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日用化学工业(中英文) ›› 2025, Vol. 55 ›› Issue (5): 611-615.doi: 10.3969/j.issn.2097-2806.2025.05.009

• 开发与应用 • 上一篇    下一篇

石墨烯-聚氯乙烯复合材料制备与性能研究

李俊1,*(),吴晗2   

  1. 1.广西警察学院 继续教育学院,广西 南宁 530299
    2.广西警察学院 网络信息中心,广西 南宁 530299
  • 收稿日期:2024-05-31 修回日期:2025-04-27 出版日期:2025-05-22 发布日期:2025-06-11

Study on the preparation and properties of graphene-polyvinyl chloride composites

Jun Li1,*(),Han Wu2   

  1. 1. Continuous Education College, Guangxi Police College, Nanning, Guangxi 530299, China
    2. Network Information Center, Guangxi Police College, Nanning, Guangxi 530299, China
  • Received:2024-05-31 Revised:2025-04-27 Online:2025-05-22 Published:2025-06-11
  • Contact: *E-mail: ljgh163@126.com.

摘要:

采用溶液共混法制备了不同含量石墨烯的石墨烯-聚氯乙烯复合材料,通过对该复合材料的力学性能、微观形貌、导电性能和热失重等进行分析发现:随着石墨烯含量的增加,石墨烯-聚氯乙烯复合材料的拉伸强度和硬度均逐渐升高,当石墨烯含量为4wt%时,拉伸强度和硬度分别达到最大值25.8 MPa和49.2°,导电性能分析发现石墨烯-聚氯乙烯复合材料的电导率随着石墨烯含量的增加而呈指数上升,在石墨烯含量为6wt%时电导率达到了最大值,SEM分析发现纯聚氯乙烯的断面和基体中存在着缺口较多,当引入石墨烯后断口处慢慢细化并出现了片层结构,聚氯乙烯分子有效附着在表面,热分析发现随着石墨烯含量的增加,石墨烯-聚氯乙烯复合材料的热稳定性得到了明显的改善,并且在500 ℃下炭残留随着石墨烯含量的增加而升高,在石墨烯含量6wt%时的炭残留达48.3%。

关键词: 石墨烯, 聚氯乙烯, 溶液共混法, 力学性能, 热稳定性

Abstract:

In this paper, a solution blending method was selected to prepare graphene-polyvinyl chloride composites with different mass fractions (0%, 2%, 4%, 6%) of graphene. The mechanical properties and microscopic morphology, electrical conductivity and thermal weight loss of the composites were analyzed. It is found that with the increase of graphene content, the tensile strength and hardness of graphene-polyvinyl chloride composite materials gradually increase. When the graphene content is 4wt%, the tensile strength and the hardness reach the maximum values of 25.8 MPa and 49.2°, respectively. The conductivity analysis reveals that the conductivity of the graphene-polyvinyl chloride composite material increases exponentially with the increase of graphene content, reaching its maximum value at a graphene content of 6wt%. The SEM analysis shows that there are many gaps in the section and matrix of pure PVC. After the introduction of graphene, the fracture is gradually refined and a lamellar structure appears. The PVC molecules are effectively attached to the surface. The analysis shows that with the increase of graphene content, the thermal stability of the graphene-polyvinyl chloride composite material is significantly improved, and the carbon residue increases with the increase of graphene content at 500 ℃, reaching 48.3% at a graphene content of 6wt%.

Key words: graphene, polyvinyl chloride, solution blending method, mechanical properties, thermal stability

中图分类号: 

  • O643