东北石油大学 化学化工学院，黑龙江 大庆 163318
以丙烯酸-2-羟乙酯/马来酸酐接枝聚丙烯（PP）/聚烯烃弹性体共聚物（PPHM）为相容剂，通过熔融挤出制备了β成核聚丙烯/硅灰石复合材料。考察了PPHM含量对复合材料结构和性能的影响。红外光谱、扫描电镜和X射线衍射结果表明，PPHM与硅灰石表面形成了强相互作用，提高了复合体系的相容性，并对PP的结晶产生明显影响。含50 wt% PPHM复合材料的缺口冲击强度达到18.4±1.3 kJ?m?2，约为纯PP的3倍，而拉伸强度仅降低了20.3 %，实现了韧性和强度之间的相对平衡；此外，复合材料的熔体强度和热稳定性优于纯PP。
The β-nucleated polypropylene/wollastonite composites were prepared via melt-extrusion using polypropylene/polyolefin elastomer-g-2-hydroxyethyl acrylate/maleic anhydride (PPHM), as a compatibilizer. The effects of the PPHM content on the structure and properties of the composites were investigated. The infrared spectroscopy, scanning electron microscopy and X-ray diffraction results show that the PPHM forms a strong interaction with the surface of wollastonite, which improves the compatibility of the composite system and has a significant impact on the crystallization of the PP. The notched impact strength of the composite with PPHM of 50 wt% reaches 18.4±1.3 kJ?m?2, which is about 3 times that of pure PP, while the tensile strength is only reduced by 20.3 %, achieving a relative balance between toughness and strength. Furthermore, the melt strength and thermal stabilities of the composites were better than that of neat PP.