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Hydrosilylation type silicone resin high temperature catalytic inhibition system and its preparation method and application

A technology of high-temperature catalysis and silicone resin, which is applied in the field of high-temperature catalysis inhibition system, can solve the problems of limited application, exposure of catalyst active components, difficulty of crushing coated catalysts, etc., and achieve the effect of reducing the possibility of internal stress

Active Publication Date: 2021-01-15
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coated catalyst uses soluble silicone resin as the coating material and is applied to the silica gel system. The coating of the catalyst is easily "melted" by the base rubber system, which reduces the stability of the silica gel system. On the other hand, it is prepared by a solution method Coated catalysts have defects such as difficulty in pulverization, uneven catalyst particle size, and "bare" catalyst active components, which limit the application of this type of catalyst system in addition-type silica gel systems

Method used

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  • Hydrosilylation type silicone resin high temperature catalytic inhibition system and its preparation method and application
  • Hydrosilylation type silicone resin high temperature catalytic inhibition system and its preparation method and application
  • Hydrosilylation type silicone resin high temperature catalytic inhibition system and its preparation method and application

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Embodiment 1

[0035] The invention relates to a method for preparing a hydrosilylation-type silicone resin high-temperature catalytic inhibitor system, including the preparation of an acetylenic alcohol-modified silane inhibitor and the preparation of a silicone-resin-coated platinum catalyst. The mass ratio of the silicone resin-coated platinum catalyst and the acetylenic alcohol-modified silane inhibitor is 1:1.

[0036] (1) The preparation method of acetylenic alcohol modified silane inhibitor:

[0037] a. In 80g toluene, add 25g 2-methyl-3-butyn-2-ol, 20g pyridine, and start stirring;

[0038] b. Slowly drop 15 g of phenyltrichlorosilane into the above solution, and complete the dropwise addition within 3 hours. After the dropwise addition, the temperature was raised to 120° C., and the stirring reaction was continued for 4 hours under reflux;

[0039] c. the above reactant is cooled to room temperature, and the solid generated by the reaction is filtered out with filter paper;

[00...

Embodiment 2

[0047] The invention relates to a method for preparing a hydrosilylation-type silicone resin high-temperature catalytic inhibitor system, including the preparation of an acetylenic alcohol-modified silane inhibitor and the preparation of a silicone-resin-coated platinum catalyst. The mass ratio of the silicone resin-coated platinum catalyst and the acetylenic alcohol-modified silane inhibitor is 1:1.

[0048] (1) The preparation method of acetylenic alcohol modified silane inhibitor:

[0049] a. In 80g toluene, add 5g 2-methyl-3-butyn-2-ol, 15g 2-phenyl-3-butyn-2-ol, 30g pyridine, and start stirring;

[0050] b. Slowly drop 27 g of phenyltrichlorosilane into the above solution, and complete the dropwise addition within 3 hours. After the dropwise addition, the temperature was raised to 120° C., and the stirring reaction was continued for 4 hours under reflux;

[0051] c. the above reactant is cooled to room temperature, and the solid generated by the reaction is filtered out...

Embodiment 3

[0059] The invention relates to a method for preparing a hydrosilylation-type silicone resin high-temperature catalytic inhibitor system, including the preparation of an acetylenic alcohol-modified silane inhibitor and the preparation of a silicone-resin-coated platinum catalyst. The mass ratio of the silicone resin-coated platinum catalyst and the acetylenic alcohol-modified silane inhibitor is 1:1.

[0060] (1) The preparation method of acetylenic alcohol modified silane inhibitor:

[0061] a. In 100g toluene, add 20g 2-methyl-3-butyn-2-ol, 5g 2-phenyl-3-butyn-2-ol, 10g3-methyl-4-pentyn-3- Alcohol, 30g pyridine, start stirring;

[0062] b. Slowly drop 31 g of phenyltrichlorosilane into the above solution, and complete the dropwise addition within 3 hours. After the dropwise addition, the temperature was raised to 120° C., and the stirring reaction was continued for 4 hours under reflux;

[0063] c. the above reactant is cooled to room temperature, and the solid generated ...

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Abstract

The invention relates to a hydrosilylation type high-temperature silicon resin catalytic inhibition system as well as a preparation method and application thereof. The system comprises two parts, namely a silicon resin coated platinum catalyst and an alkynol modified silane inhibitor, wherein the silicon resin coated platinum catalyst refers to core-shell microspheres having platinum catalysis hydrosilylation activity, and the core-shell microspheres are formed by taking a platinum complex formed by taking vinyl alkoxylsilane as a ligand as the core and active ingredient and taking a cross-linked silicone resin as a coating layer; and the alkynol modified silane inhibitor is phenylsilane modified by alkynyl-terminated alkynol. According to the system disclosed by the invention, long-term stable storage of the one-component hydrosilylation type resins can be maintained under normal temperature conditions, and the silicon resins can be gradually catalyzed to carry out a cross-linking reaction under the high-temperature condition.

Description

technical field [0001] The invention relates to a high-temperature catalytic inhibition system, which belongs to the technical field of preparation of hydrosilylation silicone resin. Background technique [0002] Due to the high-efficiency catalytic effect of its own catalyst system, traditional addition-type silicone resins often need to be in the form of two components to avoid rapid and violent cross-linking reactions when vinyl-containing silicone resins and hydrogen-containing components are fully mixed. With the continuous expansion of the hydrosilylation silicone resin system in the actual application field, the two-component system is limited by the actual conditions due to the measurement accuracy and the manufacturability of rubber mixing. The market urgently needs the one-component hydrosilylation system to facilitate Silicone application. For example, in the field of high-temperature insulating impregnating resins, it is required that the resin system can be sto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/06C08G77/08C08G77/20C08G77/44
CPCC08G77/06C08G77/08C08G77/20C08G77/44C08G77/80
Inventor 李冰李金辉赵宁于一涛彭丹张硕张方志王峰牟秋红
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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