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Hydroxyl resin for organic silicon-coated material and preparation method of hydroxyl resin

A technology of coating material and hydroxyl resin, which is applied in the field of hydroxyl resin and its preparation, can solve the problems of limiting the application and development of silicone coating materials, poor tear resistance, and uneven performance, so as to avoid gel phenomenon and cure Short, easily controlled effects

Inactive Publication Date: 2016-09-28
成都大蓉新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the silicone coating materials on the market have different performances. They usually have shortcomings such as slow curing speed, low adhesive performance, and especially poor tear resistance, which seriously limit the application and development of silicone coating materials.

Method used

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  • Hydroxyl resin for organic silicon-coated material and preparation method of hydroxyl resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A hydroxyl resin for silicone coating materials:

[0031] (1) Mix 0.15kg hydrochloric acid, 0.9kg ethanol and 1.1kg water uniformly to obtain mixed material 1; mix 3kg tetraethyl orthosilicate-40 and 2kg hexamethyldisiloxane uniformly to obtain mixed material 2;

[0032] (2) Add the mixed material 1 into the reaction kettle, mix and stir evenly; then add the mixed material 2 into the reaction kettle, and mix and react for 40 minutes;

[0033] (3) Add 1.45kg of hexamethyldisiloxane to the reaction kettle, heat it up to 50°C, and then conduct a steady-temperature reflux reaction for 6 hours;

[0034] (4) After the stable temperature reflux reaction in step (3) is completed, let stand to separate layers, separate the lower oil layer, then add sodium carbonate aqueous solution to the oil layer to adjust the pH value to pH > 7, let stand to separate layers, and separate the lower layer Oil layer, then wash the oil layer with water, wash to oil layer pH=7, obtain resin liqui...

Embodiment 2

[0040] A hydroxyl resin for silicone coating materials:

[0041] (1) Mix 0.1kg hydrochloric acid, 1kg ethanol and 1kg water uniformly to obtain mixed material 1; mix 2.5kg tetraethyl orthosilicate-40 and 2.5kg hexamethyldisiloxane uniformly to obtain mixed material 2;

[0042] (2) Add the mixed material 1 into the reaction kettle, mix and stir evenly; then add the mixed material 2 into the reaction kettle, and mix and react for 40 minutes;

[0043] (3) Add 1.5kg of hexamethyldisiloxane to the reaction kettle, heat it up to 70°C, and then conduct a steady-temperature reflux reaction for 8 hours;

[0044] (4) After the stable temperature reflux reaction in step (3) is completed, let stand to separate layers, separate the lower oil layer, then add sodium carbonate aqueous solution to the oil layer to adjust the pH value to pH > 7, let stand to separate layers, and separate the lower layer Oil layer, then wash the oil layer with water, wash to oil layer pH=7, obtain resin liquid;...

Embodiment 3

[0050] A hydroxyl resin for silicone coating materials:

[0051] (1) Mix 0.5kg hydrochloric acid, 2kg ethanol and 3kg water uniformly to obtain mixed material 1; mix 5kg tetraethyl orthosilicate-40 and 4kg hexamethyldisiloxane uniformly to obtain mixed material 2;

[0052] (2) Add the mixed material 1 into the reaction kettle, mix and stir evenly; then add the mixed material 2 into the reaction kettle, and mix and react for 30 minutes;

[0053] (3) Add 2kg of hexamethyldisiloxane to the reaction kettle, heat it up to 60°C, and then conduct a steady-temperature reflux reaction for 6 hours;

[0054] (4) After the stable temperature reflux reaction in step (3) is completed, let stand to separate layers, separate the lower oil layer, then add sodium carbonate aqueous solution to the oil layer to adjust the pH value to pH > 7, let stand to separate layers, and separate the lower layer Oil layer, then wash the oil layer with water, wash to oil layer pH=7, obtain resin liquid;

[0...

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Abstract

The invention provides hydroxyl resin for an organic silicon-coated material and a preparation method of the hydroxyl resin. The hydroxyl resin for the organic silicon-coated material is prepared from hydrochloric acid, ethanol, ethyl orthosilicate-40, hexamethyldisiloxane, water, an aqueous sodium carbonate solution and hydroxyl-terminated polysiloxane through the steps of mixing, reacting and solvent removing. The organic silicon-coated material prepared from the hydroxyl resin for the organic silicon-coated material not only has the advantages of being low in viscosity, high in strength, short in curing time and the like, but also has the properties of being resistant to high and low temperature and aging, flexible, insulative, dampproof, resistant to shake, corona, electric leakage and cold and hot changes and the like; the preparation method is simple, environmentally friendly and free of pollution and has important significance in promoting application and development of the organic silicon-coated material.

Description

technical field [0001] The invention relates to the field of materials, in particular to a hydroxyl resin used for organosilicon coating materials and a preparation method thereof. Background technique [0002] Coating material refers to the early application of various functional electronic products PCB circuit boards, glass, metal and various plastics for protection. The surface of the material after coating should be moisture-proof, insulating, dust-proof, and electricity Halo and other functions. Today, with the rapid development of electronic technology, electronic and electrical products have penetrated into every corner of life. In a broad sense, the application of coating materials has been broadened to be widely used in the coating protection of electronic components, electrical modules, circuit boards, and light bulbs. And the coating protection of non-plating parts before electroplating. [0003] In recent years, organic silica gel has developed into the main ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/16C09D183/06
CPCC08G77/16C09D183/06
Inventor 曲艳斌吴念
Owner 成都大蓉新材料有限责任公司
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