CN109159517B - Composite process thin layer and preparation method thereof - Google Patents

Composite process thin layer and preparation method thereof Download PDF

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Publication number
CN109159517B
CN109159517B CN201810816165.4A CN201810816165A CN109159517B CN 109159517 B CN109159517 B CN 109159517B CN 201810816165 A CN201810816165 A CN 201810816165A CN 109159517 B CN109159517 B CN 109159517B
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composite
resin
boundary
textile material
gradient
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CN201810816165.4A
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CN109159517A (en
Inventor
刘立朋
叶宏军
陈蔚
崔海超
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AVIC BASIC TECHNOLOGY RESEARCH INSTITUTE
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AVIC BASIC TECHNOLOGY RESEARCH INSTITUTE
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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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • B32B27/281—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 polyimides
    • 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
    • B32B27/286—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 polysulphones; polysulfides
    • 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
    • B32B27/288—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 polyketones
    • 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
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured 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
    • 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
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different 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
    • B32B2274/00—Thermoplastic elastomer material

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The invention relates to a composite process thin layer and a preparation method thereof. The composite process sheet comprises a body structure formed of a planar textile material and containing a composite region formed by compounding the textile material with a fluid material containing a resin, the composite region having a gradient composite structure boundary in which the resin content decreases in an in-plane direction of the body structure from the composite region to a non-composite region. The invention uses the fluid material containing resin to compound with the textile material as the main structure in the way of boundary tape casting to form the composite process thin layer with the boundary composite area of the preset gradient composite structure, the composite process thin layer can be used as the uniform pressure auxiliary material when the composite material structure is formed, and the composite material structure with excellent surface is obtained by weakening or even eliminating the pressure mutation effect in the curing pressure field by using the composite area and the boundary of the gradient composite structure.

