摘要
通过表面接枝改性制备了改性胶粉SRP。利用高分辨裂解气相色谱-质谱联用仪(PyGC-MS)和FTIR对SRP的结构进行了分析,测试结果表明,SRP已接枝上磺酸基团。对改性胶粉/砂浆的工作性能和力学性能进行了研究。通过流动度及流动度损失的测定,找出了胶粉(RP)和改性剂的最佳用量比;同时结果表明,改性胶粉SRP可以有效改善砂浆的流动性,并减小流动度损失;在力学性能方面,RP/砂浆复合材料的抗压和抗折强度都大幅下降,而对SRP/砂浆复合材料在保证其抗压强度的同时,实现了抗折强度的提高,材料表现出一定的韧性。胶粉改性方法简单,有利于工业生产。
The modified scrap rubber powder （SRP） was prepared through the surface-graft technology. The structure of SRP was tested by PyGC-MS and FTIR. The results showed that the group of -SO3 was grafted onto the surface of the scrap rubber powder （SRP）. The workability and mechanical properties of SRP/mortar composites were determined. The optimum ratio of modifying agent/SRP was obtained from the test of fluidity and fluidity loss. Furthermore, the modified SRP/mortar composites showed the biggest fluidity, smallest fluidity loss and highest flexural strength in comparison with original SRP/mortar composites and control mortar. The process is simple and is easy to commercialize.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2006年第7期820-824,836,共6页
Chemical Industry and Engineering Progress
基金
华南理工大学自然科学基金资助项目
