废轮胎橡胶粉在自粘聚合物改性沥青防水卷材中的应用探究

本文探索了采用橡胶粉制备自粘聚合物改性沥青防水卷材的可行性及影响因素。结果表明采用20%的60目橡胶粉可以制备满足GB23441-2009要求的自粘聚合物改性沥青防水卷材。由于橡胶粉交联态属性限制了分子链运动能力，不能充分发挥线性化橡胶的特性。为充分实现橡胶粉中橡胶特点，本文探索了脱硫胶粉用于制备自粘聚合物改性沥青防水卷材可行性。结果表明采用脱硫降解程度（活化度）在50%左右的脱硫胶粉可用于制备性能优异的防水卷材。适宜的配比为（以沥青为100质量份计）50%的脱硫胶粉、6% SBS以及60%滑石粉。由于活化胶粉中的小分子组分与相容剂、线性化大分子橡胶组份以及甲苯不可溶物与SBS作用机理类似，上述共同作用可替代传统方案中的相容剂、橡胶粉以及部分SBS，并得到优异的综合物理性能

Application of tire rubber powder in self adhered polymer modified asphalt waterproofing membrane

This paper explores the feasibility and influencing factors of preparing self-adhesive polymer modified asphalt waterproof membrane with rubber powder. The results show that 20% 60 mesh rubber powder can be used to prepare self-adhesive polymer modified asphalt waterproofing membrane to meet the requirements of GB23441-2009. Because the crosslinking of rubber powder limits the kinematic ability of molecular chain, it can not give full play to the characteristics of linearized rubber. In order to fully realize these characteristics, the feasibility of using activated rubber powder to prepare self-adhesive polymer modified asphalt waterproof membrane was explored. The results show that the activated rubber powder with activation degree of 50% can be used to prepare waterproof coil with excellent properties. The optimum proportion is 50% activated rubber powder, 6% SBS and 60% talc powder with 100% asphalt. Because the small molecular components in the activated rubber powder are similar to compatibilizers, macromolecular rubber components and toluene insoluble substances in the mechanism of action with SBS, the above-mentioned interaction can replace compatibilizers, rubber powder and most of SBS in the traditional scheme, and obtain excellent comprehensive physical properties