偶联剂及相容剂对连续纤维增强聚丙烯性能的影响
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摘要
以聚丙烯(PP)为基体树脂,玻璃纤维与丙纶纤维混纺织物作为增强体,制备成连续纤维增强热塑性树脂基复合材料。为了改善树脂和纤维之间的界面作用以提升复合材料的综合性能,以KH550,KH560,KH570三种硅烷偶联剂对纤维进行表面处理,并采用马来酸酐接枝PP(PP-g-MAH)相容剂与PP共混改性进行对比。分别对复合材料进行常规力学性能、吸水性能、硬度测试,结合扫描电子显微镜观察复合材料断面形貌,分析了各种处理剂对纤维和树脂间作用的改善情况。结果表明,经过KH550偶联剂处理纤维后制备的复合材料界面改善效果明显,得到的复合材料力学性能最佳。
Glass fiber and polypropylene fiber blended fabrics were used as reinforcements,and polypropylene was used as matrix resin to prepare continuous fiber-reinforced thermoplastic resin matrix composites. In order to improve the interfacial interaction between the resin and the fiber,and to improve the overall performance of the composites,KH550,KH560,KH570 silane coupling agents and maleic anhydride grafted polypropylene(PP-g-MAH) were used as treated agents. The normal mechanical properties,water-absorbing properties,and hardness of the composites were tested,the cross-sectional morphology of the composites was observed by scanning electron microscopy,and the compatibility of the various treated agents for fiber-resin interactions was analyzed. The results show that the interface effect of the composites prepared after the treatment of fiber with KH550 coupling agent is obvious,and the mechanical properties of the composites obtained by this treatment method are the best.
Glass fiber and polypropylene fiber blended fabrics were used as reinforcements,and polypropylene was used as matrix resin to prepare continuous fiber-reinforced thermoplastic resin matrix composites. In order to improve the interfacial interaction between the resin and the fiber,and to improve the overall performance of the composites,KH550,KH560,KH570 silane coupling agents and maleic anhydride grafted polypropylene(PP-g-MAH) were used as treated agents. The normal mechanical properties,water-absorbing properties,and hardness of the composites were tested,the cross-sectional morphology of the composites was observed by scanning electron microscopy,and the compatibility of the various treated agents for fiber-resin interactions was analyzed. The results show that the interface effect of the composites prepared after the treatment of fiber with KH550 coupling agent is obvious,and the mechanical properties of the composites obtained by this treatment method are the best.
引文
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[4]许治平.高性能连续纤维增强聚醚醚酮复合材料的制备及性能研究[D].长春:吉林大学,2017.Xu Zhiping.Preparation and properties of high performance continuous fiber reinforced polyetheretherketone composites[D].Changchun:Jilin University,2017.
[5]Mallik P K.Fiber-reinforced composites[M].New York:Marcel Dekker Inc,2007.
[6]Nikforooz M,Montesano J,Golzar M,et al.Assessment of the thermomechanical performance of continuous glass fiber-reinforced thermoplastic laminates[J].Polymer Testing,2018,67:457–467.
[7]杨莹.热塑性复合材料——可循环利用和快速加工[J].玻璃钢,2012(2):39–45.Yang Ying.Thermoplastic composites——Recyclable and rapid processing[J].FRP,2012(2):39–45.
[8]Lyu M Y,Choi T G.Research trends in polymer materials for use in lightweight vehicles[J].International Journal of Precision Engineering&Manufacturing,2015,16(1):213–220.
[9]Soutis C.Fibre reinforced composites in aircraft construction[J].Progress in Aerospace Sciences,2005,41(2):143–151.
[10]Rikiarie D,Malzinos P,Larena A,et al.Use of silane agents and poly(propylene-g-maleic anhydride)copolymer as adhesio n promoters in glass fiber/polypropylene composites[J].Journal of Applied Polymer Science,2001,81:701–709.
[11]Qiu W L,Mai K,Zeng H.Effect of macromolecular coupling agent on the property of PP/GF composites[J].Journal o f Applied Polymer Science,1998,71:1 537–1 542.
[12]王赫,刘亚青,张志毅,等.玻璃纤维表面处理技术的研究进展[J].绝缘材料,2007,40(5):35–37.Wang He,Liu Yaqing,Zhang Zhiyi,et al.Research progress of glass fiber surface treatment technology[J].Insulating Materials,2007,40(5):35–37.
[13]Wang H,Sun T,Peng C,et al.Effect of different silane coupling agents on cryogenic properties of silica-reinforced epoxy composites[J].High Performance Polymers,2016,30(1):.
[14]Topac O T,Gozluklu B,Gurses E,et al.Experimental and computational study of the damage process in CFRP composite beams under low-velocity impact[J].Composites Part A,2017,92:167–182.
[15]Pickering K L,Khimi S R,Ilanko S.The effect of silane coupling agent on iron sand for use in magnetorheological elastomers Part 1:Surface chemical modification and characterization[J].Composites Part A:Applied Science&Manufacturing,2015,68(68):377–386.