Single-component addition type liquid silicone rubber and preparation method thereof

A technology of liquid silicone rubber and addition molding, which is applied in the field of liquid silicone rubber, can solve problems such as unstable product performance, and achieve the effects of reducing equipment costs and labor costs, fewer personnel, and cost savings

Inactive Publication Date: 2020-01-10
DONGGUAN TIANAN SILICONES TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a one-component addition type liquid silicone rubber and its preparation method, aiming to solve the problem that the two-compone

Method used

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  • Single-component addition type liquid silicone rubber and preparation method thereof
  • Single-component addition type liquid silicone rubber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The one-component addition-type liquid silicone rubber provided by the embodiment of the present invention includes the following raw materials: 20 parts by weight of low-viscosity vinyl silicone oil, 50 parts by weight of high-viscosity vinyl silicone oil, 20 parts by weight of white carbon black, 5 parts by weight of Hexamethyldisilazane, 1 part by weight of high vinyl silicone oil, 1.5 parts by weight of water, 2 parts by weight of hydrogen-containing silicone oil, 0.2 parts by weight of platinum complex and 0.02 parts by weight of 3-methyl-1 - Dodecyn-3-ol.

[0028] Among them, the viscosity of low viscosity vinyl silicone oil is 8000cs; the viscosity of high viscosity vinyl silicone oil is 60000cs; the vinyl content of high vinyl silicone oil is 7%; the platinum content of platinum complex is 1800ppm; the specific surface area of ​​white carbon black is 200m 2 / g; the hydrogen content of hydrogen-containing silicone oil is 0.36%; the vinyl content of low-viscosity...

Embodiment 2

[0033] The one-component addition-type liquid silicone rubber provided by the embodiment of the present invention includes the following raw materials: 35 parts by weight of low-viscosity vinyl silicone oil, 35 parts by weight of high-viscosity vinyl silicone oil, 28 parts by weight of white carbon black, 6.5 parts by weight of Hexamethyldisilazane, 3 parts by weight of high vinyl silicone oil, 1.75 parts by weight of water, 3 parts by weight of hydrogen-containing silicone oil, 0.35 parts by weight of platinum complex and 0.05 parts by weight of 3-methyl-1 - Dodecyn-3-ol.

[0034] Among them, the viscosity of low viscosity vinyl silicone oil is 10000cs; the viscosity of high viscosity vinyl silicone oil is 70000cs; the vinyl content of high vinyl silicone oil is 8.5%; the platinum content of platinum complex is 2000ppm; the specific surface area of ​​white carbon black 300m 2 / g; the hydrogen content of hydrogen-containing silicone oil is 0.7%. Low viscosity vinyl silicone ...

Embodiment 3

[0039] The one-component addition-type liquid silicone rubber provided by the embodiment of the present invention includes the following raw materials: 50 parts by weight of low-viscosity vinyl silicone oil, 20 parts by weight of high-viscosity vinyl silicone oil, 35 parts by weight of white carbon black, 8 parts by weight of Hexamethyldisilazane, 5 parts by weight of high vinyl silicone oil, 2 parts by weight of water, 4 parts by weight of hydrogen-containing silicone oil, 0.5 parts by weight of platinum complex and 0.08 parts by weight of 3-methyl-1 - Dodecyn-3-ol.

[0040] Among them, the viscosity of low viscosity vinyl silicone oil is 12000cs; the viscosity of high viscosity vinyl silicone oil is 80000cs; the vinyl content of high vinyl silicone oil is 10%; the platinum content of platinum complex is 2100ppm; the specific surface area of ​​white carbon black 400m 2 / g; the hydrogen content of hydrogen-containing silicone oil is 1.2%. Low viscosity vinyl silicone oil has...

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Abstract

The invention belongs to the technical field of liquid silicone rubbers, and particularly relates to a single-component addition type liquid silicone rubber and a preparation method thereof. The single-component addition type liquid silicone rubber comprises, by weight, 20-50 parts of low-viscosity vinyl silicone oil, 20-50 parts of high-viscosity vinyl silicone oil, 20-35 parts of white carbon black, 5-8 parts of hexamethyldisilazane, 1-5 parts of high vinyl silicone oil, 1.5-2 parts of water, 2-4 parts of hydrogen-containing silicone oil, 0.2-0.5 part of a platinum complex and 0.02-0.08 partof 3-methyl-1-dodecyn-3-ol, wherein the total amount of parts by weight of the high-viscosity vinyl silicone oil and the low-viscosity vinyl silicone oil is 70. The invention also discloses the preparation method of the single-component addition type liquid silicone rubber. The single-component addition type liquid silicone rubber can be directly used without metering mixing when used; and the single-component addition type liquid silicone rubber solves the problem of reaction at room temperature, so that protection is not needed during shutdown, and a large amount of cost is saved.

Description

technical field [0001] The invention belongs to the technical field of liquid silicone rubber, in particular to a single-component addition type liquid silicone rubber and a preparation method thereof. Background technique [0002] The two-component addition type liquid silicone rubber currently on the market is composed of A component and B component. This two-component addition-type liquid silicone rubber needs to be measured by equipment according to the ratio of the two components, and then mixed evenly before use. In the above-mentioned metering process, there is the phenomenon of uneven metering of the two, which seriously affects the stability of product performance. In the above mixing process, due to the short mixing time, there is a phenomenon of uneven mixing, which will also affect the stability of product performance. When shutting down, because the two are easily cured after mixing, it needs to be supplemented with component B for protection, and it must be d...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/04C08K7/26C08K5/544C08K5/05
CPCC08K2201/006C08L83/04C08L2205/025C08L2205/035C08K13/04C08K7/26C08K5/544C08K5/05
Inventor 张敬常成家新
Owner DONGGUAN TIANAN SILICONES TECH
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