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环氧建筑结构胶冬季施工性能研究
作者：韩煜，王玉卓，姚源渊
（河南工业职业技术学院，河南 南阳 473009）
摘要：在-5 ℃条件下，研究了促进剂（DMP-30）、气相白炭黑、水泥、硅粉、石棉纤维及偶联剂用量对6002环氧胶粘剂适用期、流淌性能、力学性能的影响，制备了冬季低温施工条件下无需加热配胶，早期（1 d）抗压强度高的环氧建筑结构胶。试验结果表明：当m（6002环氧树脂）∶m（593固化剂）∶m（DMP-30促进剂）∶m（KH-550硅烷偶联剂）∶m（气相白炭黑）∶m（水泥）∶m（硅粉）∶m（石棉纤维）=100∶25∶1∶5∶1∶95∶95∶10时，制备的环氧建筑结构胶性能最优。适用期为90 min，触变性好、不挂流；1 d、14 d抗压强度分别为45、85 MPa，14 d抗拉强度为35 MPa，正拉粘结强度为4.5 MPa（且为混凝土内聚破坏），符合GB 50728—2011对建筑结构胶的性能要求。
关键词：环氧树脂；结构胶；低温；早强
中图分类号：TU58+1.3 文献标识码：A 文章编号：1001-702X（2017）08-0022-04
关键词：环氧树脂；结构胶；低温；早强
中图分类号：TU58+1.3 文献标识码：A 文章编号：1001-702X（2017）08-0022-04
Research on properties of epoxy building structural adhesive used in winter
HAN Yu，WANG Yuzhuo，YAO Yuanyuan
（Henan Polytechnic Institute，Nanyang 473009，China）
HAN Yu，WANG Yuzhuo，YAO Yuanyuan
（Henan Polytechnic Institute，Nanyang 473009，China）
Abstract：The novel epoxy building structural adhesive with high compressive strength of early stage（1 d） amd no need of
pre-heating before used at winter low temperature was prepared. Effect of the dosage of accelerator（DMP-30），fumed silica，cement，silicon powder，asbestos fiber and coupling agent on the working time，thixotropy，and mechanical properties of the 6002 epoxy adhesive under -5 ℃ condition was studied. Results show that the adhesive acquires its best properties when the mass ratio of 6002 epoxy resin，curing agent（593），accelerator（DMP-30），coupling agent（KH-550），fumed silica，cement，silicon powder and asbestos fiber is 100∶25∶1∶5∶1∶95∶95∶10. Its working time is 90 min，thixotropy is good，no sagging phenomenon appears，its compressive strength of 1d and 14 d is 45 MPa and 85 MPa respectively，its 14 d tensile strength is 35 MPa，and its bonding strength to concrete is 4.5 MPa，the failure mode was concrete cohesion failure. The prepared adhesive completely meets the property requirements in standard GB 50728—2011.
Key words：epoxy resin，structural adhesive，low temperature，early strength
pre-heating before used at winter low temperature was prepared. Effect of the dosage of accelerator（DMP-30），fumed silica，cement，silicon powder，asbestos fiber and coupling agent on the working time，thixotropy，and mechanical properties of the 6002 epoxy adhesive under -5 ℃ condition was studied. Results show that the adhesive acquires its best properties when the mass ratio of 6002 epoxy resin，curing agent（593），accelerator（DMP-30），coupling agent（KH-550），fumed silica，cement，silicon powder and asbestos fiber is 100∶25∶1∶5∶1∶95∶95∶10. Its working time is 90 min，thixotropy is good，no sagging phenomenon appears，its compressive strength of 1d and 14 d is 45 MPa and 85 MPa respectively，its 14 d tensile strength is 35 MPa，and its bonding strength to concrete is 4.5 MPa，the failure mode was concrete cohesion failure. The prepared adhesive completely meets the property requirements in standard GB 50728—2011.
Key words：epoxy resin，structural adhesive，low temperature，early strength