CAJ | 학술논문

将氢化苯乙烯-丁二烯-苯乙烯(SEBS)/纳米碳酸钙(nano-CaCO3)加入聚丙烯(PP)中进行熔融共混，制备PP/SEBS/nano-CaCO3复合材料。采用扫描电子显微镜、差示扫描量热仪以及力学性能测试等研究nano-CaCO3含量对三元复合体系力学性能、微观形态结构以及结晶性能的影响。结果表明，一定量nano-CaCO3的加入不仅能改善SEBS在基体中的分散，而且可使PP的结晶温度和结晶度均下降，球晶尺寸逐渐减小；复合材料冲击强度有明显增高，而拉伸强度略有下降。当SEBS含量为10%，同时加入4%的nano-CaCO3时，复合材料可获得较好的综合力学性能。
장경화분을희-정이희-분을희(SEBS)/납미탄산개(nano-CaCO3)가입취병희(PP)중진행용융공혼，제비PP/SEBS/nano-CaCO3복합재료。채용소묘전자현미경、차시소묘량열의이급역학성능측시등연구nano-CaCO3함량대삼원복합체계역학성능、미관형태결구이급결정성능적영향。결과표명，일정량nano-CaCO3적가입불부능개선SEBS재기체중적분산，이차가사PP적결정온도화결정도균하강，구정척촌축점감소；복합재료충격강도유명현증고，이랍신강도략유하강。당SEBS함량위10%，동시가입4%적nano-CaCO3시，복합재료가획득교호적종합역학성능。
PP/SEBS/nano-CaCO3 composites were prepared by simultaneously adding styrene-ethylene/butylene-styrene triblock copolymers (SEBS) and nanometre calcium carbonates (nano-CaCO3) into polypropylene(PP) through blending. The effects of different content of nano-CaCO3 on mechanical properties,morphology and crystal properties of PP/SEBS/nano-CaCO3 composites were studied by SEM,DSC,mechanical testing etc. The results show that the addition of nano-CaCO3 can improve the dispersion of SEBS in PP matrix and make crystallization temperature,crystallinity and the size of spherulite of PP matrix decrease, which cause impact strength increase significantly while the tensile strength decline slightly. When the weight proportion of SEBS is 10%and the mass content of nano-CaCO3 is 4%,the comprehensive mechanical properties of PP/SEBS/nano-CaCO3 is optimal.