Coal is a major energy in our country.The research about the combustion reaction and the kinetics of coal can provide basic data for developing the technology to utilize coal more cleanly and more efficiently.In this ...Coal is a major energy in our country.The research about the combustion reaction and the kinetics of coal can provide basic data for developing the technology to utilize coal more cleanly and more efficiently.In this paper,thermogravimetryic analysis(TGA) was used to study the effect of heating rate on the combustion reaction of coal obtained from Shanxi Yangquan.Furthermore the combustion kinetics of which was studied by Flynn-Wall-Ozawa method and the distribution of activation energy model(DAEM).The results showed that the initial combustion temperature,the maximum combustion reaction rate temperature and the burning temperature were all elevated with the heating rate.The activation energy of combustion reaction calculated by Flynn-Wall-Ozawa method when α was 0.2,0.5,0.8 respectively,was 117.0,91.7,73.7 kJ/mol respectively.The value of distribution of activation energy obtained from DAEM was at the range from 47.7 to 115.0 kJ/mol.展开更多
通过分析近10年Web of Science核心合集数据库中环氧树脂阻燃与增强的相关文献,综述了环氧树脂阻燃增强的主要方法,介绍了通过阻燃剂分子设计、同时添加阻燃剂和无机纳米粒子或纤维填料实现环氧树脂阻燃与增强的研究成果,并通过极限氧指...通过分析近10年Web of Science核心合集数据库中环氧树脂阻燃与增强的相关文献,综述了环氧树脂阻燃增强的主要方法,介绍了通过阻燃剂分子设计、同时添加阻燃剂和无机纳米粒子或纤维填料实现环氧树脂阻燃与增强的研究成果,并通过极限氧指数(LOI)、最大热释放速率(PHRR)以及冲击强度、拉伸强度、弯曲强度等性能参数对复合材料的阻燃性能和力学性能进行了评价。指出了目前阻燃增强环氧树脂方法存在的不足,并对其未来的研究方向进行了展望。展开更多
文摘Coal is a major energy in our country.The research about the combustion reaction and the kinetics of coal can provide basic data for developing the technology to utilize coal more cleanly and more efficiently.In this paper,thermogravimetryic analysis(TGA) was used to study the effect of heating rate on the combustion reaction of coal obtained from Shanxi Yangquan.Furthermore the combustion kinetics of which was studied by Flynn-Wall-Ozawa method and the distribution of activation energy model(DAEM).The results showed that the initial combustion temperature,the maximum combustion reaction rate temperature and the burning temperature were all elevated with the heating rate.The activation energy of combustion reaction calculated by Flynn-Wall-Ozawa method when α was 0.2,0.5,0.8 respectively,was 117.0,91.7,73.7 kJ/mol respectively.The value of distribution of activation energy obtained from DAEM was at the range from 47.7 to 115.0 kJ/mol.
文摘通过分析近10年Web of Science核心合集数据库中环氧树脂阻燃与增强的相关文献,综述了环氧树脂阻燃增强的主要方法,介绍了通过阻燃剂分子设计、同时添加阻燃剂和无机纳米粒子或纤维填料实现环氧树脂阻燃与增强的研究成果,并通过极限氧指数(LOI)、最大热释放速率(PHRR)以及冲击强度、拉伸强度、弯曲强度等性能参数对复合材料的阻燃性能和力学性能进行了评价。指出了目前阻燃增强环氧树脂方法存在的不足,并对其未来的研究方向进行了展望。
