通过浸胶时间与附胶率及H抽出力关系的分析得到:涤纶帘子线的最佳预浸胶时间120 s,最佳RFL浸胶时间180 s.进而采用正交试验对涤纶帘子线二次浸胶工艺进行研究.结果表明,各因素对帘子线/橡胶粘合性能的影响大小顺序为:解封温度＞定型温度＞定型时间＞解封时间＞w(环氧)∶w(水)(质量比).同时方差分析显示,解封温度、定型温度及定型时间对试验结果有显著影响.SEM结果显示二次浸胶处理后胶液明显附着在了帘子线表面,H抽出表明为典型的内聚破坏.%In this paper, the best pre-dipping time is found to be 120 s and the best RFL dipping time is 180 s based on the analysis of the relationship between dipping time and H-extraction force. Then, the two-step process for dipping PET cords is studied via the orthogonal test. The influence of technological parameters on the final adhesive performance is listed in descending order as follows: deblocking tempera-ture>heat setting temperature>heat setting time>deblocking time>w (epoxy) :w (water) (mass ratio). Meanwhile, variance analysis demonstrated that the deblocking temperature, heat setting temperature, and heat setting time had remarkable effects on adhesive properties. SEM images show that the glue adhered firmly to the surface of the PET after the two-step treatment, and the fracture during H-extraction can be attributed to typical cohesive failure.
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