合成技术及应用
閤成技術及應用
합성기술급응용
SYNTHETIC TECHNOLOGY AND APPLICATION
2013年
4期
17-20
,共4页
陈月君%吴娉婷%许华君%王依民%王燕萍
陳月君%吳娉婷%許華君%王依民%王燕萍
진월군%오빙정%허화군%왕의민%왕연평
半芳香聚酰胺%热降解动力学%活化能%非等温结晶动力学
半芳香聚酰胺%熱降解動力學%活化能%非等溫結晶動力學
반방향취선알%열강해동역학%활화능%비등온결정동역학
semi-aromatic polyamide%thermal degradation kinetics%activation energy%non-isothermal crystalli-zation kinetics
在 N2气氛下，用热重分析法研究了半芳香聚酰胺的热降解行为和热降解动力学。并用经 Jeziorny 修正的Arami 方程对其非等温结晶动力学进行了研究。结果表明：半芳香聚酰胺的热降解过程为一步反应，用 Kissinger 方法和Flynn-Wall-Ozawa 方法求得半芳香聚酰胺的热分解活化能分别为258．37 kJ /mol 和227．41 kJ /mol；在非等温条件下，半芳香聚酰胺结晶时可能以片晶形式生长，随着降温速率增大，转变成三维球晶生长。
在 N2氣氛下，用熱重分析法研究瞭半芳香聚酰胺的熱降解行為和熱降解動力學。併用經 Jeziorny 脩正的Arami 方程對其非等溫結晶動力學進行瞭研究。結果錶明：半芳香聚酰胺的熱降解過程為一步反應，用 Kissinger 方法和Flynn-Wall-Ozawa 方法求得半芳香聚酰胺的熱分解活化能分彆為258．37 kJ /mol 和227．41 kJ /mol；在非等溫條件下，半芳香聚酰胺結晶時可能以片晶形式生長，隨著降溫速率增大，轉變成三維毬晶生長。
재 N2기분하，용열중분석법연구료반방향취선알적열강해행위화열강해동역학。병용경 Jeziorny 수정적Arami 방정대기비등온결정동역학진행료연구。결과표명：반방향취선알적열강해과정위일보반응，용 Kissinger 방법화Flynn-Wall-Ozawa 방법구득반방향취선알적열분해활화능분별위258．37 kJ /mol 화227．41 kJ /mol；재비등온조건하，반방향취선알결정시가능이편정형식생장，수착강온속솔증대，전변성삼유구정생장。
Thermal degradation behavior and kinetics of semi-aromatic polyamide were studied by thermogravi-metric analysis (TG)at different heating rates under N 2 atmosphere.And the non-isothermal crystallization kinetics of semi-aromatic polyamide was investigated by the Avrami equations modified by Jeziorny.The results showed that the thermal degradation process of semi-aromatic polyamide was one step reaction in N 2 .The activation energy of the thermal degradation for semi-aromatic polyamide obtained by Kissinger method and Flynn-Wall-Ozawa were 258.37 kJ /mol and 227.41 kJ /mol,respectively.Under the non-isothermal condition,the semi-aromatic polyamide crystal might grow as lamella.With the cooling rate increasing,the crystallization form might transfer into three-dimensional spherulite.
