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Preparation method of solid silicon rubber composition

A technology of rubber composition and solid silicon, which is applied in the field of preparation of solid silicone rubber composition, can solve the problems of inability to obtain low permanent compression deformation and high strength, and limited reinforcing properties of silica

Inactive Publication Date: 2015-09-30
SHENZHEN CITY SQUARE SILICONE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electrical properties, aging resistance, and oil resistance of silicone rubber itself are very good, special fillers must be added to achieve permanent compression deformation.
It is reported that in order to reduce the permanent compression deformation, the white carbon black of the precipitation method is used as the filler, but the reinforcement of the precipitation method is limited, and it is impossible to obtain low permanent compression deformation while taking into account high strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The embodiment of the present invention provides a method for preparing a solid silicone rubber composition, which comprises the following steps:

[0015] Prepare base rubber: mix methyl vinyl raw rubber, inorganic filler and structural control agent according to the mass ratio of 100:(1~80):(1~30), heat treat 0.5~6 pieces at 100℃~150℃ hour, be cooled to room temperature to obtain base glue;

[0016] Preparation of material A: Take 100 parts by mass of base rubber, add 0.01-10 parts by mass of catalyst, 0.01-10 parts by mass of compression set modifier, and mix evenly to obtain material A;

[0017] Preparation of material B: Take 100 parts by mass of base rubber, add 0.01-20 parts by mass of crosslinking agent, 0.001-2 parts by mass of inhibitor, and 0.1-20 parts by mass of silicone rubber stabilizer, and mix evenly to obtain Material B;

[0018] The material A and the material B are vulcanized at 100° C. to 200° C. for 5 to 20 minutes according to a mass ratio of 1:1...

Embodiment 1

[0148] Prepare the base

[0149] 200 parts by mass of methyl vinyl raw rubber, 120 parts by mass of fumed silica powder, and 40 parts by mass of dimethyldialkoxysilane were heat-treated at 150°C for 10 hours, and cooled to room temperature to obtain base glue.

[0150] Preparation of A13 and B13 materials

[0151] Preparation of A13 material

[0152] Take the above 100 parts by mass of rubber base, add 0.6 parts by mass of a catalyst with a platinum metal content of 5000 ppm, and 0.5 parts by mass of a compression set control agent, and mix uniformly to prepare A13 material.

[0153] Preparation of B13 material

[0154] Take the above 100 parts by mass of base rubber, add 10 parts by mass of crosslinking agent, 0.06 parts by mass of inhibitor, and 2 parts by mass of 1.5 micron silicone rubber stabilizer, and mix uniformly to prepare B13 material.

[0155] Take 100 parts by mass of A13 material and 100 parts by mass of B13 material, mix them evenly, mold them at 140°C for 1...

Embodiment 2

[0157] Prepare the base

[0158] 200 parts by mass of methyl vinyl raw rubber, 120 parts by mass of fumed silica powder, and 40 parts by mass of dimethyldialkoxysilane were heat-treated at 150°C for 10 hours, and cooled to room temperature to obtain base glue.

[0159] Preparation of A14 and B14 materials

[0160] Preparation of A14 material

[0161] Take the above 100 parts by mass of rubber base, add 0.6 parts by mass of a catalyst with a platinum metal content of 5000 ppm, and 1 part by mass of a compression set control agent, and mix uniformly to prepare A14 material.

[0162] Preparation of B14 material

[0163] Take the above 100 parts by mass of base rubber, add 10 parts by mass of crosslinking agent; 0.06 parts by mass of inhibitor, 2 parts by mass of 1.5 micron silicone rubber stabilizer, and knead evenly to prepare B14 material.

[0164] Take 100 parts by mass of A14 material and 100 parts by mass of B14 material, mix them evenly, mold them at 140°C for 10 minute...

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Abstract

The invention relates to a preparation method of a solid silicon rubber composition. The preparation method comprises the following steps: preparing base rubber, namely mixing methyl vinyl crude rubber, inorganic filler and a structural control agent according to a mass ratio of 100:(1-80):(1-30), performing heat treatment for 0.5-6 hours at 100-150 DEG C, and cooling to the room temperature to obtain the base rubber; preparing a material A, namely taking 100 mass parts of the base rubber, adding 0.1-10 mass parts of a catalyst and 0.01-10 mass parts of a compression deformation improver, and mixing uniformly to obtain the material A; preparing a material B, namely taking 100 mass parts of the base rubber, adding 0.01-10 mass parts of a crosslinking agent, 0.002-2 mass parts of an inhibitor and 0.1-20 mass parts of a silicon rubber stabilizer, and mixing uniformly to obtain the material B; and vulcanizing the material A and the material B for 5-20 minutes at 100-200 DEG C according to a mass ratio of 1:1, and vulcanizing for the second time to obtain the solid silicon rubber composition.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a preparation method of a solid silicone rubber composition. Background technique [0002] In recent years, with the improvement of global living standards, people have higher and higher requirements for consumer goods, especially for the safety of vehicles. The competition among auto companies will become more and more fierce, and the technical requirements will become higher and higher. At the same time, higher requirements will be put forward for auto parts. [0003] Automobile spark plug, commonly known as the burner, its function is to discharge the pulsed high-voltage electricity sent by the high-voltage wire (burner wire), break down the air between the two electrodes of the spark plug, and generate an electric spark to ignite the mixed gas in the cylinder. At the connection between the high-voltage ignition coil and the spark plug, in the process of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K13/02C08K3/36C08K5/5419C08K5/14C08K3/22C08J3/24
Inventor 李彦民杨志昂
Owner SHENZHEN CITY SQUARE SILICONE MATERIALS