供应旺玉橡塑板橡塑管保温材料

旺玉橡塑保温材料的主要技术技能

性能                              条件及参数                        执行指标  

外观                          黑色，表面平整                 GB/T17794-1999

发泡结构                    完全闭泡                        

材料类型                    全部I类  

表观密度                     50~80kg/m3                   GB/T6343-1995

燃烧性能                    难燃B1级                         GB/T8624-1997

燃烧产烟毒性              准安全ZA3级合格               GA132-1996

烟密度                      ≤75%                           GB/T8627-1999

燃烧形态外观              炭化、不收缩、无熔滴      

                               -20℃0℃   40℃

平均温度时导热系数    ≤0.031≤0.034≤0.038   GB/T10294-1988

                             W/(m·k) W/(m·k) W/(m·k)

透湿系数              ≤4.4×10负11次方g(m·s·Pa) GB/T17146-1997

湿阻因子                  ≥4.5×10^3                     GB/T17794-1999

真空吸水率               ≤10%                     GB/T17794-1999

尺寸稳定性           105℃±3℃  7d时≤10%     GB8811-1988

压缩回弹率         压缩率50%，压缩时间7h≥70%   GB/T6669-1986

撕拉强度             ≥2.5N/cm                 GA/T10808-1989

抗老化性          150h轻微起皱、无裂纹、无针孔、不变形GB/T16259-1996

耐臭氧性           臭氧分压202mPa 200h 不龟裂  GB/T7762-1989

适用温度范围         -50℃~110℃               GB/T17794-1999