Scholarlink

<p>Flame-retardant polystyrene (PS) composites were fabricated via melt extrusion using recycled polystyrene particles (R-PS) as the matrix, intumescent flame retardant (IFR) as the primary flame retardant, and kaolin (Kaol) along with carbon microspheres (CMS) as synergistic additives. The flame retardancy, mechanical performance, and thermal behavior of the composites were systematically evaluated. Key findings: CMS and IFR exhibit synergistic flame-retardant effects in the R-PS. The R-PS/26IFR/4CMS composite demonstrates a limiting oxygen index (LOI) of 30.4% and achieves a UL94 V-0 rating (1.5&#xa0;mm thickness). Moreover, CMS incorporation enhances both the mechanical properties and thermal decomposition temperature of the composite. Kaol synergistically interacts with IFR in R-PS, simultaneously improving the composite’s mechanical strength, thermal stability, and heat deflection temperature. Dual incorporation of Kaol and CMS into the R-PS/IFR composites yields superior comprehensive performance. The optimized R-PS/26IFR/2Kaol/2CMS composite attains an LOI of 31.8% with UL94 V-0 rating (1.5&#xa0;mm thickness). Its tensile strength, flexural modulus, flexural strength, and notched impact strength reach 31.2, 2056.4, 45.2&#xa0;MPa, and 6.5 kJ·m<sup>− 2</sup>, respectively, representing enhancements of 16.4%, 2.3%, 5.6%, and 25.0% compared to the R-PS/30IFR. Both additives significantly improve the compactness and structural integrity of the char residue post-combustion.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic enhancement of flame retardancy, mechanical and thermal properties in recycled polystyrene composites via kaolin/carbon microspheres and intumescent flame retardant

  • 期刊论文

  • 发表日期：

    2026年2月23日

查看全文
  • Xiang Li,
  • Guirong Xie,
  • Zelong Wang

摘要

Flame-retardant polystyrene (PS) composites were fabricated via melt extrusion using recycled polystyrene particles (R-PS) as the matrix, intumescent flame retardant (IFR) as the primary flame retardant, and kaolin (Kaol) along with carbon microspheres (CMS) as synergistic additives. The flame retardancy, mechanical performance, and thermal behavior of the composites were systematically evaluated. Key findings: CMS and IFR exhibit synergistic flame-retardant effects in the R-PS. The R-PS/26IFR/4CMS composite demonstrates a limiting oxygen index (LOI) of 30.4% and achieves a UL94 V-0 rating (1.5 mm thickness). Moreover, CMS incorporation enhances both the mechanical properties and thermal decomposition temperature of the composite. Kaol synergistically interacts with IFR in R-PS, simultaneously improving the composite’s mechanical strength, thermal stability, and heat deflection temperature. Dual incorporation of Kaol and CMS into the R-PS/IFR composites yields superior comprehensive performance. The optimized R-PS/26IFR/2Kaol/2CMS composite attains an LOI of 31.8% with UL94 V-0 rating (1.5 mm thickness). Its tensile strength, flexural modulus, flexural strength, and notched impact strength reach 31.2, 2056.4, 45.2 MPa, and 6.5 kJ·m− 2, respectively, representing enhancements of 16.4%, 2.3%, 5.6%, and 25.0% compared to the R-PS/30IFR. Both additives significantly improve the compactness and structural integrity of the char residue post-combustion.

Graphical Abstract