Evaluation of Thermal Hazard of Composite Modified Double-base Propellant by Microcalorimetery Method

The thermal decomposition behavior of composite modified double-base（CMDB） propellant containing cyclotrimethylene trinitramine（RDX） was studied via a Calvet microcalorimeter at five different heating rates. The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic process...

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Veröffentlicht in:	Chemical research in Chinese universities 2010-07, Vol.26 (4), p.626-629
1. Verfasser:	XUE Liang ZHAO Feng-qi XING Xiao-ling XU Si-yu PEI Qing GAO Yin HU Rong-zu
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Schlagworte:	CMDB推进剂升温速率复合改性改性双基推进剂热分解行为热危险性热复合评价方法
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description	The thermal decomposition behavior of composite modified double-base（CMDB） propellant containing cyclotrimethylene trinitramine（RDX） was studied via a Calvet microcalorimeter at five different heating rates. The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic processes were obtained by Kissinger＇s method and Ozawa＇s method. The entropy of activation（△S^≠）, the enthalpy of activation（△H^≠）, and the free energy of activation（△G^≠） of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion（Tb）, the self acceleration decomposition temperature（Tsgox）, the adiabatic decomposition temperature increment（ATad） and the time-to-explosion of adiabatic system（t） were presented as 145.3 ℃, 138.15 ℃, 1634 K and 583.71 s（n=0） and 586.28 s（n=1）, respectively.
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The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic processes were obtained by Kissinger＇s method and Ozawa＇s method. The entropy of activation（△S^≠）, the enthalpy of activation（△H^≠）, and the free energy of activation（△G^≠） of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion（Tb）, the self acceleration decomposition temperature（Tsgox）, the adiabatic decomposition temperature increment（ATad） and the time-to-explosion of adiabatic system（t） were presented as 145.3 ℃, 138.15 ℃, 1634 K and 583.71 s（n=0） and 586.28 s（n=1）, respectively.</description><identifier>ISSN: 1005-9040</identifier><identifier>EISSN: 2210-3171</identifier><language>eng</language><publisher>Xi'an Modern Chemistry Research Institute, Xi'an 710065,P. R. 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The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic processes were obtained by Kissinger＇s method and Ozawa＇s method. The entropy of activation（△S^≠）, the enthalpy of activation（△H^≠）, and the free energy of activation（△G^≠） of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion（Tb）, the self acceleration decomposition temperature（Tsgox）, the adiabatic decomposition temperature increment（ATad） and the time-to-explosion of adiabatic system（t） were presented as 145.3 ℃, 138.15 ℃, 1634 K and 583.71 s（n=0） and 586.28 s（n=1）, respectively.</description><subject>CMDB推进剂</subject><subject>升温速率</subject><subject>复合改性</subject><subject>改性双基推进剂</subject><subject>热分解行为</subject><subject>热危险性</subject><subject>热复合</subject><subject>评价方法</subject><issn>1005-9040</issn><issn>2210-3171</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNotkE1LAzEYhIMoWKv_IXjzsPDmY9Pdo9RqhYoe6rnk4003Nd3U7FZbf70r9TQwPMwMc0ZGnDMoBJuwczJiAGVRg4RLctV1GwBRKyVHBGdfOu51H1JLk6fLBvNWRzrXPzq7P2eatrvUhR7pS3LBB3T0Ie1NxMLoDulbTjuMUbc9NUf6EmxOVseUwxZ7zIODfZPcNbnwOnZ4869j8v44W07nxeL16Xl6vygsZ6ovSoVeCF4B85VHDrXTsnalYaBsJSfKlqWwzChuhfG2cqCcksZVvEanlAcxJnen3G_det2uV5u0z-3QuFq7w6E5HDcchick8MnA3p5Y26R2_RkG2mj74UPElZA1H2ZI8Qs0WWG-</recordid><startdate>20100725</startdate><enddate>20100725</enddate><creator>XUE Liang ZHAO Feng-qi XING Xiao-ling XU Si-yu PEI Qing GAO Yin HU Rong-zu</creator><general>Xi'an Modern Chemistry Research Institute, Xi'an 710065,P. 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The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic processes were obtained by Kissinger＇s method and Ozawa＇s method. The entropy of activation（△S^≠）, the enthalpy of activation（△H^≠）, and the free energy of activation（△G^≠） of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion（Tb）, the self acceleration decomposition temperature（Tsgox）, the adiabatic decomposition temperature increment（ATad） and the time-to-explosion of adiabatic system（t） were presented as 145.3 ℃, 138.15 ℃, 1634 K and 583.71 s（n=0） and 586.28 s（n=1）, respectively.</abstract><pub>Xi'an Modern Chemistry Research Institute, Xi'an 710065,P. R. China</pub><tpages>4</tpages></addata></record>
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title	Evaluation of Thermal Hazard of Composite Modified Double-base Propellant by Microcalorimetery Method
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