- Synergistic effect of montmorillonite and intumescent flame retardant on flame retardance enhancement of ABS
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- 论文类型： 期刊论文
- 发表时间： 2007-03-01
- 发表刊物： POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
- 收录刊物： SCIE、EI
- 卷号： 46
- 期号： 3
- 页面范围： 227-232
- ISSN号： 0360-2559
- 关键字： ABS; intumescent flame retardant; montmorillonite; synergistic effects
- 摘要： The synergistic effects of organic montmorillonite (OMMT) and intumescent flame retardant (IFR) based on the ammonium polyphosphate (APP) and pentaerythritol ( PER) on flame retardant enhancement of acrylonitrile-butadiene-styrene copolymer (ABS) were investigated by using the limiting oxygen index (LOI), the UL-94 (vertical flame) test, thermogravimetric analysis (TGA), x-ray diffractometry (XRD) and scanning electron microscopy (SEM). The LOI data and vertical flame tests show that OMMT has a synergistic flame retardant effect with IFR and the LOI value of ABS/OMMT/IFR (96/4/20) reaches 28.7%. The TGA data demonstrate that the incorporation of OMMT and IFR is very effective in enhancing the thermal stability of ABS/OMMT/IFR system at high temperature (T > 500 degrees C). The results of XRD show that the composite of ABS/OMMT is a kind of intercalated nano-composite and the gallery height of ABS/OMMT nanocomposite is 3.5 nm. The microstructures observed by SEM demonstrate that a suitable amount of OMMT with IFR can promote formation of compact intumescent charred layers in ABS blends.
