摘要
为了制备综合性能优良的铜系复合导电涂料,以自制的配合剂A处理后的铜粉为原料,研究了固化剂类型、铜粉用量及性能、涂料制备工艺等对铜-环氧复合导电涂料性能的影响。结果表明,配方中加入防氧化剂可以有效抑制铜粉在涂层制备过程中的氧化现象。较优的涂料配方(质量比)为:E-51环氧树酯50份,聚酰胺50份,400目铜粉300份,钛酸酯偶联剂2~3份,防氧化剂20~40份,有机膨润土防沉剂2~3份。制得的复合导电涂层具有较好的综合性能,涂层平均表面电阻率约为2.0×10-2Ω/cm2且可保持30 d无变化。
The copper powders pretreated using complexant A were used as the raw material to prepare copper-based highly electric conductive composite coating.The effects of curing agent,the content and performance of the copper powders,and the processing technics on the performance of the copper-epoxy conductive composite coating were investigated.It was found that the introduction of antioxidants contributed to effectively prevent the copper powders from oxidation during the formation of the conductive coating.The optimized formulation for the conductive composite coating was suggested to be composed of E51 epoxy resin 50(mass),polyamide 50,copper powders(400 mesh)300,titanate coupling agent 2~3,antioxidant 20~40,and sedimentation-inhibiting agent 2~3.Moreover,the target copper-epoxy conductive composite coating had good comprehensive properties.Namely,it had an average surface resistivity of 2.0×10^(2) Ω/cm^(2) and the appearance and resistivity kept almost unchanged after being stored in atmosphere for 30 days.
出处
《材料保护》
CAS
CSCD
北大核心
2005年第12期58-61,共4页
Materials Protection
关键词
导电涂料
铜粉
环氧树脂
导电性
conductive composite coating
copper powders
epoxy resin
conductance
