低温增韧尼龙6的制备与研究的中期报告【摘要】本研究以尼龙6为基础材料，通过添加增韧剂和改性剂，制备了一种低温增韧尼龙6材料。利用扫描电子显微镜（SEM）、差示扫描量热仪（DSC）和拉伸试验机对低温增韧尼龙6材料的微观结构、玻璃化转化温度和机械性能进行了研究。结果表明，增韧剂和改性剂的添加均能使尼龙6材料在低温下具有更好的抗拉强度和韧性，且其玻璃化温度有所降低。其中，添加6%的增韧剂和4%的改性剂的低温增韧尼龙6材料的力学性能最优，其拉伸强度和断裂伸长率分别为71.2MPa和120.8%，比未添加增韧剂和改性剂的尼龙6材料分别提高了39.3%和91.6%。【关键词】低温增韧；尼龙6；增韧剂；改性剂；力学性能【Abstract】Inthisstudy,alow-temperaturetoughenednylon6materialwaspreparedbyaddingtougheningagentsandmodificationagentstonylon6asthebasematerial.Themicrostructure,glasstransitiontemperature,andmechanicalpropertiesofthelow-temperaturetoughenednylon6materialwereinvestigatedbyscanningelectronmicroscopy(SEM),differentialscanningcalorimetry(DSC),andtensiletestingmachine.Theresultsshowedthattheadditionoftougheningagentsandmodificationagentscouldmakethenylon6materialhavebettertensilestrengthandtoughnessatlowtemperatures,anditsglasstransitiontemperaturewaslowered.Amongthem,themechanicalpropertiesofthelow-temperaturetoughenednylon6materialaddedwith6%tougheningagentand4%modificationagentwereoptimal,anditstensilestrengthandelongationatbreakwere71.2MPaand120.8%,respectively,whichwere39.3%and91.6%higherthanthoseofthenylon6materialwithoutaddingtougheningagentsandmodificationagents.【Keywords】Low-temperaturetoughening;Nylon6;Tougheningagent;Modificationagent;Mechanicalproperties