基于羊毛纤维和从废水污泥中回收的胞外聚合物物质的纤维板的可燃性和机械性能

IF 7.9 3区 材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Nur Mufidatul Ula , Tan Minh Le , Yuemei Lin , Mark C.M. van Loosdrecht , Debes Bhattacharyya , Krishnan Jayaraman , Nam Kyeun Kim
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引用次数: 0

摘要

研究了从废水污泥中提取的胞外聚合物(EPS)对羊毛基纤维板阻燃性能和力学性能的影响。采用热重分析和差示扫描量热法对羊毛、树脂和EPS的热性能进行了分析,以确定制造参数并评估其对纤维板热分解的影响。一种专门的纤维板制造装置,包括鼓式搅拌机、管式搅拌机和热压机,用于制造复合板。结果表明,增加热压时间可以提高材料的弯曲强度和内粘接强度。与不含生物聚合物的纤维板相比,EPS的掺入显著提高了内部粘合强度。此外,羊毛和EPS的共同作用促进了有效的炭形成,并导致V-0等级,在垂直燃烧试验中表现出自熄行为。锥形量热计分析表明,虽然EPS有助于降低热量释放率,但其效果达到饱和点。然而,火灾生长指数以及屏障和保护作用值表明,EPS有效地减缓了火灾的蔓延和传播。这些发现强调了废水衍生EPS作为一种可持续添加剂的潜力,可以提高羊毛基纤维板的耐火性和机械完整性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Flammability and mechanical performance of fibreboards based on wool fibres and extracellular polymeric substances recovered from wastewater sludge

Flammability and mechanical performance of fibreboards based on wool fibres and extracellular polymeric substances recovered from wastewater sludge
This study investigates the influence of extracellular polymeric substances (EPS), recovered from wastewater sludge, on the flame-retardant and mechanical properties of wool-based fibreboards. The thermal properties of wool, resin, and EPS were analysed using thermogravimetric analysis and differential scanning calorimetry to determine manufacturing parameters and assess their impact on the thermal decomposition of the fibreboards. A specialised fibreboard manufacturing setup, incorporating a drum mixer, tube blender, and hot press, was developed to fabricate the composite boards. Results indicate that increasing the hot-pressing time enhances both flexural and internal bond strength. The incorporation of EPS significantly improves the internal bond strength compared to fibreboards without the biopolymer. Moreover, the combined effects of wool and EPS promote effective char formation and lead to a V-0 rating, showing self-extinguishing behaviour in vertical burn tests. Cone calorimeter analysis reveals that while EPS contributes to a reduction in the heat release rate, its effect reaches a saturation point. However, the fire growth index, along with barrier and protective effect values, demonstrates that EPS effectively mitigates fire spread and propagation. These findings highlight the potential of wastewater-derived EPS as a sustainable additive for enhancing the fire resistance and mechanical integrity of wool-based fibreboards.
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来源期刊
CiteScore
5.80
自引率
6.40%
发文量
174
审稿时长
32 days
期刊介绍: Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.
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