具有气体屏障和抗衰老特性的聚合物添加剂,通过超临界乙醇从青烯制成
Zulin Wu1, Xiangbo Liu1, Chao Ma1
1State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an, Shaanxi, 710049, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 13, 2023
概括
这项研究将石油副产品青转化为有价值的乙基化碳集群 (ECC). 这些ECC增强高密度聚乙烯 (HDPE) 复合材料,提高机械强度,气体屏障性能和抗紫外线性能,同时隔离碳.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 环境科学 环境科学
背景情况:
- 作为石油加工副产品的青,其市场价值较低,并带来了环境处置的挑战.
- 目前的废弃物处理方法,如焚烧和填埋,对环境有害.
研究的目的:
- 为了将低价值的青转化为高价值的乙基化碳集群 (ECC).
- 研究ECC作为强化剂在高密度聚乙烯 (HDPE) 复合材料中的应用.
- 评估ECC对HDPE机械,气体屏障和抗衰老性能的影响.
主要方法:
- 使用超临界乙醇技术将青转化为ECC.
- 将不同量的ECC纳入HDPE,以创建复合材料.
- 描述了HDPE/ECC复合材料的机械性能 (抗拉强度,破裂时延长),气体透气性 (氧气,二氧化碳) 和紫外线吸收.
主要成果:
- 添加1%的ECC显著改善了HDPE的拉伸强度 (4.2%) 和破裂时的延伸 (43.5%).
- 加入ECC可使氧气透率降低45.8%,二氧化碳透率降低30.7%.
- ECC证明了有效的紫外线光谱吸收 (400-600纳米),提高了HDPE对紫外线损伤的抵抗力.
结论:
- 来自青的乙烯化碳集群 (ECC) 有效地提高了高密度聚乙烯 (HDPE) 复合材料的性能.
- ECC提高了机械性能,降低了气体透性,并为HDPE提供紫外线保护.
- 这个过程提升了青的价值,封存了碳,并为传统的处置方法提供了可持续的替代方案.
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