离聚物Surlyn对高韧高强GF/PET复合材料性能影响研究
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摘要
采用离聚物沙林树脂(Surlyn)对聚对苯二甲酸乙二醇酯(PET)/玻璃纤维(GF)/乙基-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物(EMG)/乙烯-甲基丙烯酸酯弹性体(EMA)四元强韧复合体系进一步增韧改性,并研究了不同含量Surlyn对材料力学性能、热性能、结晶性能及冲击断面形貌的影响。结果表明,Surlyn的加入会进一步提高PET/GF/EMG/EMA复合体系的韧性,0. 5%时冲击强度出现最高值,呈现最优刚性-韧性平衡; Surlyn能改善玻纤与PET基体之间的界面性能,但随着Surlyn含量的增加,断面形貌从韧性断裂变为脆性断裂,材料强度逐渐下降。同时材料的结晶度随着Surlyn含量增加逐渐提高,添加到1. 5%时,对结晶速度的提升效果有限; Surlyn能提高材料热变形温度,但高含量Surlyn又对材料热变形温度问题起着降低作用,在Surlyn含量为0. 5%～1. 5%时,材料具有相对较高的热变形温度。以上结果表明,Surlyn含量在0%～1%的材料具有最佳的综合性能。
Ionomer Surlyn was introduced to toughen the polyethylene terephthalate( PET)/glass fiber( GF)/ethyl-methyl acrylate-glycidyl methacrylate terpolymer( EMG)/ethylene-methacrylate elastomer( EMA) blends. The influence of the Surlyn contents on the mechanical properties,thermal properties,crystallization Behavior and fractured surface morphology of blends were investigated. The results show that the toughness of PET/GF/EMG/EMA composite is further improved by Surlyn. The impact strength could achieve the highest value at 0. 5%,which could present the optimal rigidity-toughness balance. Surlyn could improve the interfacial properties between glass fibers and PET matrix,however the fracture morphology of PET/GF/EMG/EMA could convert from toughness fracture to brittle fracture as Surlyn contents increase,and the strength of the composites decreases gradually. At the same time,the crystallinity of the material increases gradually with the increase of Surlyn contents.When the contents of Surlyn are 1. 5%,the increasing-effect of the crystallization rate is limited. Surlyn could increase the thermal deformation temperature of the material,but the thermal deformation temperature of the material could be reduced at the high content of Surlyn. When the content of Surlyn is 0. 5% ～ 1. 5%, the material has relatively high thermal deformation temperature. The above all results show that the composite material has the best comprehensive properties,when the contents of Surlyn content is 0% ～ 1%.
Ionomer Surlyn was introduced to toughen the polyethylene terephthalate( PET)/glass fiber( GF)/ethyl-methyl acrylate-glycidyl methacrylate terpolymer( EMG)/ethylene-methacrylate elastomer( EMA) blends. The influence of the Surlyn contents on the mechanical properties,thermal properties,crystallization Behavior and fractured surface morphology of blends were investigated. The results show that the toughness of PET/GF/EMG/EMA composite is further improved by Surlyn. The impact strength could achieve the highest value at 0. 5%,which could present the optimal rigidity-toughness balance. Surlyn could improve the interfacial properties between glass fibers and PET matrix,however the fracture morphology of PET/GF/EMG/EMA could convert from toughness fracture to brittle fracture as Surlyn contents increase,and the strength of the composites decreases gradually. At the same time,the crystallinity of the material increases gradually with the increase of Surlyn contents.When the contents of Surlyn are 1. 5%,the increasing-effect of the crystallization rate is limited. Surlyn could increase the thermal deformation temperature of the material,but the thermal deformation temperature of the material could be reduced at the high content of Surlyn. When the content of Surlyn is 0. 5% ～ 1. 5%, the material has relatively high thermal deformation temperature. The above all results show that the composite material has the best comprehensive properties,when the contents of Surlyn content is 0% ～ 1%.
引文
[1]TAN Z Y,LIU S C,CUI X L,et al.Toughening of poly(ethylene terephthalate)and optimizing of the compatibilization between PET and EPDM by functionalized EPDM[J].J Macromol Sci,Part D:Rev Polym Process,2014,53(2):141-149.
[2]程红原,田明,张立群,等.弹性体增韧PET/GF复合体系性能的研究[J].塑料,2007,36(6):17-20.
[3]刘伯林,杨明.聚对苯二甲酸乙二醇酯结晶成核剂[J].精细石油化工,1999(6):37-40.
[4]王瑞元,陈晓东,徐群杰,等.离聚物Surlyn8920对PET/PBT合金结晶性能的影响[J].塑料工业,2014,42(1):34-38.
[5]TANG S D,XIN Z.Structural effects of ionomers on the morphology,isothermal crystallization kinetics and melting behaviors of PET/ionomers[J].Polymer,2009,50(4):1054-1061.
[6]MA Y L,YANG G P,XIE L S,et al.Morphology,nonisothermal crystallization behavior and mechanical properties of polypropylene modified by ionomers[J].J Macromol Sci Part B,2014,53(12):1829-45.
[7]边界.PET及其共聚酯的结晶行为[D].杭州:浙江大学,2002.
[8]金日光,华幼卿.高分子物理(第3版)[M].北京:化学工业出版社,2007:147-148.
[9]张大余,闰明涛,吴丝竹,等.PET/分子筛复合材料的非等温结晶性能[J].塑料工业,2005,33(2):48-50.
[10]许乾慰,蒋中,刘波,等.离聚物单体结构对PET非等温熔融结晶过程的影响[J].工程塑料应用,2010,38(11):63-67.
[11]张静旖,丁永红,俞强,等.离聚物surlyn对PET/PA66共混物性能的影响[J].中国塑料,2011,25(11):22-26.
[2]程红原,田明,张立群,等.弹性体增韧PET/GF复合体系性能的研究[J].塑料,2007,36(6):17-20.
[3]刘伯林,杨明.聚对苯二甲酸乙二醇酯结晶成核剂[J].精细石油化工,1999(6):37-40.
[4]王瑞元,陈晓东,徐群杰,等.离聚物Surlyn8920对PET/PBT合金结晶性能的影响[J].塑料工业,2014,42(1):34-38.
[5]TANG S D,XIN Z.Structural effects of ionomers on the morphology,isothermal crystallization kinetics and melting behaviors of PET/ionomers[J].Polymer,2009,50(4):1054-1061.
[6]MA Y L,YANG G P,XIE L S,et al.Morphology,nonisothermal crystallization behavior and mechanical properties of polypropylene modified by ionomers[J].J Macromol Sci Part B,2014,53(12):1829-45.
[7]边界.PET及其共聚酯的结晶行为[D].杭州:浙江大学,2002.
[8]金日光,华幼卿.高分子物理(第3版)[M].北京:化学工业出版社,2007:147-148.
[9]张大余,闰明涛,吴丝竹,等.PET/分子筛复合材料的非等温结晶性能[J].塑料工业,2005,33(2):48-50.
[10]许乾慰,蒋中,刘波,等.离聚物单体结构对PET非等温熔融结晶过程的影响[J].工程塑料应用,2010,38(11):63-67.
[11]张静旖,丁永红,俞强,等.离聚物surlyn对PET/PA66共混物性能的影响[J].中国塑料,2011,25(11):22-26.