CAJ | 학술논문

通过差示扫描量热仪(DSC)、偏光显微镜(PLM)等研究了挤出温度对添加 NX8000K 成核剂无规共聚聚丙烯(PPR)的结晶行为、晶体形貌、光学性能及热力学性能的影响。结果表明：PPR 添加成核剂 NX8000K 后,随着挤出温度的升高,PPR 的结晶峰温度升高,晶核数量增多；试样的拉伸强度和断裂伸长率在高温条件下表现得更加优异,而冲击强度和维卡软化温度则随着挤出温度的升高逐渐下降；试样的光学性能得到提升,最终优化出了适宜的挤出温度。
통과차시소묘량열의(DSC)、편광현미경(PLM)등연구료제출온도대첨가 NX8000K 성핵제무규공취취병희(PPR)적결정행위、정체형모、광학성능급열역학성능적영향。결과표명：PPR 첨가성핵제 NX8000K 후,수착제출온도적승고,PPR 적결정봉온도승고,정핵수량증다；시양적랍신강도화단렬신장솔재고온조건하표현득경가우이,이충격강도화유잡연화온도칙수착제출온도적승고축점하강；시양적광학성능득도제승,최종우화출료괄의적제출온도。
The effects of extrusion temperatures on crystallization behavior, crystal morphology,transparency,thermodynamic properties of random copolymer of polypropyl-ene (PPR) with nucleation agent NX8000K were investigated by Differential Scanning Calorimetry (DSC),Polarizing Microscope (PLM),etc.The results show that as the ex-trusion temperature increases,the crystallization peak temperature of PPR with addition of nucleating agent NX8000K will increase,and the quantities of crystal nucleus increase obviously.The tensile strength and elongation at break are more excellent at high tem-perature condition,but the notched impact strength and vicat softening temperature de-crease.The optical properties of the samples are improved.Finally,the suitable extru-sion temperature is obtained.