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Preparation of ground calcium carbonate-based TiO2 pigment by a two-step coating method
Chen, Yanru1; Yu, Haijun2; Yi, Lingyun3; Liu, Yue1,4; Cao, Lei1,5; Cao, Run1; Liu, Yahui1; Zhao, Wei1; Qi, Tao1
AbstractA two-step coating method for preparing ground calcium carbonate-based TiO2 pigment (GOD) was proposed and studied in this paper. The tetraethoxysilane (TEOS, C8H20O4Si) was selected as Si source. Aqueous ammonia was used as precipitant in the first coating step while titanyl sulfate (TiOSO4 center dot 2H(2)O) was used as Ti source in the second step. The Energy dispersive spectrometer (EDS) and X-ray fluorescence (XRF) results prove that SiO2 is coated on the surface of ground calcium carbonate (GCC) particles successfully. The X-ray diffraction (XRD) and transmission electron microscopy (TEM) results demonstrate that the coated SiO2 is in the form of amorphous. The EDS, XRD, TEM and Scanning electron microscope (SEM) results show that TiO2 is coated on the surface of SiO2 coated GCC (SiO2@GCC) and TiO2 particles are composed of mixed crystal of anatase and rutile. The hiding power of obtained GOD is significantly improved compared with ordinary composite TiO2 pigment (LID) and close to that of anatase TiO2 (ATD). The whiteness and lightness of this GOD are just slightly decreased compared to that of CTD and ATD. Nevertheless, its oil absorption-value is some higher than that of ATD but lower than that of CTD. (C) 2017 Elsevier B.V. All rights reserved.
KeywordGround Calcium Carbonate Tio2 Pigment
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Technologies RD Program(2014BAC03B01) ; Special Fund of Insoluble Potassium Containing Rock of Tongren City(201680) ; National Science Foundation for Youth Scholars of China(51504230 ; Yunnan Province(2016IB002) ; CAS/universities(2016IB002) ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences(QYZDJ-SSW-JSC021) ; co-operation project of Innovation Center of ecological building materials and environmental protection equipment of Jiangsu Province(YCXT201610) ; Key Research and Development Program of Jiangxi Province(20161BBH80003) ; 21606241 ; 51402303)
WOS IDWOS:000425476700059
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Hunan BRUNP Recycling Technol Co LTD, 18 Jinsha EastRd, Changsha 410600, Hunan, Peoples R China
3.Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
4.Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China
5.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Chen, Yanru,Yu, Haijun,Yi, Lingyun,et al. Preparation of ground calcium carbonate-based TiO2 pigment by a two-step coating method[J]. POWDER TECHNOLOGY,2018,325:568-575.
APA Chen, Yanru.,Yu, Haijun.,Yi, Lingyun.,Liu, Yue.,Cao, Lei.,...&Qi, Tao.(2018).Preparation of ground calcium carbonate-based TiO2 pigment by a two-step coating method.POWDER TECHNOLOGY,325,568-575.
MLA Chen, Yanru,et al."Preparation of ground calcium carbonate-based TiO2 pigment by a two-step coating method".POWDER TECHNOLOGY 325(2018):568-575.
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