锦纶纤维的络合改性及锦纶/天然橡胶复合材料性能的研究  

Complex modification of polyamide fiber and the research of polyamide fiber reinforced natural rubber composites

作　　者：金仲[1,2] 吴晓宇[1,2] 罗筑[1,2] 李斌[1,2] 向坤[1,2] 洪波[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵阳550025 [2]国家复合改性聚合物材料工程技术研究中心,贵阳550014

出　　处：《化工新型材料》2015年第4期149-151,154,共4页New Chemical Materials

基　　金：黔科合重大专项字(2013-6016)

摘　　要：采用氯化钙-甲醇溶液对锦纶66纤维进行络合改性,再用环氧树脂/固化剂深入改性,将处理后的纤维、端羟基液体聚异戊二烯橡胶以及天然橡胶制成母炼胶,制备锦纶纤维增强天然橡胶复合材料。考察了纤维的改性效果,和氯化钙浓度对复合材料静态力学性能以及动态力学性能的影响。SEM、XRD检测表明氯化钙-甲醇溶液对锦纶纤维的络合改性效果明显,从而改善了纤维表面与复合物基体间的界面粘接。力学性能显示当氯化钙溶液的浓度分别为2wt%和4wt%时,300%定伸应力和撕裂强度(纵向)各有最优值。DMA结果表明锦纶纤维经过改性后会增大复合材料的储能模量和损耗模量,减小损耗因子峰值,从而提高了纤维与橡胶基体的界面粘合。Polyamide fiber（AF）was modified with calcium chloride-carbinol solution,then epoxy resin/2E4MZ was used for modification on the basis of complexing treatment, then master batch was made by incorporating mixture of the modified fiber, LIR and natural rubber. After that, polyamide fiber reinforced natural rubber composites was prepared. The effects of polyamide fiber modification, concentration of calcium chloride on the mechanical properties of the composites were investigated. The results of SEM and XRD showed that the complex modification on polyamide fiber made the adhe- sive interface force between fiber surface and composite matrix prominent. Mechanical properties revealed that stress elon- gation at 3000//oo and tear strength had optimal value when the concentration of calcium chloride was 2wt~ and 4wt~//00, re- spectively. DMA revealed that AF/NR composites had higher storage modulus and loss modulus and lower peak of loss fac- tor after complexing treatment of polyamide fiber,implying that the interracial adhesion was enhanced.

关 键 词：锦纶纤维 天然橡胶 络合改性 力学性能 

分 类 号：TQ342.1[化学工程—化纤工业]