POE增韧改性回收PP的注塑成型工艺及其性能
Injection Molding Process and Properties of Recycled PP Toughened by POE
摘 要
通过正交试验研究了回收聚丙烯(PP)的注塑成型工艺,并以经马来酸酐改性的乙烯-辛烯共聚物(POE)和改性POE+纳米CaCO3作为增韧剂对PP改性,研究了增韧剂加入量对回收PP的微观组织和力学性能的影响.结果表明:影响回收PP力学性能程度由大到小的工艺参数顺序为注塑温度、注塑压力、保压压力和保压时间,最佳工艺参数为注塑温度220 ℃,注塑压力70 MPa,保压压力55 MPa,保压时间40 s;两种增韧剂对回收PP均具有较好的增韧效果,最佳加入量均为25%;用改性POE+纳米CaCO3作为增韧剂的效果优于只使用改性POE作为增韧剂的改性效果.
增韧
改性乙烯-辛烯共聚物(POE)
纳米CaCO3
注塑参数
recycled polypropylene(PP)
toughening
modified ethylene-octene copolymer(POE)
nano-CaCO3
injection parameter
Abstract
The injection molding processing of recycled polypropylene(PP) was studied by orthogonal experiment.Recycled PP was injected with ethylene-octene copolymer(POE) modified by maleic anhydride and modified POE/nano-CaCO3 as toughening agent.The influences of toughness agents on the microstructure and mechanical properties were tested.The results show that the influencing factors of the mechanical properties could be ranked in an order from the greatest to the smallest such as injection temperature,injection pressure,holding pressure,holding time.The best injection molding parameters were as fallows: injection temperature 220 ℃,injection pressure 70 MPa,holding pressure 55 MPa,holding time 40 s.It was found that the tougheness had been greatly improved by using modified POE and modified POE/nano-CaCO3 as toughening agents,and the best addition quantities were both 25%.The samples with modified POE/nano-CaCO3 had better toughness.
中图分类号 TB332
所属栏目 新材料 新工艺
基金项目 江苏省高新技术产业化资助项目(JH01-071)
收稿日期 2008/9/19
修改稿日期 2009/5/9
网络出版日期
作者单位点击查看
备注周娟娟(1986-),女,江苏苏州人,硕士研究生.
引用该论文: ZHOU Juan-juan,YAO Zheng-jun,ZHOU Jin-tang,LIANG En-quan. Injection Molding Process and Properties of Recycled PP Toughened by POE[J]. Materials for mechancial engineering, 2009, 33(10): 78～82
周娟娟,姚正军,周金堂,梁恩泉. POE增韧改性回收PP的注塑成型工艺及其性能[J]. 机械工程材料, 2009, 33(10): 78～82
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【3】典平鸽,杜玲枝.废旧塑料的综合利用[J].浙江化工,2006,37(3):28-32.
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【5】WANG Wen-hai,SADEGHIPOUR K,BARAN G.Finite element analysis of the effect of an interphase on toughening of a particle-reinforced polymer composite[J].Applied Science & Manufacturing,2008,39(6):956-964.
【6】BOCCACCINI D N,CANNIO M,VILKOV-HUSOVIA T D,et al.Assessment of viscoelastic crack bridging toughening in refractory materials[J].Journal of the European Ceramic Society,2008,28(10):1941-1951.
【7】SHARMA R,BOYCE M C,SOCRATE S.Micromechanics of toughening in ductile/brittle polymeric microlaminates: Effect of volume fraction[J].Journal of Solids & Structures,2008,45(7/8):2173-2202.
【8】吴智华,孙洲渝,唐卓,等.影响注塑PP微孔材料结构的工艺参数[J].中国塑料,2002(9):66-68.
【9】冯予星,刘力,张立群,等.PP/POE共混合金的研究[J].工程塑料应用,1999,27(12):6-9.
【10】祝景云,杜建强,赵和英.POE改性PP的性能研究[J].合成树脂与塑料,2007,24(1):14-21.
【11】KOLARIK J,LEDNICKY F,JANCAR J,et al.Phase structure of ternary composites consisting of polypropylene/elastomer/filler-effect of functionalized components[J].Polym Comm,1990(31):201-204.
【12】PUKANSZKY B,TUDOS F,KOLARIK J,et al.Ternary composites of polypropylene,elastomer,and filler-analysis of phase-structure formation[J].Polym Compos,1990(11):98-104.
【13】HORNSBY P R,PREMPHET K J.Influence of phase microstructure on the mechanical properties of ternary phase polypropylene composites[J].Appl Polym Sci,1998,70:587-597.
【14】PUKANSZKY B.Particulate filled polypropylene: structure and properties[J].Macromolecular Symposia,1995(3):1-70.
【15】BAKER R A,KOLLER L L,KUMMER P E.Handbook of Filler for Plastics[M].New York: Van Nostrand Reinhold Co.,1987:420-426.
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