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Preparation method for single-component POSS/addition type silicon resin nanocomposite

A technology of nanocomposite materials and silicone resin, which is applied in the field of preparation of single-component POSS/addition silicone resin nanocomposite materials, can solve the problems of low effective crosslink density, weak mechanical strength and impact of silicone resin, and intermolecular forces of organic silicon Minor problems, to achieve excellent thermal stability, system transparency, mechanical and high temperature performance improvement

Active Publication Date: 2014-05-28
JIANGXI PROVINCE HANGYU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small intermolecular force of silicone and the low effective crosslinking density, the mechanical strength (bending, stretching, impact, etc.) of the silicone resin is weak, and it needs to be reinforced by other means.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach ： Embodiment 1

[0024] Take 30 grams of methyltrimethoxysilane and 55.1 grams of ethyl orthosilicate, and inject them into three-necked flasks with stirring and condensing equipment. Set the temperature of the water bath to 50°C, adjust the pH of the system to 3 with concentrated hydrochloric acid, slowly drop 25.8 g of deionized water into the three-necked flask under stirring, and complete the drop within 1 hour. After reacting for 3 hours, a white solid product was obtained, and the reaction was stopped. The white solid was filtered out using a Buchner funnel, washed with tetrahydrofuran five times, and finally the treated white solid was placed in a vacuum oven and dried at 100°C for 24 hours to obtain The white solid powder is double bond-containing cage silsesquioxane (POSS).

[0025] Take 60 grams of methyltrimethoxysilane and 17.5 grams of dimethyldimethoxysilane and slowly drop them into a three-necked flask with 150 grams of absolute ethanol and 67.4 grams of deionized water in adva...

Embodiment 2

[0028] Take 30 grams of methyltriethoxysilane and 27.8 grams of ethyl orthosilicate, and inject them into three-necked flasks with stirring and condensing equipment. Set the temperature of the water bath to 50°C, adjust the pH of the system to 3 with concentrated hydrochloric acid, slowly drop 13.1 g of deionized water into the three-necked flask under stirring, and complete the drop within 1 hour. After reacting for 3 hours, a white solid product was obtained, and the reaction was stopped. The white solid was filtered out using a Buchner funnel, washed with tetrahydrofuran five times, and finally the treated white solid was placed in a vacuum oven and dried at 100°C for 24 hours to obtain The white solid powder is double bond-containing cage silsesquioxane (POSS).

[0029] Take 60 grams of methyltriethoxysilane and 10.9 grams of dimethyldiethoxysilane and slowly drop them into a three-necked flask with 150 grams of absolute ethanol and 34 grams of deionized water in advance w...

Embodiment 3

[0032] Take 30 grams of phenyltrimethoxysilane and 37.8 grams of ethyl orthosilicate, and inject them into three-necked flasks equipped with stirring and condensing equipment. Set the temperature of the water bath to 50°C, adjust the pH of the system to 3 with concentrated hydrochloric acid, slowly drop 17.7 g of deionized water into the three-necked flask under stirring, and complete the drop within 1 hour. After reacting for 3 hours, a white solid product was obtained, and the reaction was stopped. The white solid was filtered out using a Buchner funnel, washed with tetrahydrofuran five times, and finally the treated white solid was placed in a vacuum oven and dried at 100°C for 24 hours to obtain The white solid powder is double bond-containing cage silsesquioxane (POSS).

[0033] Take 60 grams of phenyltrimethoxysilane and 14.8 grams of dimethyldiethoxysilane and slowly drop them into a three-necked flask with 90 grams of absolute ethanol and 46.3 grams of deionized water in...

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PUM

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Abstract

The invention provides a preparation method for a single-component POSS / addition type silicon resin nanocomposite. The method comprises the following steps: double-bond-contained polyhedral oligomeric silsesquioxane (POSS) is synthesized, a silanol mixed solution containing different functional groups is prepared, and the double-bond-contained polyhedral oligomeric silsesquioxane (POSS) reacts with the silanol mixed solution to generate the target product namely single-component POSS / addition type silicon resin nanocomposite. The method comprises the following steps: (1), synthesizing the double-bond-contained polyhedral oligomeric silsesquioxane (POSS); (2) synthesizing silanol; (3), adding the double-bond-contained polyhedral oligomeric silsesquioxane (POSS) with different content, which is obtained through the step (1), into the silanol mixed solution obtained through the step (2), and reacting continuously for a period of time, so that a POSS / silicon resin nanocomposite prepolymer is obtained, then adding an end-capping agent, reducing pressure for removing low-molecular-weight by-products and absolute ethyl alcohol, and adding a cross-linking agent, a catalyst and an inhibitor auxiliary, so that the single-component POSS / addition type silicon resin nanocomposite is obtained.

Description

[0001] technical field [0002] The invention relates to a preparation method of a single-component POSS / addition type silicone resin nanocomposite material, which belongs to the technical field of high molecular photoelectric new materials. Background technique [0003] Polymer-based nanocomposites combine the advantages of each component, not only have excellent mechanical properties, but also have good thermal stability, toughness and optical properties. In addition, the controllable content of inorganic substances in polymer-based nanocomposites, light weight, and easy processing can effectively improve the physical and mechanical properties of polymers. [0004] Polyhedral oligomeric silsesquioxane (POSS) is a kind of substance containing (RSiO1.5)n structure, which is a research hotspot in recent years. The R substituents in the molecular structure are hydrogen, alkyl, alkenyl, aryl, Arylene groups and their derivative groups. According to different structures, silse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/20C08G77/06C08L83/07
Inventor 董晓娜陈衍华游胜勇谌开红金贞玉
Owner JIANGXI PROVINCE HANGYU NEW MATERIAL CO LTD
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