发明名称 |
METHOD FOR PRODUCTION OF COPPER ULTRAFINE POWDER AND METHOD FOR PRODUCTION OF CONDUCTIVE COMPOSITIONS BASED ON COPPER ULTRAFINE POWDER |
摘要 |
FIELD: powdery metallurgy of nonferrous metals. SUBSTANCE: method includes mixing of pentahydrate of copper sulfate with water-glycerin mixture in which water amounts to 2.5-5.0% of mixture volume; heating holding up to complete dissolving of components; subsequent elevation temperature and reduction to ultrafine copper with addition of catalytic quantities of organic acid; separation of copper ultrafine powder; washing with alcohol or aqueous solution of hydroquinone; treatment with alcohol or pentane solution of stearic acid; drying and storage. The method for production of conductive compositions based on copper ultrafine powder is realized by mixing of copper ultrafine powder with soluble phenol-formaldehyde resin or organic binder and with I-naphthol, ascorbic or formic acid or with mixture of glycerin with I-naphthol as stabilizer with the following amount of components, wt.%: ultrafine copper:resin:stabilizer = 100:25:(1-5). EFFECT: higher resistance to oxidation of copper ultrafine powder, simplified method of production, and also reduced specific resistance of compositions based on copper ultrafine powder with soluble phenol-formaldehyde resin and promoted further stabilization of compositions in time. 11 cl, 3 tblu
|
申请公布号 |
RU2115516(C1) |
申请公布日期 |
1998.07.20 |
申请号 |
RU19970109435 |
申请日期 |
1997.06.04 |
申请人 |
INSTITUT KHIMII UGLERODNYKH MATERIALOV SO RAN |
发明人 |
OBRAZTSOVA I.I.;SIMENJUK G.JU.;EREMENKO N.K. |
分类号 |
B22F9/30;(IPC1-7):B22F9/30 |
主分类号 |
B22F9/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|