不同SBS改性沥青防水卷材性能研究

Study on the Waterproof Performance of Different SBS Modified Asphalt

针对不同SBS改性沥青防水卷材性能进行了分析比较。对熔化时间、软化点的变化、针入度、旋转黏度、低温柔性、接缝剥离强度、内聚强度等分别进行了应用性能比较探究。结果表明:SBS 7301的旋转黏度较低;SBS 4303低温柔性略差一些;接缝剥离强度方面SBS 7301效果较好;力-延度曲线图中力与位移积分面积SBS 4303最大,所做功最多,内聚强度最大。

This paper analyzes and compares the waterproof performance of different SBS modified asphalt.Melting time,change of softening point,penetration degree,rotational viscosity,low temperature flexibility,joint peeling strength and cohesive strength are comparative studied.The results show that:SBS 7301 has a lower rotational viscosity.SBS 4303 has a slightly lower temperature flexibility.SBS 7301 has better effect on joint peel strength.In force-elongation curve,SBS 4303 is largest in force and displacement integral area,means it work most,largest in cohesive strength.