CAJ | 학술논문

以CuSO4溶液为原料，采用NaOH沉淀-葡萄糖预还原-水合肼还原工艺（简称两步液相还原法）制得了粒度均匀可控、分散性好、适用于陶瓷电容器电极的球形超细铜粉。实验研究了葡萄糖预还原、水合肼的添加方式以及添加剂聚乙烯吡咯烷酮(PVP)和NH4Cl对超细铜粉粒度和形貌的影响。结果表明，葡萄糖预还原和水合肼的分步添加均有利于超细铜粒子的均匀生长，适量PVP的加入有助于超细铜粉粒径均匀并使其形貌趋于一致，NH4Cl可使铜粉的粒径变小，当Cu与NH4Cl的摩尔比为1∶1时铜粉的形貌会由类球形向正多面体转变。
이CuSO4용액위원료，채용NaOH침정-포도당예환원-수합정환원공예（간칭량보액상환원법）제득료립도균균가공、분산성호、괄용우도자전용기전겁적구형초세동분。실험연구료포도당예환원、수합정적첨가방식이급첨가제취을희필각완동(PVP)화NH4Cl대초세동분립도화형모적영향。결과표명，포도당예환원화수합정적분보첨가균유리우초세동입자적균균생장，괄량PVP적가입유조우초세동분립경균균병사기형모추우일치，NH4Cl가사동분적립경변소，당Cu여NH4Cl적마이비위1∶1시동분적형모회유류구형향정다면체전변。
The ultrafine copper powder was prepared by NaOH precipitation-glucose pre-reduction and hydrate hydrazine reduction process with CuSO4 as material. The superfine copper powder was spheroid, uniform and well-dispersed, which could be used for electrode. The effect of glucose pre-reduction, hydrate hydrazine reduction process and additive agents of PVP and NH4Cl on copper powder was studied. The result showed that glucose pre-reduction and adding hydrate hydrazine twice could make copper particles equably grow; PVP was benefit to the uniformity and sphericity of copper powder; the molar ratio n(Cu)∶n(NH4Cl) had remarkable influence on the particle size and shape. With the increasing of NH4Cl, the copper particles become smaller, and when the molar ratio of n(Cu)∶n(NH4Cl) was 1∶1, the copper particles turned spheroid to polyhedron.