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CN111204086A - Carbon fiber thermoplastic prepreg fabric with gradient structure - Google Patents

Carbon fiber thermoplastic prepreg fabric with gradient structure Download PDF

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Publication number
CN111204086A
CN111204086A CN202010160839.7A CN202010160839A CN111204086A CN 111204086 A CN111204086 A CN 111204086A CN 202010160839 A CN202010160839 A CN 202010160839A CN 111204086 A CN111204086 A CN 111204086A
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CN
China
Prior art keywords
thermoplastic
carbon fiber
melt
hot
adhesive film
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.)
Pending
Application number
CN202010160839.7A
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Chinese (zh)
Inventor
乔琨
朱波
曹伟伟
孙娜
张烨
袁晓敏
秦溶蔓
杜明远
王东哲
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.)
Shandong Guangyuan New Material Technology Co Ltd
Shandong University
Original Assignee
Shandong Guangyuan New Material Technology Co Ltd
Shandong University
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 Shandong Guangyuan New Material Technology Co Ltd, Shandong University filed Critical Shandong Guangyuan New Material Technology Co Ltd
Priority to CN202010160839.7A priority Critical patent/CN111204086A/en
Publication of CN111204086A publication Critical patent/CN111204086A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0292—Polyurethane fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength

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Abstract

The invention discloses a carbon fiber thermoplastic prepreg fabric with a gradient structure, which is characterized in that a first thermoplastic high-temperature hot-melt matrix adhesive film layer, a first thermoplastic low-temperature hot-melt permeable adhesive film layer, a first carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a one-way arranged carbon fiber fabric layer, a second carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a second thermoplastic low-temperature hot-melt permeable adhesive film layer and a second thermoplastic high-temperature hot-melt matrix adhesive film layer are sequentially arranged from one side to the other side. Based on the fiber mixing technology, the multilayer gradient structure configuration is adopted, and the hot melting mixing is used as a main production mode, so that the integral stability and the interface bonding force of the prepreg fabric can be effectively ensured.

