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时间:2020-03-26
《S–GF单向复合材料缠绕成型工艺及性能.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43卷,第12期工程塑料应用Vo1.43.No.12542015年12月ENGINEERINGPLASTICSAPPLICATIONDec.2O15doi:lO.3969/j.issn.1001-3539.2015.12.012改性EP/S—GF单向复合材料缠绕成型工艺及性能古张丹丹,王汝敏,江浩,楚桥,海一飞(西北工业大学理学院应用化学系,陕西省高分子科学与技术重点实验室,西安710129)摘要:以4,4’一二氨基二苯甲烷、苯酚和甲醛为原料合成.2-胺型苯并恶嗪(MDA-BOZ),并用其改性
2、环氧树脂(EP1。采用湿法缠绕成型方法制备单向高强玻璃纤维(S-GF)增强改性EP基复合材料。用外推法和凝胶化时间法确定了复合材料的成型工艺,并测试了其在室温和高温下的拉仲强度、弯曲强度、层间剪切强度等力学性能。与EP/4,4’一二氨基二苯砜fDDS)/S—GF复合材料相比,EP/MDA—BOz/DDS/S—GF复合材料综合力学性能有较大提高。EP/MDA—B0z/DDS/S_GF复合材料室温弯曲强度达1428-3MPa,层间剪切强度达79.92MPa,纵向拉伸强度l134.1MPa,拉伸弹性模
3、量为40.15GPa。复合材料在100cC时,弯曲强度保持率为78.95%,层间剪切强度保持率为81.06%。扫描电子显微镜分析发现,改性树脂与玻璃纤维界面粘绔陛较好。关键词:环氧树脂;苯并恶嗪;单向纤维;湿法缠绕;复合材料中图分类号:TQ327.1文献标识码:A文章编号:1001.3539(2015)12—0054.06WindingMoldingProcessandPropertiesofS-GFReinforcedModifiedEPUnidirecti0nalCompositeZhang
4、Dandan,WangRumin,JiangHao,ChuQiao,HaiYifei(ShaanxiKeyLaboratoryofMacromolecularScienceandTechnology,DepartmentofAppliedChemistry,SchoolofScience,NorthwesternPolytechnicalUniversity,Xi’an710129,China)Abstract:Thediamine—basedbenzoxazine(MDA-BOZwassynt
5、hesizedusingtherawmaterialof4,4’一diaminodiphenylmethane,phenolandformaldehyde,andthentheepoxyresinwasmodifiedbyMDABOZ.Unidirectionalfibercompositeswerepreparedwiththemethodofwetwindingmolding.Themoldingprocessofthecompositesmaterialwasresearchedusing
6、extrapolationmethodandgeltimemethod.Thetensile,bending,inter—laminarshearperformancebothatroomtemperatureandhightemperatureofthecompositesweretested.ComparedwiththeEP/4,4’一diaminodiphenylsulfone(DDS)/S—GFcomposites,theEP/MDA-BOZ/DDS/S-GFcompositeshav
7、ebettercomprehensivemechanicalproperties.Atroomtemperature,thebendingstrengthofEP/MDA-BOZ/DDS/S-GFcompositeis1428.3MPa,theinter-laminarshearstrengthis79.92MPa,thetensilestrengthinlongitudinaldirectionis1134.1MPa,themodulusofelasticityintensionis40.15
8、GPa.Atthetemperatureof1O0℃,theretentionrateofbendingstrengthis78.95%,theretentionrateofinter-laminarshearstrengthis81.06%.Thescanningelectronmicroscopeshowsthattheinterfacecohesivenessbetweenthemodifiedresinandglassfiberisverygood.Keywords:epoxyresin
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