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为了提高聚丙烯(PP)的强韧性能,采用熔融共混法分别制备了质量分数为0～15%的Mg2B2O5晶须(MBOw)和硼酸酯偶联剂(BE)改性MBOw填充PP基复合材料,测试了PP及其复合材料的拉伸、冲击性能,并通过红外光谱、接触角测试、扫描电镜分析等对复合材料界面作用机理进行了研究.结果表明:MBOw与BE之间存在化学和物理吸附层;PP与BE处理前后的MBOw之间不存在化学键合;BE改性MBOw/PP复合材料中PP与MBOw之间的粘附功和表面张力之比由BE表面处理前的8.7增至处理后的315.0,明显改善了基体中MBOw的分散性及其界面结合性能,提高了BE改性MBOw/PP复合材料的拉伸及冲击性能.
In order to improve the toughness of polypropylene (PP), the mass fraction of MBOw and boric acid ester coupling agent (BE) modified MBOw were respectively prepared by melt blending method to fill PP matrix Composite materials, the tensile and impact properties of PP and its composites were tested, and the mechanism of the interfacial interaction of the composites was studied by infrared spectroscopy, contact angle measurement and scanning electron microscopy analysis.The results showed that there was chemical between MBOw and BE And physical adsorption layer; there was no chemical bonding between PP and MBOw before and after BE treatment; the adhesion work and surface tension ratio between PP and MBOw in BE modified MBOw / PP composites were improved from 8.7 before BE surface treatment After treatment to 315.0, MBOw dispersion and interfacial bonding properties in the matrix were obviously improved, and tensile and impact properties of BE modified MBOw / PP composites were improved.