• Title, Summary, Keyword: inorganic pigment

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Synthesis and Coloration Control of α-FeOOH Rods using Closed System

  • Yu, Ri;Lee, NaRi;Kim, YooJin
    • Journal of the Korean Ceramic Society
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    • v.56 no.3
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    • pp.298-301
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    • 2019
  • This paper details the synthesis of α-FeOOH (goethite) rods through the reaction of iron (III) nitrate with KOH as a strong base, and shape control of the particles for use as a yellow inorganic pigment. The crystal phase of the α-FeOOH crystal with OH content according to the addition of KOH and the change in morphology were investigated. The optical properties varied with the aspect ratios, and the yellowness increased with increasing aspect ratio. However, the enhanced chromaticity characteristics reversed beyond a certain critical aspect ratio. Thus, the relative optimal aspect ratio of the α-FeOOH rods as a vivid yellow inorganic pigment was derived. The morphology and coloration of the prepared rods were investigated in detail using X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis spectroscopy, and CIE Lab color parameter measurements.

Synthesis of new black pigment; Carbon black pigment capsulated into the meso-pore of silica as black pigment in cosmetic

  • Jang, Hye-In;Lee, Kyung-Chul;Park, Jong-Eul;Lyoo, Hee-Chang
    • Proceedings of the SCSK Conference
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    • pp.308-312
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    • 2003
  • Recently the trend of new materials development is extensively and very actively progressing in the study of physical and chemical characteristics developing a totally new material along with the study field of recently discovered material modifying physically and chemically characteristics. Among these fields of studies, one method to improve adaptation of inorganic material is the study of mesoporous materials. The most general way to synthesize mesoporous materials is to mold the very systematical mesopore into a corpuscle by using templates(omitted)

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Preparation and Characteristics of Carmine coated Mica Pearlescent Pigment (카민이 코팅된 마이카 펄 광택안료의 제조 및 특성)

  • Lee, Dong-Kyu;Lee, Jin-Hwa;Park, Seon-Young
    • Journal of the Korean Applied Science and Technology
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    • v.25 no.4
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    • pp.511-517
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    • 2008
  • We make high-functional inorganic-composite pearlescent pigment material that coated with carmine on the plate-type particle such as mica. In this experiment, we synthesized composite powder using pH control precipitation method. We make an experiment with changing as synthesis factors that are concentrations of starting material and precipitation materials. We analyzed pearlescent powder's shape, and crystallization with FE-SEM, XRD, and EDS. Optimum condition for preparation of carmine coated mica pearlescent pigment is pH $4.5{\sim}5.5$.

Studies on the substitution pigment of Dan-Chung (양록단청 대체안료 개발 연구)

  • Kim, Sa-Dug;Kim, Soon-Kwan;Hong, Jung-Ki;Kang, Da-Il;Lee, Myong-Hee
    • 보존과학연구
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    • pp.121-137
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    • 1999
  • Among pigment used at work of Dan-Chung, Emerald Green is specific illuminating fluorescent light of green. It is very difficult to change other organic or inorganic pigment. All of the internal high class pigment has rare light. But Emerald Green is superior to fresh color and stability out of industrial chemical products. It forms over 50% of quantity and importance of a pattern painting. Emerald Green prohibited to produce because of its toxicpollutants, so required to changing pigment development. It is characterized to excellent color, convenient work, economical, against-sunlight, against-air pollutant and durability. The result of a test is follows; 1. We are investigated into producing internal natural Emerald Green, import external pigment and industrial synthesis method etc. but unable to buy because of its toxic pollutant. 2. We are made six samples by yellowish and green is hpigment mixing. We tested on against sunlight and air pollutant. The best mixing ratio is follows. Titanium Dioxide R760 : 18g- Chalk, White Wash : 10g- Permanent Yellow : 7g- Cyanine Green : 8g- Chrome Yellow : 3g- Resin(Vehicle) : Acryl Emulsion(Styrene + 2-Ethyl HexylAcrylate + Methyl Meth Acrylate) 8%

