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Resin radical composite material and preparation method thereof

A composite material and resin-based technology, used in the field of composite materials and their preparation, can solve the problems of low bending strength and interlaminar shear strength, and achieve the effects of good compatibility, wide application range and good mechanical properties.

Active Publication Date: 2012-01-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low flexural strength and interlaminar shear strength of existing pure silicone resin composite materials at room temperature and after high temperature heat treatment, and to provide resin-based composite materials and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific Embodiment 1: In this embodiment, the resin-based composite material is made of silicone resin prepreg and phenolic resin prepreg, and the surface to be bonded is brushed with a silane coupling agent solution; wherein the resin-based composite material is 1 to 8 One layer of phenolic resin prepreg is placed in the middle, and 1 to 4 layers of silicone resin prepreg are laid on each side, or S+1 layers of silicone resin prepreg and S layers of phenolic resin prepreg are laid alternately, and the last The outer layer is silicone resin prepreg, S is 1~8; silicone resin prepreg is made of silicone resin and reinforcement, phenolic resin prepreg is made of phenolic resin and reinforcement; silicone resin is condensation type Methylphenyl silicone resin or modified condensation methylphenyl silicone resin; reinforcement is quartz fiber fabric, quartz fiber, high silica fiber or high silica fiber fabric; silane coupling agent solution is aminopropyl Triethoxysilane or...

specific Embodiment approach 2

[0010] Specific embodiment 2: The preparation method of the resin-based composite material in this embodiment is realized according to the following steps: a. Heat the silicone resin to 60-70°C, and then apply it on the reinforcing body to obtain a silicone resin prepreg; b. 1. Heating the phenolic resin to 40-50°C, and then coating it on the uncoated reinforcement to obtain a phenolic resin prepreg; c. Cutting the silicone resin prepreg and the phenolic resin prepreg, Soak the cloth to be combined and brush the silane coupling agent solution, then lay the layer, and then put it into the mold; d, put the mold on the hot press, preheat it at 80°C for 1 hour, and then raise the temperature to 120°C, Hot-press for 2 hours under the condition of 5-20MPa, heat-press for 2 hours under the condition of raising the temperature to 160°C, hot-press for 2 hours under the condition of raising the temperature to 200°C, and hot-press for 6 hours under the condition of raising the temperature...

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the pH value of the silane coupling agent solution in step c is 4.5-5.5. Other steps and parameters are the same as in the second embodiment.

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PUM

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Abstract

The invention relates to resin matrix composite and a preparation method thereof, relating to the composite materials and the preparation method thereof. The invention solves the problems of low bending strength and interlaminal shear strength of the current pure organic silicon resin composite at room temperature and after high-heat treatment. The resin matrix composite is prepared by organic silicon resin, phenolic resin, an enhanced body and silane coupling agent solution. The preparation method is as follows: a. organic silicon resin prepreg is prepared; b. phenolic resin prepreg is prepared; c. organic silicon resin prepreg and phenolic resin prepreg are cut and brushed by silane coupling agent solution and put into a mould after layering; d. after the mould is in hot pressing, the resin matrix composite is obtained. The resin matrix composite has good mechanical properties which are shown by that: the bending strength is increased by 2.5-43.3 %; the interlaminal shear strength is increased by 4.0 %-12.6 %; after the high-heat treatment, the bending strength is increased by 13.0-93.3 %, and the interlaminal shear strength is increased by 40.5%-73.0%.

Description

technical field [0001] The invention relates to composite materials and methods for their preparation. Background technique [0002] Due to its high specific modulus and high specific strength, high-performance resin-based composite materials are widely used in many fields such as aviation, aerospace, national defense, construction, machinery, electronics, cultural and sports, medical and biological engineering. [0003] At present, composite materials based on a single type of resin can no longer meet the functional requirements of composite materials. The mechanical properties of pure silicone resin composites are poor, and the flexural strength and interlaminar shear strength are not high at room temperature and after high temperature heat treatment, which limits the practical application. Contents of the invention [0004] The purpose of the present invention is to solve the problem of low bending strength and interlaminar shear strength of the existing pure silicone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/06B32B27/04B32B5/02B32B27/42B32B37/10B29C70/30B32B38/08
Inventor 黄玉东王磊刘丽
Owner HARBIN INST OF TECH