A kind of conductive silicone rubber adhesive formed at room temperature and its application method

A rubber adhesive, conductive silicon technology, applied in conductive adhesives, adhesives, non-polymer adhesive additives, etc., can solve problems such as inability to deep cure, achieve great application value, high conductivity, and shorten working hours Effect

Inactive Publication Date: 2011-12-14
JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this conductive silicone rubber is cured by absorbing moisture in the air, so it h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0040] example 1:

[0041] Preparation of component A: In a dry and clean container, uniformly mix the following components: 1000 parts by weight of scaly silver powder with a diameter of 1000 nn, 80 parts by weight of vinyl terminated polysiloxane with a viscosity of 3000cp and a vinyl content of 0.3% A mixture of alkanes, 20 parts by weight of a vinyl silicone resin with a viscosity of 6000 cp and a vinyl content of 1%, 1 part by weight of Karstedt's catalyst, and 5 parts by weight of a vinyl-containing triethoxysilane tackifier. After mixing, a viscous liquid with a viscosity of 10000cp~20000cp is obtained, which is stored in a sealed container.

[0042] Preparation of component B: In a dry and clean container, uniformly mix the following components: 900 parts by weight of scaly silver powder with a diameter of 1000 nn, 80 parts by weight of vinyl terminated polysiloxane with a viscosity of 3000cp and a vinyl content of 0.3% A mixture of alkanes, 20 parts by weight...

Example

[0045] Example 2:

[0046] Preparation of component A: In a dry and clean container, uniformly mix the following components: 400 parts by weight of spherical silver-plated copper powder with a diameter of 100mm, 20 parts by weight of vinyl-terminated polymer with a viscosity of 1000cp and a vinyl content of 1% A mixture of siloxanes, 80 parts by weight of a vinyl silicone resin with a viscosity of 10,000 cp and a vinyl content of 4%, 0.1 part by weight of Karstedt's catalyst, and 0.1 part by weight of a vinyl-containing triethoxysilane tackifier. After mixing, a viscous liquid with a viscosity of 15000cp~25000cp is obtained, which is stored in a sealed container.

[0047] Preparation of component B: In a dry and clean container, uniformly mix the following components: 400 parts by weight of spherical silver-plated copper powder with a diameter of 100 nn, 20 parts by weight of vinyl-terminated polymer with a viscosity of 1000cp and a vinyl content of 1% A mixture of si...

Example

[0050] Example 3:

[0051] Preparation of component A: In a dry and clean container, uniformly mix the following components: 700 parts by weight of spherical silver-plated glass powder with a diameter of 5000 nn, 30 parts by weight of vinyl-terminated polymer with a viscosity of 10,000 cp and a vinyl content of 0.2% A mixture of siloxanes, 50 parts by weight of a vinyl silicone resin with a viscosity of 1000 cp and a vinyl content of 2%, 0.01 parts by weight of Karstedt's catalyst, and 2 parts by weight of a vinyl-containing triethoxysilane tackifier. After mixing, a viscous liquid with a viscosity of 8000cp-15000cp is obtained, which is stored in a sealed container.

[0052] Preparation of component B: In a dry and clean container, uniformly mix the following components: 700 parts by weight of spherical silver-plated glass powder with a diameter of 5000 nn, 30 parts by weight of vinyl-terminated polymer with a viscosity of 10,000 cp and a vinyl content of 0.2% A mixt...

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Abstract

The invention provides a conductive silicone rubber adhesive formed at room temperature on site. The adhesive includes component A and component B. The component A includes: 400-1000 parts by weight of metal-based conductive filler, 20-80 parts by weight of vinyl-terminated polysiloxane, 20-80 parts by weight of ethylene base silicone resin, 0.01~1 weight part of Karstedt catalyst; the component B includes: 400~1000 parts by weight of metal-based conductive filler, 20~80 parts by weight of vinyl-terminated polysiloxane, 20~80 parts by weight of vinyl silicon Resin, 10-35 parts by weight of hydrogen-containing silicone oil, and 0.01-1 part by weight of inhibitor. The invention has the characteristics of high conductivity and low operating conditions, and the formed conductive layer has reliable bonding, long service life, good sealing performance, vibration resistance, and high and low temperature impact resistance. The present invention also provides a method for using the above-mentioned room temperature in-situ forming conductive silicone rubber adhesive. The adhesive includes component A and component B. The ratio is thoroughly mixed. Easy to use, can be molded on site, cured at room temperature, not affected by the thickness of the adhesive layer.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, in particular to a high-conductivity silicone rubber adhesive capable of deep curing at room temperature and formed on site and a preparation method thereof. [0002] Background technique [0003] Conductive silicone rubber is a very important class of conductive composite materials. It not only has the characteristics of ordinary conductive adhesive that can realize conductive bonding after curing, but also has the characteristics of good elasticity, high sealing performance, anti-aging and long life of silicone rubber. Therefore, it has a wide range of uses in electromagnetic shielding, anti-interference, and radiation protection of various electronic equipment. By installing a conductive silicone rubber strip or applying a conductive silicone rubber adhesive at the seam of the electronic device, the electromagnetic radiation generated by the electronic device can be effectively re...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/05C09J11/04C09J9/02
Inventor 汤砚蔚姜清奎常振宇丁渐宝
Owner JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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