Using alkaline electroless copper plating solution of sodium hypophosphite instead of conventional formaldehyde ( HCHO) as the reducing agent and nickel sulfate as re-activation agent, Cu-Ni alloy coating has been acquired. 采用次亚磷酸钠取代传统的甲醛为还原剂,硫酸镍为再活化剂的碱性化学镀铜,获得了铜-镍合金镀层;
A study on a modified alkaline pulp black liquor as viscosity reducing agent for polymer drilling mud 改性碱法制浆废液降低聚合物泥浆粘度的室内研究
Results are as follows: ( 1) In a heated alkaline solution, the silver/ chitosan nanoparticle with small particle size was obtained by reducing silver nitrate with chitosan under optimized reaction conditions, in which chitosan was used as both the reducing and stabilizing agent. 研究结果如下:(1)将壳聚糖既作为还原剂又作为稳定剂,在碱性加热条件下,还原硝酸银得到银/壳聚糖复合物。通过反应条件的优化,获得粒径相对较小的产物。
Secondly, the writer took the corn starch under a certain alkaline as the raw material of the modification to prepare the OES water reducing agent with great dispersing ability through the same modification process. 以一定酸解条件下的玉米淀粉为改性原料,采用相同的改性工艺也制备出了具有良好分散能力的OES减水剂。