Dealcoholized sealant with low-temperature curing characteristic and preparation method thereof

The invention discloses a dealcoholized sealant with a low-temperature curing characteristic and a preparation method of the dealcoholized sealant. The dealcoholized sealant with the low-temperature curing characteristic is prepared from the following components in parts by weight: 100 parts of alkoxy-terminated polydimethylsiloxane, 20 to 200 parts of dimethyl silicone oil, 100 to 300 parts of inorganic filler, 1 to 6 parts of low-temperature curing agent, 0.5 to 6 parts of cross-linking agent, 0.5 to 3 parts of coupling agent and 3 to 8 parts of catalyst, wherein the low-temperature curing agent is prepared by reacting amino siloxane with diisocyanate. According to the invention, trialkoxy terminated polydimethylsiloxane with relatively high reaction activity is taken as a basic polymer and is matched with the self-made low-temperature curing agent, so that the prepared dealcoholized silicone sealant can be rapidly cured in a low-temperature (0-5 DEG C) environment, the mechanical strength at the initial st