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首页> 外文期刊>Journal of Applied Polymer Science >Long-term development of thermophysical and mechanical properties of cold-curing structural adhesives due to post-curing
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Long-term development of thermophysical and mechanical properties of cold-curing structural adhesives due to post-curing

机译：由于后固化，冷固化结构胶的热物理和机械性能的长期发展

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摘要

The long-term changes in the thermophysical and mechanical properties of a cold-curing structural epoxy adhesive were investigated by accelerating the curing reaction by post-curing at elevated temperatures. Experimental data concerning the glass transition temperature for periods of up to 7 years and tensile strength and stiffness measurements could be extrapolated for a period of up to 17 years. An existing model for the long-term development of concrete properties was modified for the prediction of the long-term mechanical properties of adhesives. The applicability of the acceleration procedure and the new model was confirmed by several verification procedures. Structural adhesives exhibit significant increases in glass transition temperature, strength and stiffness over the long term provided that joints are adequately sealed and protected from humidity and UV radiation.
机译：通过在高温下通过后固化来加速固化反应，研究了冷固化结构环氧胶粘剂的热物理和机械性能的长期变化。可以推断出长达7年的玻璃化转变温度以及抗张强度和刚度测量的实验数据，长达17年。修改了混凝土性能长期发展的现有模型，以预测胶粘剂的长期机械性能。加速程序和新模型的适用性已通过多项验证程序得到确认。长期而言，只要接合处已充分密封并受到湿气和紫外线照射，结构胶粘剂的玻璃化转变温度，强度和刚度就会显着提高。

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