Abstract

Coated and laminated fabrics intended for out-door application suffer from property degradation due to hazardous environmental factors, which results in poor durability and limited shelf-life. In this study, polyvinylidene difluoride (PVDF) film having completely ultraviolet (UV) blocking property was developed by solution casting method with optimizing different process parameters. UV blocking property was achieved by pigmentation of pristine PVDF films using titanium dioxide (TiO₂). Various characterizations and tests were carried out to determine mechanical, thermal, EDX, FTIR and light transmission properties etc. in case of pristine and pigmented films and the results obtained were analyzed to judge the stability, structure and suitability of the developed films. Pigmented film was then laminated with light sensitive textile substrate by adhesion bonding method. The laminated fabric was subjected to natural and artificial weathering conditions for assessment of efficacy of developed film. The obtained results indicated that film laminated sample exhibited excellent weathering protection compared to control sample (without film) which was evaluated in terms of tensile strength loss after exposure.

摘要

用于户外应用的涂层和层压织物由于有害的环境因素而遭受性能退化，从而导致耐久性差和保质期有限。在这项研究中，通过优化不同工艺参数的溶液流延法，开发了具有完全紫外线 (UV) 阻挡性能的聚偏二氟乙烯 (PVDF) 薄膜。通过使用二氧化钛（TiO ₂）。进行了各种表征和测试，以确定原始和着色薄膜的机械、热、EDX、FTIR 和透光性能等，并分析获得的结果以判断开发薄膜的稳定性、结构和适用性。然后通过粘合方法将着色薄膜与光敏纺织基材层压。层压织物经受自然和人工风化条件以评估显影薄膜的功效。所得结果表明，与对照样品（无膜）相比，膜层压样品表现出优异的耐候保护，其在暴露后的拉伸强度损失方面进行了评估。