The invention discloses an additive pouring
sealant used for a
wind driven generator and a preparation method thereof. The preparation method is characterized by comprising the following steps of:
dewatering and blending 100 parts by weight of vinyl
silicone oil, 50-200 parts by weight of
aluminium oxide filler, 50-150 parts by weight of
fire retardant, 0-15 parts by weight of white
carbon black, 0-150 parts by weight of processed
calcium carbonate, 10-30 parts by weight of alpha and
omega-dimethyl
polydimethylsiloxane for 30-200 minutes at the temperature of 120-170DEG C and the vacuum degree of 0.06-0.99mpa to obtain base stock; at the constant temperature, taking 100 parts by weight of base stock, adding 1-4 parts by weight of
hydrogen-containing
silicone oil and 0-0.06 part by weight of inhibitor, stirring in a stirrer for 20-30 minutes to obtain
sealant A; taking 100 parts by weight of base stock, 1-6 parts by weight of
platinum catalyst and 0.6-2 parts by weight of
tackifier, and stirring in the stirrer to obtain
sealant B; evenly mixing the sealant A and the sealant B at the
mass ratio of 5:1; and solidifying the mixture is solidified at the
room temperature to obtain the additive pouring sealant used for a
wind driven generator, wherein the additive pouring sealant used for a
wind driven generator has the advantages of high
thermal conductivity coefficient, excellent electrical property, high and low temperature
impact resistance, salt mist resistance, good
adhesive property at high temperature and high
moisture, and the
fire resistance of V-1 level.