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| 破碎聚氨酯硬泡时CFC-11的释放量和残留量 | |
| 引用本文： | 杨 勇,刘景洋,郭玉文,杨 敏.破碎聚氨酯硬泡时CFC-11的释放量和残留量[J].环境科学研究,2009,22(8):961-965. |
| 作者姓名： | 杨 勇 刘景洋 郭玉文 杨 敏 |
| 作者单位： | 1. 中国环境科学研究院,北京,100012;西南交通大学环境科学与工程学院,四川,成都,610031 2. 中国环境科学研究院,北京,100012 3. 西南交通大学环境科学与工程学院,四川,成都,610031 |
| 基金项目： | 国家"十一五"科技支撑计划项目，环保公益性行业科研专项 |
| 摘 要： | 将聚氨酯硬泡在密闭室中破碎至不同粒径,低温加热后进行氧弹燃烧试验,利用气相色谱/质谱联用(GC/MS)定量每个过程中发泡剂CFC-11(CFCl3)的释放量.结果表明:CFC-11释放量随破碎颗粒粒径的减小而增大,过4 mm筛的颗粒释放效果最佳,CFC-11释放量占其总量的67%;泡沫中w(CFC-11)为20%左右,其中77%的CFC-11包裹在泡孔中,23%被泡沫固相吸附;即使将泡沫过1 mm筛,部分未打破泡孔中仍有6%的CFC-11,当破碎粒径接近泡孔平均直径0.3～0.4 mm时,CFC-11释放量保持不变,吸附于泡沫固相中的CFC-11在破碎过程中很难释放. |
| 关 键 词： | 破碎 聚氨酯硬泡 释放量 残留量 含量分布 |
| 收稿时间： | 2008/10/20 0:00:00 |
| 修稿时间： | 2008/12/18 0:00:00 |
Release and Residual Mass and Content Distribution of CFC-11 during Shredding of Rigid Polyurethane Foam |
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| YANG Yong,LIU Jing-yang,GUO Yu-wen and YANG Min.Release and Residual Mass and Content Distribution of CFC-11 during Shredding of Rigid Polyurethane Foam[J].Research of Environmental Sciences,2009,22(8):961-965. | |
| Authors: | YANG Yong LIU Jing-yang GUO Yu-wen and YANG Min |
| Abstract: | After rigid polyurethane foam(PUR foam) was shredded to different particle sizes in a closed room,foam particles were heated at low temperature and then an oxygen bomb was used to combust the foam particles.Finally,the release mass of blowing agent CFC-11 in each process was determined by GC/MS.The results show that the release mass of CFC-11 increases with the decrease of shredding size;shredding for passing through a 4 mm sieve is the optimum such that 67% of the total content of CFC-11 is released.The co... |
| Keywords: | CFC-11 |
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