有机硅树脂涂层碳纤维织物传热过程的数值模拟  

Numerical Simulation of Heat Transfer Process of Silicone Resin Coated Carbon Fiber Fabric

作　　者：张倩[1] 郑振荣[1] 毛科铸[2] 罗丽娟[2] 

机构地区：[1]天津工业大学纺织科学与工程学院 [2]航天材料及工艺研究所

出　　处：《纺织导报》2020年第5期77-80,共4页China Textile Leader

基　　金：天津科委自然科学基金项目(18JCYBJC86600);中国纺织工业联合会科技指导性项目(2017030);天津市教委科研计划项目(2018KJ194)。

摘　　要：为探究有机硅树脂涂层碳纤维织物在高温热流烧蚀下的传热过程,文章根据涂层织物结构参数和碳纤维的交织规律,建立涂层织物的三维几何模型;基于有机硅树脂和碳纤维纱线的烧蚀机制,创建了有机硅树脂涂层碳纤维织物烧蚀过程的数值模型,对涂层织物的热传递过程进行数值模拟。结果表明:与显微镜图像对比,涂层织物三维几何模型很好地反映了其几何结构特点;数值模拟结果可直观显示不同时间点涂层织物上的温度分布情况,利用石英灯烧蚀实验对该模型进行验证,在0~135 s,每隔1 s计算1次模拟背温与实验背温的相对误差,最后计算相对误差平均值为9.47%,说明在高温下涂层碳纤维织物传热数值模型能反映其传热过程。In order to investigate the heat transfer process of silicone resin coated carbon fiber fabric under high temperature heat flow ablation,a three-dimensional geometric model of coated fabric was established according to the structural parameters of the coating fabric and the interlacing of carbon fiber.Based on the ablation mechanism of silicone resin and carbon fiber yarn,a numerical model of the ablation process of silicone resin coated carbon fiber fabric was created to simulate the heat transfer process of coated fabric.The results show that compared with the microscope image,the three-dimensional geometric model of the coated fabric reflects its geometric structure well.The numerical simulation results can visually show the temperature distribution on the coated fabric at different time points.The model was verified by quartz lamp ablation test.The experimental data were in agreement with the numerical data,it’s because that to calculate the average relative error within 135 s,firstly calculate the relative error per 1 s,and finally take the average value,which is 9.47%.Therefore,the numerical model for the coated fabric is able to represent the heat transfer process of the coated carbon fiber fabrics.

关 键 词：涂层织物 三维几何模型 数值模拟 碳纤维织物 

分 类 号：TS101.3[轻工技术与工程—纺织工程]