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氯乙烯—偏氯乙烯共聚乳液(简称氯—偏乳液)是由上海市建筑科学研究所与有关单位共同研制成的一种高分子材料。它具有无毒、无味、不燃、以水作介质,能在稍潮湿的基面上施工,成膜性能优良,结膜致密,成膜后透气率低。它对水蒸气的透过率仅为油性漆的1/5左右,为普通乳胶漆的1/20～1/50。涂层耐磨、耐化学性好,光泽度高,可将它配制成防潮涂料、内外墙涂料、地面涂料、防霉涂料,也能配制成氯—偏聚合水泥砂浆用于防水
Vinyl chloride-vinylidene chloride copolymer emulsion (abbreviated as chlorine-partial emulsion) is a kind of polymer material jointly developed by the Shanghai Institute of Building Research and related units. It is non-toxic, odorless, non-combustible, uses water as a medium, can be applied on a slightly damp base surface, has excellent film-forming properties, compact densification, and low air permeability after film formation. Its water vapor transmission rate is only about 1/5 of that of oil paint, which is 1/20 to 1/50 of common latex paint. The coating has good wear resistance, good chemical resistance and high gloss. It can be formulated as a moisture-proof coating, interior and exterior wall coating, floor coating, and anti-mildew coating. It can also be formulated as chlorine - partial polymerization cement mortar for waterproofing.