Reactive, intumescent, halogen-free flame retardant for polypropylene
| Autor: | Shaokui Cao, Jingwu Wang, Yanxia Cao, Guixun Li, Wanjie Wang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Thermogravimetric analysis
Materials science Polymers and Plastics Izod impact strength test General Chemistry Pentaerythritol Surfaces Coatings and Films Limiting oxygen index chemistry.chemical_compound Flexural strength chemistry Ultimate tensile strength Materials Chemistry Composite material Intumescent Fire retardant Nuclear chemistry |
| Zdroj: | Journal of Applied Polymer Science. 131 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.40054 |
| Popis: | A reactive, intumescent, halogen-free flame retardant, 2-({9-[(4,6-diamino-1,3,5-triazin-2-yl)amino]-3,9-dioxido-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecan-3-yl}oxy)ethyl methacrylate (EADP), was synthesized through a simple three-step reaction from phosphorus oxychloride, pentaerythritol, hydroxyethyl methacrylate, and melamine. EADP exhibited excellent thermal stability and char-forming ability, as revealed by thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The TGA results show that the temperature at 5% weight loss was 297.8°C and the char yield at 700°C was 51.75%. SEM observation revealed that the char showed a continuous and compact surface and a cellular inner structure with different sizes. Composite of polypropylene (PP) with a 25 wt % addition of EADP (PP/EADP25) passed the UL-94 V-0 rating and showed a limiting oxygen index value of 31.5. Compared with those of neat PP, the flexural strength and modulus values of PP/EADP25 were somewhat improved, the tensile strength was basically unchanged, and the notched Izod impact strength was slightly decreased. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40054. |
| Databáze: | OpenAIRE |
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