises the light guide fiber and other functional fibers, the light guide fiber is used for light guide solidification, and the other fibers are used for providing functionality such as mechanical properties.
The target fiber may be a specific fiber such as a light guide fiber, a hybrid structure in which a light guide fiber and a functional fiber are mixed. The light guide fiber can transmit light signals, and light can be transmitted through the light guide fiber, so that the reinforcement to be treated is solidified. The optical fibers are interwoven together in a specific manner, such as uniformly distributing the optical fibers at a distance, to create a reinforcement to be treated having a structure and properties. The shape of the reinforcement to be treated can be selected according to the actual situation.
When the target fiber is a mixed structure of the light guide fiber and the functional fiber, the light guide fiber in the mixed structure is used for light guide solidification, and other fibers in the mixed structure are used for providing functionality, such as mechanical property. The other fibers in the hybrid structure may be carbon fibers, metal fibers, polymer fibers, and the like. Illustratively: (1) When the other fibers are carbon fibers, the carbon fibers can be used to enhance the mechanical properties of the composite material, so that the composite material made of the carbon fibers can bear larger loads. (2) When the other fibers are polymeric fibers, such as polyamide fibers, polyester fibers, and the like, the polymeric fibers may be used in the composite to provide specific properties, such as flexibility, corrosion resistance, and the like. (3) When the other fibers are metal fibers, the metal fibers may be used to provide electrical conductivity, thermal conductivity, etc. characteristics in the composite material. It should be noted that other fibers in the hybrid structure may be selected according to practical situations, and are not limited herein.
In the alternative embodiments described above, the target fiber may be either a pure optical fiber or a hybrid structure of optical fibers and other fibers. By adding other fibers into the optical fiber, the prepared composite material has other properties, such as mechanical properties, so as to meet different performance requirements of the composite material. On the basis of realizing light guide solidification through the light guide fiber, the composite material is provided with other functions, so that the target composite material with different types and different performances is obtained.
In alternative embodiments, the optical fiber includes, but is not limited to, any one or more of the following combinations: glass fiber capable of guiding light, silicon fiber capable of guiding light, plastic fiber capable of guiding light, and silicon nitride fiber capable of guiding light.
By adopting the glass fiber capable of guiding light as the light guiding fiber, the light emitted by the light source can be effectively irradiated onto the light curing resin through the glass fiber, so that the light curing resin is cured. In the alternative embodiments described above, by using glass fibers that are light-conductive, the following advantages are achieved: (1) the optical loss is low: the glass fiber capable of guiding light has lower light loss, and light emitted by the light source has smaller attenuation of light signals in the transmission process, so that higher light signal quality is maintained, and the efficiency is higher when the light-cured resin is cured. (2) better optical transparency: the glass fiber capable of guiding light has good optical transparency, and the light emitted by the light source can pass through the glass fiber without being obviously blocked, scattered or absorbed in the transmission process, so that the optical signal is effectively transmitted.
The reinforcement to be treated is made of the light-conductive fiber, and the light-conductive fiber can be light-conductive and cured, namely, the light-conductive fiber can transmit light and can cure the light-curable resin filled and covered on the reinforcement to be treated through scattered light, so that the effect of curing the composite material is achieved.
In an alternative embodiment, the step S100 includes: making target fiber or aggregate thereof into a reinforcement to be treated through a reinforcement fiber preparation process; wherein the reinforcement to be treated is a two-dimensional or three-dimensional textile structure reinforcement, and the fiber preparation process is any one or more of the following combinations: woven, knitted, braided, non-woven.
