A kind of silicone rubber adhesive for automobile electronic label and preparation method thereof
A technology of automotive electronics and silicone rubber, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problem of poor performance of double-sided adhesives such as high temperature resistance, water resistance and UV resistance, and reduce the bonding effect of silicone rubber , Incomplete vulcanization of silicone rubber and other problems, to achieve the effect of fast vulcanization speed, fast deep vulcanization performance, and convenient operation
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Embodiment 1
[0034] Firstly, 85 parts of 107 silicone rubber with a viscosity of 5000mPa·S and silazane-treated specific surface area of 200m 2 Add 15 parts of fumed silica per gram into a high-speed mixer and heat up to 160°C for 30 minutes to dry; 2 parts of oxysilane, 0.5 part of di-tert-butyldiacetoxysilane, 1 part of vinyltrimethoxysilane, mixed under vacuum for 30 minutes, and finally added 0.02 part of dibutyltin dilaurate, tetra-titanate 0.5 part of isobutyl ester, mixed in vacuum for 40 minutes, filtered under the protection of inert gas in a PP tube isolated from air, to obtain the silicone rubber adhesive for automotive electronic tags.
[0035] The obtained adhesives were made into mechanical and hardness test samples according to GB / T 528-2009 and GB / T 531-2008 respectively, and vulcanized for 7 days at 25°C and a relative humidity of 50% to test their tensile strength and elongation at break. Elongation, Shore A hardness; according to GB / T 7124-2008, shear specimens were m...
Embodiment 2
[0037] Firstly, 88 parts of 107 silicone rubber with a viscosity of 10000mPa·S and silazane-treated specific surface area of 200m 2Add 12 parts of fumed silica per gram into a high-speed mixer, heat up to 160°C and dry for 30 minutes; then move it into a planetary mixer to evacuate and defoam for 40 minutes; then add 5 parts of ethyltriacetoxysilane, di-tert-butyl 1 part of diacetoxysilane, 1.5 parts of γ-glycidyl etheroxypropyl trimethoxysilane, mixed under vacuum for 30 minutes, and finally added 0.03 parts of dibutyl tin diacetate, 0.8 parts of tetraisopropyl titanate , mixed in vacuum for 60 minutes, and filtered in an air-insulated PP tube under the protection of an inert gas to obtain a silicone rubber adhesive for automotive electronic tags.
[0038] The obtained adhesives were made into mechanical and hardness test samples according to GB / T 528-2009 and GB / T 531-2008 respectively, and vulcanized for 7 days at 25°C and a relative humidity of 50% to test their tensile ...
Embodiment 3
[0040] Firstly, 85 parts of 107 silicone rubber with a viscosity of 5000mPa·S and silazane-treated specific surface area of 200m 2 Add 15 parts of fumed silica per gram into a high-speed mixer, heat up to 160°C and dry for 30 minutes; then move it into a planetary mixer to evacuate and defoam for 45 minutes; then add 2 parts of vinyltriacetoxysilane, ethyltriacetyl 3 parts of oxysilane, 1 part of di-tert-butyldiacetoxysilane, 0.8 parts of ethyl orthosilicate, mixed for 30 minutes under vacuum conditions, and finally added 0.02 parts of dibutyltin dilaurate, 0.3 parts of molybdenum acetylacetonate Parts, mixed in vacuum for 60 minutes, filtered in an air-insulated PP tube under the protection of an inert gas, and the silicone rubber adhesive for automotive electronic tags was obtained.
[0041] The obtained adhesives were made into mechanical and hardness test samples according to GB / T 528-2009 and GB / T 531-2008 respectively, and vulcanized for 7 days at 25°C and a relative h...
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