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时间:2020-03-26
《PVC秸秆类纤维复合材料性能.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第44卷,第10期工程塑料应用Vol.44,No.1062016年10月ENGINEERINGPLASTICSAPPLICATIONOct2016doi:10.3969/j.issn.1001-3539.2016.10.002*PVC/秸秆类纤维复合材料性能1,21,21,21,21,2刘丁宁,何春霞,常萧楠,付菁菁,王敏(1.南京农业大学工学院,南京210031;2.江苏省智能化农业装备重点实验室,南京210031)摘要:为比较不同秸秆类(芦苇秸秆、稻秸秆、麦秸秆)纤维对其制备复合材料性能的影响,以芦苇秸秆、稻秸秆、麦秸秆为填充材料,以聚氯乙烯(PVC)为
2、基体材料,采用挤出成型工艺制备3种PVC/秸秆类纤维复合材料。对3种秸秆纤维进行了成分分析,对它们制备的复合材料进行了力学性能和吸水性能测试,并对3种复合材料进行了FTIR分析,用SEM观察了复合材料拉伸断面微观结构。结果表明,3种秸秆类纤维中,芦苇秸秆的纤维素、半纤维素和木质素含量最高,其制备的PVC复合材料结合界面和力学性能最佳,PVC/芦苇秸秆纤维复合材料拉伸、弯曲和2冲击强度分别为36.79MPa,67.19MPa和7.01kJ/m,比PVC/麦秸秆纤维复合材料分别提高了104.62%,89.7%,99.72%。3种PVC/秸秆类纤维复合材料中PVC
3、/芦苇秸秆纤维复合材料24h吸水率最低,比PVC/麦秸秆纤维复合材料降低67.36%。关键词:秸秆纤维;聚氯乙烯;挤出成型;力学性能中图分类号:TB332文献标识码:A文章编号:1001-3539(2016)10-0006-06PropertiesofPVC/StrawFibersComposite1,21,21,21,21,2LiuDingning,HeChunxia,ChangXiaonan,FuJingjing,WangMin(1.CollegeofEngineeringNanjingAgriculturalUniversity,Nanjing2100
4、31,China;2.KeyLaboratoryofIntelligenceAgriculturalEquipmentinJiangsuProvince,Nanjing210031,China)Abstract:Inordertocomparingtheeffectsofdifferentstrawfibersonthepropertiesoftheirpolyvinylchloride(PVC)composites,threetypesofstrawfibers(i.e.,reedstraw,wheatstraw,andricestraw)weresepa
5、ratelyaddedintoPVCasfillingmaterialtoformthreetypesofPVCcompositesthroughtheextrusionmoldingprocess.Thecomponentsoftheplantfiberswereanalyzedandthemechanicalpropertyandwaterabsorbencycapabilityofthecompositesweretested.TheFTIRspectraanalysiswasconductedonthecomposites.Thesectionmic
6、rostructuresofthecompositeswereobservedusingascanningelectronmicroscope.Itisfoundthatofthethreetypesofstrawfibers,thereedstrawisrichestincellulose,hemicelluloseandlignin,anditscompositehasthebestbindinginterfaceandmechanicalpropertieswithtensilestrength,flexuralstrengthandimpactstr
7、engthat36.79MPa,267.19MPaand7.01kJ/m,whichis104.62%,89.7%and99.72%higherthanthatofthewheatstrawcompositerespectively.ThePVC/reedstrawcompositehasthelowest24hwaterabsorptionrateamongthem,whichis67.36%lowerthanthatofthewheatstrawcomposite.Keywords:strawfiber;polyvinylchloride;extrusi
8、onmoldingprocess;mechanica
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