Description

Composite process thin layer and preparation method thereof
Technical Field
The invention relates to the technical field of composite material forming, in particular to a composite process thin layer and a preparation method thereof.
Background
The composite material structure is formed by hot-pressing and curing a blank body. In practical engineering practice, in some specific situations, a pressure jump area exists in a composite material structure curing pressure field, such as a combination process cover plate joint, and various surface quality defects such as resin-rich lines, molding steps and the like are easily formed on the surface of a workpiece due to the pressure jump effect in the curing pressure field. Therefore, the uniform pressure auxiliary material for weakening and even eliminating the pressure mutation effect in the curing pressure field is developed, and has important engineering application value for preparing a composite material structure with an excellent surface.
Accordingly, the inventors provide a composite process layer and a method of making the same.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a composite process thin layer and a preparation method thereof, which utilize the boundary tape casting effect of fluid when a fluid material containing resin is compounded with a textile material in a main structure to form the composite process thin layer with a preset gradient composite structure boundary composite area, the composite process thin layer can be used as a uniform pressure auxiliary material, and the composite area and the gradient composite structure boundary thereof are utilized to weaken or even eliminate the pressure mutation effect in a curing pressure field, thereby obtaining a composite material structure with an excellent surface.
Embodiments of the present invention provide a composite process sheet comprising a body structure of planar textile material containing a composite region formed by the composite of the textile material and a fluid material containing resin, the composite region having a gradient composite structure boundary in which the resin content decreases in an in-plane direction of the body structure from the composite region to a non-composite region.
Further, the plane textile material is non-woven fabric or fiber fabric, and the structure form of the main structure is a single-layer or multi-layer laminated body.
Further, the composite area formed by the textile material and the fluid material containing resin is one or more.
Furthermore, the overall thickness H and the length L of the gradient composite structure boundary of the composite region satisfy the numerical relationship that L is more than or equal to 3H, and H is less than or equal to 0.3 mm.
Furthermore, the overall thickness H and the length L of the gradient composite structure boundary of the composite region satisfy the numerical relationship that L is more than or equal to 10H.
Further, the resin at least comprises one of thermosetting bismaleimide resin, epoxy resin and polyimide resin or one of thermoplastic polyethersulfone, polyetherketone, polyetheretherketone and polyaryletherketone.
In a second aspect, the invention further provides a preparation method of the composite process thin layer, which comprises the following steps: partially immersing a fluid material containing resin on a main body structure of a plane textile material, and compounding the fluid material containing the resin with the plane textile material in a boundary casting mode to form a composite process thin layer with a preset gradient composite structure boundary compounding area, wherein the resin content of the gradient composite structure boundary is gradually reduced from the compounding area to a non-compounding area along the in-plane direction of the main body structure.
Further, the fluid material containing resin is viscous fluid resin or resin solution.
In summary, the main structure of the composite process thin layer is in the form of a planar textile material, the textile material has high structure flexibility and good process coverage, can establish good matching with a molding surface of a composite material structure to be prepared, contains a composite area formed by compounding the textile material and a fluid material containing resin, the composite area has a gradient composite structure boundary, the resin content of the gradient composite structure boundary decreases progressively from the composite area to the non-composite area along the in-plane direction of the main structure, the composite area has high rigidity and can be used as a bearing unit of a pressure mutation area, and the gradient composite structure boundary can realize natural transition of structural rigidity between the composite area and the non-composite area through gradient change of the resin content, so that the pressure mutation effect is eliminated. Meanwhile, the thin layer of the composite process is prepared by adopting the boundary casting effect, the boundary casting effect is the characteristic of fluid containing resin, and the tip flow front edge of the fluid material can be naturally expanded along the in-plane direction of the main body structure when the thin layer is compounded with the main body structure, so that the thin layer is compounded with the main body structure in a mode that the fluid content is gradually reduced, and a compound area with a gradient compound structure boundary is very conveniently formed. In addition, the method also makes more specific limitation particularly aiming at the structure of the thin layer of the composite process and the method thereof, and further ensures the implementation effect of the whole invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a composite process layer according to an embodiment of the present invention.
In the figure: 1-a body structure; 2-a recombination zone; 3-gradient composite structure boundaries; h-thickness; l-length.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in connection with fig. 1, the composite process sheet comprises a body structure 1 formed of a planar textile material, containing a composite region 2 formed of a textile material compounded with a resin-containing fluid material, the composite region 2 having a gradient composite structure boundary 3 in which the resin content decreases in the in-plane direction of the body structure 1 from the composite region 2 to a non-composite region.
Wherein, the plane textile material is non-woven fabrics or fiber fabrics, and the structure form of the main structure 1 is a single-layer or multi-layer laminated body.
As an alternative embodiment, the composite region 2 formed by the textile material and the fluid material containing resin is one or more. Moreover, the overall thickness H and the length L of the gradient composite structure boundary 3 of the composite region 2 satisfy the numerical relationship that L is more than or equal to 3H, and H is less than or equal to 0.3 mm. Preferably, the overall thickness H and the length L of the gradient composite structure boundary 3 of the composite region 2 satisfy the numerical relationship of L ≧ 10H;
further, the resin at least comprises one of thermosetting bismaleimide resin, epoxy resin and polyimide resin or one of thermoplastic polyethersulfone, polyetherketone, polyetheretherketone and polyaryletherketone.
The invention also provides a preparation method of the composite process thin layer, which is characterized in that a main body structure 1 formed by a plane textile material is partially immersed with a fluid material containing resin, the fluid material containing the resin is compounded with the textile material in a boundary casting mode to form the composite process thin layer of a composite area 2 with a preset gradient composite structure boundary 3, and the resin content of the gradient composite structure boundary 3 is gradually reduced from the composite area 2 to a non-composite area along the in-plane direction of the main body structure 1.
In the preparation method of the composite process thin layer, the fluid material containing the resin is compounded with the textile material in the local part of the main structure 1 in a boundary casting mode, the boundary casting mode can be implemented by firstly carrying out boundary casting on the fluid material containing the resin and then compounding the fluid material containing the resin with the textile material, or the boundary casting of the fluid material containing the resin is blended into the compounding process of the fluid material containing the resin and the textile material, or the two modes are combined, and each boundary casting mode can be implemented by adopting one or more steps. The two layers of integral non-woven fabrics are taken as a main structure, and the two layers of integral non-woven fabrics and bismaleimide resin are subjected to five times of boundary tape casting to prepare the composite process thin layer. Firstly, utilizing the boundary casting effect of viscous-flow-state resin under the high-temperature condition, and carrying out hot pressing to form a bismaleimide resin adhesive film with a primary casting boundary; secondly, brushing acetone on the boundary of the bismaleimide resin adhesive film with a primary casting boundary, and obtaining the bismaleimide resin adhesive film with a secondary boundary casting by utilizing the boundary casting effect of an acetone solution of bismaleimide resin; then, carrying out hot-pressing compounding on the part of the main structure formed by the bismaleimide resin adhesive film with the secondary casting boundary and the two layers of integral non-woven fabrics, and forming a compounding area with a gradient compounding boundary A in the local area of the two layers of integral non-woven fabrics by utilizing the boundary casting effect of viscous-flow bismaleimide resin; thirdly, acetone coating is carried out on the gradient composite boundary A, and a composite area with a gradient composite boundary B is obtained by utilizing the boundary tape casting effect of acetone solution of bismaleimide resin; and finally, curing at high temperature, and obtaining the composite process thin layer with the non-woven fabric and bismaleimide resin composite curing structure C by utilizing the boundary casting effect of viscous bismaleimide resin again.
It should be noted that the composite process thin layer may also be made of a main structure formed by other planar textile materials, or other resin systems at least including one of thermosetting bismaleimide resin, epoxy resin, polyimide resin, or one of thermoplastic polyethersulfone, polyetherketone, polyetheretherketone, and polyaryletherketone, and may be prepared by one or more boundary casting processes, and optionally by direct compounding or hot-pressing curing compounding.
The above description is only an example of the present application and is not limited to the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (8)

