新型无磷洗涤剂助剂层状二硅酸钠特性的比较  

Comparison of properties of layered sodium disilicate

作　　者：杜志刚[1] 徐红[1] 刘雷[1] 邓风[2] 董晋湘[1] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024 [2]中国科学院武汉物理与数学所国家波谱学重点实验室,湖北武汉430071

出　　处：《日用化学工业》2005年第3期153-156,共4页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(20176034)

摘　　要：通过对所合成的无磷洗涤剂助剂层状二硅酸钠(δ相、β相、α相),用XRD、SEM、29SiNMR、钙脱除容量和速率、pH值等方法进行了物理化学特性的比较研究。得到了所合成的样品δ相和α相是纯相;β相样品是以β相为主含δ相的复合相。钙离子脱除特性测定结果表明:3者的钙离子脱除容量分别为336mg/g(以CaCO3计,下同,δ相)、241mg/g(β相)和181mg/g(α相),有较大差异;而且3者的钙离子脱除速率有明显差别,其中以δ相的脱除速率最快。结果还表明:良好的钙离子脱除容量,较快的钙离子脱除速率是δ相层状二硅酸钠具有比较好的洗涤效果的重要原因。<Abstrcat> The physical and chemical properties of δ-,β- and α-layered sodium disilicates were studied by means of XRD,SEM,^(29)SiNMR,the binding rate and capacity of Ca^(2+) ion,as well as pH value.The data of XRD and^(29)SiNMR show that the synthesized δ-and α-layered sodium disilicates are composed of pure δ and α phase respectively,while β-(layered) sodium disilicate is not pure phase but a mixture with β phase as the major containing a little amount of δ phase.The pH value of δ-,β- and α-layered sodium disilicates are similar.The Ca^(2+) ion binding capacity of δ-,β- and α-layered sodium disilicates are 336 mg/g,241 mg/g and 181 mg/g(calculated as CaCO_3),respectively.Their Ca^(2+) ion binding rates are not the same.δ-layered sodium disilicate has the fastest Ca^(2+) ion binding rate in the three materials.High Ca^(2+) ion binding capacity and fast binding rate may be one of the important reasons that δ-layered sodium disilicate has better detergency effect.

关 键 词：洗涤剂助剂 层状二硅酸钠 表征 特性 

分 类 号：TQ649.4[化学工程—精细化工]