摘要
钛酸酯偶联剂对水洗高岭土进行亲水改性,通过机械共混法制备了亲水改性高岭土/水性聚氨酯复合材料,研究了复合材料的力学性能、耐热性能。结果表明,当改性高岭土质量分数2.0%时,复合材料的拉伸强度为24.4 MPa,比聚氨酯增加53.1%,断裂伸长率达492%,增加9.6%,实现了复合材料的增韧增强,同时热稳定性也有所提高。
The hydrous kaolin was modified by titanate coupling agent. A series of hydrophilic modified kaolin/polyurethane dispersions were prepared successfully by mechanical blending,mechanical proper-ties and heat resistance of composite material have been studied. The results indicated that the tensile strength of the composites was 24 . 4 MPa with the content of modified kaolin was 2 . 0%,which increasing 53. 1% than the polyurethane,and the elongation at break up to 492%,increasing 9. 6%. The composites were achieved the effect of enhancing and toughening because of the adding of kaolin. Furthermore,the thermal stability was improved.
出处
《应用化工》
CAS
CSCD
2014年第11期2037-2041,共5页
Applied Chemical Industry
关键词
水洗高岭土
亲水改性
钛酸酯偶联剂
水性聚氨酯
复合材料
washed kaolin hydrophilic modification titanate coupling agent waterborne polyurethane composite materials
