Some research results show that: the greater the viscosity of the base silicone oil, the lower the oil permeation of the thermal conductive silicone gel; with the increase of the ratio of Si-H/Si-Vi substances and the increase of the amount of thermal conductive filler, the oil permeation of the material will be reduced. With the increase of the ratio of the amount of chain extender/crosslinking agent, the oil penetration of the material will gradually increase; when the ratio of the amount of chain extender/crosslinking agent reaches a certain value, it will even lead to the material crosslinking is too low and can not be molded. Thermally conductive silicone gel flow rate and oil penetration rate is directly proportional to the flow rate, the greater the flow rate, the greater the oil penetration rate; in the silicone oil viscosity remains unchanged, with the continuous increase in thermal conductivity of the filler, the thermal conductivity coefficient increases, thermal conductivity of the flow rate of the silicone gel appeared to be a significant decline in the rate of penetration is also gradually reduced; with the raw rubber silicone oil ratio increases, the flow rate of the thermal conductivity of the silicone gel decreases, oil penetration is reduced; zinc oxide thermal conductivity is higher than that of alumina, and at the same time, the zinc oxide The thermal conductivity of zinc oxide is higher than that of alumina, at the same time, the particle size of zinc oxide is smaller than that of alumina, the oil-absorption value is higher, and the oil penetration rate is relatively low; and the modified alumina has a higher coefficient of thermal conductivity than that of the unmodified alumina, and the contact with the silicone oil is better, it is more conducive to the construction of the thermal conductivity of the path, and the oil penetration rate is lower and the flow rate is higher, while maintaining a better coefficient of thermal conductivity.