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Development of Environmental-friendly Nontoxic Organic.Inorganic Complex Pigment (환경친화적 무독성 유.무기 복합안료 개발연구)

  • Do, Young-Woong;Hong, Zhao;Ha, Jin-Wook
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.6
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    • pp.1739-1744
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    • 2008
  • Non-toxic orgarnic inorgarnic complex green pigment using Fluidized Bed Vapor Deposition(FB-VD) process was developed to alternate green pigment used heavy metals chrome and lead in present domestic. Kaolin materials and $CaCO_3$ were used as supporter of pigment and surface and compositions of supporters were characterized by SEM and EDXS, respectively. Various kind of surface active agents(surfactants) were also used to optimize the dry condition or color revelation. Results showed that anion type surfactant is most suitable for dry and color revelation of pigment.

A Study on the Decision Factor N of the Tone Density (Tone농도의 Facter N 결정에 관한 연구)

  • 안석출
    • Journal of the Korean Printing Society
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    • v.10 no.1
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    • pp.35-54
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    • 1992
  • Direct electrostatic coating method is simple, low cost and environmentally useful method. We are investigated on the coating of carrier transfer polymer layer on the carrier generate inorganic pigment layer using direct electrostatic coating method. The sample was obtained electrostatic deposite layer by fusing and calendering on the copper phthalocyanine. we could be found several polymer thin film shows good bond properties between film and pigment layer.

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Study on Preparation of Environment-Friendly Special Paper Using Functional Antibiotic Nano-Particle (I) (기능성 항균 나노입자를 이용한 친환경성 특수지 제조에 관한 연구(I))

  • Cho, Jun-Hyung;Lee, Yong-Won;Kim, Hyung-Jin;Lee, Jong-Man
    • Applied Chemistry for Engineering
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    • v.16 no.3
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    • pp.385-390
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    • 2005
  • In this study, nano sized colloidal Ag was made by using a seed sol method. Colloidal Ag solution was spouted on the surface of the inorganic pigment using the hybridizer system and spray nozzle. Then, the surface of the inorganic pigment was modified by $TiO_2$ to obtain the antibacterial ability. In the manufacturing process of nano sized colloidal Ag, it was confirmed that the size of particles increased by addition of $AgNO_3$ and increased the reaction time. The antibacterial measurement of the inorganic pigment showed that the growth of fungus decreased as the reaction time was increased. After the antibacterial ability appeared, in 5~7 h of the antibacterial inoculation experiment, it was measured that the antibacterial activity was excellent at a fixed time frame. The photodecomposition of benzene using $TiO_2$ as the photocatalyst showed 60~70% efficiency in about 80 min. reaction time. It was shown that more than 90% of this efficiency was achieved in the reaction time of about 30 min.

Synthesis and Characterization of NiAl2O4 Inorganic Pigment Nanoparticles by a Reverse Micelle Processing (역-마이셀 공정에 의한 NiAl2O4 무기안료 나노 분말의 합성 및 특성)

