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Preparation method for organic silicon resin with high curing activity and high temperature resistance

An organosilicon, high temperature resistant technology, used in chemical materials and light industry fields, can solve the problem of high cost of silicone resin, and achieve the effects of long curing time, good light stability and easy availability of raw materials

Inactive Publication Date: 2009-09-16
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw material phenylchlorosilane or phenylalkoxysilane used in the synthesis of phenyl-containing silicone resin is more expensive, resulting in high cost of the prepared silicone resin

Method used

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  • Preparation method for organic silicon resin with high curing activity and high temperature resistance
  • Preparation method for organic silicon resin with high curing activity and high temperature resistance
  • Preparation method for organic silicon resin with high curing activity and high temperature resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1. Preparation of hydrolyzate

[0044] Put 10ml of ethyltriethoxysilane, 30ml of propyltriethoxysilane, and 89.5ml of absolute ethanol into a four-necked flask. After stirring evenly, add 0.83ml (0.83×10 -3 mol) hydrochloric acid solution, heated under mechanical stirring, and kept constant after rising to a certain temperature. Then measure 4.5ml of deionized water, slowly drop it into a four-neck flask with a dropping funnel, stir rapidly, and hydrolyze at constant temperature for a certain period of time. Draw the stannate ester of 2.36ml (0.007mol) with the pipetting hall, and after dissolving with the organic solvent of 20ml, slowly drip into the hydrolyzate of the four-necked flask with the dropping funnel, then drip into the deionized water of 0.5ml, Then continue constant temperature hydrolysis for a certain period of time. After completion of the reaction, the hydrolysis mixture was still a clear and transparent liquid.

[0045] Step 2. Polycondensation...

Embodiment 2

[0048] Step 1. Preparation of hydrolyzate

[0049] Put 15ml of propyltriethoxysilane, 30ml of n-octyltriethoxysilane, and 125ml of propanol into a four-necked flask, stir well, then add 1ml (1×10 -3 mol) of sodium hydroxide solution, heated under mechanical stirring, and kept constant after rising to a certain temperature. Then measure 6.93ml of deionized water, slowly drop it into a four-necked flask with a dropping funnel, stir rapidly, and hydrolyze at constant temperature for a certain period of time. Use a pipette to absorb 3.01ml of lead ester, dissolve it with 10ml of organic solvent, slowly drop it into the hydrolyzate in the four-neck flask with a dropping funnel, then add 0.8ml of deionized water, and then continue the constant temperature hydrolysis certain time. After the reaction was completed, the hydrolysis mixture was still a clear and transparent liquid.

[0050] Step 2. Polycondensation reaction of silanol

[0051] The reaction device in step 1 is changed...

Embodiment 3

[0053] Step 1. Preparation of hydrolyzate

[0054] Put 20ml of n-butyltriethoxysilane, 20ml of n-hexyltriethoxysilane, and 125ml of n-butanol into the four-necked flask. After stirring evenly, add 0.9ml (0.9×10 -3 mol) of sodium hydroxide solution, heated under mechanical stirring, and kept constant after rising to a certain temperature. Then measure 7.2ml of deionized water, slowly drop it into a four-necked flask with a dropping funnel, stir rapidly, and hydrolyze at constant temperature for a certain period of time. Draw 2.89ml of titanate with a pipette, dissolve it with 15ml of organic solvent, slowly drop it into the hydrolyzate in the four-necked flask with a dropping funnel, then add 0.6ml of deionized water, and then continue the constant temperature hydrolysis certain time. After the reaction was completed, the hydrolysis mixture was still a clear and transparent liquid.

[0055] Step 2. Polycondensation reaction of silanol

[0056] The reaction device in step 1 ...

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Abstract

The invention discloses a preparation method for an organic silicon resin with high curing activity and high temperature resistance, which comprises the following steps: carrying out hydrolytic polycondensation on two kinds of alkyl alkoxy silane and one kind of metal acid ester to polymerize into a silicone resin polymer with proper molecular weight; and using a low-toxic organic solvent as a diluting agent, and adding a curing agent into the low-toxic organic solvent so as to obtain the organic silicon resin with high curing activity and high temperature resistance which can be used as a coating matrix resin. Compared with the common organic silicon resin, the synthetical organic resin has the advantages of excellent heat resistance, high curing activity, good adhesive force, considerable stability, excellent light stability, and excellent environmental friendliness; the preparation method has simpler synthetic route, easily-obtained raw materials, and low price; and the synthetical silicon resin is a low-cost and high performance resin, and is suitable for large-scale preparation and industrialized production.

Description

technical field [0001] The invention belongs to the technical field of light industry and chemical materials. The invention relates to a preparation method of a high-curing activity high-temperature-resistant organic silicon resin, which can be used as a paint matrix resin. Background technique [0002] High-temperature-resistant coatings are widely used, and are suitable for high-temperature protection of high-temperature parts such as automobile exhaust pipes, blast furnaces, coke ovens, petroleum crackers, and steel chimneys. With the continuous development of my country's modern industry and the deepening of opening to the outside world, especially in metallurgy, petrochemical, energy, new materials and other industries, new processes and new equipment continue to emerge, and the demand for high-temperature resistant coatings is increasing. Therefore, The development of high-performance high-temperature-resistant coatings has broad market prospects. [0003] Since the 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/42
Inventor 郝志峰王雪镅吴雅红余坚余林孙明李永峰
Owner GUANGDONG UNIV OF TECH
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