聚丙烯与丙烯-乙烯共聚物的共混改性研究
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摘要
将聚丙烯(PP)、丙烯-乙烯共聚物(PEC)弹性体熔融共混,制备了不同比例的PP/PEC共混物。然后对PP/PEC共混物的形态结构、热性能和力学性能进行了研究。扫描电子显微镜(SEM)分析结果显示,PEC粒子在PP基体中均匀分散,PP/PEC共混体系为部分相容体系。差示扫描量热(DSC)测试也表明,PP与PEC弹性体为部分相容。拉伸测试结果显示,PP/PEC共混物表现为明显的韧性断裂,说明PEC弹性体对PP具有良好的增韧效果,使其断裂伸长率显著提高。
The alloys were prepared by melt blending polypropylene(PP) and propylene-ethylene copolymer(PEC) elastomer with various proportions. The morphological structure, thermal properties and mechanical properties of PP/PEC blends were studied. The SEM analysis results shows that the PEC particles are dispersed uniformly in the continuous PP matrix(by scanning electron microscope), and the PP/PEC blend system is partially compatible. The differential scanning calorimeter also shows that the PP and PEC elastomer are partially compatible. The tensile test indicates that PP/PEC blends show obvious ductile fracture, that is, PEC elastomer has good toughening effect on PP, and the elongation at break of the blends increases significantly.
The alloys were prepared by melt blending polypropylene(PP) and propylene-ethylene copolymer(PEC) elastomer with various proportions. The morphological structure, thermal properties and mechanical properties of PP/PEC blends were studied. The SEM analysis results shows that the PEC particles are dispersed uniformly in the continuous PP matrix(by scanning electron microscope), and the PP/PEC blend system is partially compatible. The differential scanning calorimeter also shows that the PP and PEC elastomer are partially compatible. The tensile test indicates that PP/PEC blends show obvious ductile fracture, that is, PEC elastomer has good toughening effect on PP, and the elongation at break of the blends increases significantly.
引文
[1]Ning NY,Yin QJ,Luo F,et al.Crystallization behavior and mechanical proper ties of polypropylene/halloysite composites[J].Polymers,2007,48(25):7 374-7 384.
[2]Zhang S.A review of flame retardant polypropylene fibers[J].Progress in Polymer Science,2003,28(11):1 517-1 538.
[3]Hong C H,Lee Y B,Bae J W,et al.Tensile properties and stress whitening of polypropylene/polyolefin elastomer/magnesium hydroxide flame retardant composites for cable insulating application[J].Appl Polym Sci,2005,97(6):2 311-2 318.
[4]Liauw C M,Lees G C,Hurst S J,et al.Effect of silane-based filler surface treatment formulation on the interfacial properties of impact modified polypropylene magnesium hydroxide composites[J].Compos Part A:Appl Sci,1998,29(9-10):1 313-1 318.
[5]Yin J,Zhang Y,Zhang YX.Fracture behavior and deformation mechanism of polypropylene/ethylene-octane copolymer/magnesium hydroxide ternary phase composites[J].Appl Polym Sci,2005,98(3):957-967.
[6]Chen XL,Yu J,Guo SY.Structure and properties of polypropylene composites filled with magnesium hydroxide[J].Appl Polym Sci,2006,102(5):4 943-4 951.
[7]张立峰,郭宝华,张增民.双单体固相共聚改性聚丙烯技术及其机理研究[J].高等学校化学学报,2001,22(8):1 406-1 409.
[8]王东波,田言,韩俐伟,等.纳米Si O2表面接枝聚合改性及在PP中的分散[J].合成树脂及塑料,2008,11(1):3 234-3 239.
[9]蒋姗,李夏倩,王克敏,等.丙烯酸甲酯/二乙烯基苯接枝交联共聚合改性聚丙烯隔膜[J].功能材料,2014,32(20):20 020-20 023.
[10]谢浩,杨隽,周立民,等.PP/LDPE化学交联发泡的研究[J].应用化工,2012,21(7):1 132-1 139.
[12]郭红革,谢雁.橡胶改性PP共混体系的研究[J].塑料工业,2001,29(1):13-15.
[13]Hao GR,Huang WD,Yuan J,et al.Effect of aging on chemical and rheological properties of SBS modified asphalt with different compositions[J].Construction and Building Materials,2017,156:902-910.
[14]王新慧.聚丙烯催化剂与高性能产品开发技术进展[J].化工管理,2017(28):19.
[15]王晓东.威达美TM(VistamaxxTM)丙烯基弹性体性能及应用[J].化工新型材料,2014,42(5):248-250.
