Bi-component organic silica gel and preparation method thereof

An organic silica gel, two-component technology, applied in the field of silicone rubber, can solve the problems of surface stickiness affecting hand feel, surface oil not dry, affecting product processing, etc., to achieve excellent physical properties, reduce oil phenomenon, good dispersion. Effect

Pending Publication Date: 2021-11-23
东莞市天之韵新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the low-viscosity liquid silicone rubber on the market generally has ultra-low hardness (Shore C zero), and there are various defects in the performance of the material. Dryness will affect the subsequent processing of the product, such as oil spraying and packaging

Method used

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  • Bi-component organic silica gel and preparation method thereof
  • Bi-component organic silica gel and preparation method thereof
  • Bi-component organic silica gel and preparation method thereof

Examples

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preparation example Construction

[0061] A second aspect of the present invention provides a method for preparing a two-component organic silica gel, comprising the following steps:

[0062] (1) Preparation of base rubber material A: Weigh the raw materials of component A and set aside, divide the modified hydrogen-containing silicone oil A into 3 parts by weight, and record them as A1, A2, and A3 respectively, and add A1 into the kneader 1. Knead the coupling agent for 5-15 minutes, and then add fillers in stages. After all the fillers are added, knead at room temperature for 2-4 hours, raise the temperature to 160-170°C, keep warm and vacuum banbury for 2-4 hours; then add A2, After refining evenly, the basic rubber material A is obtained and set aside;

[0063] (2) Preparation of component A: Take the basic rubber material A obtained in step (1), add A3, reinforcing resin, methyl silicone oil, and catalyst, and stir evenly in a planetary mixer to obtain component A;

[0064] (3) Preparation of base rubber ...

Embodiment 1

[0078]A two-component organic silica gel, composed of A component and B component, the raw materials of the A component include, by weight, 62 parts of modified hydrogen-containing silicone oil A, 25 parts of methyl silicone resin, methyl silicone oil 18 parts, 20 parts of filler, 0.14 parts of coupling agent, 0.2 part of catalyst; the raw materials of the B component include, in parts by weight, 62 parts of modified hydrogen-containing silicone oil B, 25 parts of methyl silicone resin, 18 parts of methyl silicone oil parts, 20 parts of fillers, 0.14 parts of coupling agents, and 0.2 parts of inhibitors;

[0079] The methyl silicone oil is Shin-Etsu KF96-1000CS;

[0080] The number average molecular weight of the methyl silicone resin is 4000;

[0081] The filler is silica powder; the average particle diameter of the silica powder is 1000 mesh;

[0082] The methyl silicone resin is purchased from Xixin Jiayi New Material Co., Ltd., and the model is XJY-8205;

[0083] The nu...

Embodiment 2

[0092] A two-component organic silica gel, consisting of A component and B component, the raw materials of the A component include, in parts by weight, 62 parts of modified hydrogen-containing silicone oil A, 18 parts of methyl silicone oil, 20 parts of filler, 0.14 parts of coupling agent, 0.2 parts of catalyst; the raw materials of the B component include, by weight, 62 parts of modified hydrogen-containing silicone oil B, 18 parts of methyl silicone oil, 20 parts of filler, 0.14 parts of coupling agent, inhibitor 0.2 copies;

[0093] The methyl silicone oil is Shin-Etsu KF96-1000CS;

[0094] The filler is silica powder; the average particle diameter of the silica powder is 1000 mesh;

[0095] The number average molecular weight of the modified hydrogen-containing silicone oil A and the modified hydrogen-containing silicone oil B is 90,000;

[0096] The hydrogen content of described modified hydrogen-containing silicone oil A is 0.22wt%; The preparation raw material of des...

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Abstract

The invention relates to the technical field of silicone rubber, in particular to bi-component organic silica gel and a preparation method thereof. The bi-component organic silica gel is composed of a component A and a component B. The component A is prepared from the following raw materials in parts by weight: 40-70 parts of modified hydrogen-containing silicone oil A, 20-30 parts of reinforcing resin, 10-25 parts of methyl silicone oil, 15-25 parts of filler and 0.01-0.5 part of a catalyst. The component B is prepared from the following raw materials in parts by weight: 40 to 70 parts of modified hydrogen-containing silicone oil B, 20 to 30 parts of reinforcing resin, 10 to 25 parts of methyl silicone oil, 15 to 25 parts of filler and 0.01 to 1 part of an inhibitor. Specific modified hydrogen-containing silicone oil is prepared by selecting specific raw materials, and the low-viscosity bi-component silica gel which is good in physical performance, free of oil leakage and hand sticking and ultralow in hardness (Shore C zero degree) is prepared.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a two-component silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber has excellent cold and heat resistance and durability and is widely used in people's daily life, such as toothbrushes, amusement equipment, tableware, etc. With the improvement of research and development technology, two-component low-viscosity liquid silicone rubber has gradually developed. Because it has the advantages of environmental protection, non-toxic, odorless, weather resistance, wide temperature range, little impact of temperature difference on the performance of the finished product, skin-friendly, non-allergenic, easy to operate, can realize process diversification, and has a particularly wide range of hardness, etc., and It is widely used in the adult products industry. [0003] However, in the continuous development of the entire market, customer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/05C08L83/04C08K3/36C08K5/5445C08K5/05C08G77/12
CPCC08L83/04C08G77/12C08L2205/025C08L2205/035C08K3/36C08K5/544C08K5/05
Inventor 李攀登龚洛覃永坚李向前
Owner 东莞市天之韵新材料科技有限公司
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