不同加热面毛竹材燃烧性能研究  

Study on Burning Behaviour of Phyllostachys pubescens with Different Heated Surface

作　　者：卢凤珠[1] 陈飞 马灵飞[1] 马乃训[3] 

机构地区：[1]浙江林学院工程学院,浙江临安311300 [2]浙江省临安市锦城镇林业工作站,浙江临安311300 [3]中国林业科学研究院亚热带林业研究所,浙江富阳311400

出　　处：《林业科学研究》2007年第5期726-730,共5页Forest Research

基　　金：浙江省科技厅重大项目"速生林木与竹类资源精深加工及高效利用共性关键技术及产品开发"(2003C12009)

摘　　要：Burning behaviour of Phyllostachys pubescens aged 6 years with different heated surface were tested by cone calorimeter with the heat irradiance 50 kW·m-2.The results showed that the ignition time of bamboo wood was in order of outer culm>inner culm>middle culm when the tangential section was used as a heated surface.Meanwhile,with the radial section or cross section was used as a heated surface,the ignition time of bamboo wood was in order of outer culm>middle culm>inner culm.When the tangential section,the radial section and cross section of middle culm were used as heated surface,the longest ignition time was produced by the cross section.The total heat release of 600 s of bamboo wood was in order of outer culm>inner culm>middle culm.The pkHRR of outer culm and inner culm was at first peak,the time of the 2nd pkHRR of bamboo wood was delayed from inner culm to outer culm.When the cross section used as the heat surface,the width of the 2nd pkHRR increased.The carbonization time became shorter.There were two stronger process of smoke,one was before the igniting and another was after the charring finished.The weakest smoke appears in the charring and flameless combustion stage.The mass loss and the heat release indicated the same changing curves.Burning behaviour of PhyUostachys pubescens aged 6 years with different heated surface were tested by cone calorimeter with the heat irradiance 50 kW · m^-2. The results showed that the ignition time of bamboo wood was in order of outer culm 〉 inner culm 〉 middle culm when the tangential section was used as a heated surface. Meanwhile, with the radial section or cross section was used as a heated surface, the ignition time of bamboo wood was in order of outer culm 〉 middle culm 〉 inner culm. When the tangential section, the radial section and cross sec- tion of middle culm were used as heated surface, the longest ignition time was produced by the cross section. The to- tal heat release of 600 s of bamboo wood was in order of outer culm 〉 inner culm 〉 middle culm. The pkHRR of out- er culm and inner culm was at first peak, the time of the 2^nd pkHRR of bamboo wood was delayed from inner culm to outer culm. When the cross section used as the heat surface, the width of the 2^nd pkHRR increased. The carboni- zation time became shorter. There were two stronger process of smoke, one was before the igniting and another was after the charring finished. The weakest smoke appears in the charring and flameless combustion stage. The mass loss and the heat release indicated the same changing curves.

关 键 词：毛竹材 竹壁层 加热面 燃烧性能 锥形量热仪 

分 类 号：S795.7[农业科学—林木遗传育种]