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High-temperature-resistant silica gel for high-temperature roller and preparation method thereof

A high temperature resistant and high temperature resistant filler technology, applied in the field of silicone products, can solve the problems of thermal aging, loss of elasticity and strength, and degradation of silicone products, and achieve the effect of improving high temperature aging resistance, tight and uniform bonding, and increasing structural strength.

Pending Publication Date: 2021-10-01
上海珏晟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

[0002] High temperature resistant silicone is a common performance silicone product in silicone products. With the increasing integration of electronic equipment and industrial equipment, the calorific value is also increasing. When high temperature resistant silicone is used in the above-mentioned high calorific equipment , prone to thermal aging, especially when the thickness of the silicone product is greater than 1 cm, after 2-3 hours of use at a temperature higher than 250 ° C, the silicone product is prone to degradation, softening, stickiness, loss of elasticity and The problem of strength will eventually lead to cracking of the product

Method used

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  • High-temperature-resistant silica gel for high-temperature roller and preparation method thereof
  • High-temperature-resistant silica gel for high-temperature roller and preparation method thereof
  • High-temperature-resistant silica gel for high-temperature roller and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0023] The parts by weight of the high-temperature-resistant silica gel raw materials in Examples 1-5 are shown in Table 1.

[0024] Parts by weight of high temperature resistant silica gel raw materials in Table 1 Examples 1-5

[0025]

[0026] Used in the embodiment 1-5, the vinyl content in the methyl vinyl silicone rubber is 0.05-2%; The specific surface area of ​​the fumed silica is 150-400m 2 / g; the hydroxyl content in hydroxy silicone oil is 4-8%; the hydrogen content in hydrogen-containing silicone oil is 1.2-1.6%; the mesh number of diatomaceous earth is 1000-5000 mesh; the mesh number of spherical aluminum hydroxide is 1000-10000 mesh; the specific surface area of ​​cerium oxide is 20-200m 2 / g; the specific surface area of ​​praseodymium oxide is 20-200m 2 / g.

[0027] In Example 1-5, the preparation method of high temperature resistant silica gel comprises the following steps: put methyl vinyl silicone rubber, hydroxyl silicone oil, silane coupling agent and...

Embodiment 6-10

[0029] The parts by weight of high-temperature-resistant silica gel raw materials in Examples 6-10 are shown in Table 2.

[0030] Parts by weight of high temperature resistant silica gel raw materials in Table 2 Examples 6-10

[0031]

[0032] Used in the embodiment 6-10, the vinyl content in the methyl vinyl silicone rubber is 0.05-2%; The specific surface area of ​​the fumed silica is 150-400m 2 / g; the hydroxyl content in hydroxy silicone oil is 4-8%; the hydrogen content in hydrogen-containing silicone oil is 1.2-1.6%; the mesh number of diatomaceous earth is 1000-5000 mesh; the mesh number of spherical aluminum hydroxide is 1000-10000 mesh; the specific surface area of ​​cerium oxide is 20-200m 2 / g; the specific surface area of ​​praseodymium oxide is 20-200m 2 / g.

[0033] In Examples 6-10, the preparation method of high temperature resistant silica gel comprises the following steps: put methyl vinyl silicone rubber, hydroxyl silicone oil, silane coupling agent an...

Embodiment 11-15

[0035] The parts by weight of the high temperature resistant silica gel raw materials in Examples 11-15 are shown in Table 3.

[0036] Table 3 Parts by weight of high temperature resistant silica gel raw materials in Examples 11-15

[0037]

[0038] Used in the embodiment 11-15, the vinyl content in the methyl vinyl silicone rubber is 0.05-2%; The specific surface area of ​​the fumed silica is 150-400m 2 / g; the hydroxyl content in hydroxy silicone oil is 4-8%; the hydrogen content in hydrogen-containing silicone oil is 1.2-1.6%; the mesh number of diatomaceous earth is 1000-5000 mesh; the mesh number of spherical aluminum hydroxide is 1000-10000 mesh; the specific surface area of ​​cerium oxide is 20-200m 2 / g; the specific surface area of ​​praseodymium oxide is 20-200m 2 / g.

[0039] In Examples 11-15, the preparation method of high-temperature resistant silica gel comprises the following steps: put methyl vinyl silicone rubber, hydroxyl silicone oil, silane coupling ...

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Abstract

The invention relates to the technical field of silica gel products, and particularly discloses high-temperature-resistant silica gel for a high-temperature roller and a preparation method thereof. The high-temperature-resistant silica gel is prepared from the following raw materials in parts by weight: 40-55 parts of methyl vinyl silicone rubber; 15-20 parts of fumed silica; 2-5 parts of hydroxyl silicone oil; 2.5-7 parts of a silane coupling agent; 0.5-2 parts of hydrogen-containing silicone oil; 0.03-0.2 part of zinc stearate; 20-45 parts of a high-temperature-resistant filler; and 3-9 parts of rare earth oxide. The preparation method comprises the following steps: stirring and kneading the methyl vinyl silicone rubber, the hydroxyl silicone oil, the silane coupling agent and the hydrogen-containing silicone oil for 5-10 minutes to obtain a mixture, mixing the fumed silica, the zinc stearate and the high-temperature-resistant filler, adding the mixture into the mixture in 4-5 times, heating to 180 DEG C after charging, adjusting the vacuum degree to -0.09 to -0.1 MPa, stirring for 2-4 hours, and after stirring and cooling to 40-50 DEG C, adding rare earth oxide, stirring and kneading for 0.5-1 hour, and sub-packaging by using a 200-mesh filter screen. The high-temperature-resistant silica gel can be used in the industries of silica gel rollers and gold stamping wheels, and has the advantages of high temperature aging resistance and high degradation resistance.

Description

technical field [0001] The application relates to the technical field of silica gel products, more specifically, it relates to a high-temperature-resistant silica gel for high-temperature rollers and a preparation method thereof. Background technique [0002] High temperature resistant silicone is a common performance silicone product in silicone products. With the increasing integration of electronic equipment and industrial equipment, the calorific value is also increasing. When high temperature resistant silicone is used in the above-mentioned high calorific equipment , prone to thermal aging, especially when the thickness of the silicone product is greater than 1 cm, after 2-3 hours of use at a temperature higher than 250 ° C, the silicone product is prone to degradation, softening, stickiness, loss of elasticity and The problem of strength will eventually lead to cracking of the product. Contents of the invention [0003] In order to obtain a silica gel with excellen...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K13/04C08K7/26C08K5/098C08K3/22C08K7/18
CPCC08L83/04C08L2201/08C08K2201/006C08K2003/2213C08K2003/221C08K13/04C08K7/26C08K5/098C08K3/22C08K7/18
Inventor 陈辉
Owner 上海珏晟新材料科技有限公司
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