聚丙烯/乙烯-辛烯共混物的动态交联及性能
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摘要
利用动态交联技术制备了动态交联聚丙烯/乙烯-辛烯共混物(PP/POE).采用哈克转矩流变仪研究了动态交联对PP/POE共混物扭矩的影响;研究了交联剂的种类和POE用量对共混物力学性能的影响;考察了动态交联共混物的流变性能.结果表明,加入过氧化二异丙苯(DCP)后,PP/POE共混物的扭矩先升后降至平衡状态;随着POE用量的增加,PP/POE共混物的冲击强度明显提高,但拉伸强度有所降低,PP/POE共混物合适配比为100∶40,DCP的添加量为POE含量的2%为优;PP/POE共混物熔体流变行为属于假塑性流体,且高温下(220℃)降解反应程度高于交联反应程度.
Dynamic crosslinked polypropylene/ethylene-octene copolymer(PP/POE)blends were prepared by using dynamic crosslinked method.The torque of PP/POE blends was studied using a Hakke Rheometer.Effect of the amount of DCP and POE on mechanical properties and rheological properties of dynamic crosslinked PP/POE blends was investigated.The results show that the torque of PP/POE blends increases firstly with increasing DCP and then decreases to the balance;the impact strength of the blends increases obviously,but tensile strength decreases slightly with increasing POE content;the suitable proportion of PP/POE is 100∶40,and the optimal amount of DCP is 2% of POE content;the rheological behavior of dynamic crosslinked PP/POE blends belongs to pseudoplastic fluid,the degree of degradation reaction is higher than that of crosslinking reaction at high temperature of 220℃.
Dynamic crosslinked polypropylene/ethylene-octene copolymer(PP/POE)blends were prepared by using dynamic crosslinked method.The torque of PP/POE blends was studied using a Hakke Rheometer.Effect of the amount of DCP and POE on mechanical properties and rheological properties of dynamic crosslinked PP/POE blends was investigated.The results show that the torque of PP/POE blends increases firstly with increasing DCP and then decreases to the balance;the impact strength of the blends increases obviously,but tensile strength decreases slightly with increasing POE content;the suitable proportion of PP/POE is 100∶40,and the optimal amount of DCP is 2% of POE content;the rheological behavior of dynamic crosslinked PP/POE blends belongs to pseudoplastic fluid,the degree of degradation reaction is higher than that of crosslinking reaction at high temperature of 220℃.
引文
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[2]Ji-Zhao Liang.Mechanical Properties and Morphology of Polypropylene/Poly(ethylene-co-octene)Blends[J].J Polym Environ,2012,20:872-878.
[3]杨旸,邬素华.PP/POE/CaCO3复合材料的性能研究[J].塑料科技,2007,35(10):54-56.Yang Yang,Wu Suhua.Study on Property of PP/POE/CaCO3Composites[J].Plastics Science and Technology,2007,35(10):54-56.
[4]江学良,李凡,范一泓,等.动态交联PP/EVA共混物的制备与性能研究[J].中国塑料,2013,27(2):40-43.Jiang Xueliang,Li Fan,Fan Yihong,et al.Study on Preparation and Properties of Dynamic Crosslinked PP/POE Blends[J].China Plastics,2013,27(2):40-43.
[5]周琦,王勇,刘涛,等.不同硫化体系对动态硫化POE/PP性能的影响[J].塑料助剂,2007,66(6):47-51.Zhou Qi,Wang Yong,Liu Tao,Fan yihong,et al.Study on the Curing System of POE/PP Thermoplastic Elastomer by Dynamic Vulcanization[J].Plastic Additives,2007,66(6):47-51.
[6]孙晓民,王和平,刘琦,等.低硬度POE/PP动态硫化胶的制备与性能研究[J].弹性体,2007,17(3):6-10.Sun Xiaomin,Wang Heping,Liu Qi,et al.Study on the preparation and properties of POE/PP dynamic vulcanized thermoplastic elastomers with low degree of hardness[J].China Elastomerics,2007,17(3):6-10.
[7]刘艳喜,曲敏杰,郭静,等.PP/POE共混材料的流变行为[J].大连工业大学学报,2013,32(3):202-205.Liu Yanxi,Qu minjie,Guo Jing,et al.Rheological Property of PP/POE Blends[J].Journal of Dalian Polytechnic University,2013,32(3):202-205.
[8]林剑英,张华集,张雯.TAIC助交联对聚丙烯发泡性能的影响[J].高分子材料科学与工程,2010,26(9):68-71.Lin Jianying,Zhang Huaji,Zhang Wen.The Effect of TAIC-Assisted Crosslinking on the Foaming,Performance of Polypropylene[J].Polymer Materials Science and Engineering,2010,26(9):68-71.
[9]梁基照,马文勇.PP/POE共混物力学性能研究[J].塑料科技,2010,38(11):56-58.Liang Jizhao,Ma WenYong.Study on Mechanical Properties of PP/POE Blends[J].Plastics Science and Technology,2010,38(11):56-58.
[10]刘西文,纪立军,王重,等.PP/共聚PP/POE共混体系的研究[J].塑料工业,2008,36(1):29-31.Liu Xiwen,Ji Lijun,Wang Zhong,et al.Study of PP/coPP/POE Blend[J].China Plastics Industry,2008,36(1):29-31.