Liquid organic silicon sealant

The invention discloses a liquid organic silicon sealant which comprises vinyl silicone oil, an MQ resin solution, hydrogen-containing silicone oil, filler and a platinum catalyst, the viscosity of the sealant is 8500 to 12000 mPa.s, and the molar ratio of a silicon hydrogen group to a vinyl group is 1 to 1.4; the filler at least comprises nano calcium carbonate with the oil absorption value of 30-60g/100g, and the dosage of the nano calcium carbonate is 15-30% by weight of the sealant; the MQ resin solution is a silicone oil solution of MQ resin, and the dosage of the MQ resin is 5-15% by weight of the sealant. The sealant disclosed by the invention is a liquid sealant, can be used for spraying construction, and has good hanging performance and strength performance at the same time. 本申请公开了一种液态有机硅密封胶，其包括乙烯基硅油、MQ树脂溶液、含氢硅油、填料、铂催化剂；所述密封胶的粘度为8500～12000mPa·s,硅氢基与乙烯基的摩尔比为1～1.4；填料至少包括吸油值为30～60g/100g的纳米碳酸钙，纳米碳酸钙的用量为15～30密封胶重量%；MQ树脂溶液为MQ树脂的硅油溶液，所述MQ树脂的用量为5～15密封胶重量%。本申请的密封胶为液态密封胶，能够进行喷涂施工，同时具有良好的挂着性以及强度性能。