EPS保温材料在氮气中的热解特性研究
摘要本文运用热重（TG）和联用红外和质谱的热分析技术（TG-DSC-MS-IR）研究了模塑聚苯乙烯（EPS)有机保温材料的热解特性。利用Kissinger-Akahira-Sunose,Ozawa-Flynn-Wall和Coats-Redfern方法计算这些材料的活化能。通过联用的质谱和红外来研究挥发产物,并通过产物的红外3D谱图观察吸收而确定挥发产物。模塑聚苯乙烯（EPS)材料在氮气气氛中加热速率为10℃/min时的热解中存在着差异。EPS只有一个热失重阶段，在失重阶段吸收大量的热，失重达到100%，随着温度的升高，TG,DSC曲线向高温处移动。运用OFW求得不同转化率出的活化能，研究表明EPS在氮气气氛中热解活化能在整个热解过程中都是渐渐增大的。63757
关键词 热重分析 TG-DSC-MS-IR EPS 热解特性
毕业设计说明书（毕业论文）外文摘要
Title EPS thermal insulation material in the nitrogen gas in the pyrolysis characteristic research
Abstract
This article using the thermogravimetric (TG) and the combination of infrared and mass spectrum of thermal analysis technique (TG/DSC - MS - IR) molded polystyrene (EPS) were studied pyrolysis characteristics of organic heat preservation material. Using Kissinger - Akahira - Sunose, Ozawa - Flynn - Wall and Coats - Redfern method to calculate the activation energy of materials. Through the combination of mass spectrometry and infrared to study the volatile products, and by viewing the product 3 d infrared spectrum diagram absorption to determine the volatile products. Molding material polystyrene (EPS) in a nitrogen atmosphere heating rate is 10 ℃ / min when there is a difference in the pyrolysis. EPS is only one hot weightless stage, stage in weightlessness to absorb large amounts of heat, weight loss of 100%, with the increase of temperature, TG, DSC curves move to high temperature. Use OFW different conversion rate of activation energy obtained, research has shown that EPS pyrolysis in nitrogen atmosphere activation energy in the pyrolysis process is gradually enlarged.
keyworde Thermogravimetric analysis of TG DSC - MS - IR EPS Pyrolysis characteristics
目 录
1 引言 1
1．1 课题背景和意义 1
1．2 EPS保温材料热解特性现状 6
1. 3 主要工作和研究内容 9
2 实验装置与原理 9
2．1热分析 9
2.1.1热重分析仪 9
2.1.2差式扫描量热仪 9
2．2 热分析联用技术 10
3 EPS保温材料在氮气环境下的热解特性研究 11
3．1实验试样、仪器及条件 11
3．1.1试验试样 11
3．1.2 实验设备 11
3．1.3实验条件 12
3．2 结论与讨论 12
3.2.1 加热速率对EPS热解过程的影响 12
3.2.2加热速率对热解产物的影响 13
3.2.3 EPS在氮气中的热解动力学研究 22
结 论 26
致 谢 27
参考文献 28
1引言