- The analysis of synergistic effects of zeolites applied in intumescent halogen-free flame-retardant ABS composites
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- 论文类型： 期刊论文
- 发表时间： 2008-06-01
- 发表刊物： POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
- 收录刊物： SCIE、EI
- 卷号： 47
- 期号： 6
- 页面范围： 613-618
- ISSN号： 0360-2559
- 关键字： halogen-free flame retardant ABS; intumescent flame retardant; synergistic effect; zeolite
- 摘要： Ammonium polyphosphate (APP) and pentaerythritol (PER) were selected to form intumescent flame-retardant (IFR) and halogen-free flame-retardant ABS/IFR/zeolite composites were prepared by melt blending. The influences of zeolite 4A, 13X on thermal behavior of mass loss, flame-retardant performance, microstructure, mechanical properties, and processability of composites were investigated. The results showed that zeolite 4A with a lower Si/Al ratio, stronger surface polarity, and lower loading not only had a better synergistic effect with IFR, which promoted the catalytic esterification of IFR, stabilized the charred residue, and made ABS/IFR composites possess higher flame-retardant performance, but also was beneficial to improving the mechanical properties and processability of composites. When the content of zeolite 4A was 1wt%, ABS/IFR composites had better comprehensive properties. Its limiting oxygen index (LOI) value, impact strength, tensile strength, flexural strength, modulus, and melt index were 32.6%, 3.4KJ/m(2), 39MPa, 38.7MPa, 1337MPa, and 24.5 g/10 min, respectively.
