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| Preparation and Properties of PPTA Composite Cellulose Fiber Paper |
| Received:April 05, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.11.015 |
| Key Words:PPTA cellulose fiber paper coating composite |
| Fund Project:国家自然科学基金项目（52073154）。 |
| Author Name | Affiliation | Postcode | | DONG Yanhui | College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning Province, 110142 | 110142 | | WANG Yuanxia | College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning Province, 110142 | 110142 | | ZHAO Min | Department of Chemical Engineering, Key Lab of Advanced Materials （MOE）, Tsinghua University, Beijing, 100084 | 100084 | | TONG Jianwen | College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning Province, 110142 | 110142 | | TUO Xinlin* | Department of Chemical Engineering, Key Lab of Advanced Materials （MOE）, Tsinghua University, Beijing, 100084 | 100084 |
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| Abstract:This paper presented an investigation into the process technology of poly（p-phenylene terephth amide）（PPTA）composite with cellulose fiber paper. The medium molecular weight PPTA was dissolved in DMPU/LiCl and formulated into a stable solution， which was then scraped onto the surface of ordinary cellulose fiber paper by the scraping method at a constant speed. The resulting gel coating was treated with a solidifying bath and subsequently dried to obtain PPTA-coated cellulose fiber paper. The introduction of PPTA surface coating resulted in an improvement in the denseness and continuity of the cellulose fiber paper surface， thereby facilitating a strong interaction with the cellulose fiber paper. The tensile strength of the composite paper increased significantly when the PPTA content was approximately 5.7%. The tensile strength of the cellulose fiber paper was 25.6 MPa， while that of the composite paper was 79.7 MPa，with a 211% increase. Similarly， the wet tensile strength increased from 0.134 kN/m to 0.731 kN/m，with a 446% increase. Additionally， the tear degree increased from 316.3 mN to 662.3 mN，with a 109% increase. Furthermore， the flame retardancy of the composite paper had increased significantly. It could self-extinguish within 3 when exposed to fire. Additionally， the electric breakdown strength of the composite paper was 20.9 kV/mm， which was an 90% increase compared to the original cellulose fiber paper. |
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