Description

Carbon fiber thermoplastic prepreg fabric with gradient structure
Technical Field
The invention belongs to the technical field of carbon fiber thermoplastic prepreg fabrics, and particularly relates to a carbon fiber thermoplastic prepreg fabric with a gradient structure.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The carbon fiber thermoplastic prepreg fabric is an intermediate product for producing the thermoplastic carbon fiber composite material, the molding uniformity of the thermoplastic composite material can be better controlled by utilizing the product, and simultaneously, the prepreg fabric impregnated with the thermoplastic resin omits the impregnation and compounding procedures of the resin and the fiber, thereby improving the production efficiency of the composite material. The preparation of the prepreg mainly adopts various composite methods such as an emulsion impregnation method, a hot melt impregnation method, a fluidized bed impregnation method and the like at present, different prepreg fabric preparation methods have advantages, but the preparation methods also have respective problems, for example, the prepreg fabric prepared by adopting an injection hot melt process has complex equipment, high energy consumption and low production efficiency, and the problems of permeation and interface bonding between a thermoplastic resin matrix and fiber tows of the prepreg fabric become the key points for effectively exerting the overall stability and the mechanical property of the subsequent composite material structure.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a carbon fiber thermoplastic prepreg fabric with a gradient structure. Based on the fiber mixing technology, the multilayer gradient structure configuration is adopted, and the hot melting mixing is used as a main production mode, so that the integral stability and the interface bonding force of the prepreg fabric can be effectively ensured.
In order to solve the above technical problems, the technical scheme of the present disclosure is as follows:
the invention provides a carbon fiber thermoplastic prepreg fabric with a gradient structure, which is characterized in that a first thermoplastic high-temperature hot-melt matrix adhesive film layer, a first thermoplastic low-temperature hot-melt adhesive film layer, a first carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a one-way arranged carbon fiber fabric layer, a second carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a second thermoplastic low-temperature hot-melt adhesive film layer and a second thermoplastic high-temperature hot-melt matrix adhesive film layer are sequentially arranged from one side to the other side.
Compared with the prior art, the beneficial effects of one or more of the above embodiments of the invention are:
(1) the three-dimensional mixed woven fabric layer is formed by mixing and weaving carbon fibers and thermoplastic hot-melt fibers, and the thermoplastic hot-melt fibers are heated and melted during hot-press forming, so that the impregnation effect of resin on the carbon fibers can be effectively improved.
(2) The carbon fiber fabric layers arranged in one direction are positioned between the two mixed three-dimensional woven fabric layers to form a sandwich mixed structure, so that the interlayer overall mechanical property of the overall structure can be obviously improved, the interlayer overall mechanical property is not easy to delaminate, and meanwhile, the middle one-way fabric can improve the mechanical properties such as stretching, compression and the like in the layer; by adopting a multi-dimensional carbon fiber fabric structure, the overall mechanical strength and rigidity of the prepreg fabric can be flexibly adjusted and designed.
(3) The low-temperature hot-melt resin adhesive film layer arranged on the outer side of the mixed three-dimensional woven fabric layer is melted during hot pressing and can permeate into the inside of the internal multi-dimensional carbon fiber fabric, so that the infiltration and combination effect of the internal interface of the fabric is ensured. Arranging a thermoplastic high-temperature hot-melt matrix adhesive film on the outermost layer, performing melt infiltration in the process of finally forming a composite material by hot pressing the thermoplastic pre-impregnated fabric, and mutually doping the thermoplastic adhesive film and low-temperature permeable thermoplastic resin to form an integral matrix structure of the thermoplastic pre-impregnated fabric;
the low-melting-point adhesive film improves interlayer permeability, the high-melting-point adhesive film improves the overall mechanical property, and the high-melting-point adhesive film are matched with each other to comprehensively improve the melt permeability and the mechanical property of the overall prepreg fabric.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of a carbon fiber thermoplastic prepreg fabric of a gradient structure in an embodiment of the present invention.
The composite material comprises 1 a carbon fiber fabric layer which is arranged in a one-way orthogonal mode, 2 a three-dimensional woven fabric layer, 3 a sandwich mixed structure, 4 a thermoplastic low-temperature hot-melt permeable adhesive film layer and 5 a thermoplastic high-temperature hot-melt matrix adhesive film layer.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model provides a carbon fiber thermoplasticity preimpregnation fabric of gradient structure sets gradually first thermoplasticity high temperature hot melt matrix plastic film layer, first thermoplasticity low temperature hot melt infiltration plastic film layer, first carbon fiber and thermoplasticity hot melt fiber mixture three-dimensional woven fabric layer, the carbon fiber fabric layer of one-way arrangement, second carbon fiber and thermoplasticity hot melt fiber mixture three-dimensional woven fabric layer, second thermoplasticity low temperature hot melt infiltration plastic film layer and second thermoplasticity high temperature hot melt matrix plastic film layer by a lateral opposite side.
The three layers of the first carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, the one-way arranged carbon fiber fabric layer and the second carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer can be bonded through the adhesive film to realize slippage between adjacent layers.
The unidirectional carbon fiber fabric layer can improve the mechanical property of the whole surface of the prepreg fabric.
