异佛尔酮二异氰酸酯改性蒙脱土改性沥青的性能
发布时间：2018-07-16 23:45
【摘要】：采用异佛尔酮二异氰酸酯(IPDI)对醋酸化蒙脱土(HMMT)进行改性,得到IPDI改性HMMT(IPDI-HMMT);以IPDI-HMMT作为新的沥青化学改性剂,通过熔融共混法制备改性沥青材料;研究了改性沥青的物理性能、UV老化性和热稳定性.结果表明:接枝上—NCO的IPDI-HMMT能与沥青中羟基反应生成氨基甲酸酯,形成剥离结构;IPDIHMMT掺入沥青后,改性沥青材料的起始分解温度提升了9℃,软化点高达57.0℃,且其离析软化点差值及UV老化后质量改变率、软化点增量和残留针入度比的变化均小于Na-MMT改性沥青.IPDI-HMMT与沥青的化学反应加强了内部组分的相互作用而形成稳定的胶体结构,对沥青性能的增强效果优于Na-MMT.
[Abstract]:Isophorone diisocyanate (IPDI) was used to modify the acetic acid montmorillonite (HMMT) and IPDI modified HMMT (IPDI-HMMT) was prepared by melt blending. The physical properties, UV aging and thermal stability of modified asphalt were studied. The results show that the IPDI-HMMT grafted with -NCO can react with the hydroxyl group to form carbamate. The initial decomposition temperature of the modified asphalt is increased by 9 鈩，
本文编号：2128089
[Abstract]:Isophorone diisocyanate (IPDI) was used to modify the acetic acid montmorillonite (HMMT) and IPDI modified HMMT (IPDI-HMMT) was prepared by melt blending. The physical properties, UV aging and thermal stability of modified asphalt were studied. The results show that the IPDI-HMMT grafted with -NCO can react with the hydroxyl group to form carbamate. The initial decomposition temperature of the modified asphalt is increased by 9 鈩，
本文编号：2128089
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