防水透气膜
20世纪50年代，德国的建筑学家发现，沥青防水卷材与涂膜防水材料的自粘性与密闭性特点，致使混凝土结构中的残余水分被封闭在结构内，mic透防水气膜，混凝土结构内的水汽无法散发而导致屋面与墙体孳生霉菌，咪头防水透气膜，室内空气质量与人居健康受到严重威胁。因此，德国建筑界开始使用具有透气性能的屋面垫层，以取代自粘卷材与涂膜防水，这种透气性垫层空铺于屋面基层之上，使现浇混凝土屋面板的水汽迅速排放出去，因而避免了霉菌的孳生。
在当时的历史背景下，人们对建筑节能的认识还不够，20世纪70年代，随着世界能源危机的爆发，欧美对建筑节能问题越来越重视起来。能源专家发现，防水透气膜，这种透气性垫层虽然使现浇混凝土屋面的水汽得以排放，有效解决了防潮与霉菌问题，然而大量水汽向保温层排放，保温材料的热工性能受到严水蒸气导致保温层与结构受潮和破坏。
透气膜性质编辑描述聚四氟乙烯又名防水透气膜（polytetrafluoroethene，一般称作“不粘涂层”或“易洁镬物料”；是一种使用了氟取代聚乙烯中所有氢原子的人工合成高分子材料。这种材料具有抗酸抗碱、抗各种溶剂的特点，几乎不溶于所有的溶剂。同时，防水透气膜具有耐高温的特点，它的摩擦系数极低，所以可作润滑作用之余，亦成为了易洁镬和水管内层的理想涂料。
产品英文详情介绍
breathable waterproof membrane 1950s, german scientists found that construction, and waterproofing self-adhesive bituminous sealing performance characteristics and the waterproof coating material, so that residual moisture in the concrete structure is enclosed within the structure, water-permeable film-mic , water vapor can not be distributed within the concrete structure which led to the roof and wall breeding ground for mold, breathable waterproof membrane microphone, indoor air quality on human health is seriously threatened. thus, german construction industry roofing mat having started breathable properties, to replace the self-adhesive coating and waterproof membrane, this air cushion breathable base layer spread over the roof, so that in-situ concrete roof water vapor discharged rapidly out, thus avoiding a breeding ground for mold. in the historical context, awareness of energy efficiency in buildings is not enough, in the 1970s, with the outbreak of the world's energy crisis, more and more energy-efficient buildings in europe and america to pay attention to it. energy experts found that the breathable waterproof membrane, so that although the water vapor permeability cushion situ concrete roof is discharged, an effective solution to moisture and mold problems, however, a large amount of water vapor by the water into the insulation strict emission, thermal performance of insulation materials vapor results in insulation with structure and moisture damage. gas-permeable polytetrafluoroethylene film properties described edit known breathable waterproof membrane (polytetrafluoroethene, generally referred to as non-stick coating or non-stick pan materials; the use of a synthetic fluorine atoms substituted for all the hydrogen in polyethylene polymer material. this material has acid alkali, characteristics against various solvents, almost insoluble in all solvents. at the same time, waterproof breathable membrane having characteristics of high temperature resistance, its low coefficient of friction, it can be used for lubrication apart, it has become over the paint-stick pan and inner pipes.
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