Method for preparing large power LED (light-emitting diode) high thermal conductivity silicone grease
A high thermal conductivity, high power technology, applied in polymer adhesive additives, non-polymer adhesive additives, adhesive additives and other directions, can solve the problems of short storage period, early delamination, short service life, etc. Achieving the effect of delaying time, maintaining long-term effectiveness, and maintaining thermal conductivity
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Embodiment 1
[0013] Embodiment 1: A kind of preparation method of high-power LED high thermal conductivity silicone grease is carried out according to the following steps:
[0014] Mix 10 parts of silicone oil and 80 parts of heat-conducting powder evenly through a planetary machine. The speed of the planetary machine is 500 rpm, the running time of the planetary machine is 30 minutes, and the temperature of the planetary machine is above 100°C; after mixing evenly, enter In the zirconia grinding machine, the grinding frequency of the zirconia grinding machine is more than 3 times. After grinding, it enters the planetary machine for degassing and vacuuming. The speed of the planetary machine is 500 rpm. It is prepared by stirring for 1 hour when the vacuum degree is below -0.09MPa.
[0015] The silicone oil is vinyl silicone oil.
[0016] The thermally conductive powder is magnesium oxide; the mesh of the thermally conductive powder is above 2000 mesh.
[0017] The thixotropic age...
Embodiment 2
[0018] Embodiment 2: A kind of preparation method of high-power LED high thermal conductivity silicone grease, carry out according to the following steps:
[0019] Mix 12 parts of silicone oil and 82 parts of heat-conducting powder evenly through a planetary machine. In the zirconia grinding machine, the grinding frequency of the zirconia grinding machine is more than 3 times. After grinding, it enters the planetary machine for degassing and vacuuming. The speed of the planetary machine is 550 rpm. Prepared by stirring for 1.5 hours when the vacuum degree is below -0.09MPa.
[0020] The organosilicon oil is a mixture of vinyl silicone oil, hydrogen-containing silicone oil and benzyl silicone oil.
[0021] The heat-conducting powder is a mixture of magnesium oxide, zinc oxide and aluminum oxide; the mesh of the heat-conducting powder is above 2000 mesh.
[0022] The thixotropic agent is a mixture of fumed white carbon black and hydrogenated castor oil.
Embodiment 3
[0023] Embodiment 3: A kind of preparation method of high-power LED high thermal conductivity silicone grease is carried out according to the following steps:
[0024] Mix 15 parts of silicone oil and 85 parts of heat-conducting powder evenly through a planetary machine. In the zirconia grinding machine, the grinding frequency of the zirconia grinding machine is more than 3 times. After grinding, it enters the planetary machine for degassing and vacuuming. The speed of the planetary machine is 600 rpm. It is prepared by stirring for 2 hours when the vacuum degree is below -0.09MPa.
[0025] The organosilicon oil is a mixture of vinyl silicone oil, hydrogen-containing silicone oil, phenylmethyl silicone oil, hydroxyl silicone oil, dimethyl silicone oil, methyl long-chain alkyl silicone oil, and quaternary ammonium salt hydrocarbon-based silicone oil.
[0026] The heat-conducting powder is a mixture of magnesium oxide, zinc oxide, aluminum oxide, aluminum nitride, silico...
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