陶瓷浆料用木质素系分散剂的性能及配伍研究  

Study on the Performance and Compatibility of Lignin-based Dispersant for Ceramic Slurry

作　　者：郭素芳[1] 庞煜霞[1] 邓永红[1] 邱学青[1] 

机构地区：[1]华南理工大学化学与化工学院广东省绿色化学产品技术重点实验室,广东广州510640

出　　处：《精细化工》2011年第6期594-598,共5页Fine Chemicals

基　　金：国家杰出青年科学基金(20925622);广东省自然科学基金(8351064101000002)~~

摘　　要：考察了改性木质素磺酸钠GCL3S系列产品对墙地砖陶瓷浆料应用性能的影响,结果表明,GCL3S具有较好的分散稳定性能。当低相对分子质量(以下简称分子量)的GCL3S-1掺量(分散剂占陶瓷粉料的质量分数,下同)为0.3%时,固含量(固体占陶瓷浆体的质量分数,下同)为71.26%的陶瓷浆料流出时间仅为41.79 s,厚化度为1.37;随GCL3S分子量增加,陶瓷浆料性能先提高后降低,重均分子量Mw=27 700的GCL3S-2对浆料的流动性及分散稳定性能最好。GCL3S产品与水玻璃、六偏磷酸钠、焦磷酸钠、三聚磷酸钠复配能进一步提高其应用性能,其中与六偏磷酸钠按质量比1∶1复配,总掺量为0.2%时,陶瓷浆料流出时间仅38.81 s,分散性能明显优于目前常用的无机盐分散剂。The application performance of ceramic slurry blended with modified sodium lignosulfonate GCL3S was studied.The results show that GCL3S could significantly improve the dispersion and stabilization performance of the ceramic slurry.When the addition amount of GCL3S-1 is 0.3%,with the outflow time of 41.79 s and the thickening degree of 1.37,the mass fraction of ceramic slurry could reach 71.26%.The increase of the molecular weight of GCL3S first improved the performance of ceramic slurry and then decreased it.GCL3S-2 with Mw of about 27 700 had the best dispersion and stabilization performance on the ceramic slurry.When incorporated with sodium silicate,sodium hexametaphosphate,sodium pyrophosphate and sodium tripolyphosphate respectively,GCL3S-1 could further improve the dispersion performance of ceramic slurry.The outflow time of ceramic slurry was only 38.81 s when the mass ratio of GCL3S-1 to sodium hexametaphosphate was 1∶ 1 and the total addition amount was 0.2%,which indicates that the dispersion performance of this composite dispersant was significantly better than that of common inorganic dispersants.

关 键 词：改性木质素磺酸钠 陶瓷浆料 分散剂 复配 建筑用化学品 

分 类 号：TQ174.4[化学工程—陶瓷工业]