Method for preparing ablative resistance resin

A technology of ablation resistance and resin, which is applied in the field of thermosetting resin preparation, can solve the problems of poor toughness interface bonding performance, heat resistance performance, residual carbon rate needs to be improved, high cost polyaryleacetylene resin, etc., to achieve the reduction of curing peak temperature, Improved interlayer shear strength and good curing processability

Active Publication Date: 2013-03-13
浙江世涛鼎革新材料有限责任公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, polyarylene molecules contain a large number of aromatic rings, resulting in extremely poor toughness of the resin and interfacial bonding between the resin and the reinforcing fibers
In addition, the curing reaction of polyaryleacetylene resin has a large heat release and is easy to explode. The entire curing process is complicated and difficult to control, which brings a lot of inconvenience to the preparation of composite materials.
The high cost is also an obstacle to the wide application of polyarylene resins
[0004] In view of the common defects of poor toughness, poor manufacturability, and heat resistance, especially the residual carbon rate of existing high-temperature thermosetting resins, researchers have proposed a variety of modification methods for such resins, but these Traditional modification methods are mostly difficult to reconcile the contradiction between resin heat resistance, processability and toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: 1) first, by mass parts, the hyperbranched polyborate resin of 30 parts is dissolved in the strong polar solvent N of 50 parts, in the N-dimethylformamide;

[0016] 2) Next, 100 parts of high-temperature-resistant thermosetting resin aminophenol-formaldehyde resins are dissolved in 100 parts of organic solvent acetone by mass parts;

[0017] 3) Finally, at 25°C, mix the above hyperbranched polyborate resin solution with the high temperature resistant thermosetting resin solution at a mass ratio of 1:1, and stir for 15 minutes to obtain a uniformly mixed ablation resistant resin solution.

Embodiment 2

[0018] Embodiment 2: 1) First, 10 parts of hyperbranched polyborate resins are dissolved in 50 parts of strong polar solvent N-methyl-2-pyrrolidone by mass parts;

[0019] 2) Next, 70 parts of high temperature resistant thermosetting resin barium phenolic resins are dissolved in 100 parts of organic solvent ethanol by mass parts;

[0020] 3) Finally, at 50°C, mix the above hyperbranched polyborate resin solution with the high-temperature-resistant thermosetting resin solution at a mass ratio of 1:1, and stir for 10 minutes to obtain a uniformly mixed ablation-resistant resin solution.

Embodiment 3

[0021] Embodiment 3: 1) first, in the highly polar solvent dimethyl sulfoxide of 50 parts by mass parts, the hyperbranched polyborate resin of 5 parts is dissolved;

[0022] 2) Next, 50 parts of high-temperature-resistant thermosetting resin phosphorus phenolic resins are dissolved in 100 parts of organic solvent toluene by mass parts;

[0023] 3) Finally, at 90°C, mix the above hyperbranched polyborate resin solution with the high temperature resistant thermosetting resin solution at a mass ratio of 1:1, and stir for 30 minutes to obtain a uniformly mixed ablation resistant resin solution.

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Abstract

The invention discloses a method for preparing ablative resistance resin which is a compound of hyperbranched polyborate ester resin and high-temperature resistance thermosetting resin. The hyperbranched polyborate ester is a hyperbranched polymer which contains boron, is provided with a rigid skeleton and is synthesized by condensation reaction of a boron-containing compound and polyatomic alcohol or polyatomic phenol; and the hyperbranched molecular structure and excellent heat resistance of the polymer are utilized so that the polymer and the high-temperature resistance thermosetting resin are compounded, thus the heat resistance, mechanical property and processing manufacturability of resin can be simultaneously improved. The ablative resistance resin obtained by the method has the advantages of high carbon residue rate, excellent mechanical property and ablative resistance, is easy to process, and can be used for preparing ablative resistance materials, carbon materials, anti-friction materials and the like.

Description

technical field [0001] The invention relates to a method for preparing a thermosetting resin, in particular to a method for preparing an ablation-resistant resin by compounding a hyperbranched polyborate resin and a high-temperature-resistant thermosetting resin. Background technique [0002] In the aerospace field, the development of aircraft thermal protection materials has always been an important research topic. The working environment of aerospace vehicles is harsh. In order to ensure their long-term work under high heat flux conditions, effective thermal protection measures must be taken. The ablation method is currently the most effective and widely used method of heat protection. This method removes a large amount of heat through chemical and physical processes such as decomposition, depolymerization, melting, evaporation, gasification, and ionization of materials to achieve heat protection. Purpose. The currently widely used ablation material is a composite materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L79/04C08L61/00C08L65/00C08L85/04
Inventor 井新利司晶晶许培俊
Owner 浙江世涛鼎革新材料有限责任公司
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