Kundu, S and Adak, B and Tomar, S and Joshi, M (2023) A synergy of atmospheric plasma and UV-additive incorporated PU and styrene–isoprene-styrene adhesive for improving inter-layer adhesion in PVF/Fabric/BOPET laminate for aerostat envelope. In: Composites Part A: Applied Science and Manufacturing, 173 .
![[img]](https://eprints.iisc.ac.in/style/images/fileicons/application_pdf.png) |
PDF
com_par_app_173_2023.pdf - Published Version Restricted to Registered users only Download (15MB) | Request a copy |
Abstract
Engineers and material scientists face a significant challenge in finding the right adhesive and technology to join the layers of a multi-layered laminated composite for making lightweight aircrafts. This paper focuses on a novel method of exposing substrates to atmospheric-plasma using different purging gases and subsequent adhesive-lamination. Three separate plasma-exposed layers— polyvinyl fluoride (PVF) film, polyester fabric, and biaxially oriented polyethylene terephthalate (BOPET) film were joined together using two different solvent-borne/pressure-sensitive adhesives, based on polyurethane and styrene–isoprene-styrene. Both adhesives were compounded with organic UV-additives and nano-carbon black for improving weather resistance. The composite laminates were exposed to accelerated weathering for 100 h to qualify for the targeted application of aerostat envelope/hull. Among different gas combinations, the helium/oxygen-mixture (80:20) showed the best results in terms of surface etching/functionalization, which strongly attributed to improving adhesion-strength. Among two adhesives, styrene–isoprene-styrene-based adhesive performed much better. This adhesive was UV-cured after post-weathering cycle, and it improved inter-laminar adhesion strength by 81% and reached 16.2 N/cm. As a consequence, it prevented adhesive breakage from the weak bond layers and turned it into a cohesive failure from the adhesive layer. Most importantly, the laminated fabric showed excellent helium gas barrier property, which improved further after weathering cycle, making it ideal for the targeted application.
| Item Type: | Journal Article |
|---|---|
| Publication: | Composites Part A: Applied Science and Manufacturing |
| Publisher: | Elsevier Ltd |
| Additional Information: | The copyright for this article belongs to the Elsevier Ltd. |
| Keywords: | A: Fabrics/Textiles; A: Laminates; B: Adhesion; D: Chemical analysis; Gas barrier |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 20 Jul 2023 07:00 |
| Last Modified: | 20 Jul 2023 07:00 |
| URI: | https://eprints.iisc.ac.in/id/eprint/82486 |
Actions (login required)
 |
View Item |
