英语翻译Many researchers have conducted numerous studies on ther

英语翻译
Many researchers have conducted numerous studies on thermaldegradation of various polymers .It is thought that thermal degradation isalways the initial step of solid combustion processes and provides flammablevolatile products to support the combustion.The objective of this work is toresearch the thermaldegradation characteristics and volatile products of insu- lation materials,such as PU,XPS and EPS.
2.Experimental
The experiment iscomposed of two parts.The first part (TG experiment) is to obtain the kineticsof materials thermal degradation and the second part (STA experiment) is forthe characterization and volatile products.
2.1.Experimentalapparatus
Thermogravimetry experimentwas carried out on a Mettler-Toledo TGA/SDTA 851e thermal analyzer.Andsimultaneous thermal analysis experiment was performed on a NETZSCH STA449C,NETZSCH-QMS403C,and NICOLET6700 FTIR coupling system .It can provide both thethermal

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