聚丙烯纤维/连续玻纤混纺织物增强复合材料的结构与性能研究
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摘要
通过表面化学改性法对聚丙烯纤维(PPF)和连续玻纤(CGF)进行表面处理,分别实现表面羧基化和氨基化,随后采用混纺编织法制备PPF/CGF混纺织物,最后经压制成型制得复合材料。同时详细研究了CGF含量对PPF/CGF复合材料结构与性能的影响。结果表明:表面改性能有效增大复合材料的界面结合力。随着CGF含量的增大,复合材料的拉伸强度和弯曲强度先增大后减小,储能模量和损耗模量均呈增大趋势,聚丙烯(PP)半结晶时间明显缩短,结晶速率逐渐加快,结晶过程对温度的依赖性减小。此外,复合材料在NaOH溶液中的吸湿率高于NaCl溶液。
Polypropylene fi ber(PPF) and continuous glass fi ber(CGF) were treated by surface chemical modification to achieve surface carboxylation and amination respectively, and then PPF/CGF composites were prepared via blended weaving and compression-molding method. The infl uences of CGF content on structure and properties of the PPF/CGF composites were studied in detail. The results show that the surface modifi cation could effectively increase the interfacial bonding force of the composites. With the increase of CGF content, the tensile strength and fl exural strength of the PPF/CGF composites increase fi rst and then decrease, and the storage modulus and loss modulus increase. The half-crystallization time of polypropylene(PP) reduces obviously, the crystallization rate accelerates, and the dependence of the crystallization process on temperature reduces. In addition, the water absorption of the composite in NaOH solution is higher than that of NaCl solution.
Polypropylene fi ber(PPF) and continuous glass fi ber(CGF) were treated by surface chemical modification to achieve surface carboxylation and amination respectively, and then PPF/CGF composites were prepared via blended weaving and compression-molding method. The infl uences of CGF content on structure and properties of the PPF/CGF composites were studied in detail. The results show that the surface modifi cation could effectively increase the interfacial bonding force of the composites. With the increase of CGF content, the tensile strength and fl exural strength of the PPF/CGF composites increase fi rst and then decrease, and the storage modulus and loss modulus increase. The half-crystallization time of polypropylene(PP) reduces obviously, the crystallization rate accelerates, and the dependence of the crystallization process on temperature reduces. In addition, the water absorption of the composite in NaOH solution is higher than that of NaCl solution.
引文
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[2]Peyda S,Morshedian J,Karbalaei-Bagher M,et al.Anovel technique in the foaming process of EPDM/PP via microwave radiation:The effect of blend compatibilization and additive encapsulation[J].RSC Advances,2016,6(84):81400-81 407.
[3]黄安荣,韦良强,孙静,等.多壁碳纳米管含量对聚丙烯/多壁碳纳米管介电复合材料性能的影响研究[J].化工新型材料,2018,46(3):58-61.
[4]Jolfaei A F,Gavgani J N,Jalali A,et al.Effect of organoclay and compatibilizers on microstructure,rheological and mechanical properties of dynamically vulcanized EPDM/PPelastomers[J].Polymer Bulletin,2015,72(5):1 127-1 144.
[5]Pinheiro L A,Bittencourt C S,Canevarolo S V.Real time assessment of the compatibilization of polypropylene/polyamide 6 blends during extrusion[J].Polymer Engineering and Science,2010,50(4):826-834.
[6]Razak N C A,Inuwa I M,Hassan A,et al.Effects of compatibilizers on mechanical properties of PET/PP blend[J].Composite Interfaces,2013,20(7):507-515.
[7]李浩,邵将,张玡珂,等.连续玻璃纤维/丙纶纤维混纺织物增强聚丙烯复合材料模压成型工艺[J].塑料工业,2017,45(11):134-138.
[8]刘国刚,马伊,梁文斌,等.长玻纤增强聚丙烯复合材料性能研究[J].塑料科技,2017,45(10):25-29.
[9]吴亚东,沈春银,万海青,等.玻纤毡增强聚丙烯复合材料的增容及力学性能[J].工程塑料应用,2017,45(6):1-6.
[10]Etcheverr Y M,Barbosa S E.Glass fiber reinforced polypropylene mechanical properties enhancement by adhesion improvement[J].Materials,2012,5(6):1 084-1 113.
[11]段召华,陈弦.长玻纤增强复合材料的浸渍技术的发展研究[J].塑料工业,2008,36(s1):221-224.
[12]Mohanty A K,Drzal L T,Misra M.Engineered natural fiber reinforced polypropylene composites:Influence of surface modifications and novel powder impregnation processing[J].Journal of Adhesion Science and Technology,2002,16(8):999-1 015.
[13]杨芳,刘钰馨,莫羡忠,等.弹性体增韧聚丙烯研究进展[J].塑料科技,2015,43(4):106-110.
[14]栗晓飞,张琦.浸泡腐蚀对复合材料导电性能和力学性能的影响[J].材料工程,2009(2):1-5.