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Conductive heat-conduction liquid silicone rubber for OA rubber roller and preparation method of liquid silicone rubber

A liquid silicone rubber, electrical and thermal conduction technology, applied in the field of silicone rubber, can solve the problems of large compression set and poor aging resistance, and achieve low compression deformation rate, good aging resistance and low overall deformation rate

Inactive Publication Date: 2019-03-29
XINAN TIANYU SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of conductive and thermally conductive liquid silicone rubber for OA rubber rollers and its preparation method, which has the advantages of low compression set rate, good aging resistance and good thermal conductivity, so as to solve the problems in the background technology proposed above. Large compression set and poor aging resistance under high temperature conditions

Method used

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  • Conductive heat-conduction liquid silicone rubber for OA rubber roller and preparation method of liquid silicone rubber

Examples

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preparation example Construction

[0019] A preparation method of conductive and thermally conductive liquid silicone rubber for OA rubber rollers includes the following steps:

[0020] The first step: select 100 parts of vinyl silicone oil, 300-400 parts of metal aluminum powder and 5-10 parts of vinyl triethoxy silane into the kneader and mix them evenly at low temperature, then heat up to 160 degrees and mix for 3 hours, and cool down Cooled base gum A;

[0021] The second step: select 100 parts of vinyl silicone oil, 10-20 parts of carbon nanotubes and 1-3 parts of hydroxy silicone oil into the kneader and mix them evenly at low temperature, then heat up to 160 degrees and mix for 3 hours, and cool down to obtain base rubber B ;

[0022] The third step: select 100 parts of base gum A prepared in the first step, 20-30 parts of base gum B prepared in step S2, 10-30 parts of vinyl silicone oil and 5-10 ppm of platinum catalyst, and mix them evenly in a planetary mixer Obtain component A;

[0023] Step 4: Select 100 ...

Embodiment 1

[0028] The preparation of Base Gum A includes the following raw materials:

[0029] 100 parts of vinyl silicone oil, molar vinyl content of 0.25%, viscosity of 50000mpa / s; 300 parts of metal aluminum powder, particle size of 5um, 6 parts of vinyl triethoxysilane;

[0030] The preparation of base gum B includes the following raw materials:

[0031] 100 parts of vinyl silicone oil, molar vinyl content of 0.25%, viscosity of 50000mpa / s; 15 parts of carbon nanotubes, 1 part of hydroxy silicone oil, hydroxy group molar content of 9.5%.

[0032] The preparation of component A includes the following raw materials:

[0033] Base Gum A 100 parts

[0034] Base Gum B 30 parts

[0035] Vinyl silicone oil 20 parts

[0036] Platinum catalyst 7ppm

[0037] The preparation of component B includes the following raw materials:

[0038] Base Gum A 100 parts

[0039] Base Gum B 30 parts

[0040] Vinyl silicone oil 20 parts

[0041] Hydrogen silicone oil 4 parts

[0042] Ethynyl cycloethanol 300ppm

[0043] Put the r...

Embodiment 2

[0048] The preparation of Base Gum A includes the following raw materials:

[0049] 100 parts of vinyl silicone oil, molar vinyl content of 0.25%, viscosity of 50000mpa / s; 350 parts of metal aluminum powder, particle size of 5um, 6 parts of vinyl triethoxysilane;

[0050] The preparation of base gum B includes the following raw materials:

[0051] 100 parts of vinyl silicone oil, molar vinyl content of 0.25%, viscosity of 50000mpa / s; 15 parts of carbon nanotubes, 1 part of hydroxy silicone oil, and hydroxy group molar content of 9.5%.

[0052] The preparation of component A includes the following raw materials:

[0053] Base Gum A 100 parts

[0054] Base Gum B 30 parts

[0055] Vinyl silicone oil 20 parts

[0056] Platinum catalyst 7ppm

[0057] The preparation of component B includes the following raw materials:

[0058] Base Gum A 100 parts

[0059] Base Gum B 30 parts

[0060] Vinyl silicone oil 20 parts

[0061] Hydrogen silicone oil 4 parts

[0062] Ethynyl cycloethanol 300ppm

[0063] Put t...

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Abstract

The invention discloses conductive heat-conduction liquid silicone rubber for an OA rubber roller and the preparation method of the liquid silicone rubber. The liquid silicone rubber comprises the following raw materials in parts by mass: 40-60 parts of vinyl silicone oil (with a vinyl molar content of 0.2-0.5% and viscosity of 10000-50000 mPa*s), 2-5 parts of multi-walled carbon nanotubes, 0.1-1part of hydroxyl silicone oil (with viscosity of 30-50 mPa*s, and a hydroxyl molar content of 5.0-10.0%), 40-60 parts of metal aluminum powder (with a particle size of 1-30 microns), 1-2 parts of vinyl triethoxy silane, 1-3 parts of hydrogen-containing silicone oil (with a hydrogen molar content of 0.4-0.8%), 5-10 ppm of a platinum catalyst and 200-400 ppm of ethynyl cyclohexanol. According to theinvention, the structure and the molecular weight of vinyl silicone oil are adjusted, and filler is screened and treated, so that extremely low compression deformation rate and excellent ageing resistance are achieved. The overall deformation rate is low, aging resistance is good, and heat conduction performance is good.

Description

Technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a conductive and heat conductive liquid silicone rubber for OA rubber rollers and a preparation method thereof. Background technique [0002] A conductive rubber roller needs to be used in office equipment such as laser printers, electrostatic copiers and fax machines. With the development of society, the requirements for printers are getting higher and higher. Traditional conductive rubber rollers are used in some high-speed printers. The limitations. [0003] Addition type liquid silicone rubber is a kind of silicone rubber that uses vinyl-containing polysiloxane as the matrix and is quickly vulcanized through hydrosilylation reaction. Its advantages are low viscosity and fast vulcanization. By adding conductive and thermally conductive fillers to liquid silicone rubber products, conductive and thermally conductive liquid silicone rubber can be prepared. At the same time, liq...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K3/08C08K3/04C08K5/5425C09K5/14
CPCC08K2003/0812C08L83/04C08L2201/08C08L2205/025C08L2205/03C09K5/14C08K3/08C08K3/041C08K5/5425
Inventor 邓圣志许二建黄延卢波基廖剑斌王晶晶
Owner XINAN TIANYU SILICONE CO LTD
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