Heat-conductive insulated adhesive tape for large-power light-emitting diode (LED) and preparation method thereof
A heat-conducting, insulating, and high-power technology, applied in adhesives, epoxy resin glue, semiconductor devices, etc., can solve the problems of poor mechanical properties and low thermal conductivity of heat-conducting insulating tapes, and achieve good high-temperature stability and good room-low temperature storage. , The effect of high glass transition temperature
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Embodiment 1
[0020] Weigh 10 parts by weight of a mixture of core-shell rubber modified epoxy resin MX125 and E44 epoxy resin produced by Japan Kaneka Company (the core-shell rubber modified epoxy resin MX125 and E44 epoxy resin in the mixture The weight ratio is 1:1), 10 parts of dodecenyl succinic anhydride, 3 parts of polyurethane, 0.5 parts of tris-(dimethylaminomethyl)phenol and 1.5 parts of coupling agent tetrabutyl titanate Esters, mix the above raw materials evenly and dissolve them in the mixed solvent of MEK and DMF (the weight ratio of DMF and DMF in the mixed solvent is 1:1), the weight of the mixed solvent of MEK and DMF is the weight of the above raw material mixture 20%, that is, the mixed solvent of MEK and DMF is 5 parts by weight. After stirring for 1 hour, add 75 parts of aluminum oxide (DAW-45) with a fineness of 45 μm, and coat the obtained mixture on On the fiber grid substrate, according to the first stage curing temperature of 80 °C, curing time of 0.5 h, the second...
Embodiment 2
[0022] Weigh 10 parts by weight of a mixture of core-shell rubber modified epoxy resin MX125 and E51 epoxy resin produced by Japan Kaneka Company (the core-shell rubber modified epoxy resin MX125 and E51 epoxy resin in the mixture The weight ratio is 1:1), 10 parts of tetradecenyl succinic anhydride, 0.5 parts of tris-(dimethylaminomethyl) phenol, 3 parts of carboxyl-terminated nitrile rubber, 0.5 parts of coupling agent Aminopropyltriethoxysilane (KH-550), after uniformly mixing the above raw materials, dissolve in the mixed solvent of MEK and dipropylene glycol methyl ether (the weight ratio of DMF and dipropylene glycol methyl ether in the mixed solvent is 1: 1), the weight of the mixed solvent of MEK and dipropylene glycol methyl ether is 20% of the weight of the above-mentioned raw material mixture, that is, the weight part of the mixed solvent of MEK and dipropylene glycol methyl ether is 4.8 parts, after stirring for 1 hour, add 76 parts A mixture of alumina (fineness 4...
Embodiment 3
[0024] Weigh 10 parts by weight of a mixture of core-shell rubber-modified epoxy resin MX551 and E51 epoxy resin produced by Japan Kaneka Corporation (in this mixture, core-shell rubber-modified epoxy resin MX551 and E51 epoxy resin The weight ratio is 1:1), 10 parts of tung oil anhydride, 0.5 parts of tri-(dimethylaminomethyl) phenol, 3 parts of hydroxyl-terminated nitrile rubber, 0.5 parts of coupling agent aminopropyl triethyl Oxysilane (KH-550), mix the above raw materials evenly and dissolve in the mixed solvent of dipropylene glycol methyl ether and DMF (the weight ratio of dipropylene glycol methyl ether and DMF in the mixed solvent is 1:1), two The mixed solvent weight of propylene glycol methyl ether and DMF is 20% of above-mentioned each raw material mixture weight, promptly the mixed solvent weight portion of dipropylene glycol methyl ether and DMF is 4.8 parts, after stirring for 1 hour, add 76 parts of aluminum nitride (fine density 45 μm) and colloidal graphite (...
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