CAJ | 학술논문

采用动态热力学分析仪、激光粒径分析仪和凝胶渗透色谱仪等分析了高顺式聚丁二烯橡胶/低顺式聚丁二烯橡胶（LCBR）共混体系对高抗冲聚苯乙烯（HIPS）结构和性能的影响。结果表明：随LCBR用量增加，HIPS的结构和性能发生变化。交联度增加，橡胶相粒径减小，聚苯乙烯相的相对分子质量不变，而凝胶含量在w（LCBR）为20%时出现最大值；HIPS的拉伸强度基本不变，熔体流动速率、冲击强度、光泽度降低，维卡软化温度增加；受多重因素影响，HIPS的弯曲模量、断裂拉伸应变及负荷变形温度的变化较为复杂。
채용동태열역학분석의、격광립경분석의화응효삼투색보의등분석료고순식취정이희상효/저순식취정이희상효（LCBR）공혼체계대고항충취분을희（HIPS）결구화성능적영향。결과표명：수LCBR용량증가，HIPS적결구화성능발생변화。교련도증가，상효상립경감소，취분을희상적상대분자질량불변，이응효함량재w（LCBR）위20%시출현최대치；HIPS적랍신강도기본불변，용체류동속솔、충격강도、광택도강저，유잡연화온도증가；수다중인소영향，HIPS적만곡모량、단렬랍신응변급부하변형온도적변화교위복잡。
The?influences?of?high?cis-1,4-polybutadiene?rubber(HCBR)/low?cis-1,4-polybutadiene?rubber(LCBR)??blends?on?structure?and?properties?of?high?impact?polystyrene(HIPS)?were?analyzed?by?means?of?dynamic?mechanical?analyzer(DMA),laser?particle?size?analyzer?and?gel?permeation?chromatography(GPC).?The?results?indicated?that?the?structure?and?properties?of?HIPS?varied?with?the?augmentation?of?LCBR?dosage.?The?structural?aspects?showed?the?degree?of?crosslinking?increased,?particle?size?of?rubber?phase?decreased?and?the?relative?molecular?mass?of?polystyrene?phase?remained?unchanged.?The?gel?content?reached?maximum?when?the?mass?fraction?of?LCBR?was?20%.?The?performance?aspects?showed?that?the?tensile?strength?was?steady,?melt?flow?rate,?impact?strength?and?gloss?decreased,but?Vicat?softening?temperature?increased,?and?the?variations?of?flexu-ral?modulus,?tensile?strain?at?break?and?thermal?deformation?temperature?that?were?affected?by?multiple?factors?were?complicated.