Unlock instant, AI-driven research and patent intelligence for your innovation.

A low-volatility, heat-resistant, heat-conducting silica gel clay material and its preparation method and application

A heat-conducting silicone and low-volatility technology, which is applied in the field of heat-conducting materials, can solve the problems of low-molecular volatility and achieve high temperature resistance

Active Publication Date: 2022-05-17
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of low-molecular-end vinyl polydimethylsiloxane and / or vinyl polymethylvinylsiloxane will cause low-molecular volatilization in high-temperature environments for a long time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A low-volatility, heat-resistant, heat-conducting silica gel clay material and its preparation method and application
  • A low-volatility, heat-resistant, heat-conducting silica gel clay material and its preparation method and application
  • A low-volatility, heat-resistant, heat-conducting silica gel clay material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The mass ratio is aluminum oxide: aluminum hydroxide = 10: 1. Aluminum oxide and aluminum hydroxide are mixed to form a thermally conductive filler. Put 100g of methyl vinyl silicone rubber with a vinyl content of 0.04% as a carrier and 100g of mixed thermally conductive fillers into the kneader, add 3g of lanthanide temperature-resistant agent JC-CeVRR and stir evenly, then add 1g of viscosity 10000mp*s hydrogen containing 0.052wt % of linear double-end hydrogen-containing polysiloxane, 1g of linear double-end hydrogen-containing polysiloxane with a viscosity of 200000mp*s containing 0.18wt% hydrogen, mix and stir evenly, and then add 1g of platinum-vinylsiloxane complex , mix evenly, vacuumize and remove air bubbles for 20 minutes, then raise the temperature to 120°C and continue mixing for 20 minutes to obtain a heat-conducting cement material.

Embodiment 2

[0031] The mass ratio is aluminum oxide: aluminum hydroxide = 10: 1. Aluminum oxide and aluminum hydroxide are mixed to form a thermally conductive filler. Put 100g of methyl vinyl silicone rubber with a vinyl content of 0.08% as a carrier and 300g of mixed thermally conductive fillers into the kneader, add 4g of lanthanide temperature-resistant agent JC-CeVRR and stir evenly, then add 2g of viscosity 50000mp*s hydrogen containing 0.052wt % of linear double-end hydrogen-containing polysiloxane, 1g of linear double-end hydrogen-containing polysiloxane with a viscosity of 100000mp*s containing 0.18wt% hydrogen, mix and stir evenly, and then add 1.5g of platinum-vinyl siloxane to compound Mix evenly, vacuumize and remove air bubbles for 20 minutes, then raise the temperature to 120°C and continue mixing for 20 minutes to obtain a heat-conducting cement material.

Embodiment 3

[0033] The mass ratio is aluminum oxide: aluminum hydroxide = 10: 1. Aluminum oxide and aluminum hydroxide are mixed to form a thermally conductive filler. Put 100g of methyl vinyl silicone rubber with a vinyl content of 0.04% and 500g of mixed thermally conductive fillers into the kneader, add 5g of lanthanide temperature-resistant agent JC-CeVRR and stir evenly, then add 2g of 200000mp*s viscosity 200000mp*s hydrogen-containing 0.052wt% Linear double-ended hydrogen-containing polysiloxane, 2g of linear double-ended hydrogen-containing polysiloxane with a viscosity of 10000mp*s containing 0.18wt% hydrogen, mixed and stirred evenly, then added 2g of platinum-vinylsiloxane complex, mixed Evenly, evacuate air bubbles for 20 minutes, then raise the temperature to 120°C and continue mixing for 20 minutes to obtain a heat-conducting cement material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of heat-conducting materials, and discloses a low-volatility, temperature-resistant and heat-conducting silica gel mud material, a preparation method and application thereof. The low-volatility heat-resistant heat-conducting silica gel clay material includes the following components in parts by mass: 100-1000 parts of heat-conducting filler, 100 parts of carrier, 2-5 parts of crosslinking agent, 3-5 parts of temperature-resistant agent, and 1 part of platinum catalyst ~ 2 servings. The present invention adopts methyl silicone rubber, methyl vinyl silicone rubber, and hydroxyl-terminated silicone rubber, which not only have lower volatile content, but also have a higher molecular weight than silicone oil systems, have higher temperature resistance, and are used in platinum catalysts. Under catalysis, it undergoes hydrosilylation reaction with side-chain hydrogen-containing polysiloxane to form silicone rubber with low crosslinking degree, which is plasticine-like, does not flow, does not cure and does not volatilize, and is resistant to high and low temperatures.

Description

technical field [0001] The invention belongs to the field of heat-conducting materials, in particular to a low-volatility, temperature-resistant and heat-conducting silica gel clay material, a preparation method and application thereof. Background technique [0002] Thermally conductive silica gel materials are usually prepared by adding various thermally conductive additives to silicone oil carriers. Commonly used thermally conductive fillers are aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride, and silicon carbide. Conventional thermally conductive silicone gaskets and thermally conductive gels are usually formed after curing, and the material deformation is small, so they cannot be reused. The thermal conductive silicone grease is a non-curing material, and if it is used at high temperature for a long time, the silicone oil will precipitate out and the material will become dry and hard, which will affect its use. The heat-conducting putty has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K3/22C09K5/14
CPCC08L83/04C09K5/14C08L2205/025C08L2205/03C08K2003/2227C08L2201/08C08K2201/014C08K3/22
Inventor 朱立新李要山吴良辉
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION