摘要
选用极性单体马来酸酐(MAH),在非隔氧条件下以过氧化苯甲酰(BPO)为引发剂对废弃橡胶粉表面进行接枝改性。通过傅立叶红外光谱对接枝产物进行测试,结果表明在1700 cm-1附近出现酸酐的羰基官能团(C=O)特征峰。橡胶细集料掺量同为60 kg/m3时,改性橡胶细集料砂浆28 d抗压强度较改性前基本持平,而用NaOH和马来酸酐改性后砂浆的28 d抗折强度较改性前分别提高11.4%和5%,说明采用改性橡胶粉可使水泥砂浆硬化体韧性、延展性提高。
Maleic anhydrid(MAH),one kind of polar monomer,was tried to graft copolymerization on the surface of pulverized waste tyre rubber by using Benzoyl-peroxide (BPO) as initiating agent in the presence of oxygen in this work.Fourier transform infrared(ATR-FTIR) spectra proved that MAH was grafted on the surface of the rubber as the characteristic-peak of carbonyl group appeared at 1 700 cm-1.The results of mechanical property test indicated that with the partial replacement of sand by surface-modified rubber po...
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第1期52-54,74,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50608034)
