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 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.

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.

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

scholarly journals Enhanced flexural properties of aramid fiber/epoxy composites by graphene oxide

2019 ◽  
Vol 8 (1) ◽  
pp. 484-492 ◽  
Author(s):  
Yinqiu Wu ◽  
Bolin Tang ◽  
Kun Liu ◽  
Xiaoling Zeng ◽  
Jingjing Lu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Flexural Strength ◽  
Interfacial Shear Strength ◽  
Flexural Modulus ◽  
Weight Fraction ◽  
Interfacial Shear ◽  
Aramid Fiber ◽  
Epoxy Composites ◽  
Flexural Properties ◽  
Pure Epoxy

Abstract The reinforcing effect of graphene oxide (GO) in enhancing the flexural strength and flexural modulus of aramid fiber (AF)/epoxy composites were investigated with GO-AFs at a weight fraction of 0.1-0.7%. The flexural strength and flexural modulus of the composite reached 87.16 MPa and 1054.7 MPa, respectively, which were about 21.19% and 40.86% higher than those of the pure epoxy resin, respectively. In addition, the flexural properties and interfacial shear strength (IFSS) of composite reinforced by GO-AFs were much higher than the composites reinforced by AFs due to GO improved the interfacial bonding between the reinforcement material and matrix.

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