Preparation method of a half-layer thermosetting resin-based composite structure

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...

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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

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