摘要
利用十六烷基季铵盐对累托石 (REC)进行了有机化处理 ,采用不同填充量 (2、5、8份 )的REC及有机累托石 (ORECB)与热塑性聚氨酯弹性体 (TPUR)进行熔融共混 ,制备了粘土 /热塑性聚氨酯弹性体纳米复合材料 ;采用红外光谱 (FTIR)、X-射线衍射分析 (XRD)、扫描电镜 (SEM)及Molau实验方法研究了 REC及 ORECB在 TPUR中的分散性 ,研究了复合材料的力学性能。结果表明 :ORECB在质量分数为 2份时复合材料的拉伸强度提高了 40 % ;撕裂强度在所加份数范围内呈现递增趋势 ,8份时提高了 40 %。
ORECB (organic rectorite clay)/TPUR(thermoplastic polyurethane) nanocomposites can be more simply prepared via melt blend process. We aim to increase its strength by selecting suitable parts of ORECB in 100 parts of TPUR. We performed experiments with 2,5,or 8 parts of ORECB in 100 parts of TPUR. We prepared ORECB from natural rectorite through ion exchange with a particular kind of quaternary ammonium salt. We characterized ORECB/TPUR nanocomposites by FTIR (Fourier transform infrared spectroscopy), wide angle XRD (X ray diffraction), and SEM (scanning electron microscope). These characterization results show that the layer spacings of both ORECB and ORECB/TPUR become larger than that of natural rectorite. This increase in layer spacing shows in turn that ORECB is well dispersed on a nanometer scale in TPUR. This good dispersion is beneficial to the strength of ORECB/TPUR; ORECB/TPUR nanocomposites' tensile strength is highest at 2 parts of ORECB in 100 parts of TPUR and is 40% higher than of TPUR; ORECB/TPUR nanocomposites' tearing strength is highest at 8 parts of ORECB in 100 parts of TPUR and is 40% higher than that of pure TPUR.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2003年第1期118-121,共4页
Journal of Northwestern Polytechnical University
