Bi-component conductive silica gel as well as preparation method and application thereof
A conductive silicone, two-component technology, applied in the field of conductive adhesive, can solve the problem of large heat dissipation, and achieve the effect of improving shielding efficiency, excellent shielding efficiency and good storage stability
Active Publication Date: 2021-06-04
深圳市星河达科技有限公司
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The invention relates to the technical field of conductive adhesives, in particular to bi-component conductive silica gel and a preparation method and application thereof. The bi-component conductive silica gel comprises an adhesive A and an adhesive B. The adhesive A is prepared from the following raw materials in parts by weight: 80 to 120 parts of alpha, omega-dihydroxy polydimethylsiloxane, 10 to 20 parts of diethylamino methyl triethoxy silane, 60 to 90 parts of nickel-coated graphite/carbon fiber, 1 to 3 parts of coupling agent, 5 to 15 parts of filler and 0.001 to 0.01 part of catalyst; The adhesive B is prepared from the following raw materials in parts by weight: 80 to 120 parts of alpha, omega-dihydroxy polydimethylsiloxane, 10 to 20 parts of diethylamino methyl triethoxy silane, 60 to 90 parts of nickel-coated graphite/carbon fiber, 1 to 3 parts of a coupling agent, 5 to 15 parts of filler and 3 to 5 parts of ethynyl cyclohexanol. The shielding effectiveness of the conductive silica gel can reach up to 138 dB and is more than 80 dB after aging, the shielding effectiveness is excellent, and the conductive silica gel can be widely applied to the repeater to shield electromagnetic interference of wireless communication equipment.
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Property | Measurement | Unit |
Shielding effectiveness | 138.0 | db |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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