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Preparation method of anti-poisoning silicon rubber

A silicone rubber and anti-poisoning technology, which is applied in the field of preparation of anti-poisoning silicone rubber, and can solve the problems that silicone rubber cannot be vulcanized and catalysts are easily poisoned.

Inactive Publication Date: 2010-09-08
TONGJI UNIV
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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 aimed at the current addition-type silicone rubber when in contact with organic substances such as N, P, S and other elements or ionic compounds of heavy metals such as Sn, Pb, Hg, Bi, As, and unsaturated organic substances containing alkyne groups. The problem that the contained catalyst is easily poisoned so that the silicone rubber cannot be vulcanized provides a method for preparing an anti-poisoning silicone rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 30 parts of calcium carbonate in a planetary mixer, dehydrate under a vacuum of 40KPa, heat up to 150°C, stir for 300min, cool down to 50°C, and add 14.9 parts of White carbon black, stir for 80min, add 3 parts of carbon black, add 0.1 part of high activity catalyst, add 2 parts of anti-poisoning agent. Stir evenly, cool down to room temperature, and defoam for 40 minutes under a vacuum of 40KPa to prepare component A;

[0019] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 45 parts of calcium carbonate evenly, raise the temperature to 150°C, stir for 300min, cool down to 50°C, add 5 parts of hydrogen-containing silicone oil, and stir evenly under a vacuum of 40KPa. To obtain component B, mix A and B components uniformly at room temperature 1:1 to obtain an anti-poisoning type silicone rubber. The product parameters of the gained silicone rubber are as follows, surface dry time (r...

Embodiment 2

[0021] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 30 parts of MgO in a planetary mixer, dehydrate under a vacuum of 40KPa, heat up to 150°C, stir for 300min, cool down to 50°C, add 14.8 parts of white Carbon black, stir for 80min, add 3 parts of carbon black, add 0.2 parts of high activity catalyst, and add 2 parts of anti-poisoning agent. Stir evenly, cool down to room temperature, and defoam for 40 minutes under a vacuum of 40KPa to prepare component A;

[0022] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 45 parts of MgO evenly, raise the temperature to 150°C, stir for 300min, cool down to 50°C, add 5 parts of hydrogen-containing silicone oil, and stir evenly under a vacuum of 40KPa to prepare Component B, mix components A and B uniformly at room temperature 1:1 to obtain an anti-poisoning silicone rubber. The product parameters of the obtained silicone rubber are as follows: flame retardant grade UL94-V0, surface dry time (...

Embodiment 3

[0024] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 20 parts of α-Al 2 o 3 Mix evenly in a planetary mixer, add 10 parts of AlN, stir evenly, dehydrate under a vacuum of 40KPa, heat up to 150°C, stir for 300min, cool down to 50°C, add 14.9 parts of white carbon black, stir for 80min, add 3 parts of carbon Black, add 0.1 part of high activity catalyst, add 2 parts of anti-poisoning agent. Stir evenly, cool down to room temperature, and defoam for 40 minutes under a vacuum of 40KPa to prepare component A;

[0025] Mix 50 parts of vinyl silicone oil with a viscosity of 2000mPa·s and 25 parts of α-Al 2 o 3 Mix evenly, continue to add 10 parts of AlN and 10 parts of white carbon black, stir evenly, raise the temperature to 150°C, stir for 300 minutes, cool down to 50°C, add 5 parts of hydrogen-containing silicone oil, and stir evenly under a vacuum of 40KPa to obtain component B. Mix components A and B uniformly at room temperature 1:1 to obtain an anti-...

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Abstract

The invention belongs to the chemical technique field of organic silicon, and particularly relates to a preparation method of an anti-poisoning silicon rubber. The anti-poisoning silicon rubber is a bi-component addition room-temperature cured silicon rubber, and comprises a component A and a component B, wherein the component A comprises 10-80% of vinyl silicone oil, 5-50% of filler, 0.01-1% of high-activity catalyst, and balance of anti-poisoning agent, and the total weight of the component A is 100%; and the component B comprises 10-80% of vinyl silicone oil, 5-50% of filler and balance of hydrogenous silicone oil, and the total weight of the component B is 100%.The preparation method comprises the following steps of: uniformly mixing the component A and the component B based on a ratio of 1:1 at room temperature, and curing at room temperature. The product prepared by the method can effectively inhibit the catalyst poisoning phenomenon caused by stanniferous and plumbiferous metal ion compounds and sulphureous and nitrogenous organic compounds.

Description

technical field [0001] The invention belongs to the technical field of organosilicon chemical industry, and in particular relates to a preparation method of anti-poisoning silicone rubber. Background technique [0002] Silicone rubber is one of the most important products among silicone polymers. Before vulcanization, it is a linear polysiloxane with high molar mass, and after vulcanization, it is a network-like elastomer. Since its main chain is composed of Si-O-Si bonds, silicone rubber has excellent weather resistance, water resistance, aging resistance and durability. Due to the excellent comprehensive performance of silicone rubber products, they have been widely used in aerospace, electrical, electronic, chemical, instrumentation, machinery and other industries, as well as in various fields of medical care and daily life. The outstanding performance of silicone rubber is that it can be used for a long time at -60°C (or lower temperature) to +250°C (or higher temperat...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/02C08K3/22C08K3/34C08K3/04C08K3/26C08K3/08C08K3/36C08K3/38C08K3/28C08K5/057C08K5/07C08J3/24
Inventor 任天斌钟震蒋志恒韩宇黄超
Owner TONGJI UNIV
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