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建筑防水材料必需具有耐环境变化、耐外伤以及形成整体的不透水薄膜这三方面的性能。耐环境变化要求具备良好的耐候性、耐化学腐蚀性及温度适应性。上述耐候性包括对光、热及臭氧等的耐受性能,耐化学腐蚀性包括耐水抗渗、耐酸耐碱等性能;耐外伤性能要求拉伸强度高,拉断延伸率大,能承受一定的荷载及冲击力,适应防水基层的伸缩及开裂变形;形成整体的不透水薄膜要求防水材料粘结强度高,能保持卷材之间及卷材与防水基层之间粘结牢固,在外力作用下,具有较高的剥离强度,能与防水基层结合在一起,形成稳固的整体不透水薄膜,起到良好的防水抗渗作用。
Building waterproof materials must have three properties that are resistant to environmental changes, resistance to injury, and the formation of an integral impervious film. Resistance to environmental changes requires good weather resistance, chemical resistance, and temperature suitability. The above weather resistance includes resistance to light, heat, ozone, etc. Chemical resistance includes resistance to water, impermeability, and acid and alkali resistance; resistance to external shock requires high tensile strength, high elongation at break, and durability The load and impact force adapt to the stretching and cracking deformation of the waterproof base layer; the integral impervious film requires the waterproof material to have high bond strength, and can maintain a firm bond between the coil and between the coil and the waterproof base layer under external force. , With a high peel strength, can be combined with the waterproof base layer to form a solid overall impervious film, play a good waterproof anti-seepage effect.