The epoxy silicone resin was modified using zinc powder as heat conducting filler. Effect of zinc powder mass fraction on the thermal conductivity of modified epoxy organosilicon dry film coating was researched and the effect of coating thickness on the thermal conductivity of carbon steel was analyzed. The results showed that The thermal conductivity of silicone coating is around 0.19 W/(m?K), and heat-resistant temperature is above 200℃. Thus, the coating can ensure the long-term coating work in the low temperature flue gas waste heat recovery heat exchanger surface without any thermal reaction. Addition of zinc powder can improve the thermal conductivity of modified epoxy organosilicon coating. As the zinc powder content is 25wt%, the thermal conductivity of the coating material can increase 84% to 0.35 W/(m?K). Generally, with the increase of coating thickness, the thermal conductivity of metal matrix composite silicone coating decreases. The thermal conductivity of uncoated carbon steel was 47.59 W/(m?K), and the thermal conductivity of the coated carbon steel decreased to 34.33 W/(m?K) when the coating thickness was 200 μm.
Ganqiang WANG Jingfu WANG Xinxin ZHANG Tao ZHANG
. Thermal conductivity property of metal based silicone resin coating composite[J]. The Chinese Journal of Process Engineering, 2018
, 18(4)
: 785
-791
.
DOI: 10.12034/j.issn.1009-606X.217341
[1]车得福, 庄正宁, 李军, 等.锅炉[M]. 西安: 西安交通大学出版社, 2010. 52—53.
[2]郑永新, 赵恒谊, 叶远璋, 等.冷凝式燃气热水器换热器低温段防腐试验研究[J].煤气与热力, 2006, 27(7):35-41
[3]李旭日, 李瑞生.锌粉对环氧树脂防腐涂层改性的研究[J].辽宁化工, 2017, 41(9):882-884
[4]刘广娟，左禹，赵景茂.环氧改性有机硅涂料耐热耐蚀性研究[J].腐蚀与防腐, 2004, 25(6):238-241
[5]Mathivanan L, Radhakrishna S.Heat-resistant anti-corrosive paint from epoxy-silicone vehicles[J].Anti-Corrosion Methods and Materials, 1997, 44(6):400-406
[6]赵惠斌.环氧改性有机硅树脂--防腐涂料的最佳解决方案[J].上海涂料, 2013, 51(4):53-55
[7]余锡宾, 王华林.丙烯酸树脂与聚硅氧烷接枝改性的研究[J].高分子材料科学与工程, 1998, 14(2):129-131
[8]wanxun He, wenkang Shi, ping Cai, Ailun Ye.Applications of acrylate-based polymer and silicone resin on LPFG-based devices[J].Optical Materials, 2003, 21(2):507-510
[9]Hamid Javaherian Naghash, Shadpour Mallakpour, Neda Kayhan.Synthesis and characterization of silicone modified acrylic resin and its uses in the emulsion paints[J].Iranian Polymer, 2005, 14(3):211-222
[10]LI Jing, LIANG Ju, LIU Yeming.High-Thermal Conductive Coating Used on Metal Heat Exchanger[J].Chinese Journal of Chemical Engineering, 2014, 22(5):596-601
[11]陈跃, 冯显富, 黄鑫.广东石化换热器有机涂层防腐技术应用策略[J].全面腐蚀控制, 2013, 27(12):40-43
[12]余存烨.对石化换热器涂镀层厚度过薄的质疑[J].全面腐蚀控制, 2010, 1(3):22-24
[13]董黎明.冷凝式锅炉热平衡计算方式初探[J].工业锅炉, 2010, 1(04):15-16
[14]王哲 王景甫 郭莲莲.烧结矿等效导热系数实验测量及分析[J].过程工程学报, 2017, 17(4):879-882
[15]陈瑞芳, 丁道宁, 穆颖, 等.差示扫描量热法测定锌粉和富锌底漆中的锌含量[J].上海涂料, 2010, 48(9):43-45
[16]ASTM D6580-2000( 2009 ). 锌粉颜料及富锌漆干膜中金属锌含量测定的标准方法
[17]Davia L C, Artz B E.thermal conductivity of metal matrix composites[J].Journal of Applied Physics, 1995, 77(10):4954-4960
[18]贾思洋, 杨万国, 张波.涂层厚度对传热系数的影响研究[J].现代涂料与涂装, 2011, 14(1):25-27
