工业硫酸氧钛制备珠光颜料实验研究
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摘要
以攀枝花某钛白粉厂工业硫酸氧钛浓钛液为原料,经过冷冻除铁处理,用于制备银白色云母钛珠光颜料。考察了原料预处理、溶液pH、沉积量、沉积时间、热处理等因素对珠光颜料珠光效果的影响,找到了制备银白色云母钛珠光颜料的适宜工艺参数。采用热重分析、X射线衍射(XRD)、扫描电镜(SEM)等对云母钛珠光颜料进行了表征。结果表明,利用工业硫酸氧钛浓钛液可以在云母片上沉积一层偏钛酸,经过750～850℃热处理在云母片上包覆了一层纳米级二氧化钛薄膜,X射线衍射分析表明该层包膜是锐钛型纳米二氧化钛,扫描电镜分析表明纳米级二氧化钛粒径约为30 nm。
The silver-white mica titanium pearlescent pigment was prepared by using the industrial concentrated titanium(Ⅳ)oxysulfate solution as raw material through the process of iron removal by freezing in a titanium dioxide plant of Panzhihua.Suitable preparation parameters were obtained by means of investigating the influences of raw material pretreatment,pH,deposition,deposition time and heat treatment etc.on the perlitic effect of pearlescent pigment.The samples were characterized by TG-DTA,XRD and SEM.The results showed that using industrial concentrated titanium liquid could deposit a layer of metatitanic acid on the mica sheet,after 750～850 ℃ heat treatment on the mica sheet covering a layer of nanoscale titanium dioxide thin film.XRD showed that the coated layer was nanometer anatase titanium dioxide,and SEM showed that the particle size of nanoscale titanium dioxide was about 30 nm.
The silver-white mica titanium pearlescent pigment was prepared by using the industrial concentrated titanium(Ⅳ)oxysulfate solution as raw material through the process of iron removal by freezing in a titanium dioxide plant of Panzhihua.Suitable preparation parameters were obtained by means of investigating the influences of raw material pretreatment,pH,deposition,deposition time and heat treatment etc.on the perlitic effect of pearlescent pigment.The samples were characterized by TG-DTA,XRD and SEM.The results showed that using industrial concentrated titanium liquid could deposit a layer of metatitanic acid on the mica sheet,after 750～850 ℃ heat treatment on the mica sheet covering a layer of nanoscale titanium dioxide thin film.XRD showed that the coated layer was nanometer anatase titanium dioxide,and SEM showed that the particle size of nanoscale titanium dioxide was about 30 nm.
引文
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[3]柯永乐.云母钛珠光颜料的表面改性及其在粉末涂料中的应用研究[D].广州:广东工业大学,2016.
[4]李瑞.水性光油中珠光颜料显色性的比较研究[D].郑州:郑州大学,2017.
[5]徐扬群.珠光颜料的制造加工与应用[M].北京:化学工业出版社,2005.
[6]龚先政.云母钛珠光颜料的形成机理研究[J].化工矿物与加工,2002(6):13-16.
[7]譒tengl V,譒ubrt J,Bakardjieva S,et al.The preparation and characteristics of pigments based on mica coated with metal oxides[J].Dyes and Pigments,2003,58(3):239-244.
[8] KalendováA.Surface-treated mica based on muscovite for anticorrosive coatings[J].Pigment&Resin Technology,2002,31(4):216-225.
[9]王斐,刘够生,李冰.锐钛矿型氟金云母钛珠光颜料制备及表征[J].无机盐工业,2015,47(9):42-45.