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

A technology of thermal protection structure and vapor deposition method, which is applied in the direction of epoxy resin coating, device for coating liquid on the surface, coating, etc., can solve the problems that cannot meet the requirements of ultra-high temperature aerodynamic erosion and ablation, and achieve the implementation The process is stable and controlled, the interface performance is excellent, and the effect of improving high temperature resistance and erosion resistance

Active Publication Date: 2013-09-25
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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Examples

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specific Embodiment approach 1

[0008] Specific embodiment 1: This embodiment is a method for preparing a resin-based composite thermal protection structure by a modified resin vapor deposition method, which is specifically completed as follows:

[0009] 1. Surface treatment of the resin-based composite material substrate: Use sandblasting or 80# sandpaper to evenly polish the surface of the resin-based composite material substrate, then use acetone to clean it for 2 to 4 times, and then use ethyl acetate to clean it for 2 to 4 times. After drying to constant weight, the surface-treated resin-based composite material substrate is obtained; 2. Modified resin is formulated: the trifunctional epoxy resin, curing agent, modifier, and resin are mixed at a stirring speed of 40r / min~80r / min. Stir the accelerator and dispersant evenly, then add the diluent at the stirring speed of 40r / min~80r / min, and dilute to a viscosity of 19m 2 / s~25m 2 / s, the modified resin is obtained; 3. Spray deposition: add the modified resin ...

specific Embodiment approach 2

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

specific Embodiment approach 3

[0015] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the curing agent in step two is mixed with m-phenylenediamine and DDM curing agent at a mass ratio of 1: (0.8 to 1.2) to make. Others are the same as the first or second embodiment.

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

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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 method for preparing a resin-based composite material thermal protection structure. Background technique [0002] At present, polyester resin, epoxy resin, bimarine resin, polyimide resin and even cyanate resin are commonly used in the matrix of resin-based composite materials. The applicable temperature does not exceed 400℃, which is far from being able to meet the requirements of ultra-high temperature and strong erosion. , The actual working conditions of short-term aerodynamic ablation cause cracking reaction and rapid structural destruction of the current resin-based composite material matrix, and loss of structural characteristics, thereby losing the application prospect of resin-based composite materials in this specific field . Summary of the invention [0003] The purpose of the present invention is to solve the problem that existing resin-based composite materials cannot meet the requirements of ultra-high temperature, s...

Claims

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Application Information

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Patent Type & Authority Patents(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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