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膜材的分類及特點1,PTFE膜(聚四氟乙烯)在超細玻璃纖維織物上涂聚四氟乙烯樹脂而成。摩擦系數低,耐磨性好 ,化學性能穩(wěn)定。焊接性能好,抗紫外線抗老化和阻燃性好,自潔性能佳。2,ETFE膜(四氟乙烯共聚物)結構輕,透光性好,強度大,使用壽命可達20年以上??箾_擊性能好,熱穩(wěn)定性好,耐化學腐蝕,機械強度高,加工性能好。透光性能好,抗拉強度高不易撕裂 ,質量輕 ,延展性大于400%3,玻纖PVC(玻纖有機硅樹脂建筑膜材)玻璃纖維織物上加PVC涂層。耐高低溫,拒水抗氧化,透光,抗拉強度大。