In some embodiments, the carbon fibers in the unidirectionally arranged carbon fiber fabric layer are selected from one or more of the following carbon fibers: t300, T700, T800, T1000, M40, M60, M40J, and M60J.
In some embodiments, the unidirectional fibers in the unidirectionally arranged carbon fiber fabric layer are arranged in an orthogonal arrangement, an oblique arrangement, a multi-axial arrangement, or a quasi-isotropic arrangement.
Further, the number of the unidirectionally arranged fibers in the unidirectionally arranged carbon fiber fabric layer is 1 to 10, and for example, the number of the unidirectionally arranged fibers may be 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
In some embodiments, the three-dimensional weaving manner of the first carbon fiber and thermoplastic hot melt fiber mixed three-dimensional woven fabric layer and the second carbon fiber and thermoplastic hot melt fiber mixed three-dimensional woven fabric layer is three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction or three-dimensional seven-direction.
Further, the carbon fiber is one or more selected from the following: t300, T700, T800, T1000, M40, M60, M40J, M60J.
Further, the hot melt fiber is selected from polyamide, polyether ketone, polyether ether ketone, polyurethane, polyethylene or polyolefin resin.
Furthermore, the mass ratio of the hot-melt fiber to the carbon fiber is 0.2-0.7: 1.
In some embodiments, the thermoplastic low temperature hot melt adhesive tie-coat layer is selected from polyethylene, polyolefin resin, polyurethane, or EVA.
Furthermore, the thickness of the thermoplastic low-temperature hot-melt permeable adhesive film layer is 0.1-0.9 mm.
In some embodiments, the thermoplastic high temperature hot melt base adhesive film layer is selected from PPS, PET, PEEK, PA, or PC.
Furthermore, the thickness of the thermoplastic high-temperature hot-melt matrix adhesive film layer is 0.1-0.9 mm.
Flexibly adjusting according to the designed permeation requirement, sticking the high-temperature hot-melt matrix adhesive film on the outermost part of the low-temperature hot-melt permeation adhesive film layer, performing melt permeation in the process of finally forming the composite material by hot pressing the thermoplastic prepreg fabric, and mutually doping the thermoplastic prepreg fabric with low-temperature permeable thermoplastic resin to form the integral matrix structure of the thermoplastic prepreg fabric.
Example 1
The carbon fiber thermoplastic prepreg fabric arrangement with the gradient structure provided by the invention can be implemented by adopting a three-layer structure as shown in figure 1: the most core part adopts a sandwich mixed structure 3 of a three-dimensional woven fabric layer 2 and carbon fiber fabric layers 1 which are arranged in a one-way orthogonal mode, wherein the carbon fiber fabric layer 1 which is arranged in the most center in the one-way orthogonal mode is a four-layer structure formed by arranging T300 carbon fibers and M60J carbon fibers in an orthogonal mode according to a 2:1 mixing ratio, polyolefin filament fibers and T1000 carbon fibers in a 1:6 mixing ratio are mixed on two sides of the carbon fiber fabric which is arranged in the one-way orthogonal mode, and a three-dimensional fabric structure is formed in a three-dimensional four-.
The thermoplastic low-temperature hot-melt permeable adhesive film layer 4 with the thickness of 0.1mm is prepared on two sides of the sandwich mixed structure 3 by adopting polyethylene resin, and the final hot-melt temperature is controlled between 100 ℃ and 150 ℃. Preparing a thermoplastic high-temperature hot-melt matrix adhesive film layer 5 of a PPS system with the thickness of 0.1mm on the outermost layer of the two sides of the thermoplastic low-temperature hot-melt permeable adhesive film layer 4, and finally controlling the hot-melt temperature to be between 180 ℃ and 220 ℃. The thermoplastic high-temperature hot-melt matrix adhesive film is pasted on the outermost part of the thermoplastic low-temperature hot-melt permeable adhesive film layer, and is subjected to melt permeation in the process of finally forming the composite material by hot pressing the thermoplastic pre-impregnated fabric, and the thermoplastic high-temperature hot-melt matrix adhesive film is mutually doped with the low-temperature permeable thermoplastic resin to form the integral matrix structure of the thermoplastic pre-impregnated fabric.
Example 2
The carbon fiber thermoplastic prepreg fabric arrangement with the gradient structure provided by the invention can be implemented by adopting a three-layer structure: the core part adopts a sandwich mixed structure of a three-dimensional woven fabric layer and a carbon fiber fabric layer which is arranged in a one-way orthogonal manner, wherein the center of the core part is a four-layer structure in which T800 carbon fibers and M40 carbon fibers are arranged in an oblique manner at 60 degrees in a mixed ratio of 1:2, polyolefin filament fibers and T1000 carbon fibers in a mixed ratio of 1:8 are mixed on two sides of the carbon fiber fabric which is arranged in a one-way orthogonal manner, and a three-dimensional fabric structure is formed in a three-dimensional seven-direction.
Preparing thermoplastic low-temperature hot-melt permeable adhesive film layers with the thickness of 0.5mm by adopting EVA resin at two sides of the sandwich mixed structure, and finally controlling the hot-melt temperature to be between 140 ℃ and 150 ℃. Preparing a high-temperature hot-melt matrix adhesive film layer of a PPS system with the thickness of 0.3mm on the outermost layer of the two sides of the low-temperature hot-melt permeable adhesive film layer, and finally controlling the hot-melt temperature to be between 210 and 290 ℃. The high-temperature hot-melt matrix adhesive film is pasted on the outermost part of the low-temperature hot-melt permeable adhesive film layer, and is subjected to melt permeation in the process of finally forming the composite material by hot pressing the thermoplastic pre-impregnated fabric, and the thermoplastic pre-impregnated fabric is mutually doped with the low-temperature permeable thermoplastic resin to form the integral matrix structure of the thermoplastic pre-impregnated fabric.
Example 3
