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Organic silicone elastomer synthesized by means of ultraviolet light catalysis hydrosilylation and preparation method thereof

A technology for catalyzing the addition of silicon and hydrogen by ultraviolet light, which is applied in the field of silicone elastomers, can solve the problems of large amount of catalyst used, harsh preparation conditions, yellowing of products, etc., and achieves simple preparation method, reduced production cost, and reduced yellowing. Effect

Active Publication Date: 2019-05-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for utilizing ultraviolet photocatalytic silicon elastomers to solve the defects and deficiencies such as harsh preparation conditions, large amount of catalyst used, high cost, low conversion rate and product yellowing in the existing preparation technology of organic silicon elastomers. Silicone Elastomers Synthesized by Hydrogen Addition Reaction

Method used

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  • Organic silicone elastomer synthesized by means of ultraviolet light catalysis hydrosilylation and preparation method thereof
  • Organic silicone elastomer synthesized by means of ultraviolet light catalysis hydrosilylation and preparation method thereof
  • Organic silicone elastomer synthesized by means of ultraviolet light catalysis hydrosilylation and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] The preparation of a silicone elastomer prepared by ultraviolet photocatalytic hydrogen silylation addition uses the following raw materials: 100g 5000cst (normal temperature) vinyl-terminated silicone oil, 10g 20cst hydrogen-containing silicone oil, stir and mix evenly, and then add 0.01g trimethyl (formazol Cyclopentadienyl) platinum (IV), 0.04g photosensitizer naphthalene, and 0.01g diethyl fumarate were stirred and mixed evenly, and then the above mixture was shaken out of bubbles by ultrasonic vibration, and then passed through a light intensity of 50mW / cm 2 UV radiation for 3 minutes to obtain the silicone elastomer.

Embodiment 2

[0031]The preparation of a silicone elastomer prepared by UV-catalyzed hydrosilicon addition adopts the following raw materials: 100g of 5000cst vinyl-terminated silicone oil, 10g of 20cst hydrogen-containing silicone oil, stir and mix evenly, and then add 0.01g of trimethyl (methyl Cyclopentadienyl) platinum (IV), 0.04g photosensitizer phenanthrene, and 0.01g diethyl fumarate were stirred and mixed evenly, and then the above-mentioned mixture was shaken out of bubbles by ultrasonic vibration, and then passed through a light intensity of 50mW / cm 2 UV radiation for 3 minutes to obtain the silicone elastomer.

Embodiment 3

[0033] The preparation of a silicone elastomer prepared by ultraviolet photocatalytic hydrosilicon addition adopts the following raw materials: 100g 5000cst vinyl-terminated silicone oil, 10g 20cst hydrogen-containing silicone oil, stir and mix evenly, and then add 0.01g trimethyl (methylcyclopentyl) Dienyl) platinum (IV), 0.04g photosensitizer perylene, and 0.01g diethyl fumarate were stirred and mixed evenly, and then the above-mentioned mixture was shaken out of bubbles by ultrasonic vibration, and then passed through a light intensity of 50mW / cm 2 UV radiation for 3 minutes to obtain the silicone elastomer.

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Abstract

The invention discloses a preparation method of the organic silicone elastomer synthesized by means of an ultraviolet light catalysis hydrosilylation. The ultraviolet light catalysis hydrosilylation is prepared from, by weight, 70-100 parts of VTBN silicone oil, 10-20 parts of containing hydrogen silicone oil, 0.004-0.025 part of a platinum photocatalyst, 0.04-0.5 part of a photosensitizer and 0.01-0.1 part of an inhibitor. The photosensitizer is added into the reaction system of the organic silicone elastomer prepared through the ultraviolet light catalysis hydrosilylation, the platinum photocatalyst and the photosensitizer are brought into play jointly, due to the added photosensitizer, the earlier stage rate of the platinum photocatalyst catalysis hydrosilylation can be increased or thefinal raw material conversion rate can be increased, the consumption of the platinum catalyst is reduced, and the production cost is lowered; by adopting a small amount of platinum catalyst, the xanthochromia condition can be effectively reduced; furthermore, the preparation method of the organic silicon elastomer is simple, no rigorous condition is needed, existing equipment does not need to beimproved, the method can be used for producing the organic silicon elastomer, and the improvement cost of a manufacturer is lowered.

Description

technical field [0001] The invention relates to the technical field of silicone elastomers, and more specifically, relates to a silicone elastomer synthesized by ultraviolet photocatalytic hydrosilylation reaction and a preparation method thereof. Background technique [0002] Silicone materials have been widely used in the fields of electronic transportation, construction, automobile and aerospace since their inception. Silicone polymers are usually obtained by curing at room temperature or at high temperature through the reaction between Si-H bonds and unsaturated bonds (hydrosilylation reaction) in the presence of platinum and other noble metal catalysts. This process has gradually become the preferred method for the synthesis of silicone functional compounds, and is also commonly used to prepare cross-linked polymers such as silicone elastomers. [0003] Compared with methods such as room temperature curing or high temperature curing, UV curing has the characteristics o...

Claims

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Application Information

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IPC IPC(8): C08G77/44
CPCC08L83/04C08G77/12C08G77/20C08L83/00C08K5/56C08K5/01
Inventor 刘晓暄席路向洪平刘珠苏嘉辉
Owner GUANGDONG UNIV OF TECH
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