东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (9): 1357-1360.DOI: -

• 资源与土木工程 • 上一篇    下一篇

热重法研究聚苯硫醚滤料的热稳定性

常德强1,2，柳静献1,2，毛宁1,2，陈宝智1   

  1. (1东北大学资源与土木工程学院，辽宁沈阳110819；2东北大学深部金属矿山安全开采教育部重点实验室，辽宁沈阳110819)
  • 收稿日期:2013-03-22 修回日期:2013-03-22 出版日期:2013-09-15 发布日期:2013-04-22
  • 通讯作者: 常德强
  • 作者简介:常德强(1979-)，男，山东夏津人，东北大学讲师，博士研究生；柳静献(1966-)，男，河北元氏人，东北大学教授；陈宝智(1943-)，男，辽宁法库人，东北大学教授，博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2013AA065101)；国家科技支撑计划项目(2013BAC01B02)；江苏省科技成果转化专项资金资助项目(BA2012021).

Thermal Stability of Polyphenylene Sulfide Filter Media Using Thermogravimetry

CHANG Deqiang1,2， LIU Jingxian1,2， MAO Ning1,2， CHEN Baozhi1   

  1. 1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines， Northeastern University， Shenyang 110819， China.
  • Received:2013-03-22 Revised:2013-03-22 Online:2013-09-15 Published:2013-04-22
  • Contact: CHANG Deqiang
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摘要： 为了研究聚苯硫醚(简称PPS)滤料的热稳定性，采用非等温热重法分析了2种PPS滤料的热降解动力学行为，用Flynn-Wall-Ozawa模型计算了PPS滤料在N2气氛中的热降解反应活化能E，并对PPS滤料的热稳定性进行了探讨.结果发现，N3试样的热分解初始温度高于B1试样，在升温速率为5K/min时，N3试样失重初始温度比B1试样高12℃；在整个升温过程中，N3试样的失重率为5240%，B1试样的失重率为5367%，N3试样的失重率比B1试样低；同时，计算所得N3试样平均热解活化能比B1试样大55kJ/mol，可知N3试样的热稳定性较B1试样更好，动力学分析可作为滤料热稳定性评价的重要方法.

关键词: 聚苯硫醚, 滤料, 热分解, 动力学, 热稳定性

Abstract: To study the thermal stability of PPS(polyphenylene sulfide)filter media， thermal degradation kinetics behavior of two kinds of PPS filter media was analyzed by thermogravimetry. Thermal degradation activation energy of PPS filter media in N2 was obtained according to FlynnWallOzawa method， and thermal stability of PPS filter media was discussed. The results showed that the initial decomposition temperature and activation energy of N3 sample are both higher than those of B1 sample; at the heating rate of 5K/min，the initial weight loss temperature of N3 sample is 12℃ higher than that of B1 sample; during the whole heating process， the weight loss rate of N3 sample is 5240% which is smaller than that of B1(5367%); the average thermal degradation activation energy of N3 is 55kJ/mol，bigger than that of B1 sample. Consequently， the thermal stability of N3 sample is better than that of B1 sample， and kinetic analysis can be used as an important method to evaluate the thermal stability of filter media.

Key words: polyphenylene sulfide, filter media, thermal decomposition, kinetics, thermal stability

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