| SnO2和SiO2用于PVC的阻燃消烟及协同作用 |
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| 引用本文： | 王海,国占生,徐建中,田春明.SnO2和SiO2用于PVC的阻燃消烟及协同作用[J].中国塑料,2005,19(6):86-90. |
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| 作者姓名： | 王海 国占生 徐建中 田春明 |
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| 作者单位： | 衡水学院化学系 河北衡水053000
(王海，国占生)，河北大学化学与环境科学学院 河北保定071002
(徐建中)，河北大学化学与环境科学学院 河北保定071002(田春明) |
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| 基金项目： | 河北省指导性课题资助项目(04212712 |
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| 摘 要： | 研究了二氧化锡和二氧化硅对软PVC阻燃消烟性的影响。通过对极限氧指数、剩炭率、烟密度的测定和DTATG曲线的分析证明,添加8g二氧化锡/二氧化硅复合阻燃剂的PVC的氧指数和剩炭率比未添加的分别增高5.5个单位和4.1%,烟密度降低16.4%,降解活化能分别降低38kJ/mol和23.1kJ/mol,从而证明二氧化锡/二氧化硅复合阻燃剂对于PVC是一种很好的阻燃消烟剂,二氧化锡和二氧化硅有很好的协同作用。同时证明这种复合阻燃剂能代替三氧化二锑,使产品的成本进一步降低。
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| 关 键 词： | 聚氯乙烯 阻燃 消烟 协同 热降解 |
The Synergistic Effect and Smoke Suppression of SnO_2 and SiO_2 Used in Flame Retardant PVC |
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| WANG Hai,GUO Zhan-sheng,XU Jian-zhong,TIAN Chun-ming.The Synergistic Effect and Smoke Suppression of SnO_2 and SiO_2 Used in Flame Retardant PVC[J].China Plastics,2005,19(6):86-90. |
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| Authors: | WANG Hai GUO Zhan-sheng XU Jian-zhong TIAN Chun-ming |
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| Affiliation: | WANG Hai1,GUO Zhan-sheng1,XU Jian-zhong2,TIAN Chun-ming2 |
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| Abstract: | The flame retardant and smoke suppressant effects of SnO_2 and SiO_2 for PVC and their synergistic effect were studied through measurements of LOI, the char residue, the smoke density rating (SDR), and DTA-TG analysis. SnO_2 or SiO_2 alone could enhance the LOI and the char residue by 5.5 % and 4.1 %, and reduce SDR and the activation energy by 16.4 % and 38 kJ/mol respectively. SnO_2 possessed a higher flame retardancy for PVC and showed a good synergistic effect with SnO_2 and SiO_2. It can be concluded that SnO_2 may replace Sb_2O_3 in flexible PVC, at least in part. The mechanism of the retardation for SnO_2 was also proposed. |
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| Keywords: | poly(vinyl chloride) flame retardancy smoke suppression synergistic effect thermal degradation |
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