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Thermostable organosilicon resin preparation method

A silicone and high-temperature-resistant technology, which is applied in the field of preparation of high-temperature-resistant silicone resin, can solve problems such as poor performance and smoke generation, and achieve the effects of uniform molecular weight, reduced emissions, and reduced labor intensity of workers

Inactive Publication Date: 2007-05-16
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] Diphenyltrichlorosilane 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 consumption of hydrolysis solvent is 35~45wt% of the water consumption, under the condition of stirring, under the condition of 15~20 ℃, drop the monomer mixtu...

Embodiment 2

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

[0032] Monomethyltrichlorosilane 80%;

[0033] Dimethyldichlorosilane 8%;

[0034] Phenyltrichlorosilane 8%;

[0035] Diphenyltrichlorosilane 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 consumption of hydrolysis solvent is 35~45wt% of the water consumption, under the condition of stirring, under the condition of 15~20 ℃...

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Abstract

The invention discloses a preparing method of high-temperature resistant organic silicon resin, which comprises the following steps: blending methylchlorosilane and phenyl-chloride silicane monomer with composite solvent of PMA, BAC, toluene and anhydrous alcohol; alcoholyzing and hydrolyzing under low temperature; adopting alkaline to neutralize; adding water once; polycondensing; adding silanol; refluxing; adding polymerization inhibitor to obtain the product.

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 at 600°C (above 600°C), but it is used in open flame ovens, grills, heat insulation of steelmaking furnaces, electric hobs, electric hairpins, non-smoking exhaust pipes, etc. Thermal paint requires high temperature resistance above 600°C. When preparing the above heat-resistant paint, heat-resistant and environmentally friendly silicone resin is required. 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 invention provides a method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/24C08L83/08C08K5/101
Inventor 金小凤彭银波
Owner 金小凤
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