  • Son, Jeong-Hun;Bae, Dong-Sik
    • Korean Journal of Materials Research
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    • v.25 no.2
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    • pp.95-99
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    • 2015
  • $NiAl_2O_4$ nanoparticle was synthesized by a reverse micelle processing for inorganic pigment. $Ni(NO_3)_2{\cdot}6H_2O$ and $Al(NO_3)_3{\cdot}9H_2O$ were used for the precursor in order to synthesize $NiAl_2O_4$ nanoparticles. The aqueous solution, which consisted of a mixing molar ratio of Ni/Al, was 1:2 and heat treated at $800{\sim}1100^{\circ}C$ for 2h. The average size and distribution of synthesized $NiAl_2O_4$ powders are in the range of 10-20 nm and narrow, respectively. The average size of the synthesized $NiAl_2O_4$ powders increased with an increasing water-to-surfactant molar ratio and heating temperature. The crystallinity of synthesized $NiAl_2O_4$ powder increased with an increasing heating temperature. The synthesized $NiAl_2O_4$ powders were characterized by X-ray diffraction analysis(XRD), a field emission scanning electron microscopy(FE-SEM), and a color spectrophotometer. The properties of synthesized powders were affected as a function such as a molar ratio and heating temperature. Results indicate that synthesis using a reverse miclle processing is a favorable process to obtain $NiAl_2O_4$ spinels at low temperatures. The procedure performed suggests that this new synthesis route for producing these oxides has the advantage of being fast and simple. Colorimetric coordinates indicate that the pigments obtained exhibit blue colors.

A scientific analysis of pigments for the Ilweoloakdo (일원오악도 안료에 대한 과학적 분석)

  • Han, Min-Su;Hong, Jong-Ouk
    • 보존과학연구
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    • pp.165-188
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    • 2005
  • From the ancient to these days, there have been used many kinds of pigment which have two types that are inorganic pigment and organic pigment. At the ancient times, natural pigment had been used but the artificially mixed pigment has been used in modern times. By the way, searching for studies has been studied recently, it would be said the ancient pigments such as Danchung, Wall painting and Mural painting are the mainthema. However, studies about the pigments used in modern pictured relics have rarely can be found. Therefore, this analysis of Ilweolokdo would be important at the point of the pigments used in pictures of royal family in modern times and the results can be briefly summarized as below; Firstly, the results of qualitative analysis of the pigments that base or all pigments of picture was detected components of Ca, Fe and As, this results meaning that picture was used filler and basic paint. Secondly, a result of the analysis on the composition elements of the pigments shows that the main components in their composition are ;White - Lead Cyanamide($2PbCO_3$.$Pb(OH)_2$) or Titanium Oxide($TiO_2$)Blue - Ultramarine($2(Na_2O$.$Al_2O_3$ .$2Si_O2$).$Na_2S_2$)Green - Emerald green($C_2H_3A_s3Cu_2O_8$)Gold - Gold(Au), Red-Red Lead($Pb_3O_4$) or Cinnabar(HgS)Black - Carbon(C)Thirdly, X-ray diffraction analysis of crystalline structure for the blue and green pigment peeling off in picture shows that the components of blue pigment is Ultramarine($2(Na_2O$.$Al_2O_3$ .$2Si_O2$).$Na_2S_2$) and green pigment is Emerald green($C_2H_3A_s3Cu_2O_8$). Especially, microcrystalline structure of the green pigment was the shape like a cross section of wood. Consequently, we knew through the analysis of qualitative and microcrystallinestructures seen on the cross section of analyzed pigments layer that the all pigments used in the Ilweoloakdo is possible to use synthetic pigments in modern.

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Studies on the Storage Stability of Jindo Hongju Pigment (진도홍주색소의 저장안정성에 관한 연구)

  • Kim, Seon-Jae;Park, Keun-Hyung
    • Korean Journal of Food Science and Technology
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    • v.24 no.2
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    • pp.183-186
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    • 1992
  • Jindo Hongju is a traditional liquor in Korea. The characteristic of Hongju are its unique flavour and red color which is extracted from the root of gromwell (Lithospermum erythrorhizon). It is due to these color and flavour that Hongju attracts visual charm. However, the commercial value of Hongju is reduced because of the discoloration of red pigment during storage. Therefore, factors which cause the discoloration of red pigment and methods to prevent discoloration were investigated. The results obtained from this study are summarized as follows. The factors that cause the discoloration were visible light, temperature (beyond $40^{\circ}C$), pH (above 10) and inorganic ion ($Cu^{2-}$). Among all the additives added, Cystein (100 ppm) was the most effective inhibitor of pigment discoloration.

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