Effect of vibration blow spreading process parameters on spreading effectivness of carbon fiber

doi:10.19491/j.issn.1001-9278.2023.12.008

Abstract

Abstract:

Aiming at the problems existing in the spreading device， the fiber bundle spreading mechanism was investigated. Based on the laboratory mechanical spreading equipment， a vibration⁃blowing spreading device was constructed through a combination of vibration spreading and air⁃blowing spreading， and a theoretical model was established for carbon fiber spreading. The spreading process parameters were optimized. The investigation results indicated that with an increase in the airflow speed， the vibration amplitude and vibration frequency could help to improve the spreading width and uniformity of carbon fiber. This ensures a lower spreading fracture rate up to 0.036 % compared to the traditional mechanical spreading process.

Key words: vibration blowing fiber tow, carbon fiber, process parameter

CLC Number:

TQ320.66

WANG Minghuan, LIU Yuanyuan, XU Ran, HE Yadong, XIN Chunling, REN Feng. Effect of vibration blow spreading process parameters on spreading effectivness of carbon fiber[J]. China Plastics, 2023, 37(12): 47-53.

Figures/Tables 15

Fig.1. Vibratory blowing spreading fiber process

Fig.2. Analysis of vibration blowing of fiber bundle

Fig.3. Force analysis of fiber bundles

Fig.4. Vibration⁃blowing fiber⁃spreading device

Fig.5. Measurement of the sample width

Fig.6. Sample image capture device

Fig.7. Spreading fiber breakage rate measurement

Fig.8. Effect of air velocity on spreading

Fig.9. Effect of vibration parameters on fiber spreading width

Fig.10. Comparative analysis of spread fiber width

Fig.11. Effect of air velocity on the uniformity of spreading fiber

Fig.12. Effect of vibration parameters on the uniformity of spreading fiber

Fig.13. Comparison of fiber spreading uniformity under different fiber spreading methods

Fig.14. Effect of vibration parameters on the breakage rate of spreading fibers

Fig.15. The effect of release tension on the breakage rate of spreading fiber

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