When preparing the reinforcement to be treated, the two-dimensional textile structure reinforcement and the three-dimensional textile structure reinforcement can be formed by different types of fiber arrangements. Wherein a two-dimensional textile structural reinforcement refers to a structure in which fibers are woven, knitted or arranged in a certain manner in a plane. A planar simple structure or a slightly curved composite material is produced by a two-dimensional textile structural reinforcement. In two-dimensional textile structural reinforcements, the fibers are typically staggered in both the horizontal and vertical directions to form a network. The three-dimensional textile structural reinforcement refers to a structure in which fibers are woven, knitted or arranged in a more complex manner in three-dimensional space. Composite materials with complex curvature and three-dimensional shape, such as those required for aircraft fuselages, automobile bodies, and the like, can be prepared by the three-dimensional textile structural reinforcement.
In the above alternative embodiments, the arrangement and distribution of the target fibers and their aggregates can be controlled by the fiber preparation process to make the target fibers into the reinforcement to be treated in a specific shape and structure.
In an alternative embodiment, as shown in fig. 2, the step S104 includes: and loading a light source with specific wavelength on the end face of the target fiber, transmitting the light source to the whole reinforcement through the target fiber, radiating the light-cured resin around the reinforcement, and inducing the light-cured resin to perform polymerization, crosslinking or grafting and other reactions so as to obtain the target composite material. In some embodiments, the optical guide fiber in the target fiber may be connected to a light source. And (3) irradiating the lower surface with light emitted by the light guide fiber through the light source, and solidifying the resin layer on the surface of the fiber to solidify the immersed reinforcement to be treated.
In an alternative embodiment, the photocurable resin is any one of the following: ultraviolet curable resins, near infrared curable resins, and deep ultraviolet curable resins.
The type of the light source corresponds to the type of the photo-curable resin. For example, in the case where the photocurable resin is an ultraviolet curable resin, the light source is an ultraviolet light source. In the case where the photo-curable resin is a near infrared curable resin, the light source is a near infrared light source. In the case where the photocurable resin is a visible deep ultraviolet curable resin, the light source is a deep ultraviolet light source. The types of the light source and the photo-curable resin may be selected according to practical situations, and are not limited herein.
In some embodiments, if the reinforcement to be treated is a planar simple structure, a single light source may be provided to cure the photocurable resin. If the reinforcement to be processed is of a three-dimensional complex structure, a plurality of light sources can be arranged at different positions so as to make up for the defects caused by energy attenuation of the light sources.
In the above alternative embodiment, the optical fiber is connected to the light curing light source, and the optical fiber can emit light through the surface under the irradiation of the light curing light source, so as to cure the resin layer on the fiber surface, so as to cure the reinforcement to be treated after being infiltrated, and obtain the target composite material. It can be seen that the reinforcement to be treated after infiltration can be rapidly and accurately cured through the light guide fiber, and the curing efficiency is improved.
In some embodiments, the photocurable resin is contained in a photocurable resin containment device that is any one of: and (3) a light-cured resin groove and a light-cured resin composite material forming die.
In alternative embodiments, the reinforcement to be treated is combined with the photocurable resin in a manner including, but not limited to, dipping, painting, hand lay-up, spray forming, vacuum infusion, resin transfer forming, and the like.
The photocurable resin composite molding die may include a variety of different forms of dies, such as an open die, a half die (hard die on one side and soft die on the other side), a closed die. In some embodiments, the photocurable resin mold may be selected for different properties depending on the dimensional accuracy of the target composite. In the case of high dimensional accuracy requirements, i.e. in the production of complex three-dimensional components, such as aircraft fuselage parts, etc., closed moulds can be used. In case of low dimensional accuracy requirements, mold halves may be used. Open molds can be used to produce larger and relatively simple products such as flat sheet materials, simple planar members, and the like.
The realization process of impregnating the reinforcement to be treated by the vacuum introduction process can be as follows: the reinforcement to be treated is placed in advance in a mould. Then, a transparent film is placed over the fiber reinforcement, and air under the film is pumped by a vacuum pump to form a negative pressure. Next, a photocurable resin is injected into the mold through a predetermined inlet to effect infiltration. The vacuum infusion process can be used for larger composite fabrication.
