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Synergistic Modification of Polyformaldehyde by Biobased Calcium Magnesium Bi-Ionic Melamine Phytate with Intumescent Flame Retardant.
Lu, Shike; Chen, Xueting; Zhang, Bin; Lu, Zhehong; Jiang, Wei; Fang, Xiaomin; Li, Jiantong; Liu, Baoying; Ding, Tao; Xu, Yuanqing.
Afiliación
  • Lu S; Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China.
  • Chen X; College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China.
  • Zhang B; College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China.
  • Lu Z; College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China.
  • Jiang W; National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, China.
  • Fang X; National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, China.
  • Li J; Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China.
  • Liu B; College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China.
  • Ding T; Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China.
  • Xu Y; Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China.
Polymers (Basel) ; 16(5)2024 Feb 23.
Article en En | MEDLINE | ID: mdl-38475298
ABSTRACT
Intumescent flame retardants (IFRs) are mainly composed of ammonium polyphosphate (APP), melamine (ME), and some macromolecular char-forming agents. The traditional IFR still has some defects in practical application, such as poor compatibility with the matrix and low flame-retardant efficiency. In order to explore the best balance between flame retardancy and mechanical properties of flame-retardant polyformaldehyde (POM) composite, a biobased calcium magnesium bi-ionic melamine phytate (DPM) synergist was prepared based on renewable biomass polyphosphate phytic acid (PA), and its synergistic system with IFRs was applied to an intumescent flame-retardant POM system. POM/IFR systems can only pass the V-1 grade of the vertical combustion test (UL-94) if they have a limited oxygen index (LOI) of only 48.5%. When part of an IFR was replaced by DPM, the flame retardancy of the composite was significantly improved, and the POM/IFR/4 wt%DPM system reached the V-0 grade of UL-94, and the LOI reached 59.1%. Compared with pure POM, the PkHRR and THR of the POM/IFR/4 wt%DPM system decreased by 61.5% and 51.2%, respectively. Compared with the POM/IFR system, the PkHRR and THR of the POM/IFR/4 wt%DPM system were decreased by 20.8% and 27.5%, respectively, and carbon residue was increased by 37.2%. The mechanical properties of the composite also showed a continuous upward trend with the increase in DPM introduction. It is shown that the introduction of DPM not only greatly reduces the heat release rate and heat release amount of the intumescent flame-retardant POM system, reducing the fire hazard, but it also effectively improves the compatibility between the filler and the matrix and improves the mechanical properties of the composite. It provides a new approach for developing a new single-component multifunctional flame retardant or synergist for intumescent flame-retardant POM systems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
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: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza