Surface modification of aramid fiber by crystalline polyarylene ether nitrile sizing for improving interfacial adhesion with polyarylene ether nitrile

2021 ◽  
Vol 217 ◽  
pp. 108917
Author(s):  
Linsen Zuo ◽  
Kui Li ◽  
Dengxun Ren ◽  
Mingzhen Xu ◽  
Lifen Tong ◽  
...  
Keyword(s):  
Surface Modification ◽  
Interfacial Adhesion ◽  
Aramid Fiber ◽  
Polyarylene Ether Nitrile

Sulfone-functionalized poly(p-phenylene terephthalamide) copolymer fibers with improved interfacial adhesion to epoxy matrices

2021 ◽  
pp. 095400832110089
Author(s):  
Ting Li ◽  
Zengxiao Wang ◽  
Hao Zhang ◽  
Yutong Cao ◽  
Zuming Hu ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Interfacial Shear Strength ◽  
Aramid Fiber ◽  
Fiber Reinforced Composites ◽  
Epoxy Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Regular Arrangement ◽  
Epoxy Matrices ◽  
Polymerization Conditions

The poor interfacial adhesion of aramid fiber and matrix limits the application of the final composites. In this study, a series of the sulfone-functionalized poly( p-phenylene terephthalamide) (SPPTA) copolymers were satisfactorily synthesized and the effects of polymerization conditions (contents of the additional monomer and the cosolvent LiCl, molar concentration and ratio of the monomer, reaction temperature and time) on the molecular weight of the copolymer were discussed. The introduction of the sulfone group in aromatic polyamides not only increased the polarity of poly( p-phenylene terephthalamide) (PPTA) but destroyed the regular arrangement of the molecular chains, which greatly improved the surface free energy and the solubility of the polymers in organic solvents. The polymer maintained excellent thermal and interfacial properties. Compared with the PPTA fiber/epoxy composites, the interfacial shear strength (IFSS) of SPPTA fiber-reinforced epoxy composites reached 43.5 MPa, with a significantly enhancement of 20.8%, implying that the study provided an effective method to achieve highly interfacial adhesion of aramid fiber-reinforced composites.

Surface modification of aramid fiber by air DBD plasma at atmospheric pressure with continuous on-line processing

2008 ◽  
Vol 202 (24) ◽  
pp. 6029-6033 ◽  
Author(s):  
Min Xi ◽  
Yu-Liang Li ◽  
Shu-yong Shang ◽  
Dai-Hong Li ◽  
Yong-Xiang Yin ◽  
...  
Keyword(s):  
Surface Modification ◽  
Atmospheric Pressure ◽  
Aramid Fiber ◽  
Dbd Plasma ◽  
On Line

Surface Modification of Aramid Fiber-III by Ultrasonic Vibration

2017 ◽  
Author(s):  
Feng-De Wang ◽  
Yong-Lei Lv ◽  
Xu Wei ◽  
Guo Ling ◽  
Zhe-Wen Han
Keyword(s):  
Surface Modification ◽  
Ultrasonic Vibration ◽  
Aramid Fiber

Surface Modification of Aramid Fiber III by the Atmospheric-Pressure Air Plasma Treatment

2017 ◽  
Vol 893 ◽  
pp. 318-322 ◽  
Author(s):  
Feng De Wang ◽  
Yong Lei Lv ◽  
Xu Wei ◽  
Guo Ling ◽  
Zhe Wen Han
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Adhesive Force ◽  
Aramid Fiber ◽  
Air Plasma ◽  
Pull Out ◽  
Air Plasma Treatment ◽  
Effect Of Surface

Aramid fiber III has been treated by plasma treatment on different atmosphere gas to enhance the adhesive force between Aramid fiber III and epoxy matrix. The results of contact angle and SEM indicate that the obvious corrosion appear in the surface of aramid fiber III after plasma treatment. The yarn pull-out method was used to evaluate the effect of surface modification. The contact angle of original aramid fiber III is 65.9 o, and after treated the contact angle is declined to 62.2 o. The evaluation results show the tensile strength and NOL ILSS of treated Aramid fiber III/epoxy composite increased by about 10%. In summary, the effect of plasma treatment is obvious and has potential industry application.

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