摘要
采用溶胶-凝胶法制备ZrO2-SiO2混合溶胶,以碳素为炭黑来源,混合溶胶经快速凝胶化后得到初始粉体,经还原气氛煅烧后,得到ZrSiO4包裹炭黑色料。采用XRD、TEM,TG/DTA等手段测试所得粉体,实验结果显示,1150℃,还原气氛煅烧,Zr(OH)4-Si(OH)4混合凝胶能够转化为ZrSiO4,TG/DTA结果显示煅烧后的ZrSiO4包裹炭黑色料在氧化气氛下煅烧,质量损失只有3%,煅烧后的色料依然保持黑色,说明ZrSiO4能够实现对炭黑的包裹,包裹率较高。TEM照片显示多个炭黑颗粒嵌入致密的ZrSiO4颗粒中,这与Zr(OH)4-Si(OH)4混合溶胶的凝胶过程有关。
ZrO2-SiO2 composite sol obtained by sol-gel process was fast gelatinized into the starting powder,using carbon as the source of carbon black.After calcining the powder in the reduction atmosphere,the ZrSiO4 encapsulated carbon black pigment was prepared.The as-prepared pigment was then characterized by XRD,TEM,TG/DTA,etc.Results show：the Z r（OH）4-S i（OH）4 composite sol can be converted into ZrSiO4 when calcined in reduction atmosphere at 1150℃; the encapsulated pigment has only 3％ loss on ignition after being fired in oxidation atmosphere and well retains the color of black,which indicates ZrSiO4 has effected efficient encapsulation of the carbon black; and a number of carbon black grains are incorporated into dense ZrSiO4 particles due to the gelatinization of Zr（OH）4-Si（OH）4 composite sol.
出处
《陶瓷学报》
CAS
北大核心
2013年第4期421-424,共4页
Journal of Ceramics
基金
国家自然科学基金项目(编号:51062006)
关键词
陶瓷色料
黑色色料
包裹炭黑
硅酸锆
ceramic pigment
black pigment
encapsulated black
zirconium silicate
