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Synthesis method of high molecular weight polysiloxane containing nitrile group and vinyl at the same time and preparation method of addition type heat vulcanized nitrile silicone rubber

A polysiloxane, high molecular weight technology, applied in the field of organosilicon polymer synthesis, can solve the problems of less nitrile silicone rubber, insufficient heat resistance, and difficult vulcanization of mixed rubber.

Active Publication Date: 2016-06-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymerization process reacts violently and has poor controllability
Moreover, nitrile silicone rubber has serious shortcomings in processing and performance, mainly because it absorbs moisture during mixing, and increases with the increase of nitrile unit content, the mixed rubber after water absorption is difficult to vulcanize, and the vulcanization time is long and insufficient heat resistance, thus limiting its application and development
Nitrile silicone rubber has excellent performance in cold resistance, oil resistance, solvent resistance, corrosion resistance, etc., and has broad application prospects, but there are very few reports on the preparation of nitrile silicone rubber recently.

Method used

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  • Synthesis method of high molecular weight polysiloxane containing nitrile group and vinyl at the same time and preparation method of addition type heat vulcanized nitrile silicone rubber
  • Synthesis method of high molecular weight polysiloxane containing nitrile group and vinyl at the same time and preparation method of addition type heat vulcanized nitrile silicone rubber

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Embodiment Construction

[0011] Technical scheme of the present invention is as follows:

[0012] A kind of synthetic method of the high molecular weight polysiloxane containing nitrile group and vinyl simultaneously, comprises steps as follows:

[0013] Mix the high molecular weight polysiloxane containing both amino group and vinyl group with the unsaturated compound containing nitrile group under the condition of using solvent or without solvent, and pass the amino group under the condition of using catalyst or without using any catalyst. The reaction with the double bond in the unsaturated compound introduces the nitrile group into the high molecular weight polysiloxane molecule containing vinyl, and prepares the high molecular weight polysiloxane containing both nitrile group and vinyl group.

[0014] The synthetic equation of high molecular weight nitrile group polysiloxane of the present invention is:

[0015]

[0016] Among them, R 1 -R 7 are various organic groups, and n and m are integ...

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Abstract

The invention relates to a synthesis method of high molecular weight polysiloxane containing nitrile group and vinyl at the same time and a preparation method of addition type heat vulcanized nitrile silicone rubber. The high molecular weight polysiloxane containing nitrile group and vinyl at the same time is prepared by performing amino group and double bond addition reaction on polysiloxane containing amino group and vinyl at the same time and compound containing unsaturated bonds and nitrile group. The addition type heat vulcanized nitrile silicone rubber is prepared through the synthesized high molecular weight polysiloxane containing nitrile group and vinyl at the same time. The synthesis method is simple and controllable, and high in synthesis efficiency; as the synthesized polysiloxane containing nitrile group and vinyl at the same time contains nitrile groups, the polarity and solubility parameters of polysiloxane are changed, and the prepared addition type heat vulcanized nitrile silicone rubber can have the performance of solvent oil resistance, and can be applied to various oil resistance and low temperature resistance places.

Description

technical field [0001] The invention relates to the synthesis of high-molecular-weight polysiloxane containing both nitrile groups and vinyl groups and the preparation method of addition-type thermally vulcanized nitrile silicone rubber, which belongs to the field of organosilicon polymer synthesis. Background technique [0002] Silicone polymer materials have many superior properties, such as high and low temperature resistance, weather resistance, aging resistance, electrical insulation, etc., and are widely used in aerospace, electronics, light industry, textiles, machinery, construction, agriculture, and transportation. It is closely related to people's daily life and has become an important polymer material in the national economy. Silicone rubber is an important organosilicon polymer material, and its application products mainly include molded products (such as various rubber sheets, gaskets, gaskets, films, rubber rollers, keys of electronic appliances, and various mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/388C08L83/08C08L83/05C08K9/06C08K3/36C08K3/04C08K3/22C08K3/26
CPCC08G77/388C08K2201/014C08L83/08C08L2205/02C08L83/04C08K9/06C08K3/36C08K3/04C08K2003/2224C08K2003/265
Inventor 卢海峰张悦冯圣玉马德鹏唐波刘营营乔瑞景
Owner SHANDONG UNIV
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