涂膜防水材料通常分有机溶剂型、非溶剂型、水乳型三类。有机溶剂型因含苯类有害物质,污染环境,价高等而趋于淘汰。非溶剂型以聚氨酯双组份弹性涂料为主,性能好,但由于双组份在施工中易出现配比错误影响质量,价高,生产有一定毒性等原因,难于推广。最常用的沥 Coating waterproof material is generally divided into organic solvent type, non-solvent type, water emulsion type three. The organic solvent type tends to be eliminated because it contains benzene harmful substances, pollutes the environment, and is expensive. The non-solvent type is mainly based on polyurethane two-component elastic coating. The performance is good, but it is difficult to popularize due to the reasons that the two components are liable to affect the quality due to the ratio error in the construction, the price is high, and the production has certain toxicity. The most commonly used drain