| 适用于低温固化的低黏度高强度环氧树脂结构胶 |
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| 引用本文： | 乔敏,俞寅辉,高南箫,冉千平,刘加平.适用于低温固化的低黏度高强度环氧树脂结构胶[J].中国胶粘剂,2012(7):39-42. |
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| 作者姓名： | 乔敏 俞寅辉 高南箫 冉千平 刘加平 |
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| 作者单位： | 江苏省建筑科学研究院有限公司,高性能土木工程材料国家重点实验室;江苏博特新材料有限公司 |
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| 摘 要： | 以碳酸丙烯酯(PC)为活性稀释剂、自制增韧型421固化剂/快固型DETA(二乙烯三胺)固化剂作为复合固化剂,制备环氧树脂(EP)结构胶。研究结果表明:当m(EP)∶m(PC)∶m(421)∶m(DETA)=100∶20∶24∶6.0时,EP结构胶的初始黏度(60 mPa.s)相对较低,其强度和韧性俱佳(拉伸强度为45 MPa、压缩强度为70 MPa和钢/钢剪切强度为12.0 MPa);该EP结构胶可低温固化(5℃或常温固化7 d后的拉伸强度基本一致),也是一款适用于冬季施工的低黏度高强度EP结构胶。
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| 关 键 词： | 环氧树脂 结构胶 低黏度 高强度 低温固化 |
Epoxy resin structural adhesive with low viscosity and high strength for curing at low temperature |
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| Qiao Min,Yu Yinhui,Gao Nanxiao,Ran Qianping,Liu Jiaping.Epoxy resin structural adhesive with low viscosity and high strength for curing at low temperature[J].China Adhesives,2012(7):39-42. |
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| Authors: | Qiao Min Yu Yinhui Gao Nanxiao Ran Qianping Liu Jiaping |
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| Affiliation: | 1,2(1.State Key Laboratory of High Performance Civil Engineering Materials,Jiangsu Research Institute of Building Science Co.,Ltd.,Nanjing 210008,China;2.Jiangsu Bote New Materials Limited Company, Nanjing 210008,China) |
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| Abstract: | With propylene carbonate(PC) as reactive diluent,self-made toughening 421 curing agent/fast curing DETA(diethylenetriamine) curing agent as composite curing agent,an EP(epoxy resin) structural adhesive was prepared.The research results showed that the EP structural adhesive with lower viscosity and higher strength could be used in winter because its initial viscosity(60 mPa·s) was reversely lower,strength and toughness(tensile strength at 45 MPa,compressive strength at 70 MPa and steel/steel shear strength at 12.0 MPa) were simultaneously better when mass ratio of m(EP)∶m(PC)∶m(421)∶m(DETA) was 100∶20∶24∶6.0,and the EP structural adhesive could be cured at low temperature(tensile strength was basically same after curing 7 d at 5 ℃ or at room temperature). |
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| Keywords: | epoxy resin(EP) structural adhesive low viscosity high strength curing at low temperature |
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