摘要
为进一步提高芳纶纤维/橡胶复合材料的界面黏合性能,在传统“二浴”法浸渍间苯二酚-甲醛-胶乳(RFL)的基础上,分别在预处理液、RFL浸胶液中加入芳纶纳米纤维(ANF),研究ANF的添加工艺和用量对芳纶纤维/橡胶复合材料界面黏合性能的影响。结果表明,在预处理液中仅添加0.05wt%ANF,H抽出力为209.0 N,剥离力为19.8 N/根,动态黏合疲劳寿命9829次,比未增强体系分别提高18.1%、14.4%和41.0%;在RFL浸胶液中添加0.15wt%ANF,H抽出力为206.5 N,剥离力为20.1 N/根,动态黏合疲劳寿命8095次,比未增强体系分别提高15.9%、16.1%和16.1%。在预处理体系中添加ANF可更有效地提高动态黏合性能,原因在于ANF与芳纶纤维、预处理液中的异氰酸酯之间产生良好的化学作用,有利于界面处模量过渡,提高应力传递效率。
In order to further improve the interfacial adhesive properties of aramid fiber/rubber composites,based on the traditional"two-step"method was used to dip resorcinol-formaldehyde-latex(RFL),and aramid nanofibers(ANF)was added to the predipping solution and RFL dipping solution,respectively.The effects of addition process and content of ANF on the interfacial adhesion properties of aramid fiber/rubber composites were studied.The results show that when only 0.05wt%ANF is added to the predipping solution,the H pull-out force is 209.0 N,the peel force of single fiber is 19.8 N,and the dynamic fatigue life is 9829 times,which are 18.1%,14.4%and 41.0%higher than those of the unreinforced system.Added 0.15wt%ANF to the RFL dipping solution,the H pull-out force is 206.5 N,the peel force of single fiber is 19.8 N,and the dynamic fatigue life is 8095 times,which are 15.9%,16.1%and 16.1%higher than those of the unreinforced system.Adding ANF to the pretreatment system can effectively improve the dynamic adhesion properties,because the ANF has a good chemical effect with aramid fiber and isocyanate in the predipping solution,which is beneficial to the modulus transition at the interface and improves the stress transfer efficiency.
作者
翟振强
李英哲
黄伟
杜德松
宁南英
田明
王文才
张立群
ZHAI Zhenqiang;LI Yingzhe;HUANG Wei;DU Desong;NING Nanying;TIAN Ming;WANG Wencai;ZHANG Liqun(State Key Lab of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China;Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2022年第9期4327-4336,共10页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(51790501,51833002)。
关键词
芳纶纳米纤维
纳米增强
芳纶纤维
橡胶复合材料
界面黏合性能
aramid nanofibers
nano-reinforced
aramid fibers
rubber composites
interfacial adhesive properties
