一个可持续的回收过程及其生命周期评估,以对消费后的织材料进行回收,用于隔热应用
Satya Karmakar1, Abhijit Majumdar1, Bhupendra Singh Butola1
1Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi, India.
概括
将消费后的丹尼姆 (r-denim) 回收成绝缘材料提供了一个可持续的解决方案. 使用39%的r-denim和61%的聚 (PET) 的优化无布实现了出色的耐热性和强度,减少了对环境的影响.
科学领域:
- 材料科学与工程 材料科学与工程
- 可持续工程 可持续工程
- 织品回收技术的使用
背景情况:
- 织废物对循环经济原则构成重大挑战.
- 需要可持续和具有成本效益的方法来重新利用消费后的织废物.
- 开发替代绝缘材料以减少对合成纤维的依赖.
研究的目的:
- 开发一种可持续且低成本的回收技术,将消费后的牛仔废物转化为绝缘材料.
- 研究由回收丹尼姆 (r-丹尼姆) 和空心聚烯 (PET) 纤维制成的非织造材料的耐热和拉伸性能.
- 通过使用生命周期评估,评估开发的r-denim/PET非织造材料对环境的益处.
主要方法:
- 使用不同比例的r-denim和空心PET纤维生产非织造材料.
- 采用了不同冲孔密度的针刺工艺.
- 采用Kowalski,Cornell和Vining混合物设计,用于样本开发和热阻和拉伸性能的表征.
主要成果:
- 有20%r-denim纤维的非织造材料显示出最高的初始热电阻 (0.131 W-1m2K).
- 通过调整穿孔密度,可以通过39%的r-denim纤维实现相同的热阻.
- 39%的r-denim/61%的PET混合物表现出2.43cN/tex的合理拉伸强度,并显著降低了环境负担 (约40%的r-denim使用).
结论:
- 从消费后的织废物 (r-denim/PET) 生产的非织造材料显示出作为隔热替代品的巨大潜力.
- 这种回收方法有助于有效利用织废物,促进环境可持续性.
- 优化的无布为隔热行业的废物减少和资源节约提供了可行的解决方案.
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