午夜精品福利视频,亚洲激情专区,免费看a网站,aa毛片,亚洲色图激情小说,亚洲一级毛片,免费一级毛片一级毛片aa

聚氯乙烯燃燒特性及HCl的生成機理

時間:2023-04-25 22:47:50 環(huán)境保護論文 我要投稿
  • 相關(guān)推薦

聚氯乙烯燃燒特性及HCl的生成機理

摘要: 采用熱重法對聚氯乙烯(PVC)的燃燒過程進行了研究,探討了聚氯乙烯燃燒特性,并由它們的微分熱重曲線計算出它們的反應(yīng)動力學參數(shù)及對影響反應(yīng)常數(shù)的因素進行了研究。同時,考察了恒速升溫和快速升溫過程HCl的生成特性。結(jié)果表明,PVC的燃燒機理是由三個過程決定的,可用三個一級反應(yīng)表示。PVC的燃燒過程的第一階段為脫氯階段。第二階段的活化能和指前因子明顯低于第一和第三階段。此階段為揮發(fā)分釋放階段。升溫速率的增加導致反應(yīng)開始溫度、最大反應(yīng)速率以及HCl開始釋放溫度的升高。 Abstract: The combustion characteristics of polyvinyl chloride (PVC) are investigated by means of thermogravimetry. The combustion activation energy and frequency factor are obtained by Doyle method. It was observed that PVC weight was reduced in three stages with exothermic reaction in its combustion. The first stage was caused by the chlorine removed from PVC. The volatile matter emission from PVC led to the second weight loss stage of PVC. The mechanism of PVC combustion can be expressed by three first-order kinetic equations. The beginning temperature of reaction, the max reaction rate and the temperature of HCl emission were increased with increasing heating rate. 作 者:   作者單位:   期 刊: 燃料化學學報  ISTICEIPKU   Journal: JOURNAL OF FUEL CHEMISTRY AND TECHNOLOGY  年,卷(期): 2000, 28(1)  分類號: X705  關(guān)鍵詞: PVC    熱重法    燃燒特性    Keywords: PVC    thermogravimetry    combustion characteristics   

【聚氯乙烯燃燒特性及HCl的生成機理】相關(guān)文章:

燃燒的作文09-20

燃燒的蠟燭作文07-27

蠟燭的燃燒作文08-18

燃燒與滅火反思03-02

激情在燃燒作文09-08

讓激情燃燒作文12-19

燃燒的男孩作文11-07

聲音的特性教學反思04-06

燃燒的是香煙,消耗的是生命10-25

沒有燃燒的紙杯作文08-08