本文利用钛酸酯偶联剂NDZ-101处理石墨,采用熔融法制备了聚丁烯(PB)/石墨复合材料.利用DSC、XRD等研究了材料晶型、结晶度随结晶时间的变化,同时研究了复合材料结晶性能对其力学性能的影响.研究表明,随着结晶时间的增加,PB/石墨复合材料的晶型由Ⅱ转变为Ⅰ,石墨的加入加速了晶型的转变;随着石墨含量的增加,PB/石墨复合材料的拉伸强度和抗弯强度增加,而冲击强度降低;当PB/石墨复合材料中石墨含量为15%(质量分数)时,随着晶型的转变和结晶时间的增加(从2 h到96 h),复合材料的拉伸强度从17.34 MPa增加到26.59 MPa,弯曲强度也增加了20%,而冲击强度却降低了大约50%.
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