多硅酸钠的助洗性能研究  

Study on the Proporty of Sodium Polysilicate as Detergent Builder

作　　者：侯坤章[1] 姚兴芝[1] 王西新[1] 王宏伟[1] 

机构地区：[1]南阳师范学院化学系,河南南阳473061

出　　处：《南阳师范学院学报》2004年第12期44-45,50,共3页Journal of Nanyang Normal University

摘　　要：用硅酸钠与硅酸水凝胶反应,制备不同组成的多硅酸钠(Na2O·nSiO2,n=1～8)。研究表明,随n值增大,多硅酸钠的溶解性,碱性和结合Ca2+、Mg2+的量降低,而缓冲性能提高,n≥5时,溶解性较差;不同多硅酸钠对涤纶布的去污性能影响不大;对于棉布,随n值增大去污值增大。综合性能以四硅酸钠为最优。A series of sodium polysilicates was synthesized from sodium silicate and water_gel of silicic acid (Na_2O·nSiO_2,n=1～8).Testing show that as the n value increases,the alkalinity,solubility of sodium polysilicate and the amount of combined Ca^(2+),Mg^(2+) are reduced,but its buffer property rises and when n≥5,the solubility is lower,Different sodium polvsilicates have little effect on the decontamination of Dacron cloth,but as to cotton cloth,the decontamination ratio becomes greater as the n value rises.The decombination property of sodium tetrasilicate is best.

关 键 词：多硅酸钠 助洗剂 缓冲性能 

分 类 号：O613.72[理学—无机化学]