三元共聚法包覆片状铜锌合金粉.pdfVIP

学兔兔 第27卷第4期 粉末冶金技术 Vo1．27，No．4 2009年 8月 Powder Metallurgy Technology Aug．2009 三元共聚法包覆片状铜锌合金粉 李 霞 叶红齐 黄慧丽 (中南大学 化学化工学院，长沙 410083) 摘 要： 以丙烯酸、苯乙烯、三羟甲基丙烷三甲基丙烯酸酯为单体，偶氮二异丁腈为引发剂，通过共聚反应在 片状铜锌合金粉表面包覆一层致密的带有苯环和羧基的共聚物膜，并对共聚反应温度和时间对包覆铜锌合 金粉耐酸性能的影响进行系统研究。试验结果表明：在8O℃反应4 h的共聚包覆后的铜锌合金粉耐酸性能 较好。运用光学显微镜、SEM、IR、XRD和TG对包覆样品进行了分析。 关键词：铜锌合金粉；三元共聚；包覆 Study on flaky bronze powder coated by ternary copolymerization Li Xia，Ye Hongqi，Huang Huili (College of Chemistry and Chemical Engineering，Central South University，Changsha 410083，China) Abstract：The flaky bronze powder coated with a polymer membrane was investigated through cop0lymerization，which used acrylic acid，styrene and trimethylolpr。pane trimethaerylate as monomers and 2，2 ·Azo—bis—isobutyronitrile as initiator．The effect of the condition of c。p0lymerizati0n reaction，including the reaction temperature and reaction time on the corrasion resistance of the coated bronze powder was also systemically considered．The result shows that：the acid resistance of bronze powder is improved obviously after coating；the sample coated for 4 hours at the temperature of 8O℃ has good acid resistance．Moreover，the encapsulated samples were analyzed by optical microscopy，SEM， IR，XRD and TG． Key words： bronze powder；ternary c。p0lymerizati0n；coating 铜锌合金粉，俗称铜金粉，它是一种以铜、锌为 级或纳米级薄膜，形成微胶囊结构，其表面所形成的 主要原料，经过特殊加工和表面化学处理制成的鳞 壳层对铜锌合金粉能起到屏蔽作用，提高其耐腐蚀 片状合金粉末，广泛应用于包装印刷行业” 。目 性能，并且可以改变铜锌合金粉的表面电荷性质、功 前，该行业普遍使用的油墨以苯、乙醚等有毒的有机 能