摘要
本文对不同种类的层状硅酸盐粘土膨润土 (BEN)及累托石 (REC)进行有机改性 ,利用X射线衍射 (XRD)分析有机粘土的层间结构变化 ,研究不同有机粘土与聚氨脂弹性体熔融共混后复合材料的力学性能。结果表明 :改性后的有机粘土层间距均有不同程度的增大 ,复合材料的力学性能均有不同程度的增加 ,其中有机累托石补强的效果较好 ;有机粘土在添加两份时均表现出较大的拉伸强度 ,累托石在两份添加量时的拉伸强度由原来的 3 7 2MPa提高到 5 3 8MPa ,提高了 44 6% ;撕裂强度在所研究范围是增加的 ,8份时从纯基体的 92 8kN m提高到 13 8kN m ,提高了 49%。
Different kind of silicate layered clay Ben(BEN) and Rectorite(REC) has been organic by ion-exchanged with quaternary ammonium salt and benzidine, and the composites of caly-thermoplasyic polyurethane elastomer(TPUR) were prepared via intercalation of polymer melts. The structures of layer inorganic clay, different kind of organic clay, and composites were discussed through X-ray diffraction pattern (XRD). The mechanical properties were also tested. The result showed that the organic-clays d-spacing are larger than that of untreated clay. The mechanical properties of composites are increased. Therein, the composites of the organic REC treated by quaternary ammonium salt(OREC1) with TPUR have been greatly improved. The composites' tensile strength of OREC1/TPUR is about 42% higher than that of pure TPUR when OREC1 content is 2 parts. With OREC1 content increasing, tearing strength is also noticeably increasing, from 92.8kN/m to 138.8kN/m, is about 49% higher than that of pure TPUR when OREC1 contents is 8 parts.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2003年第2期191-195,共5页
Journal of Materials Science and Engineering
