应急热防护织物有效导热系数分形模型  

Fractal model for effective thermal conductivity of emergency thermal protective fabrics

作　　者：朱方龙[1] 张渭源[2] 

机构地区：[1]中原工学院服装设计与工程系,河南郑州450007 [2]东华大学服装学院,上海200051

出　　处：《纺织学报》2008年第6期39-43,共5页Journal of Textile Research

摘　　要：运用分形理论对应急热防护织物的内部微结构进行分析研究,结果表明分形维数与纤维体积分数是影响热防护织物传热的2个重要参数。根据等效热阻法建立预测高温下热防护织物有效导热系数的分形模型,求出基于分形理论的热防护织物的有效导热系数表达式,所得理论结果与实验值保持良好的一致性,同时合理反映出高温热辐射在织物传热中的重要作用。Microstructure of thermal protective fabrics was investigated based on fractal theory. It was found that the fractal dimension and volume fraction of fiber material are two important parameters affecting heat conduction. A fractal model for effective thermal conductivity of thermal protective fabrics at high temperature was developed according to the equivalent heat resistances, and an expressive formula of effective thermal conductivity of the thermal protective fabric based on fractal theory is derived. The results predicted with the model are in good agreement with experimental data. It also reveals the important effect of thermal radiation on heat transfer in fabric.

关 键 词：热防护织物 有效导热系数 分形理论 模型 

分 类 号：TS101.923[轻工技术与工程—纺织工程]