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Method for preparing resin-base composite material thermal protection structure from modified resin by vapor deposition process

A technology of vapor deposition method and thermal protection structure, which is applied to epoxy resin coatings, devices for coating liquids on surfaces, coatings, etc. The effect of stable and controlled process, simple molding process and improved thermal protection efficiency

Active Publication Date: 2012-09-12
HARBIN FRP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing resin-based composite materials cannot meet the requirements of ultra-high temperature, strong erosion and short-term aerodynamic erosion and ablation, and to provide a modified resin vapor deposition method to prepare resin-based composite materials Methods of Thermally Protected Structures

Method used

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Effect test

specific Embodiment approach 1

[0008] Specific implementation mode 1: This implementation mode is a method for preparing a thermal protection structure of a resin-based composite material by a modified resin vapor deposition method, which is specifically completed according to the following steps:

[0009] 1. Surface treatment of resin-based composite material base material: use sandblasting method or 80# sandpaper to evenly polish the surface of resin-based composite material base material, then use acetone to clean 2 to 4 times, and then use ethyl acetate to clean and wash 2 to 4 times. Dry to constant weight to obtain the resin-based composite material base material after surface treatment; 2. Deploy modified resin: mix trifunctional epoxy resin, curing agent, modifier, Stir the accelerator and dispersant evenly, then add the diluent at a stirring speed of 40r / min to 80r / min, dilute to a viscosity of 19m 2 / s~25m 2 / s, the modified resin is obtained; 3. Spray deposition: add the modified resin obtained ...

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the base material of the resin-based composite material described in step 1 is polyester resin-based composite material, epoxy resin-based composite material, bismaleimide Amine resin-based composites, polyimide resin-based composites, or cyanate resin-based composites. Others are the same as the first embodiment.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the curing agent described in step 2 is to adopt m-phenylenediamine and DDM curing agent to mix by mass ratio 1: (0.8~1.2) to make. Others are the same as those in Embodiment 1 or 2.

[0016] The DDM curing agent described in this embodiment is a commercially available mixture of 4,4-diaminodiphenylmethane with a mass fraction of 75% and polyphenylpolyaminomethane with a mass fraction of 25%.

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Abstract

The invention discloses a method for preparing a resin-base composite material thermal protection structure from modified resin by a vapor deposition process, and relates to a preparation method for a resin-base composite material thermal protection structure. The method aims to solve the problem that an existing resin-base composite material cannot meet requirement on super-high temperature, powerful scouring and aerodynamic scouring ablation with short duration. The method includes firstly treating a resin-base composite material protection interface; secondly, preparing the modified resin from epoxy resin with three functional groups, a hardener, a modifier, an accelerator, a dispersing agent and a diluent; thirdly, spraying the modified resin prepared at the second step on the surface, which is treated at the first step, of the resin-base composite base material, and allowing deposition for a certain period; and solidifying by means of gradually increasing the temperature to obtain the resin-base composite material thermal protection structure prepared from the modified resin by the vapor deposition process. The method is mainly used for preparing the thermal protection structure on the surface of the resin-base composite material.

Description

technical field [0001] The invention relates to a preparation method of a thermal protection structure of a resin-based composite material. Background technique [0002] At present, polyester resin, epoxy resin, double horse resin, polyimide resin and even cyanate resin, which are commonly used in the matrix of resin-based composite materials, have an applicable temperature of no more than 400 ° C, which is far from being able to meet ultra-high temperature and strong erosion. , The actual working conditions of short-term aerodynamic ablation cause the cracking reaction of the matrix of the current resin-based composite material and the rapid destruction of the structure, and the loss of structural characteristics, thus losing the application prospect of the resin-based composite material in this specific field . Contents of the invention [0003] The purpose of the present invention is to solve the problem that the existing resin-based composite materials cannot meet the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D3/00B05D3/10C08J7/04C09D163/00C09D7/12
Inventor 陈辉吴宏博张淑萍于柏峰
Owner HARBIN FRP INST
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