文章摘要
Silane Coupling Agent KH550 Modified Bio-Based PA56 Fiber and Its Adhesion Performance with Rubber Material
Received:October 11, 2024  Revised:October 11, 2024
DOI：10.12136/j.issn.1000-890X.2026.08.0563
Key Words: bio-based PA56 fiber；surface modification；silane coupling agent；rubber material；interfacial adhesion performance
Author NameAffiliationE-mail
YANG Tianci Beijing University of Chemical Technology 2023200595@buct.edu.cn 
DENG Sai* Sichuan EM Technology Co.，Ltd clyjqx@bift.edu.cn 
JIA Qingxiu3 Beijing Institute of Fashion Technology  
ZHANG Liqun Xi’an Jiaotong University  
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Abstract:
      The surface modification of bio-based PA56 fiber（hereinafter referred to as PA56 fiber） was carried out by using silane coupling agent KH550（hereinafter referred to as KH550），and the modified PA56 fiber was impregnated with RFL，and then modified PA56 fiber/rubber composites were obtain，the effects of KH550 modification on the chemical structure，microscopic morphology，thermal stability，tensile properties and interfacial adhesion performance with rubber material were studied.The results showed that KH550 could be successfully grafted onto the surface of PA56 fiber.Compared with unmodified PA56 fiber，the modified PA56 fiber had unchanged tensile strength but a significant increase in elongation at break.As the increase of KH550 mass fraction，the dip pick-up of RFL impregnated PA56 fiber and the H-pullout force of PA56 fibers/rubber composite showed a trend of first increasing and then decreasing.When the mass fraction of KH550 was 5%，the H-pullout force of PA56 fiber/rubber composite was 134.84 N，which was 35% higher than that of unmodified PA56 fiber/rubber composite，this indicated that the surface modification with KH550 could significantly improve the interfacial adhesion performance between PA56 fiber and rubber material.
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