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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and properties ofhigh-strength-high-moduluspolyimide cords/natural rubber composites
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Preparation and properties ofhigh-strength-high-moduluspolyimide cords/natural rubber composites

机译：高强度高模量聚酰亚胺帘线/天然橡胶复合材料的制备与性能

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摘要

High-strength-high-modulus polyimide (PI) cords reinforced natural rubber (NR) composites are prepared, and the PI cords are treated with resorcinol-formaldehyde-latex (RFL) adhesive to enhance the interfacial adhesion with NR matrix. The influence of RFL adhesive variables, such as the ratio of R/F and RF/L, on the adhesion between PI cords and NR is investigated. Furthermore, sorbitol glycidyl ether (SGE) and caprolactam blocked methylene diisocyanate (CBI) are adhered to the surface of the PI cords through a dip-coating procedure to introduce epoxy and NCO groups and graft with more RFL adhesive. The H pull-out force of SGE/CBI-RFL treated PI cords/NR composites reaches as high as 193.9 N, which is 580% higher than that of untreated PI ones. Additionally, the SGE/CBI-RFL treated PI cords/NR composites exhibit superior adhesion, aging, and fatigue resistance together with better mechanical properties as compared with SGE/CBI-RFL treated poly(para-phenylene terephtalamide) (PPTA) cords/NR composites.
机译：制备了高强度、高模量聚酰亚胺（PI）帘线增强天然橡胶（NR）复合材料，并用间苯二酚-甲醛胶乳（RFL）胶粘剂对PI帘线进行处理，以增强其与NR基体的界面粘结力。研究了R/F和RF/L等RFL粘合剂变量对PI帘线与NR粘合性能的影响。此外，山梨醇缩水甘油醚（SGE）和己内酰胺封端的亚甲基二异氰酸酯（CBI）通过浸涂程序粘附到PI帘线表面，引入环氧基和NCO基团，并与更多RFL粘合剂接枝。SGE/CBI-RFL处理的PI帘线/NR复合材料的H拔出力高达193.9N，比未处理的PI帘线高580%。此外，与经SGE/CBI-RFL处理的聚对苯撑对苯二甲酰胺（PPTA）帘线/NR复合材料相比，经SGE/CBI-RFL处理的PI帘线/NR复合材料具有优异的附着力、耐老化性和耐疲劳性，以及更好的机械性能。

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