材料科学
导电体
复合材料
阻燃剂
聚合物
热导率
燃烧
使用寿命
热的
相(物质)
烟雾
废物管理
化学
物理
有机化学
气象学
工程类
作者
Han Zhang,Jing Yu,Zepeng Mao,Guangxin Li,Zhen Zhang,Noureddine Abidi,Lucian A. Lucia,Jun Zhang
标识
DOI:10.1016/j.jclepro.2023.138780
摘要
Though upcycling post-consumer polymers into high-value materials is appealing, it faces challenges including complex, costly processes and difficulties to achieve a circular lifecycle. To address these issues, we have developed a novel approach that involves designing a unique bi-continuous phase morphology with selective distribution of the conductive fillers in the semi-crystalline polymer phase. As a result, these composites exhibited excellent thermal conductivity (7.07 W m−1·K−1) and stable environmental longevity (thermal aging and 500 h UV irradiation) and can be upcycled as effective flame retardant (vertical combustion grade V-0) and smoke suppressed materials (smoke density grade 64.1) after their service life as a thermal conductive material has ended. Rather than being discarded or undergo molecular upcycling, they could be straightforwardly repurposed through melt processing and even displayed better processability, suggesting a one-pot but effective upcycle strategy for polymeric materials.
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