Controllable growth of uniform carbon nanotubes/carbon nanofibers on the surface of carbon fibers

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75735-75745 ◽  
Author(s):  
Wenxin Fan ◽  
Yanxiang Wang ◽  
Jiqiang Chen ◽  
Yan Yuan ◽  
Aiguo Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Carbon Fiber ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
Fiber Surface ◽  
Controllable Growth ◽  
Carbon Fiber Surface

Controllable growth of CNTs/CNFs on carbon fiber surface without degradation of tensile strength of carbon fibers.

Improving the interfacial properties of carbon fibers/vinyl ester composites by vinyl functionalization on the carbon fiber surface

RSC Advances ◽  
2016 ◽  
Vol 6 (35) ◽  
pp. 29428-29436 ◽  
Author(s):  
Xiuping Zhang ◽  
Liu Liu ◽  
Ming Li ◽  
Yanjie Chang ◽  
Lei Shang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Vinyl Ester ◽  
Interfacial Adhesion ◽  
Fiber Surface ◽  
Interfacial Properties ◽  
Resin Composites ◽  
Vinyl Ester Resin ◽  
Adhesion Properties ◽  
Carbon Fiber Surface

APMA functionalized CFs can significantly improve the interfacial adhesion properties of the carbon fiber reinforced vinyl ester resin composites.

Improved interfacial and impact properties of carbon fiber/epoxy composites through grafting hyperbranched polyglycerols on a carbon fiber surface

e-Polymers ◽  
2014 ◽  
Vol 14 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Kaiqiang Sui ◽  
Qingbo Zhang ◽  
Yingying Liu ◽  
Lei Tan ◽  
Li Liu
Keyword(s):  
Contact Angle ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Dynamic Contact Angle ◽  
Fiber Surface ◽  
Dynamic Contact ◽  
Impact Properties ◽  
Carbon Fiber Surface ◽  
Contact Angle Analysis

AbstractGrafting hyperbranched polyglycerols onto a carbon fiber surface is done in an attempt to improve the interfacial and impact properties between carbon fiber and epoxy resin. Scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and dynamic contact angle analysis were performed to characterize the carbon fibers. The TGA result shows that the mass fraction of the hyperbranched polyglycerols grafted onto the carbon fibers surface was 9.03%. The SEM results indicate that the hyperbranched polyglycerols have been grafted onto the carbon surface and that the surface roughness of the carbon fiber significantly increased. The XPS result indicates that oxygen-containing functional groups obviously increased after modification. Dynamic contact angle analysis indicates that the surface energy of modified carbon fibers increased significantly compared with the untreated ones. Results of the mechanical property tests show that interfacial shear strength increased from 59.86 to 80.16 MPa, interlaminar shear strength increased from 57.57 to 73.49 MPa and impact strength simultaneously increased from 2.52 to 3.52 J.

scholarly journals Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers

2021 ◽  
Vol 5 (4) ◽  
pp. 111
Author(s):  
Chengjuan Wang ◽  
Yanxiang Wang ◽  
Shunsheng Su
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Fiber Surface ◽  
Growth Time ◽  
Process Conditions ◽  
Continuous Growth ◽  
Graphitization Degree ◽  
Growth Atmosphere ◽  
Moving Speed

Grafting carbon nanotubes (CNTs) is one of the most commonly used methods for modifying carbon fiber surface, during which complex device is usually needed and the growth of CNTs is difficult to control. Herein, we provide an implementable and continuous chemical vapor deposition (CVD) process, by which the novel multiscale reinforcement of carbon nanotube (CNT)-grafted carbon fiber is prepared. After exploring the effects of the moving speed and growth atmosphere on the morphology and mechanical properties of carbon nanotubes/carbon fiber (CNTs/CF) reinforcement, the optimal CVD process conditions are determined. The results show that low moving speeds of carbon fibers passing through the reactor can prolong the growth time of CNTs, increasing the thickness and density of the CNTs layer. When the moving speed is 3 cm/min or 4 cm/min, the surface graphitization degree and tensile strength of CNTs/CF almost simultaneously reach the highest value. It is also found that H2 in the growth atmosphere can inhibit the cracking of C2H2 and has a certain effect on prolonging the life of the catalyst. Meanwhile, the graphitization degree is promoted gradually with the increase in H2 flow rate from 0 to 0.9 L/min, which is beneficial to CNTs/CF tensile properties.

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