聚合物表面滴状冷凝传热寿命的实验研究  

LIFETIME OF DROPWISE CONDENSATION ON THE POLYMER COATED SURFACES

作　　者：马学虎[1] 王补宣[1] 徐敦颀[2] 林纪方[2] 

机构地区：[1]清华大学热能系,北京100084 [2]大连理工大学化工系,大连116012

出　　处：《工程热物理学报》1997年第2期196-200,共5页Journal of Engineering Thermophysics

摘　　要：在滴状冷凝传热寿命测试装置上，对采用离子束动态混合注入（DIMI）技术制备的聚四氟乙烯（PTFE）表面的商状冷凝传热寿命进行了间歇实验测试。满状冷凝已维持约500h（间歇操作总时间为1，000h），实验现象及传热性能趋于基本稳定。同时表明聚合物与金属基体具有较强的结合力。In the present paper, a special lifetime testing apparatu is installed for the dropwise con-densation heat transfer on the polymer coated surfaces. The film and dropwise condensationsare simultaneously carried out at the same condensing chamber to get rid of any contain-ments. The discontineous experimental results demonstrate that one surface has maintaineddropwise condensation for about 1,000 hours. The condensation heat trasnfer characteris-tics are tending towards stability. In addition, the experiments prove that the polymer filmprepaxed by the dynamic ion-beam mixed implantation (DIMI) method has good adhesionwith the metal substrate.

关 键 词：滴状冷凝 传热 寿命 聚合物 聚四氟乙烯 

分 类 号：TK124[动力工程及工程热物理—工程热物理]