Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (12): 37-41.doi: 10.13475/j.fzxb.20200401105

• Fiber Materials • Previous Articles     Next Articles

Surface modification of basalt fiber using nano-SiO2

LIU Shuqiang, WU Jie, WU Gaihong(), YIN Xiaolong, LI Fu, ZHANG Man   

  1. College of Textile Engineering, Taiyuan University of Technology, Jinzhong, Shanxi 030600, China
  • Received:2020-04-07 Revised:2020-07-06 Online:2020-12-15 Published:2020-12-23
  • Contact: WU Gaihong E-mail:gaigai2003@126.com

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Abstract:

In order to improve the interface compatibility of the basalt fiber with the matrix, coupling agent KH550 was used to modify the nano-SiO2 and the surface of the basalt fiber was modified by the modified nano-SiO2. The surface morphology and chemical structure of basalt fibers before and after modification were analyzed, and the effects of the mass fraction of nano-SiO2 on the mechanical properties, friction coefficient and moisture absorption performance of basalt fibers were studied. The results show that after nano-SiO2 surface treatment, the roughness and specific surface area of the basalt fiber surface is increased, and the friction and moisture absorption performance are increased significantly. When the nano-SiO2 mass fraction is 5%, the basalt fiber friction coefficient is increased from 0.255 to 0.280, and the moisture permeability is increased to 0.65%. Compared with the untreated basalt fiber, C—H bond appeared on the surface of the modified basalt fiber, and the intensity of the vibration peak corresponding to the Si—O—Si bond becomes stronger, increasing the polarity of the fiber surface. The tensile mechanical properties of the modified basalt fiber are also improved to some extent. With the increase of the amount of nano-SiO2, the mechanical properties of the basalt fiber increase at first and then decrease peak, and when the nano-SiO2 mass fraction is at 3%, the tensile fracture strength of basalt fiber reaches up to 40 cN/tex.

Key words: basalt fiber, high-performance fiber, nano-SiO2, coupling agent KH550, surface modification, mechanical property

CLC Number: 

  • TS102.6

Fig.1

SEM images of BF modified by different mass fraction of nano-SiO2 (×5 000)"

Fig.2

Infrared spectra of nano-SiO2, KH550/SiO2, BF and KH550/SiO2/BF"

Fig.3

Tensile fracture strength of BF modified by different mass fraction of Nano-SiO2"

Fig.4

Effect of nano-SiO2 mass fraction on friction coefficient of basalt fiber"

Fig.5

Effect of nano-SiO2 mass fraction on moisture permeability of basalt fiber"

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