Influence of duoplasmatron ion source plasma treatment on multi-axial knitted structure reinforced glass fiber composites

Abstract

The present study investigates the impact of glow discharge cold plasma-induced duoplasmatron ion source on the mechanical properties of multi-axial knitted structure reinforced glass fiber composites. Analysis of failure location and mode in bending tests was conducted using the acoustic emission method. The results reveal that the tensile and bending strength of the multi-axial structure reinforced glass fiber composites treated with oxygen/nitrogen plasma had increased by 21.84% and 37.28%, respectively. In contrast, when treated with oxygen/argon plasma, the corresponding enhancements were 17.47% and 24.16%, respectively. These results indicate that oxygen/nitrogen plasma treatment yields superior mechanical properties to oxygen/argon treatment. The accumulated acoustic emission energy in the multi-axial structure reinforced glass fiber composites subjected to oxygen/nitrogen and oxygen/argon treatments was 25.49% and 62.39% lower than untreated samples, respectively. The failure mode observed in the untreated composites was matrix cracking, whereas the composites treated with dual plasma exhibited interface debonding. The dual plasma modification enhanced fiber wettability and surface roughness, facilitating increased contact area between the fiber and matrix and promoting the overall bonding performance between the two components. Taken together, our findings suggest that duoplasmatron ion source treatment enhanced the interface bonding and mechanical properties of the multi-axial structure reinforced glass fiber composites.

Keywords:

• Double plasma treatment
• multi-axial knitted
• textile reinforced composites
• mechanical properties
• Surface modification

Disclosure statement

No potential conflict of interest was reported by the author(s)

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (12202133), Funding of Hebei Education Department (ZD2022025), Youth Talents Plan of Hebei Province and Funding for Innovation Ability Training of Graduate Students in Hebei Province (CXZZSS2024075).