Method for preparing high temperature resistant silicone resin

A technology of organosilicon and high temperature resistance, which is applied in the field of preparation of high temperature resistant organosilicon resin, which can solve problems such as smoke generation and poor performance, and achieve the effects of reduced emissions, uniform molecular weight, and environmental protection

Inactive Publication Date: 2009-05-06
金小凤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to solve the problem that the existing organic silicon resin will smoke at high temperature and have poor performance at high temperature. The present invention provides a preparation method of high temperature resistant organic silicon resin. The resin can be used in the preparation of heat-resistant paints of various colors above 600°C, in the manufacture of open flame ovens, grills, heat insulation of steelmaking furnaces, electric hobs, electric hairpins, non-smoking exhaust pipes, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. Formulation: each monomer raw material is by weight percentage:

[0021] Monomethyltrichlorosilane 81.5%;

[0022] Dimethyldichlorosilane 8%;

[0023] Phenyltrichlorosilane 7.5%;

[0024] Diphenyldichlorosilane 3%;

[0025] Each solvent in the mixed solvent is by weight percentage:

[0026] Propylene glycol methyl ether acetate 20%;

[0027] Toluene 50%;

[0028] Absolute ethanol 30%;

[0029] Fully mix the above-mentioned monomers in proportion and press them into the dripping high-level tank, mix the above-mentioned solvents in proportion to form a hydrolysis solvent, and add 35-40% of the total weight of the monomer mixture. The hydrolysis solvent and water are added to the reaction kettle, The molar ratio of chlorine to water in the monomer mixture is n(H 2 O) / n(Cl) is in the range of 5:1~10:1, the amount of hydrolysis solvent is 35~45wt% of the amount of water, and under the condition of 15~20℃ under stirring, the monomer mixture is dripped Put it into t...

Embodiment 2

[0031] a. Formulation: each monomer raw material is by weight percentage:

[0032] Monomethyltrichlorosilane 80%;

[0033] Dimethyldichlorosilane 8%;

[0034] Phenyltrichlorosilane 8%;

[0035] Diphenyldichlorosilane 4%;

[0036] Each solvent in the mixed solvent is by weight percentage:

[0037] Propylene glycol methyl ether acetate 20%;

[0038] Toluene 50%;

[0039] Absolute ethanol 30%;

[0040] The above-mentioned monomers are fully mixed in proportion and then pressed into the dripping high-level tank, and the above-mentioned solvents are mixed in proportion to form a hydrolysis solvent, and 35-40% of the total weight of the monomer mixture is added. The hydrolysis solvent and water are added to the reaction kettle, and the water The molar ratio of chlorine to the monomer mixture is n(H 2 O) / n(Cl) is in the range of 5:1~10:1, the amount of hydrolysis solvent is 35~45wt% of the amount of water, and under the condition of 15~20℃ under stirring, the monomer mixture i...

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Abstract

The invention relates to a method for preparing organic silicone resin, in particular to a method for preparing heat-resistant organic silicone resin, wherein methyl chlorosilane monomers and phenyl chlorosilane monomers are mixed, added into a mixed solvent of PMA, BAC, toluene and anhydrous alcohol, subjected to alcoholysis and hydrolysis at a low temperature synchronously, neutralized by alkali, subjected to water scrubbing for one time, subjected to polycondensation, silanol, reflux and synthesis, and added with a polymerization inhibitor finally to prepare the heat-resistant organic silicone resin. The method solves the problems of smoke formation of the prior organic silicone resin at a high temperature and faded color of coating at a high temperature of more than 600 DEG C, and the organic silicone resin prepared by the method can be applied to prepare heat-resistant lacquer with various colors which can resist the high temperature of more than 600 DEG C and applied to manufacture open-fire coke ovens, grills, heat-insulated steelmaking furnaces, electric furnace discs, electric barrettes, non-smoking exhaust pipes and so on.

Description

technical field [0001] The invention relates to a preparation method of a silicone resin, in particular to a preparation method of a high temperature resistant silicone resin. Background technique [0002] Ordinary silicone resin will smoke at high temperature, and its performance is poor above 600 ° C. It is used in heat resistance of open flame ovens, grills, steelmaking furnace heat insulation, electric hobs, electric hairpins, and non-smoking exhaust pipes. The paint is required to be able to withstand high temperatures above 600°C. When preparing the above-mentioned heat-resistant paint, a heat-resistant and environmentally friendly silicone resin is required, and the existing silicone resin cannot meet the requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is: to solve the problem that the existing organic silicon resin will smoke at high temperature and have poor performance at high temperature. The present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/06
Inventor 金小凤彭银波
Owner 金小凤
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