{
  "abstract": "The inherent brittleness of silica aerogels severely limits their practical application in thermal protection. To address this issue, polymethylsilsesquioxane (PMSQ) wet gels were fabricated via an aqueous sol-gel method, and polyimide (PI) was introduced through in situ polymerization to construct an inorganic-organic continuous framework with PI in situ bridging and interfacial coating, thus successfully preparing the Si/PI composite aerogel. This composite achieves synergistic enhancements in mechanical, thermal insulation, hydrophobic and flame-retardant properties. The flexible PI network effectively alleviates stress concentration, and the compressive modulus of the composite aerogels increased with the PI content, reaching 7.52 MPa for Si/PI-80 and 23.78 MPa for Si/PI-100. The thermal conductivity stays below 0.036 W·m⁻¹·K⁻¹ with favorable low thermal conduction stability. The Si-CH₃ groups in PMSQ provide excellent hydrophobicity with a maximum water contact angle of 145.6°. Meanwhile, the char-forming effect of PI at high temperatures counteracts the negative impact of methyl groups on flame retardancy, endowing the aerogel with self-extinguishing behavior and high thermal stability. This work offers a novel strategy for designing high-strength multifunctional silica-based aerogels, which exhibit promising application prospects in aerospace, building energy conservation and high-end thermal protection.",
  "abstract_shown": true,
  "affiliations": [
    "School of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250200, China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Ziqi Zhu"
    },
    {
      "affs": [
        0
      ],
      "name": "Junyong Chen",
      "orcid": "0009-0007-9016-0620"
    },
    {
      "affs": [
        0
      ],
      "name": "Defang Pan"
    },
    {
      "affs": [
        0
      ],
      "name": "Guanghui Wu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/094npgt1vazkp.bib",
  "cited_by": 0,
  "doi": "10.3390/gels12100898",
  "fulltext_url": "https://europepmc.org/articles/PMC13704558",
  "id": "094npgt1vazkp",
  "issns": [
    "2310-2861"
  ],
  "landing_url": "https://europepmc.org/article/MED/42929932",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1607|Aerogels and thermal insulation"
    ]
  ],
  "openalex": "W7220422439",
  "pdf_url": "https://europepmc.org/articles/PMC13704558?pdf=render",
  "pmcid": "PMC13704558",
  "pmid": "42929932",
  "published": "2026-10-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/094npgt1vazkp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "MED:42929932",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42929932"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1607|Aerogels and thermal insulation",
      "subfield": "physical"
    }
  ],
  "title": "In Situ Polyimide Modified Polymethylsilsesquioxane Aerogels for Thermal Insulation.",
  "title_text": "In Situ Polyimide Modified Polymethylsilsesquioxane Aerogels for Thermal Insulation.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/094npgt1vazkp",
  "venue": "Gels (Basel, Switzerland)",
  "versions": []
}