丁苯橡胶改性石油沥青及其油毡的研制

STUDY ON PREPARATION OF SBR MODIFIED ASPHALT AND FELT

以丁苯橡胶(SBR)为主改性剂,聚烯烃等其它调节剂为辅助剂,在特定的工艺下对石油沥青进行改性.改性后沥青的软化点升高.针入度和延伸度增大,改善了温度敏感性.SBR改性沥青油毡,耐热度可达90℃以上,低温柔性可达-15℃(比传统纸胎油毡明显地提高了耐高温性能和耐低温性能).SBR改性沥青卷材的原材料来源充足,价格比较便宜,是改性沥青防水卷材新品种,有着良好的应用前景和明显的经济效益和社会效益.

Petroleum asphalt is modified with SBR and other modifiers and additives by a specific process. It has higher softening point, greater penetration, greater ductility and better temperature susceptility than The non-modified basic asphalt. The heat-resistivity of the felt made with SBR modified asphalt is higher than 90?? ,and the foldability is lower than-15℃. Raw materials for the production of SBR modified asphalt sheet are cheap and easy to get. This sheet is anew type of waterproofing felt. It has a good potential of applicationwith obvious economic and social benefits.