To improve the interface strength between aramid fiber (PPTA) and NBR composites, the silane coupling agent (A172) and graphene oxide (GO) were used to have the graft modification treatment to the aramid fiber surface and analyze the chemical construction, surface topography and H-pull test of aramid fiber before and after treatment. The microstructure of the pull out fiber surface and section of the rubber-based aramid fiber reinforced polymer(AFRP) was analyzed by SEM. The results show that the oxygen-containing groups on the fiber surface are increased and the chemical activity is improved after the secondary surface modification to the aramid fiber is conducted with the silane coupling agent and GO. The obvious attachments can be found on the surface after treatment. The fiber structure has no obvious damage and its surface roughness is improved substantially. The H-pull test after treatment increases with an optimal effect of aramid fiber H-pull test after the secondary modification with GO (improved to 48.748 MPa from 18.192 MPa). The interface bonding strength between the aramid fiber and NBR is improved dramatically, thus confirming the effectiveness of the silane coupling agent and GO in the secondary modification to the aramid fiber, which provides reference for the study of the performance of the rubber-based AFRP.
刘龙, 梁森, 王得盼, 周越松, 郑长升. 硅烷偶联剂及氧化石墨烯二次改性对芳纶纤维界面性能的影响[J]. 材料工程, 2022, 50(1): 145-153.
Long LIU, Sen LIANG, Depan WANG, Yuesong ZHOU, Changsheng ZHENG. Effect of secondary modification of silane coupling agent and graphene oxide on interfacial properties of aramid fiber. Journal of Materials Engineering, 2022, 50(1): 145-153.
ZHU D J , ZHANG X T , ZHANG H A . Effects of strain rate and temperature on mechanical properties of Kevlar 49 aramid fabric reinforced epoxy polymers under dynamic tensile loading[J]. Acta Materiae Compositae Sinica, 2016, 33 (3): 459- 468.
CHEN H , HU L , WU Z W , et al. Development of flame retardant properties of aramid bulletpro of material[J]. Hi-Tech Fiber and Application, 2019, 44 (5): 61- 64.
LV J , CHENG Z , WU H , et al. In-situ polymerization and covalent modification on aramid fiber surface via direct fluorination for interfacial enhancement[J]. Composites: Part B, 2019, 182, 107608.
LU Z , DANG W , ZHAO Y , et al. Toward high-performance poly(para-phenylene terephthalamide) (PPTA)-based composite paper via hot-pressing: the key role of partial fibrillation and surface activation[J]. RSC Advances, 2017, 7 (12): 7293- 7302.
ZHANG M L , SHEN Y W , WANG R , et al. Cold plasma treatment and aging properties of aramid fiber[J]. Journal of Textile Research, 2018, 39 (11): 73- 78.
LU Z , HU W , XIE F , et al. Argon low-temperature plasma modification of chopped aramid fiber and its effect on paper performance of aramid sheets[J]. Journal of Applied Polymer Science, 2017, 134 (14): 1097- 4628.
XI M , LI Y L , SHANG S Y , et al. Surface modification of aramid fiber by air DBD plasma at atmospheric pressure with continuous on-line processing[J]. Surface and Coatings Technology, 2009, 202 (24): 6029- 6033.
XING L , LIU L , HUANG Y , et al. Enhanced interfacial properties of domestic aramid fiber-12 via high energy gamma ray irradiation[J]. Composites: Part B, 2015, 69, 50- 57.
XING L X , LIU L , HE M , et al. Effect of different graft polymerization systems on surface modification of aramid fibers with Γ-ray radiation[J]. Advanced Materials Research, 2013, 658, 80- 84.
LIU L , HUANG Y D , ZHANG Z Q , et al. Ultrasonic modification of aramid fiber-epoxy interface[J]. Journal of Applied Polymer Science, 2010, 81 (11): 2764- 2768.
LIU L , ZHANG X , HUANG Y D , et al. Effect of ultrasonic treatment on surface characteristics of aramid[J]. Acta Materiae Compositae Sinica, 2003, 20 (2): 35- 40.
PENG T , CAI R Q , CHEN C F , et al. Surface modification of para-aramid fiber by direct fluorination and its effect on the interface of aramid/epoxy composites[J]. Journal of Macromolecular Science: Part B, 2012, 51 (3): 538- 550.
LI Y B , CAO N N , ZHENG Y Y , et al. Preparation and properties of composites of R-PET and surface modified aramid fiber[J]. Journal of Materials Engineering, 2018, 46 (6): 113- 119.
DENG T , ZHANG G , DAI F , et al. Mild surface modification of para-aramid fiber by dilute sulfuric acid under microwave irradiation[J]. Textile Research Journal, 2017, 87 (7): 799- 806.