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LDPE含量对LLDPE/LDPE共混物性能的影响
引用本文:秦小梅,李树材,李邦. LDPE含量对LLDPE/LDPE共混物性能的影响[J]. 天津科技大学学报, 2011, 26(2): 37-40
作者姓名:秦小梅  李树材  李邦
作者单位:天津科技大学材料科学与化学工程学院,天津,300457
摘    要:以线性低密度聚乙烯(LLDPE)与低密度聚乙烯(LDPE)为原料,经Brabender挤出机熔融吹膜制备出LLDPE/LDPE共混膜,并借助差示扫描量热仪(DSC)、偏光显微镜(POM)、电子万能试验机和毛细管流变仪研究了LLDPE/LDPE共混物的结晶行为、结晶形态、力学性能以及熔体流变性能.结果表明:加入适量LDPE后,共混膜仍然具有较好的综合力学性能.随着LDPE质量分数的增加,共混物的结晶度下降,晶粒尺寸减小;共混物的熔体流变性能提高.

关 键 词:线性低密度聚乙烯  低密度聚乙烯  共混膜  结晶  力学性能  流变

Effect of LDPE Content on Properties of LLDPE/LDPE Blend
QIN Xiao-mei,LI Shu-cai,LI Bang. Effect of LDPE Content on Properties of LLDPE/LDPE Blend[J]. Journal of Tianjin University of Science & Technology, 2011, 26(2): 37-40
Authors:QIN Xiao-mei  LI Shu-cai  LI Bang
Affiliation:QIN Xiao-mei,LI Shu-cai,LI Bang(College of Material Science and Chemical Engineering,Tianjin University of Science & Technology,Tianjin 300457,China)
Abstract:Linear low density polyethylene(LLDPE)/low density polyethylene(LDPE)blend film was prepared through melt blowing by Brabender extruder.The crystallization behavior and crystal morphology of the blend were characterized byDSC and POM.In addition,mechanical properties and melt rheological properties of the blend film were investigated.The results indicate that the comprehensive mechanical properties of the blend film can still keep fine after adding appropriateamount LDPE.The crystallinity and grain size of ...
Keywords:LLDPE  LDPE  blend film  crystallization  mechanical properties  rheological  
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