Antistatic silicon rubber and preparation method thereof

A silicone rubber and antistatic technology, applied in the field of silicone rubber and its preparation, can solve the problems of poor compatibility, difficult to last antistatic effect, uneven dispersion of antistatic agents, etc., and achieve good antistatic performance and stable antistatic performance. Long-lasting, excellent antistatic properties

Active Publication Date: 2015-11-25
SHENZHEN SELEN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problems of poor compatibility between the antistatic agent and the silicone rubber in the antistatic silicone rubber prepared by the prior art, uneven dispersion of the antistatic agent, and difficulty in lasting the antistatic effect, and provides a stable and long-lasting antistatic silicone rubber with excellent antistatic performance. Antistatic silicone rubber and its preparation method, the prepared silicone rubber also has the characteristics of excellent antistatic performance at low temperature or low humidity, this silicone rubber is suitable for the automotive industry, aviation and aerospace, cables and accessories, electronics industry, Semiconductor and toy manufacturing and other fields that have antistatic and dustproof requirements on the surface of the product

Method used

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  • Antistatic silicon rubber and preparation method thereof
  • Antistatic silicon rubber and preparation method thereof
  • Antistatic silicon rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 100 parts of methyl vinyl silicone rubber raw rubber, 7 parts of 1-vinyl-3-propyl imidazolium chloride salt polymer, 40 parts of fumed white carbon black, 20 parts of calcium silicate, 20 parts of hexamethyldisilazane parts, platinum catalyst 3 parts.

[0053] The preparation method of the antistatic silicone rubber of the present embodiment comprises the following steps:

[0054] (1) 1-vinyl-3-propylimidazolium chloride salt polymer is dissolved in caprolactone to make antistatic agent mother liquor;

[0055] (2) Preparation of rubber compound: the antistatic agent mother liquor prepared in methyl vinyl silicone rubber raw rubber, fumed silica, calcium silicate, hexamethyldisilazane and step (1) is added to In a vacuum kneader, knead at room temperature for 0.5h, then raise the temperature to 150°C, knead in a vacuum for 4h, then add a platinum catalyst to the mixed silicone rubber and knead evenly on an open mill to obtain a silicone rubber compound ;

[0056] (3) ...

Embodiment 2

[0065] 100 parts of methyl vinyl silicone rubber raw rubber, 7 parts of 1-vinyl-3-methylimidazolium dicyanamide salt polymer, 20 parts of precipitated white carbon black, 5 parts of diphenylsilanediol, 2,5 1.8 parts of dimethyl-2,5-bis(t-butylperoxy)hexane.

[0066] The steps of the preparation method of the antistatic silicone rubber in this embodiment are the same as those in Example 1, and the raw materials and dosage are changed to the raw materials and dosage of the above formula.

Embodiment 3

[0071] 100 parts of dimethyl silicone rubber raw rubber, 4 parts of 1-vinyl-3-ethylimidazole hexafluorophosphate polymer, 20 parts of fumed white carbon black, 8 parts of cyclic trisilazane, bis( 2,4-dichlorobenzoyl) 0.5 parts, zinc stearate 0.1 parts.

[0072] The preparation method of the antistatic silicone rubber of the present embodiment comprises the following steps:

[0073] (1) 1-vinyl-3-propylimidazolium chloride salt polymer is dissolved in propylene carbonate to make antistatic agent mother liquor;

[0074] (2) Preparation of rubber compound: the antistatic agent mother liquor prepared in dimethyl silicone rubber, fumed silica, cyclic trisilazane, zinc stearate and step (1) is added to the vacuum In the kneader, knead at room temperature for 0.5h, then raise the temperature to 160°C, knead in a vacuum for 2h, then add bis(2,4-dichlorobenzoyl) vulcanizing agent to the above-mentioned mixed silicone rubber Mix evenly on the open mill to obtain silicone rubber compou...

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Abstract

The invention discloses antistatic silicon rubber mainly prepared from raw materials comprising the following components: (a) 100 parts of raw silicon rubber, (b) 20-60 parts of packing, (c) 0.5-3 parts of a vulcanizing agent, (d) 5-20 parts of a structure control agent, (e) 2-7 parts of an antistatic agent, (f) 0-0.5 part of a release agent and (g) 0-2 parts of a coupling agent. The invention also provides a preparation method of the antistatic silicon rubber. The preparation method comprises the steps of mixing the raw silicon rubber and an adjuvant; then, carrying out extrusion molding or compression molding; and next, vulcanizing and shaping. The silicon rubber disclosed by the invention overcomes the defects that the compatibility of the antistatic agent and the silicon rubber in the existing silicon rubber is poor and the antistatic effect is difficultly kept long; and the preparation method of the antistatic silicon rubber is also simple and capable of easily realizing industrialization.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber is an excellent insulating material. During use, it is easy to accumulate charges on the surface to generate static electricity, which makes the silicone rubber material easy to absorb dust and bring safety hazards in some occasions. In order to improve the safety and reliability of silicone rubber materials during use, antistatic treatment is required on the premise of ensuring that their mechanical properties meet the requirements of use. Usually, the surface coating antistatic agent method and the method of adding conductive fillers are used. Although the method of surface coating antistatic agent has obvious effects, the antistatic performance is difficult to last, and the antistatic agent is easy to fall off or lose antistatic properties during use. The method of ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/08C08L39/04C08K13/02C08K3/36C08K3/34C08K5/544
Inventor 郭辉胡树
Owner SHENZHEN SELEN SCI & TECH CO LTD
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