Preparation and Application of Colemanite Matrix Complex Flame Retardant
| Autor: | Yun Xia Cui, Jun Zhu, Hong Zhi Wang, Jian Chu Zhong |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Polyphosphate Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Grafting 01 natural sciences Colemanite Titanate 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials Ultimate tensile strength General Materials Science Stearic acid Composite material 0210 nano-technology Fire retardant |
| Zdroj: | Materials Science Forum. 852:670-676 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.852.670 |
| Popis: | In this paper, stearic acid, titanate coupling agent (NDZ-311) and silane coupling agent (KH-570) were selected as modifiers to modify colemanite powder and the resulted products were characterized by XRD and FT-IR. The results show that the surfaces of colemanite particles were effectively modified by stearic acid and coupling agents. The modified colemanite /EVA composites were then prepared and the effect of coupling agent addition on the mechanical properties and flame retardancy of EVA composites was investigated. The EVA composite doped with 40% of modified colemanite (coupling agent accounting for 1% of colemanite mass) exhibits a tensile strength of 9.80MPa, a breaking elongation of 696.5% and a limit oxygen index of 29.6%. The complex flame retardant was obtained by means of grafting amine polyphosphate onto the surface of colemanite using polyphosphoric acid (PPA) and laurylamine as raw materials. The obtained product was analyzed by XRD and FT-IR. The EVA composite doped with 40% of the complex flame retardant has a tensile strength of 8.57MPa, a breaking elongation of 671.3% and a limit oxygen index of 32.6%. |
| Databáze: | OpenAIRE |
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