Effect of Surface Modification on Properties of Kevlar/epoxy Polymer Composites

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Year : 2025 | Volume : | : | Page : –
By
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Tran Thi Y Nhi,

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Trinh Duc Cong,

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Dang Thi Mai,

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Nguyen Thi Thuc,

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Tran Thi Thanh Hop,

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Tung Pham,

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Ngo Trinh Tung,

  1. Senior Researcher, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Vietnam
  2. Senior Researcher, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Vietnam
  3. Researcher, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Vietnam
  4. Researcher, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Vietnam
  5. Researcher, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Vietnam
  6. Professor, Research Institute of Textile Chemistry and Textile Physics, University Innsbruck, Dornbirn, , Vietnam
  7. Associate Professor, Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, , Viet Nam

Abstract

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In this study, a high-performance Kevlar/epoxy polymer composite was prepared using a hand lay-up technique. The Kevlar fiber was treated with calcium chloride/ethanol solution (CaCl2/EtOH) to enhance the interfacial interaction between the fiber and the epoxy matrix. The optimization of fiber surface treatment and fiber content for the best tensile strength (TS) of Kevlar/epoxy polymer composite was achieved using Box-Behnken design (BBD) through response surface methodology (RSM). Three parameters: CaCl2 concentration (A), CaCl2 treatment time (B), and Kevlar content (C) were chosen. The results indicated that the C factor had the most effect on the response and the B factor was the least important factor. The optimal parameters extracted by Design Expert Software were CaCl2 concentration of 6.59 %, CaCl2 treatment time of 5.58 h, and Kevlar fiber content of 42%. Under these conditions, the TS of the polymer composite obtained experimentally was 409.6 MPa, which was not significantly different from the predicted TS value of 408.7 MPa. The surface modification of Kevlar fiber causing higher roughness due to the complex formation between CaCl2 and -C=O group has significantly improved the split tear strength (Ds) of the Kevlar/epoxy polymer composite to 3.1 N/mm, compared to untreated Kevlar fiber of 2.4 N/mm.

Keywords: Kevlar fiber, surface modification, epoxy composite, CaCl2 treatment, Box–Behnken design

How to cite this article:
Tran Thi Y Nhi, Trinh Duc Cong, Dang Thi Mai, Nguyen Thi Thuc, Tran Thi Thanh Hop, Tung Pham, Ngo Trinh Tung. Effect of Surface Modification on Properties of Kevlar/epoxy Polymer Composites. Journal of Polymer and Composites. 2025; ():-.
How to cite this URL:
Tran Thi Y Nhi, Trinh Duc Cong, Dang Thi Mai, Nguyen Thi Thuc, Tran Thi Thanh Hop, Tung Pham, Ngo Trinh Tung. Effect of Surface Modification on Properties of Kevlar/epoxy Polymer Composites. Journal of Polymer and Composites. 2025; ():-. Available from: https://journals.stmjournals.com/jopc/article=2025/view=0

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Ahead of Print Subscription Original Research
Volume
Received 29/10/2024
Accepted 12/12/2024
Published 17/01/2025
153