石墨烯纳米片增强再生聚丙烯纳米复合材料的热机械和电学性能

Q1 Engineering
Vimukthi Dananjaya , Chamil Abeykoon
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引用次数: 0

摘要

本文研究了石墨烯纳米板(GNP)填充的再生聚丙烯(rPP)纳米复合材料的热力学性能,以提高其性能和可持续性。它考察了GNP载荷对机械、热和电气性能的影响,重点是拉伸强度、杨氏模量、冲击强度、热偏转温度、导热性和电阻率。通过温和的酸处理使GNPs功能化以增强与rPP基体的相容性,然后在不同GNP负荷(0-20 Phr)下在双螺杆挤出机中进行熔体混合,制备出GNP- pp复合材料。当GNP从0增加到20 Phr时,再生聚丙烯的抗拉强度、杨氏模量和抗弯强度分别提高了15.6 MPa、3.7 MPa和2.41 MPa。在rPP基体中加入高达20 Phr的GNP,结晶温度、熔化温度、起始温度和最高分解温度分别提高了5℃、4.7℃、8.36℃和7.02℃。热导率也呈上升趋势,提高了221 mW/mK。然而,包括填料使电阻率降低了105 Ω cm,冲击强度降低了64.27 Jm毒血症1。这项工作的意义在于提供传统聚合物的环保替代品,促进再生材料的采用,并为可持续产品设计做出贡献。研究结果为促进循环经济、清洁生产和减少碳足迹的行业提供了宝贵的见解。此外,合成聚合物的回收和再利用为解决不断升级的全球聚合物废物问题揭示了一个有价值的前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Thermo-mechanical and electrical properties of graphene nanoplatelets reinforced recycled polypropylene nanocomposites

Thermo-mechanical and electrical properties of graphene nanoplatelets reinforced recycled polypropylene nanocomposites
This study investigates the thermo-mechanical properties of graphene nanoplatelet (GNP)-filled recycled polypropylene (rPP) nanocomposites to enhance their performance and sustainability. It examines the influence of GNP loading on mechanical, thermal, and electrical behaviour, focusing on tensile strength, Young’s modulus, impact strength, heat deflection temperature, thermal conductivity, and electrical resistivity. The GNP-PP composites are fabricated by functionalizing GNPs through mild acid treatment to enhance compatibility with the rPP matrix, followed by melt mixing in a twin-screw extruder at varying GNP loadings (0–20 Phr). The tensile strength, Young's modulus, and flexural strength of recycled polypropylene increased by 15.6 MPa, 3.7 MPa, and 2.41 MPa, respectively, as the GNP loading increased from 0 to 20 Phr. AddingAdding GNP up to 20 Phr into the rPP matrix also increased the crystallization, melting, onset, and maximum decomposition temperatures by 5, 4.7, 8.36, and 7.02 ˚C, respectively. Additionally, the thermal conductivity shows an increasing trend, with an improvement of 221 mW/mK. However, including fillers reduced electrical resistivity by 105 Ω cm and impact strength by 64.27 Jm⁻1. The significance of this work lies in providing eco-friendly alternatives to conventional polymers, promoting the adoption of recycled materials, and contributing to sustainable product design. The outcomes offer valuable insights for industries promoting a circular economy with cleaner production while reducing the carbon footprint. Also, the recycling and reuse of synthetic polymers uncover a valuable prospect for tackling the escalating global polymeric waste problem.
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来源期刊
International Journal of Lightweight Materials and Manufacture
International Journal of Lightweight Materials and Manufacture Engineering-Industrial and Manufacturing Engineering
CiteScore
9.90
自引率
0.00%
发文量
52
审稿时长
48 days
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