低黏度、快固化聚氨酯注浆液的研制  

Preparation of low viscosity and fast curing polyurethane grouting fluid

作　　者：裴须强 张帅 朱玉雪 Pei Xuqiang;Zhang Shuai;Zhu Yuxue(China Building Materials Academy,Beijing 100024,China;CNBM Zhongyan Technology Co.,Ltd.,Beijing 100024,China)

机构地区：[1]中国建筑材料科学研究总院,北京100024 [2]中建材中岩科技有限公司,北京100024

出　　处：《中国胶粘剂》2019年第11期20-24,43,共6页China Adhesives

基　　金：公司科研项目（ZY-2019-01）

摘　　要：以PAPI(多苯基甲烷多异氰酸酯)、聚醚二醇、聚醚三醇及小分子扩链剂1,4-丁二醇为主要原料,加以增塑剂、偶联剂、疏水剂及催化剂等助剂,制备出了一种新型低黏度、快固化的聚氨酯注浆液,并与参比样进行了对比试验。研究结果表明:自制的注浆液能充分反应,固化时间短,施工性能好,力学性能较佳;其中2 h抗压强度达到43 MPa,2 h拉伸强度达到17.4 MPa,2 h断裂伸长率达到33%,7 d的粘接强度达到5.43 MPa。A new type of low viscosity and fast curing polyurethane grouting fluid was prepared by using PAPI(polyphenylmethane polyisocyanate),polyether glycol,polyether triol and small molecular chain extender 1,4-butanediol as main raw materials,with plasticizer,coupling agent,hydrophobic agent and catalyst as auxiliary agents. The results were compared with the reference sample. The research results showed that the self-made grouting fluid could fully react,the curing time was short,the construction performance was good,and the mechanical performance was excellent. The compressive strength reached 43 MPa in 2 hours,the tensile strength reached 17.4 MPa in 2 hours,the elongation at break reached 33% in 2 hours,and the bonding strength reached 5.43 MPa in 7 days.

关 键 词：低黏度 快固化 注浆液 

分 类 号：TQ317[化学工程—高聚物工业]