苯酰亚胺结构对PET阻燃抗熔滴及抑烟的贡献

陈琳; 吴嘉宁; 倪延朋; 付腾; 吴志正; 汪秀丽; 王玉忠

doi:10.11777/j.issn1000-3304.2017.17079

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苯酰亚胺结构对PET阻燃抗熔滴及抑烟的贡献

研究论文 | 更新时间：2021-01-26

- 苯酰亚胺结构对PET阻燃抗熔滴及抑烟的贡献
  增强出版
- Contribution of Phenylimide to Flame Retardancy, Anti-dripping and Smoke Suppression of PET
- 高分子学报 2017年第7期页码：1207-1214
- 作者机构：
  
  四川大学化学学院高分子材料工程国家重点实验室环保型高分子材料国家地方联合工程实验室成都 610064
- 作者简介：
  
  王玉忠, E-mail:yzwang@scu.edu.cn Yu-zhong Wang, E-mail:yzwang@scu.edu.cn
- 基金信息：
  
  国家重点研发计划课题(2016YFB0401701);国家自然科学基金(51433003);国家自然科学基金(51373065)
- DOI：10.11777/j.issn1000-3304.2017.17079
  中图分类号：
- 纸质出版日期：2017-7，
  
  收稿日期：2017-3-31，
  
  修回日期：2017-4-30，
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陈琳, 吴嘉宁, 倪延朋, 付腾, 吴志正, 汪秀丽, 王玉忠. 苯酰亚胺结构对PET阻燃抗熔滴及抑烟的贡献[J]. 高分子学报, 2017,(7):1207-1214.

Lin Chen, Jia-ning Wu, Yan-peng Ni, Teng Fu, Zhi-zheng Wu, Xiu-li Wang, Yu-zhong Wang. Contribution of Phenylimide to Flame Retardancy, Anti-dripping and Smoke Suppression of PET[J]. Acta Polymerica Sinica, 2017,(7):1207-1214.
陈琳, 吴嘉宁, 倪延朋, 付腾, 吴志正, 汪秀丽, 王玉忠. 苯酰亚胺结构对PET阻燃抗熔滴及抑烟的贡献[J]. 高分子学报, 2017,(7):1207-1214. DOI： 10.11777/j.issn1000-3304.2017.17079.

Lin Chen, Jia-ning Wu, Yan-peng Ni, Teng Fu, Zhi-zheng Wu, Xiu-li Wang, Yu-zhong Wang. Contribution of Phenylimide to Flame Retardancy, Anti-dripping and Smoke Suppression of PET[J]. Acta Polymerica Sinica, 2017,(7):1207-1214. DOI： 10.11777/j.issn1000-3304.2017.17079.

摘要

通过本体聚合方法合成了一系列侧链含苯酰亚胺结构的聚对苯二甲酸乙二酯（PET）共聚酯.研究发现，苯酰亚胺单元的引入不仅提高了共聚酯的玻璃化转变温度（

）和高温成炭性，并且大大降低了共聚酯高温下的热分解速率.随着苯酰亚胺含量的增加，共聚酯表现出更高的氧指数（LOI）值和更好的阻燃抗熔滴效果.锥形量热测试结果表明，苯酰亚胺结构的引入可以有效地降低共聚酯的峰值热释放速率（p-HRR）、峰值烟释放速率（p-RSR）和总烟释放量（TSR）.通过对纯PET和共聚酯燃烧测试后残炭的结构和形貌分析，发现苯酰亚胺结构有助于共聚酯形成石墨化程度更高的致密炭层，这些炭层起到隔热隔氧和抑制有机可燃烟气挥发的作用，在不引入传统阻燃剂的情况下，赋予共聚酯很好的本征阻燃性及抑烟性.

Abstract

A phenylimide-containing monomer was first introduced into PET backbone by bulk copolymerization

and a series of inherently flame-retardant

anti-dripping and smoke-suppressed copolyesters

P(ET-

-BN)

where

denotes the molar part of BN per hundred mole of dimethyl terephthalate (DMT) (namely

BN:DMT=

:100)

were successfully synthesized. Thermogravimetric analysis (TGA) indicated that the introduction of the phenylimide group not only increased the char residue of the copolyesters at high temperatures

but also greatly decreased the thermal decomposition rate of the copolyesters. The initial decomposing temperature (

) of the copolyesters showed a slight increase compared with that of PET

indicating that the original thermal stability was maintained. With increasing the proportion of phenylimide

the copolyesters exhibited higher glass transition temperature (

). Further more

the higher was the phenylimide content

the higher was the limiting oxygen index (LOI). When P(ET-

-BN)

was tested at a high oxygen concentration of 29%

flame propagation was obviously slowed and extinguished within 52 s. After LOI test

the top zone of P(ET-

-BN)

specimen was covered by intumescent char layer

and no dripping was observed. Compared with those of neat PET

the peak heat release rate (p-HRR)

peak release smoke rate (p-RSR) and total smoke release (TSR) of P(ET-

-BN)

obtained from cone calorimetry

were reduced by 51.5%

44.7% and 31.1%

respectively

indicating its inherently low flammability and smoke suppression. Raman spectroscopy indicated that the formation of a thermally stable graphitic structure was promoted by the phenylimide at high temperatures. It could also be proved by SEM that the char layer of the copolyester was compact and coherent

which took an active part in isolating the unburned polymer from heat source

cutting off oxygen and preventing the volatilization of flammable fragments

resulting in excellent inherent flame retardancy and smoke suppression. Without traditional flame retardant elements

such as chloride

bromine and phosphorus

this high-performance copolyester was only composed of carbon

nitrogen

hydrogen and oxygen

which would be really eco-friendly.

关键词

苯酰亚胺PET共聚酯抑烟性本征阻燃成炭性

Keywords

PhenylimidePET CopolyesterFlame retardanceSmoke suppressionChar-forming

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