加固用環(huán)氧結(jié)構(gòu)膠耐熱性能研究
彭勃1，余益斌1，單遠銘2
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彭勃1，余益斌1，單遠銘2（1 湖南大學(xué)土木工程學(xué)院，長沙 410082；2 湖南固特邦土木技術(shù)發(fā)展有限公司，長沙 410205）[摘要] 采用不同溫度下力學(xué)性能、熱變形溫度和玻璃化轉(zhuǎn)變溫度三種方法，考察了兩種環(huán)氧建筑結(jié)構(gòu)膠的耐熱性能，并對結(jié)果進行了比較。試驗結(jié)果表明：結(jié)構(gòu)膠的三種不同耐熱性能測試方法之間存在一定聯(lián)系，溫度升高會顯著降低結(jié)構(gòu)膠的強度和抗形變能力，熱變形溫度（B法）和玻璃化轉(zhuǎn)變溫度均相近的兩種結(jié)構(gòu)膠，高溫力學(xué)性能卻存在顯著差別。[關(guān)鍵詞] 結(jié)構(gòu)膠；耐熱性能；環(huán)氧樹脂；熱變形溫度；玻璃化轉(zhuǎn)變溫度中圖分類號：TU581-2 文獻標識碼：A 文章編號：1002-848X(2012)12-0108-04Study on the heat resistance performance of structural epoxy adhesivePeng Bo1, Yu Yibin1, Shan Yuanming2(1 College of Civil Engineering, Hunan University, Changsha 410082, China; 2 Hunan Goodbond Construction Technic Development Co., Ltd., Changsha 410205, China)Abstract: The heat resistance performance of two structural epoxy adhesives was measured and contrasted by three methods: mechanical properties at different temperatures, heat deformation temperature, glass transition temperature. The test results show that there are connections between three methods, higher temperature will significantly reduce the strength and deformation-resistance ability of structural adhesive, structural adhesive with similar heat deformation temperature (B method) and glass transition temperature could have notable different mechanical properties at high temperature.Keywords: structural adhesive; heat resistance performance; epoxy resin; heat deformation temperature; glass transition temperature作者簡介：彭勃, 博士，教授, Email：pungbo@sina.com參考文獻［1］萬墨林.建筑結(jié)構(gòu)膠應(yīng)用中的若干問題及建議［J］.建筑結(jié)構(gòu)，2006,36（9）:22-23.［2］GB 50728-2011 工程結(jié)構(gòu)加固材料安全性鑒定技術(shù)規(guī)范［S］.北京:中國建筑工業(yè)出版社, 2011.［3］Proposal for a standard for acceptance tests and verification of epoxy bonding agents for segmental construction［S］. London: Cement and Concrete Association, 1978.［4］何曼君, 陳維孝, 董西俠. 高分子物理［M］.上海：復(fù)旦大學(xué)出版社,2000.［5］FERRIER E, LAGARDE G, HAMELIN P. Concrete beams reinforced by fibre-reinforced plastics: the effect of temperature on the adhesive layer［J］. Composites Science and Technology, 2001, 61(3):425-431.［6］張繼文,呂志濤,滕錦光, 等.外部粘貼碳纖維或鋼板加固梁中粘結(jié)界面應(yīng)力分析［J］.工業(yè)建筑，2001，31（6）：1-4.［7］歐陽煜,錢在茲.粘貼片材加固混凝土梁的粘結(jié)剪應(yīng)力分析［J］.工程力學(xué)，2000,17（6）：92-97.［8］施士昇.混凝土的抗剪強度、剪切模量和彈性模量［J］.土木工程學(xué)報,1999,32(2): 47-52.［9］FERRIER E, MICHEL L, JURKIEWIEZ B. Creep behavior of adhesives used for external FRP strengthening of RC structures［J］. Construction and Building Materials, 2011, 25(2):461-467.
