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| Environmental Adaptability of Adhesive EA9396 and HT6119 Used in Helicopter Skin Repair |
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| DOI：10.7643/issn.1672-9242.2023.05.010 |
| KeyWord:adhesives environmental adaptability tensile shear properties EA9396 HT6119 adsorption theory |
| Author | Institution |
| YANG Zong-yu |
Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| LI Yue-wei |
Chengdu State-owned Jinjiang Machinery Factory, Chengdu , China |
| DENG Qing-zhu |
Chengdu State-owned Jinjiang Machinery Factory, Chengdu , China |
| SHEN Kun |
Chengdu State-owned Jinjiang Machinery Factory, Chengdu , China |
| MENG Xian-li |
Chengdu State-owned Jinjiang Machinery Factory, Chengdu , China |
| CHEN Xin-yue |
Chengdu State-owned Jinjiang Machinery Factory, Chengdu , China |
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| Abstract: |
| The work aims to study the environmental adaptability of adhesives by testing the bond strength of different adhesives at different temperature and in different media, to provide process reference and data support for the adhesive maintenance of helicopter composite materials. Two kinds of adhesives were selected:HYSOL EA9396 (Henkel, USA) and HUITIAN HT6119 (Huitian, China). The basic properties of both adhesives such as viscosity, service life, volatility, glass transition temperature, tensile strength, bending strength and compression strength were tested. Then, the tensile shear properties were tested at different temperature and in different media (ordinary atmosphere, water, aviation hydraulic oil, RP-3 kerosene, salt spray and humid heat) by metal-metal bonding. The tensile shear properties of both adhesives decreased with the temperature increasing. When the temperature was lower than 121 ℃, the tensile shear properties of HT6119 adhesives were better than those of EA9396 adhesives. When the temperature was between 121 ℃ (inclusive) and 149 ℃, the tensile shear properties of EA9396 adhesives were better than those of HT6119 adhesives. When the temperature rose to 177 ℃, the properties of both adhesives were similar. Both adhesives had good bonding properties in different media. The tensile shear properties of HT6119 adhesives were slightly lower than those of EA9396 adhesives under the conditions of aviation hydraulic oil and salt spray, but better than those of EA9396 adhesives under other environmental conditions. The tensile shear properties of EA9396 and HT6119 adhesives decrease with the increasing temperature. The adhesive properties of EA9396 are better at medium and low temperature, and the adhesive properties of HT6119 are better at high temperature. The adhesive properties of the two kinds of adhesives do not decrease significantly in typical environmental media (compared with ordinary atmospheric environment), but the tensile shear properties of the two kinds of adhesives in different media are different. Therefore, the adhesives can be selected reasonably according to the specific service environment. |
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