The resin transfer molding process (RTM process, resin Transfer Molding) is a semi-closed mold infiltration process that can be used to produce larger batches of composite parts. The implementation process of impregnating the reinforcement to be treated by the RTM technology can be as follows: the reinforcement to be treated is placed in the mould and the mould is then closed. The resin is injected into the mould from a predetermined inlet, and the photo-curing resin is forced to infiltrate the reinforcement to be treated by means of pressure, vacuum and the like, so as to form the composite material.
In the above alternative embodiment, the reinforcement to be treated and the photocurable resin may be effectively combined (e.g., infiltrated, smeared, etc.) in the above-described combination manner, so that the reinforcement to be treated after being infiltrated is effectively obtained.
In an alternative embodiment, the light guiding fiber is a light guiding fiber after a surface treatment operation, wherein the surface treatment operation is any one of the following steps: plasma treatment and siliconizing treatment.
In the above-mentioned alternative embodiment, the optical fiber is treated by a surface treatment method, so that the light transmittance and wettability of the optical fiber can be enhanced, and the efficiency and quality of optical signal transmission in the optical fiber are improved, and the molding efficiency of the composite material is further improved.
It should be noted that the foregoing is only a preferred embodiment of the present application, and is not intended to limit the scope of the patent protection of the present application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or direct or indirect application to other related technical fields are included in the scope of the patent protection of the present application.
Claims (8)
1. A method of molding a photocurable resin-based composite material, the method comprising:
reinforcing body to be treated is manufactured through target fibers or aggregate thereof; combining the reinforcement to be treated with light-cured resin to obtain the immersed reinforcement to be treated; and curing the soaked reinforcement to be treated to obtain the target composite material.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the target fiber is any one of the following: the light guide fiber, the light guide fiber and the functional fiber are mixed, wherein the mixed structure comprises the light guide fiber and other functional fibers, the light guide fiber is used for light guide solidification, and the other fibers are used for providing functionality such as mechanical properties.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the optical fiber includes, but is not limited to, any one or more of the following combinations: glass fiber capable of guiding light, silicon fiber capable of guiding light, plastic fiber capable of guiding light, and silicon nitride fiber capable of guiding light.
4. The method according to claim 1, wherein the reinforcement to be treated by the target fiber or aggregate thereof comprises:
making the target fiber or the aggregate thereof into a reinforcing body to be treated through a reinforcing body preparation process; wherein the reinforcement to be treated is a two-dimensional or three-dimensional textile structure reinforcement, and the fiber preparation process is any one or more of the following combinations: woven, knitted, braided, non-woven.
5. The method according to claim 1, wherein the curing the infiltrated reinforcement to be treated to obtain the target composite material comprises:
and loading a light source with specific wavelength on the end face of the target fiber, transmitting the light source to the whole reinforcement through the target fiber, radiating the light-cured resin around the reinforcement, and inducing the light-cured resin to perform polymerization, crosslinking or grafting and other reactions so as to obtain the target composite material.
6. The method of claim 1, wherein the photocurable resin is any one of the following:
ultraviolet curable resins, near infrared curable resins, and deep ultraviolet curable resins.
7. The method according to claim 1, wherein the means for combining the reinforcement to be treated with the photocurable resin comprises:
impregnating, smearing, spraying, hand pasting, spray forming, vacuum introducing, resin transferring and forming and the like.
8. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the light guide fiber is the light guide fiber after surface treatment operation, and the surface treatment operation is any one of the following steps: plasma treatment and siliconizing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311762615.3A CN117484919A (en) | 2023-12-19 | 2023-12-19 | Method for molding composite material based on photo-curing resin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311762615.3A CN117484919A (en) | 2023-12-19 | 2023-12-19 | Method for molding composite material based on photo-curing resin |
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| CN202311762615.3A Pending CN117484919A (en) | 2023-12-19 | 2023-12-19 | Method for molding composite material based on photo-curing resin |
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