Effect of rare earth oxides on the properties of bio-soluble alkaline earth silicate fibers  

作　　者：王玺堂 刘浩 王周福 马妍 Girish M.Kale 

机构地区：[1]The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology [2]Institute for Materials Research, School of Process, Environmental and Materials Engineering, University of Leeds

出　　处：《Journal of Rare Earths》2016年第2期203-207,共5页稀土学报（英文版）

基　　金：supported by the National Basic Research Program of China(973 Program)(2014CB660802);the National Natural Science Foundation of China(51474166);Natural Science Foundation of Hubei Province(2012FFA102)

摘　　要：Using natural mineral wollastonite, talc and quartz sands as raw materials, rare earth oxides (La2O3, Nd2O3 and Y2O3) as additives, the bio-soluble alkaline earth silicate fibers were prepared by melting and blowing process. The viscosity of the molten ma-terials, bio-solubility and crystallization behavior of the fiber were investigated. The results indicated that the fiber drawing tempera-ture range could be broadened since the slope of the temperature-viscosity curve decreased with adding rare earth oxide. The addition of rare earth oxide was beneficial to the increase of crystallization temperature by strengthening the network structure of the fiber. The existence of rare earth oxide in the fibers would reduce the solubility of the fibers, which still belonged to bio-soluble fibers.Using natural mineral wollastonite, talc and quartz sands as raw materials, rare earth oxides (La2O3, Nd2O3 and Y2O3) as additives, the bio-soluble alkaline earth silicate fibers were prepared by melting and blowing process. The viscosity of the molten ma-terials, bio-solubility and crystallization behavior of the fiber were investigated. The results indicated that the fiber drawing tempera-ture range could be broadened since the slope of the temperature-viscosity curve decreased with adding rare earth oxide. The addition of rare earth oxide was beneficial to the increase of crystallization temperature by strengthening the network structure of the fiber. The existence of rare earth oxide in the fibers would reduce the solubility of the fibers, which still belonged to bio-soluble fibers.

关 键 词：rare earth oxide alkaline earth silicate fibers bio-solubility crystallization behavior 

分 类 号：TQ343[化学工程—化纤工业]