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Preparation and application of organo-siloxane capable of being subjected to direct thermal curing

An organosiloxane and thermal curing technology, which is applied in organic chemistry, silicon organic compounds, chemical instruments and methods, etc., can solve the problems of thermal performance improvement and inefficient reaction process, etc.

Active Publication Date: 2018-07-20
SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, the preparation of these above-mentioned siloxane monomers or polymers is still insufficient: the reaction process is not efficient enough, and the methylene groups produced by hydrosilylation will be detrimental to the improvement of thermal properties.

Method used

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  • Preparation and application of organo-siloxane capable of being subjected to direct thermal curing
  • Preparation and application of organo-siloxane capable of being subjected to direct thermal curing
  • Preparation and application of organo-siloxane capable of being subjected to direct thermal curing

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preparation example Construction

[0157] (4) The preparation method of the present invention is simple, requires low equipment, and is suitable for industrial production.

[0158] (5) The organosiloxane provided by the present invention can be used to prepare cured products with good electrical properties, heat resistance and mechanical properties, and its thermal stability has been significantly improved.

Embodiment 1 4

[0160] Embodiment 1 Preparation of tetraaryl trifluorovinyl ether substituted organosiloxane

[0161]

[0162] Under the protection of argon, to the B (C 6 f 5 ) 3 (102mg, 0.2mmol) and tetraethoxysilane (2.02g, 9.69mmol) in 10mL of toluene solution was added dropwise 4-trifluorovinyloxyphenyldimethylsilane (8.99g, 38.76mmol), the dropwise After stirring for 8 hours, the reaction was stopped, and the low boiling point solvent was removed by rotary evaporation, and the crude product was subjected to silica gel column chromatography to obtain 7.20 g of a colorless transparent liquid with a yield of 73%.

Embodiment 2 3

[0163] Example 2 Preparation of organosiloxane substituted by triaryl trifluorovinyl ether

[0164]

[0165] Under the protection of argon, to the B (C 6 f 5 ) 3 (67mg, 0.13mmol) and perfluorooctyltriethoxysilane (5.32g, 8.7mmol) in 10mL of toluene solution was added dropwise 4-trifluorovinyloxyphenyldimethylsilane (6.06g, 26.1mmol) , the reaction was stopped after the drop was completed and stirred at room temperature for 8 hours. After the low boiling point solvent was removed by rotary evaporation, the crude product was subjected to silica gel column chromatography to obtain 6.50 g of a colorless transparent liquid with a yield of 61.4%.

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Abstract

The invention provides preparation and application of a type of organo-siloxane capable of being subjected to direct thermal curing. Specifically, the invention provides a type of organo-siloxane containing thermal curing groups. The organo-siloxane is prepared by steps: linking an aryl substituted group containing the thermal curing group and a siloxane monomer or polysiloxane by virtue of -Si-O-Si- bond, thereby obtaining a series of novel functional siloxane or polysiloxane matrix resins. The organo-siloxane disclosed by the invention can be subjected to cross-linked polymerization by virtue of heating, is simple and high-efficiency in preparation method, is suitable to serve as an insulation coating layer and a packaging material for electronic components in the electronic and electricindustry, and can also serve as a cross-linking agent of silicone rubber or silicon resin.

Description

technical field [0001] The invention belongs to the field of manufacturing high-performance polymer monomers, and in particular relates to a new type of organosiloxane containing thermosetting groups and a preparation method thereof. Background technique [0002] Organosiloxane polymers are widely used in the fields of electronics, electronics, and electronic packaging due to their high and low temperature resistance, ease of processing, insulating properties, and optical properties. Generally, organosiloxane polymers are prepared in the following ways: one is to hydrolyze and condense organosiloxane monomers under acidic or alkaline conditions; the other is to use Pt-catalyzed hydrosilylation; Obtained by a chain reaction initiated by some other initiator. For example: Dow Corning's Sylgard 184 is a silicone rubber obtained through a hydrosilylation reaction; and a typical polydimethyl linear siloxane is obtained through hydrolysis and condensation. These preparation meth...

Claims

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Application Information

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IPC IPC(8): C08G77/04C08G77/38C08L83/04C07F7/08C07F7/21
CPCC07F7/083C07F7/21C08G77/045C08G77/38C08L83/04
Inventor 房强王佳佳金凯凯孙晶周俊峰
Owner SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
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