排序方式: 共有27条查询结果,搜索用时 15 毫秒
1.
1IntroductionIn comparison with traditional zinc sulphide light storage and emission materials,rare-earth-activatedlight storage and emission materials are of advantages of higher luminance,longer afterglowti me,safe andnon-toxic and environmentally friendly.They have been widely applied in various transparent mediums,daily consumables,architecture decoration,transportationtools,militaryfacilities andfire emergency sys-temas well as arts and crafts.Rare earth aluminate light storage and emissi… 相似文献
2.
3.
4.
5.
超细四氧化三钴的制备 总被引:4,自引:0,他引:4
对液相控制沉淀制备超细Co3O4的工艺进行了研究,通过控制沉淀剂用量、表面活性剂用量及种类等条件.可制备出分散性能好、球形的Co3O4粉末.平均粒径约50nm.该法工艺简单.容易实现工业化生产. 相似文献
6.
7.
8.
以Acorga M5640为载体的乳状液膜法分离富集铜 总被引:2,自引:0,他引:2
研究了以Acorga M5640为载体的乳状液膜,从低品位铜矿浸出液中提取铜的最优膜配方及工艺条件.结果表明,由Acorga M5640(体积分数6%)、LMS-2 LMA-1(体积分数2%)和民用煤油组成的乳状液膜膜相,在内水相为2~3mol/LH2SO4,外相pH为1.5~4.0,油内比Rd=3:2,乳水比Rew=1:5,提取时间为6min的条件下,铜的迁移率接近100%,二次逆流提取后的富集液中,铜浓度为6.5g/L左右. 相似文献
9.
10.