粉末涂料爆炸过程动力学和热力学研究  

Study on Explosion Kinetics and Thermodynamics of Powder Coatings

作　　者：秦文静 范宾 刘嘉伟 王耀 肖秋平 Qin Wenjing;Fan Bin;Liu Jiawei;Wang Yao;Xiao Qiuping(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China;Shanghai Engineering Research Center of Chemicals Public Safety,Shanghai 200062,China;School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]上海化工研究院有限公司,上海200062 [2]上海化学品公共安全工程技术研究中心,上海200062 [3]南京理工大学,南京210094

出　　处：《涂料工业》2019年第11期40-44,50,共6页Paint & Coatings Industry

基　　金：上海市科学技术委员会科研项目(17DZ2200600)

摘　　要：为了解喷涂工艺过程中粉末涂料的爆炸危险性,通过Siwek 20L球形爆炸装置对环氧、聚酯以及丙烯酸这3种常用的粉末涂料进行了爆炸动力学以及热力学参数的实验研究,同时结合热重和DSC 2种分析方法,比较不同种类粉末涂料爆炸过程的危险性。结果表明:3种粉末涂料中,丙烯酸粉末涂料的最大爆炸压力和压力上升速率最大,为0.730 MPa和76.0 MPa/s,爆炸危险等级为St2级;聚酯粉末涂料的最大爆炸压力和压力上升速率最小,为0.617 MPa和37.9 MPa/s,爆炸危险等级为St1级。环氧、聚酯以及丙烯酸粉末涂料的玻璃化转变温度分别为62℃、57℃和58℃,在惰性气氛中失质量率分别为52.9%、98.0%和97.3%,空气气氛中失质量率均增大。In order to understand the explosion hazard of powder coatings during spraying process,the explosion kinetics and thermodynamic parameters of epoxy,polyester and acrylicpowder coatings were studied by means of Siwek 20 L sphere explosive device. At the same time,combined with TG and DSC analysis methods in different atmosphere,the hazard of explosion process of different kinds of powder coatings were compared. The results showed that the acrylic powder coatings showed the highest maximum explosion pressure and pressure rising rate among the three,which were 0. 730 MPa and 76. 0 MPa/s,and the explosion hazard grade was St2 grade. The maximum explosion pressure and pressure rising rate of polyester powder coatings were the lowest,which were 0. 617 MPa and 37. 9 MPa/s,and the explosion hazard grade was St1 grade. The glass transition temperatures of epoxy,polyester and acrylic powder coatings were 62 ℃,57 ℃ and 58 ℃ rescpevtively. The weight loss rates in inert atmosphere were 52. 9%,98. 0% and 97. 3%. And the air atmosphere could increase the weight loss rate.

关 键 词：环氧粉末涂料 聚酯粉末涂料 丙烯酸粉末涂料 爆炸 热力学 动力学 

分 类 号：TQ639.8[化学工程—精细化工]