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    • 6. 发明授权
    • Fire retardant EPDM roofing membrane compositons for use on high-sloped roofs
    • 用于高斜坡屋顶的阻燃EPDM屋顶膜组合物
    • US06632509B1
    • 2003-10-14
    • US09073686
    • 1998-05-06
    • James A. DavisWilliam F. Barham, Jr.Gregory A. Brandt
    • James A. DavisWilliam F. Barham, Jr.Gregory A. Brandt
    • B32B1902
    • E04D5/06C08L23/16Y10T428/24405C08L2666/04
    • Fire retardant sheeting materials for roofing having improved burn resistivity and are suitable for use on roofs having inclines of at least 1 inch per linear foot. These sheeting materials are prepared from a polymeric composition of matter comprising a base polymer containing at least one ethylene-propylene-diene terpolymer, the base polymer having up to about 2 percent by weight crystallinity; from about 85 to about 175 parts by weight of at least one non-combustible mineral filler per 100 parts of the base polymer; from about 30 to about 50 parts by weight of a processing material, per 100 parts of the base polymer; from about 50 to about 80 parts by weight of at least one fire retardant additive, per 100 parts of the base polymer; and from about 1.5 to about 10 parts by weight of a sulfur cure package per 100 parts of the base polymer. The composition contains at least 40 percent non-combustible materials, and the sheeting material has a limiting oxygen index (LOI) of at least 40 percent when tested in accordance with ASTM D2863-91. A method of covering a roof comprises the steps of applying layers of the fire retardant roof sheeting material prepared from the polymeric composition of matter, to the roof being covered, overlapping adjacent edges of the roof sheet material, and adhesively seaming the overlapped layers of the roof sheet material together to form a continuous roofing membrane.
    • 用于屋顶的阻燃板材料具有改善的耐燃烧性,并且适用于具有至少1英寸/线性脚的倾斜的屋顶。 这些片材材料由包含至少一种乙烯 - 丙烯 - 二烯三元共聚物的基础聚合物的物质的聚合物组合物制备,所述基础聚合物具有至多约2重量%的结晶度; 每100份基础聚合物约85至约175份重量的至少一种不可燃矿物填料; 约30至约50重量份的加工材料,每100份基础聚合物; 约50至约80重量份的至少一种阻燃添加剂,每100份基础聚合物; 和约1.5至约10重量份的硫固化包/每100份基础聚合物。 组合物含有至少40%的不可燃材料,当根据ASTM D2863-91进行测试时,片材材料的极限氧指数(LOI)至少为40%。 覆盖屋顶的方法包括以下步骤:将由聚合物组合物制备的阻燃屋顶材料层施加到被覆盖的屋顶,与顶板材料的相邻边缘重叠,并且粘合地接合屋顶板材的重叠层 屋顶板材一起形成连续的屋顶膜