Long-chain alkyl modified organosilicon waterproofing agent, preparation method and application in preparation of aerated bricks

The invention relates to the technical field of organosilicon waterproofing agents, in particular to a long-chain alkyl modified organosilicon waterproofing agent, a preparation method and application in preparation of aerated bricks. The invention provides a long-chain alkyl modified organic silicon waterproof agent which is long-chain alkyl modified polysiloxane, part of methyl is oxidized and crosslinked to form a hydrophobic polydimethylmethyl long-chain alkyl siloxane film at the high temperature of 200 DEG C, the hydrophobic film contains long-chain alkyl compatible with resin, and coating brushing on the surface of a building is not affected. 本发明涉及有机硅防水剂技术领域，尤其涉及一种长链烷基改性有机硅防水剂、制备方法和在加气砖制备中的应用。本发明提供一种长链烷基改性有机硅防水剂，该有机硅防水剂是一种长链烷基改性聚硅氧烷，在200℃高温条件下，部分甲基氧化交联形成憎水的聚二甲基甲基长链烷基硅氧烷膜，憎水膜含有与树脂相容的长链烷基，不影响建筑表面涂刷涂料。