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Preparation method of semi-layer thermosetting resin based composite material structure

A composite material and thermoplastic resin technology, which is applied in the field of preparation of half-layer thermosetting resin-based composite material structure, can solve the problems of low thickness scale, damaged grinding and perforation, poor wear resistance of fabric materials, etc.

Active Publication Date: 2019-01-04
AVIC BASIC TECH RES INST
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Problems solved by technology

[0004] However, for the (1) approach, the single-layer thermosetting matrix composite structure has high wear resistance, and high-strength grinding methods must be used. However, its thickness scale is extremely low, and it is very easy to be damaged by grinding and perforation in the thickness direction; For the (2) approach, not only the thickness scale of the fabric material is also extremely low, but also the wear resistance of the fabric material is particularly poor, and it is easier to grind and perforate damage in the thickness direction
For the (3) approach, because there is a huge difference in the wear resistance of the thermosetting resin matrix composite structure and the fabric, the grinding process is easy to achieve, but it is absolutely impossible to form a thermosetting resin matrix composite structure by using a part of the thickness of the single-layer fabric. Not easy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of semi-layer thermosetting resin based composite material structure

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preparation example Construction

[0018] The preparation method of half-layer thermosetting resin matrix composite structure, see appendix figure 1 ,Specific steps are as follows:

[0019] a. First, use a single-layer fabric as a reinforcement, adopt the method of compounding one side of the single-layer fabric with a thermoplastic resin, and through process control, form a thermoplastic resin prepreg 1 in a part of the thickness of the single-layer fabric. Single-layer The material of the fabric is glass fiber or carbon fiber, the structure is one or more of plain weave, twill weave or satin weave, and the thermoplastic resin is one or more of polyaryletherketone, polyetheretherketone or polyethersulfone Various.

[0020] b. Then, compound the other side of the single-layer fabric with thermoplastic resin prepreg in the above-mentioned part of the thickness area, and compound it with thermosetting resin. Thermosetting resin refers to double horse resin, epoxy resin, cyanate resin or One or more of polyimide...

Embodiment

[0025] Preparation of half-layer EW100A / epoxy resin matrix composite structure

[0026] a. First, use the single-layer glass fiber plain weave fabric EW100A (single-layer thickness 0.1mm) as a reinforcement, and adopt the method of compounding one side of the single-layer EW100A fabric with thermoplastic polyaryletherketone resin, through process control, in a single layer A thermoplastic polyaryletherketone resin prepreg is formed in the area of ​​1 / 3 nominal thickness of the layer EW100A fabric;

[0027] b. Then, still using single-sided composite method, through process control, epoxy resin prepreg is formed in the 2 / 3 nominal thickness area of ​​single-layer EW100A fabric that is not composited with thermoplastic polyaryletherketone resin, and thermoplastic polyaryletherketone resin is obtained. Aryl ether ketone resin / epoxy resin laminated prepreg;

[0028] c. Secondly, the above-mentioned thermoplastic polyaryletherketone resin / epoxy resin laminated prepreg is used, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the technical field of composite material structure preparation and relates to a preparation method of a semi-layer thermosetting resin based composite material structure. Thepreparation method is characterized in that a thermoplastic resin / thermosetting resin superimposed prepreg is firstly prepared, a thermoplastic resin / thermosetting resin superimposed composite material structure is prepared in the way that a thermosetting resin prepreg is used as the attaching face of a mold, and finally the final semi-layer thermosetting resin based composite material structureis obtained through component dissolution of thermoplastic resin and grinding treatment of a fabric structure. The preparation method is simple and effective, the semi-layer thermosetting resin basedcomposite material structure having the thickness same as various sub-monolayer fabrics and having good surface can be obtained in virtue of volume occupation of the thermoplastic resin in part of thick area of a single-layer fabric reinforcement body and has a certain engineering reference value.

Description

technical field [0001] The invention belongs to the technical field of composite material structure preparation, and relates to a method for preparing a half-layer thermosetting resin-based composite material structure. Background technique [0002] Theoretically, the thermosetting resin-based composite structure formed by using a half-layer (partial thickness) single-layer fabric as a reinforcement-half-layer thermosetting resin-based composite structure has both good surface and low-thickness scale structure endowed by high resin content The endowed internal structure coordination has great application value. [0003] However, there are technical problems in the formation of half-layer thermosetting resin matrix composite structures in reality. According to the existing technology, there are no more than three ways to form a half-layer thermosetting resin-based composite structure: (1) forming a single-layer thermosetting resin-based composite structure and polishing it t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/54
CPCB29C70/30B29C70/545
Inventor 刘立朋陈蔚成理翟全胜
Owner AVIC BASIC TECH RES INST
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