摘要
本文研究实验合成聚氨酯改性环氧树脂在室温条件下固化情况。通过红外光谱图的检测手段,准确把握反应进行的程度;利用万能试验机测试胶粘剂的力学性能。通过添加纳米填料提高胶粘剂体系的拉伸剪切强度。实验结果显示当固化剂含量50phr时,其室温下固化时间为60mins,拉伸剪切强度可达到10.31MPa。当添加1%纳米填料二氧化硅时,其拉伸剪切强度达到14.10MPa。其韧性明显比环氧树脂韧性好。
This paper studied the experimental synthesis of polyurethane modified epoxy resin cured at room temperature.Through infrared spectrum detection means,it could accurately grasp the degree of reaction;and it could make the use of universal testing machine to test the mechanical properties of adhesives.The tensile shear strength of the adhesive system was improved by adding nano filler.The results show that when the curing agent content is 50 phr,the curing time is 60 mins at room temperature and the tensile shear strength can reach 10.31 MPa.When 1%nano filler silica is added,the tensile shear strength reaches 14.10 MPa.Its toughness is better than the toughness of epoxy resin.
作者
杨涛
范广宏
任明伟
Tao Yang;Guanghong Fan;Mingwei Ren(Advanced Manufacture Technology Center China Academy of Machinery Science&Technology,Beijing)
基金
国家重点研发计划,课题编号2016YFD0700603,零部件轻量化与密封副耐磨防腐技术
江苏省重点研发计划,项目编号BE2015007,碳纤维车身成形全流程关键技术及智能装备开发
机械科学研究总院技术发展基金,项目编号,211525Q9,车用复合材料胶接连接技术研究。
