{
  "abstract": "The uneven electric field in cable accessory insulation can be optimized by field grading composite (FGC). We explored graphitic carbon nitride (g-C3N4) as a filler in liquid silicone rubber (LSR) matrices. Oxygen-doped g-C3N4 (O-g-C3N4) was prepared via calcination of g-C3N4 with ascorbic acid. Composites of g-C3N4/LSR and O-g-C3N4/LSR with different filler contents were fabricated. Microstructural and optical characterizations demonstrate that O-g-C3N4 retains the crystal structure of pristine g-C3N4 but exhibits thinner layers, modified elemental composition, and a 27.8% reduction in band gap; fillers are uniformly dispersed in the LSR matrix. Experimental measurements reveal that both composites exhibit nonlinear conductivity, while O-g-C3N4/LSR shows more pronounced nonlinearity at lower filler contents, accompanied by a faster decline in dielectric breakdown strength. There is little difference in thermal conductivity between g-C3N4/LSR and O-g-C3N4/LSR composites with the same filler content, which indicates that the change in band gap width has no significant influence on thermal conductivity. The low-cost synthesis and simple bandgap tuning method of g-C3N4 provide certain advantages for its use as a nonlinear filler in the preparation of FGC, broadening the application fields of g-C3N4, and verifying the possibility of reducing FGC filler usage through bandgap tuning.",
  "abstract_shown": true,
  "affiliations": [
    "School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China",
    "School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China",
    "Academy of Agricultural Planning and Engineering, Key Laboratory of Technologies and Models for Cyclic Utilization from Agricultural Resources, Ministry of Agriculture and Rural Affairs, Beijing 100125, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Peng Han"
    },
    {
      "affs": [
        0
      ],
      "name": "Li J",
      "orcid": "0000-0002-9158-3269"
    },
    {
      "affs": [
        0
      ],
      "name": "Peng Hu"
    },
    {
      "affs": [
        1
      ],
      "name": "Zheng Zhang"
    },
    {
      "affs": [
        1
      ],
      "name": "Chen Zhao",
      "orcid": "0000-0002-1962-9779"
    },
    {
      "affs": [
        2
      ],
      "name": "D Zhang",
      "orcid": "0009-0004-3604-5208"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5gtvgj436xe18.bib",
  "cited_by": 45,
  "doi": "10.3390/ma19112367",
  "fulltext_url": null,
  "id": "5gtvgj436xe18",
  "issns": [
    "1996-1944"
  ],
  "landing_url": "https://doi.org/10.3390/ma19112367",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|High voltage insulation and dielectric phenomena"
    ]
  ],
  "openalex": "W7163173528",
  "pdf_url": null,
  "pmcid": "PMC13257554",
  "pmid": "42280021",
  "published": "2026-06-02",
  "publisher": "Multidisciplinary Digital Publishing Institute",
  "ris": "https://research.draconitic.com/paper/5gtvgj436xe18.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:27:00Z",
      "native_id": "W7163173528",
      "source": "openalex",
      "url": "https://doi.org/10.3390/ma19112367"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|High voltage insulation and dielectric phenomena",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Nonlinear Electrical Conductivity and Thermal Conductivity of g-C3N4/Liquid Silicone Rubber Field Grading Composites",
  "title_text": "Nonlinear Electrical Conductivity and Thermal Conductivity of g-C3N4/Liquid Silicone Rubber Field Grading Composites",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T13:21:13Z",
  "url": "https://research.draconitic.com/paper/5gtvgj436xe18",
  "venue": "Materials",
  "versions": []
}