The invention provides two-component condensation-type thermal-conductive
silicone gel and a preparation method thereof. The
silicone gel comprises an A component and a B components; the A component comprises the following raw materials, in parts by weight: 35-60 parts of alpha,
omega-dihydroxy
polydimethylsiloxane, 40-60 parts of
silicon micropowder, 0.5-5 parts of a
zinc-containing compound, and 0.03-0.1 part of a catalyst; and the B component comprises the following raw materials, in parts by weight: 30-55 parts of alkoxy-terminated
polydimethylsiloxane, 40-60 parts of
silicon micropowder, 2-10 parts of a cross-linking agent, and 1-5 parts of a
coupling agent. According to the
silicone gel provided by the invention, the
zinc-containing compound is used in the formula, so that deep curing of the silicone gel is realized, and has better comprehensive performance than gel prepared by adding water, precipitated white carbon and
glycerol organic
phosphate; and the thermal conductive silicone gel has not high requirements for measurement accuracy of mixing equipment and simple and convenient operation during use, the stable performance of the
silica gel after being mixed is ensured, and the thermal conductive silicone gel is suitable for continuous
mass production in an automatic line.