Effect of Surface Treatment on the Properties of Kevlar Fibers by a Novel Chemical Method

2012 ◽  
Vol 548 ◽  
pp. 29-33 ◽  
Author(s):  
Zhao Jia ◽  
Yan Gong Yang
Keyword(s):  
Interfacial Shear Strength ◽  
Breaking Strength ◽  
Epoxy Composites ◽  
Kevlar Fiber ◽  
Advanced Composites ◽  
Pull Out ◽  
Polar Groups ◽  
Surface Modified ◽  
Lower Production ◽  
Effect Of Surface

The surface of kevlar fiber was modified by phosphoric acid solutions (H3PO4) in this article. The structure and morphology of the modified fiber were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The results showed that some polar groups were introduced into the molecular structure of aramid fibers. The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP). The results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkbly improved after surface modification and the breaking strength has not been affected appreciably. It provided an efficient method to make the surface modified Kevlar fiber for the application for the advanced composites at a lower production cost.

Properties of Kevlar Fibers by Surface Modification

2013 ◽  
Vol 401-403 ◽  
pp. 688-691 ◽  
Author(s):  
Zhao Jia
Keyword(s):  
Surface Modification ◽  
Interfacial Shear Strength ◽  
Breaking Strength ◽  
Interfacial Shear ◽  
Epoxy Composites ◽  
Kevlar Fiber ◽  
Advanced Composites ◽  
Pull Out ◽  
Surface Modified ◽  
Lower Production

The surface of Kevlar fiber was modified by hydrogen peroxide solutions (H2O2) in this article. The interfacial properties of Kevlar fiber/epoxy composites were investigated by the single fiber pull-out test (SFP). The results showed that the interfacial shear strength (IFSS) of Kevlar /epoxy composites was remarkbly improved after surface modification and the breaking strength has not been affected appreciably. It provided an efficient method to make the surface modified Kevlar fiber for the application for the advanced composites at a lower production cost.

Effect of Surface Treatment on the Properties of PPTA Fiber

2013 ◽  
Vol 798-799 ◽  
pp. 215-218
Author(s):  
Zhao Jia
Keyword(s):  
Shear Strength ◽  
Experimental Design ◽  
Surface Treatment ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Epoxy Composites ◽  
Orthogonal Experimental Design ◽  
Optimum Conditions ◽  
Pull Out ◽  
Effect Of Surface

In this article, the potassium permanganate solutions (KMnO4) was used to treat the PPTA fiber based on an orthogonal experimental design. The optimum conditions of KMnO4treatment were concentration of 20%, temperature of 30°C and treating time of 20min. The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP), and the results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkbly improved.

Surface Treatment of PPTA Fiber and Properties of its Composite Materials

2012 ◽  
Vol 502 ◽  
pp. 227-232 ◽  
Author(s):  
Zhao Jia ◽  
Yan Gong Yang
Keyword(s):  
Interfacial Shear Strength ◽  
Physical Structure ◽  
Interfacial Shear ◽  
Epoxy Composites ◽  
Orthogonal Experimental Design ◽  
Optimum Conditions ◽  
Aramid Fibers ◽  
H2o2 Treatment ◽  
Pull Out ◽  
Polar Groups

Surface modification of Poly(ρ-phenylene terephthalamide) (PPTA) fiber has been considered an effcient way to increase the interfical bonding of the fiber/epoxy composites. In this article, the hydrogen peroxide solutions (H2O2) was used to treat the PPTA fiber based on an orthogonal experimental design. The optimum conditions of H2O2 treatment were concentration of 40%, treating temperature 40°C and treating time 60min. The morphology of the modified fiber were characterized by scanning electron microscope (SEM). The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP. The results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkbly improved which was attributed to the fact that some polar groups were introduced into the molecular structure of aramid fibers and the physical structure of the treated fibers was not etched obviously.

Thermal properties of surface-modified nano-Al2O3/Kevlar fiber/epoxy composites

2022 ◽  
Vol 278 ◽  
pp. 125689
Author(s):  
Mustafa Ozen ◽  
Gokhan Demircan ◽  
Murat Kisa ◽  
Abuzer Acikgoz ◽  
Gokhan Ceyhan ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Composites ◽  
Kevlar Fiber ◽  
Surface Modified

Cu (II) coordination modification of aramid fiber and effect on interfacial adhesion of composites

2018 ◽  
Vol 31 (9-10) ◽  
pp. 1054-1061 ◽  
Author(s):  
Ting Li ◽  
Zengxiao Wang ◽  
Junrong Yu ◽  
Yan Wang ◽  
Jing Zhu ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Interfacial Adhesion ◽  
Interfacial Shear Strength ◽  
Copper Ion ◽  
Aramid Fiber ◽  
Single Fiber ◽  
Epoxy Composites ◽  
X Ray ◽  
Pull Out ◽  
The Matrix

In this article, active groups were introduced to the surface of aramid fiber by building a Cu2+ bridge between the aramid fiber and polyethyleneimine (PEI) to improve adhesion in composites between the aramid fiber and the matrix such as epoxy resin. The changes in the structure and properties of the aramid fiber were verified with Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and the single-fiber pull-out test. The FTIR and XPS results show a significant change in the structure and morphology of the aramid fiber after modification. The results of the single-fiber pull-out test show that the interfacial shear strength (IFSS) of epoxy composites reinforced with PEI-grafted aramid fiber increases by 48.8% compared with the IFSS of epoxy composites reinforced with untreated fiber. Thus, the proposed method can improve the interfacial bonding of composites by creating a copper ion bridge between the aramid fiber and PEI.

An effective method to improve the interfacial shear strength in GF/CF reinforced epoxy composites characterized by fiber pull-out test

2020 ◽  
Vol 19 ◽  
pp. 168-172 ◽  
Author(s):  
Ziyue Wang ◽  
Bin Yang ◽  
Guang Xian ◽  
Zhenhua Tian ◽  
Jiexin Weng ◽  
...  
Keyword(s):  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Epoxy Composites ◽  
Pull Out
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