NX8000K对PP/LDPE共混体系增透增韧改性  

Modification of Transparency and Toughness of PP/LDPE Blend System by NX8000K

作　　者：蔺海川 袁炜 罗发亮[1,2] 焦烘桥 李彦鹏 Lin Haichuan;Yuan Wei;Luo Faliang;Jiao Hongqiao;Li Yanpeng(Ningxia University,State Key Laboratory of High Efficiency Utilization of Coal and Green Chemical Engineering,Yinchuan,Ningxia,750021;School of Chemistry and Chemical Engineering,Ningxia University,Yinchuan,Ningxia,750021;National Energy Group Ningxia Coal Company,Yinchuan,Ningxia,750411)

机构地区：[1]宁夏大学,省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川750021 [2]宁夏大学化学化工学院,宁夏银川750021 [3]国家能源集团宁夏煤业公司,宁夏银川750411

出　　处：《现代塑料加工应用》2022年第1期36-39,43,共5页Modern Plastics Processing and Applications

基　　金：宁夏回族自治区重点研发项目(对外合作专项)基金(2019BFH02018);宁夏高等学校一流学科(化学工程与技术)建设项目基金(NXYLXK2017A04);国能宁煤资助项目。

摘　　要：通过熔融共混法制备聚丙烯(PP)/低密度聚乙烯(LDPE)共混物,利用成核剂NX8000K对PP/LDPE共混物进行改性。借助差示扫描量热仪(DSC)、X射线衍射仪(XRD)、偏光显微镜(POM)等研究了NX8000K对PP/LDPE共混物透明性、热性能、结晶行为和力学性能的影响。结果表明:随着LDPE含量增加,PP/LDPE共混物雾度先下降后上升,当LDPE质量分数为15%时,PP/15%LDPE共混物雾度由PP的50.40%降至40.89%;随着NX8000K含量增加,共混物雾度和冲击强度均降低,当NX8000K质量分数为0.4%时,PP/15%LDPE/0.4%NX8000K共混物的雾度和冲击强度分别为10.98%和4.29 kJ/m^(2),但与PP相比,PP/15%LDPE/0.4%NX8000K共混物冲击强度仍提高了74%。Polypropylene(PP)/low density polyethylene(LDPE)blend was prepared by melt blending,and PP/LDPE blend was modified by NX8000 K nucleating agent.The effects of NX8000 K on the transparency,thermal properties,crystallization behavior and mechanical properties of PP/LDPE blend were studied by DSC,XRD,POM.The results show that with the increase of LDPE content,the haze of PP/LDPE blend decreases first and then increases.When the mass fraction of LDPE is 15%,the haze of PP/15%LDPE blend decreases between 50.40%of PP and 40.89%.With the increase of NX8000 K content,the haze and impact strength of the blend decrease.When the mass fraction of NX8000 K is 0.4%,the haze and impact strength of PP/15%LDPE/0.4%NX8000 K blend are 10.98%and 4.29 kJ/m^(2),respectively.However,compared with PP,the impact strength of PP/15%LDPE/0.4%NX8000 K blend increases by 74%.

关 键 词：聚丙烯 低密度聚乙烯 成核剂 透明性 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]