1. A composite process sheet comprising a body structure formed of a planar textile material and containing a composite region formed by the planar textile material composited with a fluid material containing a resin, the composite region having a gradient composite structure boundary in which the resin content decreases in an in-plane direction of the body structure from the composite region to a non-composite region.
2. A composite technical sheet according to claim 1, wherein the planar textile material is a non-woven fabric and the main structure is in the form of a single or multi-layer laminate.
3. A composite process sheet according to claim 1, in which there are one or more composite zones formed by the composite of the planar textile material and the resin-containing fluid material.
4. The composite process sheet of claim 1, wherein the overall thickness H of the gradient composite structure boundary of the composite zone and its length L satisfy a numerical relationship of L ≥ 3H, and H ≤ 0.3 mm.
5. The composite process sheet of claim 4, wherein the overall thickness H of the gradient composite structure boundary of the composite zone and its length L satisfy a numerical relationship L ≧ 10H.
6. The composite process sheet of claim 1, wherein the resin comprises at least one of a thermosetting bismaleimide resin, an epoxy resin, a polyimide resin, or one of a thermoplastic polyethersulfone, polyetherketone, and polyetheretherketone.
7. A method of making a composite process sheet according to any one of claims 1 to 6, wherein a resin-containing fluid material is partially impregnated into a body structure of a planar textile material, and the resin-containing fluid material is boundary-cast with the planar textile material to form a composite process sheet having a composite zone with a predetermined gradient composite structure boundary, the resin content of the gradient composite structure boundary decreasing in an in-plane direction of the body structure from the composite zone to a non-composite zone.
8. A method of manufacturing a composite process sheet according to claim 7, wherein the resin-containing fluid material is a viscous fluid resin or a resin solution.
CN201810816165.4A 2018-07-24 2018-07-24 Composite process thin layer and preparation method thereof Active CN109159517B (en)

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GB911144A (en) * 1961-04-04 1962-11-21 Woolley Mfg Company Golf club shaft
US4261945A (en) * 1979-02-21 1981-04-14 American Cyanamid Company Method for providing shaped fiber
CN102837435B (en) * 2012-08-15 2014-12-10 上海交通大学 Flow front prediction method of non-isothermal resin transfer molding based on mid-plane model
JP6474813B2 (en) * 2013-09-04 2019-02-27 バイチーム アーベーＢｉｔｅａｍ Ａｂ Method and means for weaving 3D fabric, 3D fabric product and use thereof

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