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High-temperature-resistant phenyl silicone rubber thin film material and preparation method thereof

A technology of phenyl silicone rubber and film materials, which is applied in the field of preparation of organosilicon polymer film materials, can solve the problems of complex preparation process, high tear strength and high cost, and achieve complex process and high tear strength , the effect of simple steps

Inactive Publication Date: 2021-06-25
山东特龙谱新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature-resistant phenyl silicone rubber film material is prepared by using hydroxyl-terminated polydimethyldiphenylsiloxane as the main raw material, adopting room temperature vulcanization process and coating room temperature vulcanization to form a film. The high temperature resistant phenyl silicone rubber The film material not only has good high temperature resistance and room temperature vulcanization performance, but also has high hardness, high tear strength, high elongation, and excellent mechanical properties. At the same time, the invention solves the problem of complex preparation process and high cost of such materials. technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The second aspect of the present invention provides a method for preparing the above-mentioned high-temperature-resistant phenyl silicone rubber film material, which specifically includes:

[0028] (1) Add hydroxyl-terminated polydimethyldiphenylsiloxane, plasticizer, and crosslinking agent to a planetary mixer at room temperature and stir, then vacuumize and stir at high speed for 30-60 minutes, and the vacuum degree reaches - 0.09MPa and above, speed 20-50r / min;

[0029] (2) Add hydrophobic fumed silica to the mixture obtained in step (1), stir at high speed until the hydrophobic fumed silica is evenly dispersed, then decompress and evacuate, and stir at high speed for 20-60 minutes;

[0030] (3) Add a titanate catalyst, an organotin catalyst, and a silane coupling agent to the mixture obtained in step (2), and stir at a high speed for 20-60 minutes under reduced pressure and vacuum;

[0031] (4) Discharge, apply the rubber material on a clean glass plate to make an ...

Embodiment 1

[0035](1) Mix 33 parts of hydroxyl-terminated polydimethyldiphenylsiloxane of 8000mPa·s with 67 parts of hydroxyl-terminated polydimethyldiphenylsiloxane of 15000mPa·s, with a viscosity of 150mPa·s Add 20 parts of dimethyl silicone oil, 17.5 parts of ethyl orthosilicate, 35 parts of methyltrimethoxysilane, and 17.5 parts of vinyltrimethoxysilane into the planetary mixer, vacuumize and stir at high speed for 50 minutes, and the vacuum degree reaches -0.09MPa and above, the speed is 40r / min.

[0036] (2) Add 12 parts of hydrophobic fumed silica with a specific surface area of ​​200㎡ / g to the mixture obtained in step (1), stir at high speed until the hydrophobic fumed silica is evenly dispersed, then vacuumize and stir at high speed for 40 minute.

[0037] (3) Add another 8 parts to the mixture obtained in step (2) 9000 and Kerry chemical transparent titanium complex compound, 5 parts of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 0.1 part of dibutyltin dilaurate, vacuum u...

Embodiment 2

[0040] As described in Example 1, the difference is that the hydroxyl-terminated polydimethyldiphenylsiloxane of 8000mPa·s and the hydroxyl-terminated polydimethyldiphenylsiloxane of 15000mPa·s are mixed in 45 parts Added with 55 copies. The preparation process of the sizing material and the film is the same as in Example 1. After testing, the performance indicators of the film are as follows: the surface of the film is smooth and clean, the thickness is 1.0mm, translucent, the elongation at break is 330%, the tensile strength is 4.5MPa, the tear strength is 15.2kN / m, and the hardness is 38 (Shao Seoul A).

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Abstract

The invention belongs to the technical field of preparation of organic silicon polymer film materials, and particularly relates to a high-temperature-resistant phenyl silicone rubber film material and a preparation method thereof. The high-temperature-resistant phenyl silicone rubber thin film material comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethyldiphenyl siloxane, 10-60 parts of hydrophobic fumed silica, 5-20 parts of a plasticizer, 30-80 parts of a cross-linking agent, 5-50 parts of a titanate catalyst, 0.1-5 parts of an organic tin catalyst and 5-15 parts of a silane coupling agent. The material is prepared by taking hydroxyl-terminated polydimethyldiphenylsiloxane as a main raw material and adopting a room-temperature vulcanization process and coating room-temperature vulcanization film forming, not only has good high-temperature resistance and room-temperature vulcanization forming performance, but also has high hardness, high tear strength, high elongation and excellent mechanical properties, and meanwhile, the material solves the technical problems of complex preparation process, high cost and the like of such materials.

Description

technical field [0001] The invention belongs to the technical field of organosilicon polymer film material preparation, and in particular relates to a high-temperature-resistant phenyl silicone rubber film material and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] High temperature resistant film materials are mainly used for surface protection of various stainless steel materials, so that they will not be damaged during transportation, storage, processing and installation. At present, it is widely used in the surface protection of PC, PMMA, metal and glass related products; as a surface protection film in the production of mobile phone lens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K13/04C08K7/26C08K5/57C08J5/18
CPCC08J5/18C08J2383/04C08J2483/04C08K5/57C08K7/26C08K13/04C08K2201/006
Inventor 叶世明张迪吕宁张庆法毕旺杰
Owner 山东特龙谱新材料有限公司
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