Zheng Yu-Ying, Li Feng, Ge Liang, Guo Yong
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2011 Nov;31(11):3036-9.
With wet surface modification of kaolinite, composite of PP/Kaolinite/PP-g-MAH was prepared by melt blending process. The kaolinite and composite were characterized by means of Flourier transform infrared (FTIR) spectroscopy, thermo gravimetric analyzer (TGA), X-ray diffraction (XRD) and scanning electron microscope (SEM), and mechanical, thermal performance test. The results indicated that the modifier reacted well with kaolinite and produced synergistic effect well with PP-g-MAH. The tensile strength increased by 10.6%, notched impact strength was better than unmodified kaolinite composite. XRD showed that the diffraction peaks of the composite didn't change evidently, and kaolinite had heterogeneous nucleation effect and increased the degree of crystallization greatly. The heat distortion temperature of the composite was increased by 18 degrees C. SEM analysis showed that the modified kaolinite particles were homogeneously dispersed in the PP matrix, and the modification effect of kaolin was increased.
通过对高岭土进行湿法表面改性，采用熔融共混工艺制备了PP/高岭土/PP-g-MAH复合材料。利用傅里叶变换红外光谱（FTIR）、热重分析仪（TGA）、X射线衍射（XRD）和扫描电子显微镜（SEM）对高岭土及复合材料进行了表征，并进行了力学和热性能测试。结果表明，改性剂与高岭土反应良好，与PP-g-MAH产生了良好的协同效应。拉伸强度提高了10.6%，缺口冲击强度优于未改性高岭土复合材料。XRD表明复合材料的衍射峰没有明显变化，高岭土具有异相成核作用，大大提高了结晶度。复合材料的热变形温度提高了18℃。SEM分析表明，改性高岭土颗粒均匀分散在PP基体中，高岭土的改性效果增强。
