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Simultaneously Flame Retarding and Toughening of Epoxy Resin Composites Based on Two-Dimensional Polyhedral Oligomeric Silsesquioxane/Polyoxometalate Supramolecular Nanocrystals with Ultralow Loading.
Ye, Xinming; Jing, Xinyi; Liu, Yunlan; Han, Zhiqing; Yang, Fan; Qiao, Liang; Ren, Jie; Meng, Linggong; Li, Zhimao; Wang, Wensheng; Li, Jie; Li, Yingchun.
Afiliación
  • Ye X; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Jing X; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Liu Y; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Han Z; North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Yang F; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Qiao L; School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, P. R. China.
  • Ren J; School of Chemistry and Chemical Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Meng L; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Li Z; School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, P. R. China.
  • Wang W; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Li J; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
  • Li Y; School of Materials Science and Engineering, North University of China, No. 3 Xueyuan Road, Taiyuan 030051, Shanxi, P. R. China.
ACS Appl Mater Interfaces ; 16(37): 49763-49777, 2024 Sep 18.
Article en En | MEDLINE | ID: mdl-39240053
ABSTRACT
For industrial practical applications, it is difficult to simultaneously endow epoxy resin (EP) composites with superior flame retardancy, smoke suppression, toughness, and low-dielectric constants. Herein, unique polyhedral oligomeric silsesquioxane/polyoxometalate (POM(Mo)-POSS(ibu-Li)) nanosheets were synthesized via a simple one-pot method using laboratory-made lithium-containing hepta-isobutyl-POSS (ibu-Li-POSS) and the low-cost industrial chromogenic agent H3PMo12O40 as raw materials. The incorporation of 2 wt % POM(Mo)-POSS(ibu-Li) nanoflakes into EP significantly enhanced the compatibility between nanoadditives and the EP matrix. Compared with EP, the flexural and impact strengths increased by 36.2 and 78.2%, respectively. Therefore, POM(Mo)-POSS(ibu-Li) has significant advantages in enhancing the toughness of EP compared with existing flame retardants. The dielectric constant and loss were apparently reduced to meet the increasing requirements of EP-type electronic packaging materials and components. Notably, the synthesized POM(Mo)-POSS(ibu-Li) contained various flame-retardant and smoke-suppression elements such as P, Mo, and Si. The ultralow loading (2 wt %) of POM(Mo)-POSS(ibu-Li) significantly reduced the peak heat release rate, peak of smoke production rate, and CO production rate by 43.9, 40.6, and 65.8%, respectively. Meanwhile, the value of LOI increased directly from 24.0% for EP to 30.2% and passed the V-0 rating in the UL-94 test. However, incorporating 5 wt % POSS derivatives into EP alone to ensure that the prepared composites pass the V-0 rating of the UL-94 test has always been an extraordinarily difficult problem. Therefore, the dilemmas of poor dielectric properties, inherent flammability, and brittleness of EP were completely overcome through the successful application of POM(Mo)-POSS(ibu-Li) supramolecular nanosheets.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos