铜合金分火器表面新型耐高温涂层研究
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摘要
针对铜合金分火器表面长期处于高温状态下,基体表面防护涂层易发生剥落的现象,进行耐高温防护涂层的研究。使用甲基三甲基硅氧烷(MTMS)、硅溶胶为主要成膜剂,通过电导率变化研究涂料的水解程度。涂层材料喷涂在铜基体表面,经过烧结形成涂层,其耐热震性能主要与基体表面毛化程度(喷砂粒径)、涂层厚度、烧结温度和烧结时间有关。实验结果表明,铜合金表面经10~30目砂毛化处理,涂层厚度控制在20~30μm,烧结时间在10 min,烧结温度在200℃时,获得的涂层耐热震性能最好,在500℃下的水冷热震次数达32次。
A new type of high temperature resistant coating with methyltrimethoxysilane(MTMS)and silica solution as main film former, and with appropriate pigments was applied on Cu-alloy, which is used for distributor of gas cooker or gas water heater. The results show that the resistance to thermal shock of the coating is mainly related to the surface roughness of the substrate(grit diameter), the coating thickness as well as the temperature and time of the coating sintering process; an optimal coating with high resistance to thermal shock can be obtained when the surface of copper alloy was sandblasted with 10 to 30 mesh sand, the thickness of coating is between 20~30 μm and the coating sintering is conducted at 200 ℃ for 10 min, which can withstand up to 32 cycles thermal shock between heating to500 ℃ and water cooling.
A new type of high temperature resistant coating with methyltrimethoxysilane(MTMS)and silica solution as main film former, and with appropriate pigments was applied on Cu-alloy, which is used for distributor of gas cooker or gas water heater. The results show that the resistance to thermal shock of the coating is mainly related to the surface roughness of the substrate(grit diameter), the coating thickness as well as the temperature and time of the coating sintering process; an optimal coating with high resistance to thermal shock can be obtained when the surface of copper alloy was sandblasted with 10 to 30 mesh sand, the thickness of coating is between 20~30 μm and the coating sintering is conducted at 200 ℃ for 10 min, which can withstand up to 32 cycles thermal shock between heating to500 ℃ and water cooling.
引文
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[3]Zeng S,Song Y H,Zheng Q,et al.Novel silane coupler containing sulfur and nitrogen element[P].Chin Pat,1970563,2007
[4]Guo Z B,Liu J M,Fan H L,et al.Effects of silane coupling agent on high temperature resistance of epoxy modified silicone resin[J].Chem.Mater.Construct.,2006,22(6):28(郭中宝,刘杰民,范慧俐等.硅烷偶联剂对环氧改性有机硅树脂耐高温性能的影响[J].化学建材,2006,22(6):28)
[5]Xie Z B.Study of the protective properties of methyl-trimethoxysilicane on historic sandstone[J].Sci.Conserv.Archaeol,2008,20(4):10)(谢振斌.甲基三甲氧基硅烷对砂岩石刻封护性能的实验室研究[J].文物保护与考古科学,2008,20(4):10)
[6]Jiang L.Nanostructured materials with super hydrophobic surfacefrom nature to biomimesis[J].Chem.Ind.Eng.Prog.,2003,22:1258
[7]Zhai L F,Lu D P,Fan N N,et al.Facile fabrication and modification of polyacrylate/silica nanocomposite latexes prepared by silica sol and silane coupling agent[J].J.Coat.Technol.Res.,2013,10:799
[8]Liu Z X,Lu X.Preparation of n-propyltrimethoxysilane modified methylsilicone coating[J].Paint Coat.Ind.,2012,42(11):22(刘子珣,卢珣.丙基三甲氧基硅烷改性甲基硅树脂涂料的制备[J].涂料工业,2012,42(11):22)
[9]Zhang B.Preparation and study of high-temperature-resistance silicone resin and printing ink[D].Dalian:Dalian Jiaotong University,2011(张炳.耐高温有机硅树脂及油墨的制备与研究[D].大连:大连交通大学,2011)
[10]Zhang F J,Pi Q,Xing W P,et al.Factors influencing adhesion of powder coating for truck box[J].Electropl.Finish.,2016,35:310(张富家,皮沁,邢汶平等.影响汽车车厢粉末涂层附着力的因素[J].电镀与涂饰,2016,35:310)
[11]Wang H W,Mu X L,Liu C C.Effect of substrate surface state on adhesion of silane epoxy hybrid resin coating/2024 aluminium alloy[J].Equip.Environ.Eng.,2016,13(1):14(王浩伟,慕仙莲,刘成臣.基体表面状态对硅烷环氧杂化树脂涂层/2024铝合金间附着力影响[J].装备环境工程,2016,13(1):14)
[12]Xu J.Coating adhesion test method comparison and discussion of influence factors[J].Mod.Paint Finish.,2012,15(10):18(许君.涂层附着力测试方法比较及影响因素探讨[J].现代涂料与涂装,2012,15(10):18)
[13]Qi Z H,Liu Q.Study on application of nano ceramic coatings[J].Coat.Technol.Abstr.,2011,(10):29(齐中华,刘谦.纳米陶瓷涂料的应用研究[J].涂料技术与文摘,2011,(10):29)
[14]Li Q L,Li M,Lei B,et al.Optimization of feedwell design in red mud thickener based on orthogonal experiment[J].Chin.J.Nonfer.Met.,2014,24:1063(李秋龙,李茂,雷波等.基于正交试验的赤泥沉降槽中心桶结构优化[J].中国有色金属学报,2014,24:1063)