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Thermal Behavior and Thermal Safety of Nitrate Glycerol Ether Cellulose 被引量:1
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作者 XU Si-yu ZHAO Feng-qi +5 位作者 YI Jian-hua GAO Hong-xu SHAO Zi-qiang HAO Hai-xia HU Rong-zu PEI Qing 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2012年第3期516-519,共4页
The thermal behavior, nonisothermal decomposition reaction kinetics and specific heat capacity of nitrate glycerol ether cellulose(NGEC) were determined by thermogravimetric analysis(TGA), differential scanning ca... The thermal behavior, nonisothermal decomposition reaction kinetics and specific heat capacity of nitrate glycerol ether cellulose(NGEC) were determined by thermogravimetric analysis(TGA), differential scanning calori- metry(DSC) and microcalorimetry. The apparent activity energy(Ea), reaction mechanism function, quadratic equa- tion of specific heat capacity(Cp) with temperature were obtained. The kinetic parameters of the decomposition reac- tion are Ea=170.2 kJ/mol and lg(A/s^-l)=16.3. The kinetic equation isf(α)=(4/3)(1-α)[-ln(1-α)]^1/4. The specific heat capacity equation is Cp=1.285-6.276×10^-3T+1.581×10^-5T^2(283 K〈T〈353 K). With these parameters, the thermal safety properties of NGEC were studied, such as the self-accelerating decomposition temperature(TSADT), critical temperature of thermal explosion(Tb) and adiabatic time-to-explosion(tTlad). The results of the thermal safety evalua- tion of NGEC are: TSADV=459.6 K, Tb=492.8 K, tTlad=0.8 S. 展开更多
关键词 Nitrate glycerol ether cellulose thermal decomposition reaction kinetics thermal safety property
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