[16]蔺海兰,李常青,蒋少强,等.SBS和纳米Si O2协同增韧PP复合材料的研究[J].工程塑料应用,2014,44(11):11-16.
[17]杨继年,许爱琴.LDPE共混改性PP的结晶行为及模压发泡效果[J].塑料科技,2012,40(7):60-63.
[18]李国林,吴水珠,曾钫,等.高模量高强度PP/PA6复合材料的制备与研究[J].塑料工业,2009,37(10):25-31.
[19]黄健,张云灿,左文京,等.PP/EPDM/高岭土三元共混体系的脆韧转变[J].工程塑料应用,2000,28(10):6-9.
[20]朱德钦,生瑜,王剑峰,等.PP/EPDM/Ca CO3三元复合材料的相结构及力学性能研究[J].高分子学报,2008(11):1 061-1 067.
[21]羊海棠,杨瑞成,冯辉霞,等.纳米二氧化硅粒子增韧聚丙烯的研究[J].甘肃工业大学学报,2003,29(2):34-36.
[2]Zhang S.A review of flame retardant polypropylene fibers[J].Progress in Polymer Science,2003,28(11):1 517-1 538.
[3]Hong C H,Lee Y B,Bae J W,et al.Tensile properties and stress whitening of polypropylene/polyolefin elastomer/magnesium hydroxide flame retardant composites for cable insulating application[J].Appl Polym Sci,2005,97(6):2 311-2 318.
[4]Liauw C M,Lees G C,Hurst S J,et al.Effect of silane-based filler surface treatment formulation on the interfacial properties of impact modified polypropylene magnesium hydroxide composites[J].Compos Part A:Appl Sci,1998,29(9-10):1 313-1 318.
[5]Yin J,Zhang Y,Zhang YX.Fracture behavior and deformation mechanism of polypropylene/ethylene-octane copolymer/magnesium hydroxide ternary phase composites[J].Appl Polym Sci,2005,98(3):957-967.
[6]Chen XL,Yu J,Guo SY.Structure and properties of polypropylene composites filled with magnesium hydroxide[J].Appl Polym Sci,2006,102(5):4 943-4 951.
[7]张立峰,郭宝华,张增民.双单体固相共聚改性聚丙烯技术及其机理研究[J].高等学校化学学报,2001,22(8):1 406-1 409.
[8]王东波,田言,韩俐伟,等.纳米Si O2表面接枝聚合改性及在PP中的分散[J].合成树脂及塑料,2008,11(1):3 234-3 239.
[9]蒋姗,李夏倩,王克敏,等.丙烯酸甲酯/二乙烯基苯接枝交联共聚合改性聚丙烯隔膜[J].功能材料,2014,32(20):20 020-20 023.
[10]谢浩,杨隽,周立民,等.PP/LDPE化学交联发泡的研究[J].应用化工,2012,21(7):1 132-1 139.
[12]郭红革,谢雁.橡胶改性PP共混体系的研究[J].塑料工业,2001,29(1):13-15.
[13]Hao GR,Huang WD,Yuan J,et al.Effect of aging on chemical and rheological properties of SBS modified asphalt with different compositions[J].Construction and Building Materials,2017,156:902-910.
[14]王新慧.聚丙烯催化剂与高性能产品开发技术进展[J].化工管理,2017(28):19.
[15]王晓东.威达美TM(VistamaxxTM)丙烯基弹性体性能及应用[J].化工新型材料,2014,42(5):248-250.
[16]蔺海兰,李常青,蒋少强,等.SBS和纳米Si O2协同增韧PP复合材料的研究[J].工程塑料应用,2014,44(11):11-16.
[17]杨继年,许爱琴.LDPE共混改性PP的结晶行为及模压发泡效果[J].塑料科技,2012,40(7):60-63.
[18]李国林,吴水珠,曾钫,等.高模量高强度PP/PA6复合材料的制备与研究[J].塑料工业,2009,37(10):25-31.
[19]黄健,张云灿,左文京,等.PP/EPDM/高岭土三元共混体系的脆韧转变[J].工程塑料应用,2000,28(10):6-9.
[20]朱德钦,生瑜,王剑峰,等.PP/EPDM/Ca CO3三元复合材料的相结构及力学性能研究[J].高分子学报,2008(11):1 061-1 067.
[21]羊海棠,杨瑞成,冯辉霞,等.纳米二氧化硅粒子增韧聚丙烯的研究[J].甘肃工业大学学报,2003,29(2):34-36.