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Low compression set organosilicon rubber compound method

A permanent deformation and silicone technology, applied in the direction of products, reagents, educts, etc., can solve the problems of easy sealing leakage, large deformation, large product deformation, etc., and achieve good sealing effect, long use time and low deformation rate.

Pending Publication Date: 2022-08-02
禹城市必拓有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The products made of the existing silicone rubber compound have large deformation, which leads to large deformation of the product when sealing equipment or containers, and it is easy to seal and leak in a short time, especially in the case of high temperature sealing

Method used

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  • Low compression set organosilicon rubber compound method
  • Low compression set organosilicon rubber compound method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment of the low compression set silicone compounding method includes the following steps:

[0043] Step 1: Preparation:

[0044] Prepare A-016 and A-023, the weight ratio is 1:1, turn on the power of the kneader, open the upper cover of the kneader, and rotate the cylinder of the kneader to a suitable position;

[0045] Step 2: Put in the raw materials:

[0046] A-016 and A-023 were put into the kneader, and alumina was added for kneading, and the kneading time was 1h;

[0047] Step 3: Add excipient S1:

[0048] When the kneading time reaches 10min, B-A200 with a weight ratio of 1:3 to the raw material is added to the kneader, and C-209 with a weight ratio of 17:750 to the raw material is added at the same time;

[0049] Step 4: Add auxiliary material S2:

[0050] When the kneading time reaches 20min, add B-A200 with a weight ratio of 1:5 to the raw material in the kneader, and simultaneously add C-209 with a weight ratio of 1:50 to the raw material;

[...

Embodiment 2

[0068] The difference between this embodiment and the first embodiment is that,

[0069] Step 1: Preparation:

[0070] Prepare A-016 and A-023, the weight ratio is 1:0.5, turn on the power of the kneader, open the upper cover of the kneader, and rotate the cylinder of the kneader to a suitable position.

[0071] The rest are the same as in Example 1.

Embodiment 3

[0073] The difference between this embodiment and the first embodiment is that,

[0074] Step 1: Preparation:

[0075] Prepare A-016 and A-023, the weight ratio is 1:2, turn on the power of the kneader, open the upper cover of the kneader, and rotate the cylinder of the kneader to a suitable position.

[0076] The rest are the same as in Example 1.

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Abstract

The invention discloses a low compression set organosilicon rubber compound method, and relates to the technical field of organosilicon rubber compounds. According to the invention, the ratio is improved, that is, the weight ratio of methyl vinyl silicone rubber with the vinyl content of 0.16% to methyl vinyl silicone rubber with the vinyl content of 0.23% is 1: 1, the weight ratio of aluminum oxide to A-016 and A-023 is 1: 0.003%, and silicon dioxide and dimethyl hydroxyl silicone oil with different ratios are added in different kneading periods, so that the rubber composition is prepared. Therefore, a finally produced product is low in deformation rate and high in tensile strength, compression set can be effectively improved, and a sealing element manufactured by the product is better in sealing effect on a sealer and longer in service time.

Description

technical field [0001] The invention relates to the technical field of organic silicon rubber compound, in particular to a low compression permanent deformation organic silicon rubber compound method. Background technique [0002] Silicone rubber is one of the most important products of polysiloxane. It is a linear polysiloxane with a high molar mass before vulcanization, and becomes an elastomer with a network structure after vulcanization. It has excellent high and low temperature resistance, weather resistance, ozone resistance, arc resistance, electrical insulation, resistance to certain chemicals, high air permeability and physiological inertness. Moreover, the above characteristics are closely related to the types of raw rubber, fillers, vulcanizing agents and additives used, as well as their compounding and vulcanization methods. [0003] O-rings, rectangular rings and other products vulcanized by a fixed-shaped mold after adding a vulcanizing agent to the silicone ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K3/22C08K3/36
CPCC08L83/04C08K2003/2227C08L2205/025C08K3/22C08K3/36Y02P20/141
Inventor 张金龙贾宪鹏许庆磊赵钻
Owner 禹城市必拓有机硅有限公司