Abstract

Understanding the mechanism of thermal degradation of a material may suggest a promising way for further improving its thermal properties. poly(melamine-co-phenolic resin) (P(M-co-PR)) has been widely used in flame resistant and fire-proof materials. Our characterization of the thermal degradation of P(M-co-PR) is described in this work. Fourier-transform infrared (FTIR) and X-ray photo-electron spectroscopy (XPS) analyses were used to investigate the structural evolution during the thermal degradation of the copolymer. The evolutions of C = N and C-N bonding in heteroaromatic rings were monitored during the degradation process by C1s and N1s XPS spectra. The degradation processes of P(M-co-PR) is divided into three stages. The degradation kinetics of P(M-co-PR) was researched by using the Ozawa and Kissinger activation energy equation methods. The conclusion is that the Kissinger equation applied to the first stage, and the Ozawa equation applied to the second and third stages.

摘要

了解材料的热降解机理可能会提出一种有希望的方法，以进一步改善其热性能。聚（三聚氰胺-共-酚醛树脂）（P（M-co-PR））已广泛用于阻燃和防火材料。这项工作描述了我们对P（M-co-PR）热降解的表征。使用傅里叶变换红外（FTIR）和X射线光电子能谱（XPS）分析来研究共聚物热降解过程中的结构演变。在降解过程中，通过C1s和N1s XPS光谱监测杂芳环中C = N和CN键的演变。P（M-co-PR）的降解过程分为三个阶段。利用小泽和基辛格活化能方程法研究了P（M-co-PR）的降解动力学。