CAJ | 학술논문

为了确定硝化纤维（含氮量11．89％～13．5％）的热物性参数，进行热分析计算，揭示其反应动力学机制，采用激光闪射法和差示扫描量热法对含氮量12％的硝化纤维的热物性参数进行了测量。给出了其熔点以下25～140℃的热扩散率、比热容及热导率的数值。结果表明，随着温度的升高，比热容逐渐增大，而热导率和热扩散率有所减小，但变化幅度并不显著。在热分析计算时，这些参数可近似为一组平均值：cp ＝1．131 J? g-1? K-1，D＝0．413 mm2? s-1，λ＝0．142 W? m-1? K-1。
위료학정초화섬유（함담량11．89％～13．5％）적열물성삼수，진행열분석계산，게시기반응동역학궤제，채용격광섬사법화차시소묘량열법대함담량12％적초화섬유적열물성삼수진행료측량。급출료기용점이하25～140℃적열확산솔、비열용급열도솔적수치。결과표명，수착온도적승고，비열용축점증대，이열도솔화열확산솔유소감소，단변화폭도병불현저。재열분석계산시，저사삼수가근사위일조평균치：cp ＝1．131 J? g-1? K-1，D＝0．413 mm2? s-1，λ＝0．142 W? m-1? K-1。
In order to obtain the thermal physical parameters of nitrocellulose (nitrogen content 11.89%~13.5%) to make the thermal analysis calculations and reveal the reaction dynamics mechanism, laser flash method and differential scanning calorimetric (DSC) method were used to measure the thermal physical parameters of nitrocellulose with nitrogen content 12%(NC(12%N)). The values of thermal diffusivity, specific heat capacity, and thermal conductivity were obtained at temperature ranging from 25℃to 140 ℃.Results show that with the increase of temperature, the specific heat capacity increases, while the thermal conductivity and thermal diffusivity decrease.But the changes are not obvious.So these parameters can be determinatal as:in the calculation of thermal analysis:cp =1.131 J? g-1? K-1 ,D=0.413 mm2? s-1 ,λ=0.142 W? m-1? K-1 .