莫来石包裹Na^(+)掺杂型γ-Ce_(2)S_(3)大红色料  

Na^(+)-Dopedγ-Ce_(2)S_(3)Bright Red Pigment Coated with Mullite

作　　者：任德威 李月明 王竹梅 李恺 孙熠 宋福生 REN Dewei;LI Yueming;WANG Zhumei;LI Kai;SUN Yi;SONG Fusheng(School of Materials Science and Engineering,Jingdezhen Ceramic University;China National Light Industry Key Laboratory of Functional Ceramic Materials;Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province,Jingdezhen 333403,Jiangxi,China)

机构地区：[1]景德镇陶瓷大学材料科学与工程学院 [2]中国轻工业功能陶瓷材料重点实验室 [3]江西省能量存储与转换陶瓷材料工程实验室,江西景德镇333403

出　　处：《硅酸盐学报》2022年第9期2455-2462,共8页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51462010);江西省自然科学基金(20171ACB20022,20161BAB206132,20202BABL204015)。

摘　　要：γ-Ce_(2)S_(3)是一种无毒环保型大红无机色料,色泽鲜艳、遮盖力强、具有优异的抗紫外能力,但其抗氧化温度为350℃。为提升γ-Ce_(2)S_(3)大红色料的抗氧化温度,采用溶胶–凝胶法结合硫化升温工艺,合成了莫来石包裹的Na^(+)掺杂型γ-Ce_(2)S_(3)大红色料(记为γ-[Na]-Ce_(2)S_(3)@mullite),研究了莫来石的合成条件、不同预烧温度对包裹色料前驱体形貌以及色度的影响,并分析了包裹色料的温度稳定性。结果表明:当烧结温度为1300℃保温3 h、n(Al):n(Si)=3.2:2.0(n为摩尔)时,可合成短棒状和类球状的莫来石晶体;当预烧温度为400℃,可获得最佳色度值的包裹色料:L^(*)=36.24、a^(*)=41.86、b^(*)=36.26,该色料在空气气氛下800℃保温10 min仍具有良好的色度值:L^(*)=29.84、a^(*)=20.83、b^(*)=18.17,表明γ-[Na]-Ce_(2)S_(3)@mullite可使γ-Ce_(2)S_(3)的温度稳定性从350℃提升至800℃。γ-Ce_(2)S_(3)is a kind of non-toxic environmental protection red inorganic pigment due to its bright color,intense hiding power and superior ultraviolet resistance.However,its antioxidant temperature is 350℃.To improve the oxidation resistance temperature ofγ-Ce_(2)S_(3),a mullite coated Na^(+)ion-dopedγ-Ce_(2)S_(3)(i.e.,γ-[Na]-Ce_(2)S_(3)@mullite)was synthesized by a sol-gel method and a subsequent sulfuration-heating process.The synthetic conditions of mullite as well as the effect of pre-firing temperature on the morphology of precursor and chromaticity value of the coated pigments were investigated,and the thermal stability of the coated pigments was also analyzed.The results show that short rod-like and spheroidal mullite crystals can be synthesized at 1300℃for 3 h as nAl:nSi=3.2:2.0,and the optimum chromaticity value(i.e.,L^(*)=36.24,a^(*)=41.86,b^(*)=36.26)of the coated pigment can be obtained when the pre-firing temperature is 400℃.The pigment has a good chromaticity value(i.e.,L^(*)=29.84,a^(*)=20.83,b^(*)=18.17)when being in air at 800℃for 10 min.This study indicates thatγ-[Na]-Ce_(2)S_(3)@mullite can increase the antioxidant temperature ofγ-Ce_(2)S_(3)from 350℃to 800℃.

关 键 词：伽马硫化铈 溶胶–凝胶法 莫来石包裹色料 

分 类 号：TQ174.45[化学工程—陶瓷工业]