The carbon fiber thermoplastic prepreg fabric arrangement with the gradient structure provided by the invention can be implemented by adopting a three-layer structure: the most core part adopts a sandwich mixed structure of a three-dimensional woven fabric layer and a carbon fiber fabric structure which is arranged in a one-way orthogonal mode, wherein the most center is 6 layers of structures which are arranged in a multi-axial mode and are formed by M40J carbon fibers and T300 carbon fibers in a 1:3 mixing ratio, and polyurethane filament fibers and T1000 carbon fibers in a 1:4 mixing ratio are mixed on two sides of the carbon fiber fabric which is arranged in the one-way orthogonal mode, so that the three-dimensional fabric structure is formed in a three-dimensional six-way mode.
The thermoplastic low-temperature hot-melt permeable adhesive film layer with the thickness of 0.25mm is prepared on two sides of the sandwich mixed structure by adopting polyethylene resin, and the final hot-melt temperature is controlled between 130 ℃ and 150 ℃. Preparing a high-temperature hot-melt matrix adhesive film layer of a PC system with the thickness of 0.2mm on the outermost layer of the two sides of the low-temperature hot-melt permeable adhesive film layer, and finally controlling the hot-melt temperature to be between 220 ℃ and 240 ℃. The high-temperature hot-melt matrix adhesive film is pasted on the outermost part of the low-temperature hot-melt permeable adhesive film layer, and is subjected to melt permeation in the process of finally forming the composite material by hot pressing the thermoplastic pre-impregnated fabric, and the thermoplastic pre-impregnated fabric is mutually doped with the low-temperature permeable thermoplastic resin to form the integral matrix structure of the thermoplastic pre-impregnated fabric.
Example 4
The carbon fiber thermoplastic prepreg fabric arrangement with the gradient structure provided by the invention can be implemented by adopting a three-layer structure: the most core part adopts a sandwich mixed structure of a three-dimensional woven fabric layer and a carbon fiber fabric structure which is arranged in a one-way orthogonal mode, wherein the most center is a four-layer structure which adopts 0/30/60/90 quasi-isotropy arrangement of T800 carbon fibers and M60J carbon fibers in a 3:1 mixing ratio, polyether-ether-ketone filament fibers and T700 carbon fibers in a 1:5 mixing ratio are mixed on two sides of the carbon fiber fabric which is arranged in a one-way orthogonal mode, and the three-dimensional fabric structure is formed in a three-dimensional five-way mode.
Preparing thermoplastic low-temperature hot-melt permeable adhesive film layers with the thickness of 0.1mm by adopting EVA resin at two sides of the sandwich mixed structure, and finally controlling the hot-melt temperature to be between 130 ℃ and 150 ℃. Preparing a high-temperature hot-melt matrix adhesive film layer of a PA system with the thickness of 0.7mm on the outermost layer of the two sides of the low-temperature hot-melt permeable adhesive film layer, and finally controlling the hot-melt temperature to be between 230 ℃ and 250 ℃. The high-temperature hot-melt matrix adhesive film is pasted on the outermost part of the low-temperature hot-melt permeable adhesive film layer, and is subjected to melt permeation in the process of finally forming the composite material by hot pressing the thermoplastic pre-impregnated fabric, and the thermoplastic pre-impregnated fabric is mutually doped with the low-temperature permeable thermoplastic resin to form the integral matrix structure of the thermoplastic pre-impregnated fabric.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A carbon fiber thermoplastic prepreg fabric with a gradient structure is characterized in that: the three-dimensional woven fabric layer is characterized in that a first thermoplastic high-temperature hot-melt matrix adhesive film layer, a first thermoplastic low-temperature hot-melt permeable adhesive film layer, a first carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a one-way arranged carbon fiber fabric layer, a second carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional woven fabric layer, a second thermoplastic low-temperature hot-melt permeable adhesive film layer and a second thermoplastic high-temperature hot-melt matrix adhesive film layer are sequentially arranged from one side to the other side.
2. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 1, characterized in that: the carbon fibers in the carbon fiber fabric layer arranged unidirectionally are selected from one or more of the following carbon fibers: t300, T700, T800, T1000, M40, M60, M40J, and M60J.
3. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 1, characterized in that: the unidirectional fibers in the unidirectional carbon fiber fabric layer are arranged in an orthogonal, oblique, multi-axial or quasi-isotropic manner.
4. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 3, characterized in that: the number of the unidirectionally arranged fibers in the unidirectionally arranged carbon fiber fabric layer is 1-10.
5. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 1, characterized in that: the three-dimensional weaving mode of the first carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional weaving fabric layer and the second carbon fiber and thermoplastic hot-melt fiber mixed three-dimensional weaving fabric layer is three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction or three-dimensional seven-direction;
further, the carbon fiber is one or more selected from the following: t300, T700, T800, T1000, M40, M60, M40J, M60J;
further, the hot melt fiber is selected from polyamide, polyether ketone, polyether ether ketone, polyurethane, polyethylene or polyolefin resin.
6. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 5, characterized in that: the mass ratio of the hot melt fiber to the carbon fiber is 0.2-0.7: 1.
7. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 1, characterized in that: the thermoplastic low-temperature hot-melt permeable adhesive film layer is made of polyethylene, polyolefin resin, polyurethane or EVA.
8. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 7, characterized in that: the thickness of the thermoplastic low-temperature hot-melt permeable adhesive film layer is 0.1-0.9 mm.
9. The gradient-structured carbon fiber thermoplastic prepreg fabric according to claim 1, characterized in that: the thermoplastic high-temperature hot-melt matrix adhesive film layer is made of PPS, PET, PEEK, PA or PC.
10. The gradient structured carbon fiber thermoplastic prepreg fabric according to claim 9, characterized in that: the thickness of the thermoplastic high-temperature hot-melt matrix adhesive film layer is 0.1-0.9 mm.
CN202010160839.7A 2020-03-10 2020-03-10 Carbon fiber thermoplastic prepreg fabric with gradient structure Pending CN111204086A (en)

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