Krishnaji Kadambari C S Vyasa, Gb Veeresh Kumar, Sahu Santosh Kumar, Aman Mohammed
Mechanical Engineering, National Institute of Technology - Andhra Pradesh, Tadepalligudem, Andhra Pradesh 534101, India.
Mechanical Engineering, Sri Vasavi Engineering College, Tadepalligudem, Andhra Pradesh 534101, India.
MethodsX. 2025 Jun 19;15:103449. doi: 10.1016/j.mex.2025.103449. eCollection 2025 Dec.
The escalating environmental concerns associated with plastic waste, particularly Low-Density Polyethylene (LDPE), have spurred research into sustainable recycling strategies. Pyrolysis has been developed as a viable technique for transforming LDPE into appreciated by-products, including carbon powder, which holds potential for advanced material applications. This study investigates the extraction of carbon powder from LDPE via pyrolysis and its subsequent utilization in composite laminates.•Araldite LY 556 and Aradur HY 951 epoxy resins are used to create the laminates, and carbon and kevlar fiber reinforcement are added in different weight fractions of 0 to 30 % in the intervals of 10 % of carbon char generated from LDPE.•Tensile strength (ASTM D638), flexural strength (ASTM D790), X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and scanning electron microscopy (SEM) are used to do a thorough assessment of mechanical and structural features.•Incorporation of LDPE-derived carbon char significantly enhanced mechanical properties of epoxy-based laminates. At 30 wt % char, tensile strength increased by 75 % in carbon and 129 % in Kevlar composites, while flexural strength improved by 94 % and 196 %, respectively. SEM, XRD, and FTIR analyses confirmed improved interfacial adhesion, structural integrity, and filler stability, demonstrating char's effectiveness as a sustainable reinforcement.
与塑料垃圾，特别是低密度聚乙烯（LDPE）相关的环境问题日益严重，这促使人们对可持续回收策略展开研究。热解已发展成为一种可行的技术，可将LDPE转化为有价值的副产品，包括碳粉，而碳粉在先进材料应用方面具有潜力。本研究调查了通过热解从LDPE中提取碳粉及其随后在复合层压板中的应用。
•使用Araldite LY 556和Aradur HY 951环氧树脂制作层压板，并以从LDPE生成的碳焦炭的10%的间隔，添加0至30%不同重量分数的碳和凯夫拉尔纤维增强材料。
•使用拉伸强度（ASTM D638）、弯曲强度（ASTM D790）、X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）和扫描电子显微镜（SEM）对机械和结构特征进行全面评估。
•加入LDPE衍生的碳焦炭显著提高了环氧基层压板的机械性能。在30 wt%的焦炭含量下，碳复合材料的拉伸强度提高了75%，凯夫拉尔复合材料提高了129%，而弯曲强度分别提高了94%和196%。SEM、XRD和FTIR分析证实了界面附着力、结构完整性和填料稳定性得到改善，证明了焦炭作为可持续增强材料的有效性。
