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A kind of alkali-resistant high temperature resistant thermosetting resin and its application

A solid resin, high-resistance technology, applied in the field of resin binders, can solve the problems of resin/silicon carbide ceramics with poor impact resistance, poor wear resistance, inability to meet high temperature and strong alkali operating environment, uneven distribution of silicon carbide particles, etc. Achieve the effect of improving rigidity, improving stability and tear resistance, and improving flexural strength

Active Publication Date: 2020-05-19
HANJIANG HONGYUAN XIANGYANG SILICON CARBIDE SPECIAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The resin / silicon carbide ceramic material is prepared in the following way: mix silicon carbide particles and thermosetting resin to obtain a castable, then pour it into a formed mold, and cure it under a certain temperature condition to obtain a resin / silicon carbide ceramic. However, in the castable, the silicon carbide particles are unevenly distributed or easily layered, and the cured resin is filled between the silicon carbide particles, and the bonding effect is poor, resulting in the impact resistance and wear resistance of resin / silicon carbide ceramics. Poor; the strength of the existing resin / silicon carbide ceramics will decrease in an environment with high alkalinity and high temperature, and cannot meet the operating environment of high temperature and strong alkali; the mold used for casting requires anti-sticking and excellent sealing performance, and now Some materials and molds are difficult to prepare resin / silicon carbide ceramics with large volume

Method used

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  • A kind of alkali-resistant high temperature resistant thermosetting resin and its application
  • A kind of alkali-resistant high temperature resistant thermosetting resin and its application
  • A kind of alkali-resistant high temperature resistant thermosetting resin and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An alkali-resistant and high-temperature resistant thermosetting resin, comprising the following components in parts by weight:

[0028]

[0029] Using the alkali-resistant and high-temperature resistant thermosetting resin of this embodiment to prepare resin / silicon carbide ceramics, the preparation process includes the following steps:

[0030] S1, weigh the epoxy resin E51, novolac epoxy resin, polyethylene terephthalate, glass fiber, phenyltrialkoxysilane, ethylenediamine, benzyldimethylamine and n-butyl Glycidyl ether, mixed with 500 parts of silicon carbide particles with a particle size of 1 to 3 mm and stirred evenly to obtain a solidified material;

[0031] S2, under the condition of 120° C., the curing material is cured for 3 hours to prepare resin / silicon carbide ceramics.

Embodiment 2

[0033] An alkali-resistant and high-temperature resistant thermosetting resin, comprising the following components in parts by weight:

[0034]

[0035] Using the alkali-resistant and high-temperature resistant thermosetting resin of this embodiment to prepare resin / silicon carbide ceramics, the preparation process includes the following steps:

[0036] S1, weigh the epoxy resin E44, phenolic epoxy resin, polyethylene terephthalate, asbestos-free mineral fiber, methylphenyldialkoxysilane, m-xylylenediamine, high The carbon number aliphatic diamine, triethylenediamine and phenyl glycidyl ether are mixed with 600 parts of silicon carbide particles with a particle size of 1-3mm and stirred evenly to obtain a cured material;

[0037] S2, under the condition of 70° C., the curing material is cured for 3 hours to prepare resin / silicon carbide ceramics.

Embodiment 3

[0039] An alkali-resistant and high-temperature resistant thermosetting resin, comprising the following components in parts by weight:

[0040]

[0041] Using the alkali-resistant and high-temperature resistant thermosetting resin of this embodiment to prepare resin / silicon carbide ceramics, the preparation process includes the following steps:

[0042] S1, weigh the epoxy resin E31, phenolic epoxy resin, polyethylene terephthalate, aramid fiber, diphenyldialkoxysilane, diethylenetriamine, N, N' -Dimethylpiperazine, boric acid, and allyl glycidyl ether are mixed with 700 parts of graded silicon carbide particles and stirred evenly to obtain a solidified material;

[0043] S2, curing the cured material at 100° C. for 2 hours to prepare resin / silicon carbide ceramics, the resin / silicon carbide ceramics has a diameter of 2 m.

[0044] In this embodiment, the graded silicon carbide particles include silicon carbide particles with the following particle sizes in parts by weight...

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Abstract

The invention belongs to the technical field of resin binding agents, and particularly relates to alkali-resistant high-temperature-resistant thermosetting resin and application thereof. The alkali-resistant high-temperature-resistant thermosetting resin is prepared from the following compositions in parts by weight: 100 parts of bisphenol A type epoxy resin, 10-30 parts of phenolic type epoxy resin, 0.4-2 parts of polyethylene glycol terephthalate, 0.5-3 parts of reinforced fibers, 4-8 parts of a silane coupling agent, 4-8 parts of a curing agent, and 0.5-2 parts of a curing accelerator. Thegood effects of impact resistance and folding resistance are achieved, the volumetric shrinkage is small after the alkali-resistant high-temperature-resistant thermosetting resin is cured, the gelation time is long, performance basically does not change under the working conditions of high temperature and strong alkali, and comprehensive performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of resin binders, in particular to an alkali-resistant and high-temperature resistant thermosetting resin and its application. Background technique [0002] The resin / silicon carbide ceramic material is prepared in the following way: mix silicon carbide particles and thermosetting resin to obtain a castable, then pour it into a formed mold, and cure it under a certain temperature condition to obtain a resin / silicon carbide ceramic. However, in the castable, the silicon carbide particles are unevenly distributed or easily layered, and the cured resin is filled between the silicon carbide particles, and the bonding effect is poor, resulting in the impact resistance and wear resistance of resin / silicon carbide ceramics. Poor; the strength of the existing resin / silicon carbide ceramics will decrease in an environment with high alkalinity and high temperature, and cannot meet the operating environment of high tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/14
Inventor 李秋南刘凯王惠民阳白梅吕仁亮余小峰李再勇黄涛
Owner HANJIANG HONGYUAN XIANGYANG SILICON CARBIDE SPECIAL CERAMICS