China Plastics ›› 2018, Vol. 32 ›› Issue (03): 110-115.DOI: 10.19491/j.issn.1001-9278.2018.03.018

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Synergistic Effect of Zinc Hydroxystannate/Reduced Graphene Oxide Hybrid and Magnesium Hydroxide on Flame-retardant PVC

  

  • Received:2017-11-22 Revised:2018-01-02 Online:2018-03-26 Published:2018-04-26

Abstract: A self-made zinc hydroxystannate (ZHS)/reduced graphene oxide (RGO) hybrid (ZHS-RGO) was synergized with magnesium hydroxide (MH) to prepare flame-retardant soft PVC, and synergistic effects of ZHS/MH and ZHS-RGO/MH on flame retardant performance and smoke suppression of the resulting soft PVC were investigated by limiting oxide index, micro-scale combustion calorimetry (MCC) and cone calorimetry (CCT). The results indicated that there was a synergistic effect between MH and ZHS or ZHS-RGO on the flame retardant performance and smoke suppression of the soft PVC. PVC/10ZHS-RGO/5MH samples presented a peak heat release rate of 436 kW/m2 in MCC test and total smoke release of 23.62 m2 in CCT test, which was lower than those of PVC/10ZHS/5MH sample by 38.8 % and 12.0 %, respectively. RGO in the hybrid exhibited a good physical barrier effect.