• Title, Summary, Keyword: inorganic pigment

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Influence of Orgnainc Pigment Addition on Surface Properties of Coating Layer (유기안료의 첨가가 도공층의 표면특성에 미치는 영향)

  • 정경모;이용규
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.36 no.2
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    • pp.47-53
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    • 2004
  • In this experiment the effects of the packing structure of pigment on the surface characteristics (smoothness and gloss) of coated paper are studied. Four different kinds of inorganic pigments(clay), ground calcium carbonate(GCC), two of precipitated calcium carbonates(PCC), and two organic pigments(solid bead and hollow type) were used. The method of measuring the relative sediment volume(RSV) was used to analyze the packing structure of coating layer. The relative sediment volume was measured, using the pressure dewatering dry-cake method(PDDM) and centrifuge method. Also, the particle size distribution of coating pigment was determined. The results showed that small amount of organic pigment, added to inorganic pigment, improved smoothness and its effect was greater when GCC was used as inorganic pigment. The efficiency of organic pigment depended upon the inorganic pigment since the organic pigment is packed in the pores formed by the inorganic pigment.

Effect of Inorganic Pigments on the Workability of Cement Mortars (무기안료가 시멘트모르터의 유동성 미치는 영향)

  • Lee Jae-Yong;Go Seong-Seok;Lee Hyun-Soo
    • Korean Journal of Construction Engineering and Management
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    • v.1 no.2
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    • pp.63-70
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    • 2000
  • Since inorganic pigment, among admixtures used for cement composites, can raise the esthetic value of a building due to its effect of coloring, it can be assumed that the quantity consumed is expected to increase in connection with the recent trend of emphasizing the beautiful sights of the city. We carried out a flow test by changing the mix proportion of the cement mortar mixed with an inorganic pigment, water-cement ratio and pigment mixing ratio in order to present the basic materials for utilizing colored cement mortars. In construction by exploring the effect of inorganic pigments on the workability of cement mortar. In case of red pigment mortar and yellow pigment mortar, the workability was found to be rapidly decreased. To secure proper workability, it is necessary to increase the amount of mixing water, or to use superplasticizer. In case of green pigment mortar, however, it recorded $-2.4{\~}6.9{\%}$, showing that there was almost no change in flow. In case of black pigment mortar, it was also confirmed that there is no need to consider workability.

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Preparation of Talc-Silica Composites by Controlling Surface Charge Behavior (표면전하 거동 조절을 이용한 탈크-실리카 복합체의 제조)

  • Yun, Ki-Hoon;Park, Min-Gyeong;Moon, Young-Jin;Lee, Dong-Kyu
    • Journal of the Korean Applied Science and Technology
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    • v.34 no.1
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    • pp.116-124
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    • 2017
  • A plate-type inorganic pigment complex was manufactured in a manner that treats the surface of the complex by adjusting zeta potential between talc, an inorganic pigment used as a material for color cosmetics, and hydrophobic silica. Talc, which is usually used in the prescription of color cosmetics, is a plate-type, white-colored inorganic substance with good application and spreadability to skin. Furthermore, it features excellent dispersibility and extensibility as well as outstanding heat tolerance, light stability, and chemical resistance. In general, silica contributes to durable makeup and stabilized formulation. This paper covers a process of manufacturing an inorganic pigment complex, where hydrophobic silica was applied to the surface of talc by using differences in zeta potential after the surface charges of talc and hydrophobic silica had been adjusted with cationic and anionic surfactants, respectively. The resulting inorganic pigment complex was composed of talc whose surface is coated hydrophobic silica to the thickness of $1{\mu}m$ or less, which developed an effective hydrophobic property. Zeta potential was measured to analyze the surface charge of an inorganic pigment, and FT-IR, used to check the functional group of a surfactant, was applied to treat the surface of the pigment. The surface of the inorganic pigment complex was observed employing SEM, EDS, and FIB, while its structure was confirmed with XRD and FT-IR.

The Influence of Inorganic Pigments on the Compressive Strength and Absorption of Cement Mortars (무기안료가 시멘트모르타르의 압축강도와 흡수율에 미치는 영향)

  • Shon, Hyuk;Lee, Jae-Yong;Go, Seong-Seok
    • Journal of the Korean Society of Safety
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    • v.19 no.2
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    • pp.104-111
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    • 2004
  • The aim of this study was to investigate the influence of inorganic pigments on the physical properties of cement mortar. For this purpose, the compressive strength and absorption test were carried out on cement mortar imxed with inorganic pigments by changing the proportion of cement mortar, water-cement ratio, and ratio of pigment. The result of this study can be summarized as follows: the compressive strength of colored mortar rapidely increased in red and yellow mortar, as the mix ratio of pigment increased. In case of green and black mortar, however, the compressive strength decresed as the mix ratio incresed. In case of red and yellow mortar, the absorption of colored mortar increased as the mixing ratio increased, if the mean particle diameter of the pigment is small. In case of green and black mortar, the absorption ratio decreased as the mix ratio increased. After investigating the overall physical properties of colored mortar, it was confirmed that the proper mix ratio of pigment securing the properties of colored mortar was below 6% of the weight of the cement to be used.

Properties of Hanji with natural pigment dyeing for use as a fashion material (천연 황색안료 염색한지의 패션소재 적용 가능성 평가에 관한 연구)

  • Kim, Kihoon;Lim, Hyuna
    • The Research Journal of the Costume Culture
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    • v.22 no.2
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    • pp.339-345
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    • 2014
  • This study analyzes and compares Hanji made with loess to Hanji made with kaolin, two yellow-based inorganic pigments, in terms of its physical properties, optical properties, and color fastness to light with the aim of using it as a fashion material. Hanji made by adding inorganic pigments showed an approximately 20% retention ratio on average. This figure was similar to those of loess and kaolin. Physical properties were analyzed, with the following results. A higher amount of additives lowered the apparent density and increased thickness and bulk. In general, inorganic pigment-added Hanji had lower tensile strength, bursting strength, and folding endurance compared to non-additive Hanji. The analysis of optical properties showed a lower brightness index for Hanji made with inorganic pigments compared to non-additive Hanji. When comparing the two inorganic pigments, the brightness of Hanji made with kaolin was higher. Regarding color fastness to light, loess showed level 4 and kaolin showed level 5 when 25% inorganic pigments on pulp were added to Hanji. Thus, Hanji made by adding inorganic pigments during the manufacturing process may perform well as materials for fashion because the additives enhanced both the color fastness to light and the bulk while maintaining the strength. In addition, Hanji dyed with inorganic pigments may have the potential to serve as materials for the fashion industry while still retaining the characteristics of Hanji.

Storage Stability of the Conversion Pigment from Gardenia jasminoides Yellow Pigment (치자황색소로부터 변환된 색소의 저장안정성)

  • Jeong, Hyung-Seok;Park, Keun-Hyung
    • Korean Journal of Food Science and Technology
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    • v.31 no.1
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    • pp.106-109
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    • 1999
  • Storage stability of the blue-green pigment, which was converted from Gardenia jasminoides yellow pigment by Staphylococcus epidermides and Gardenia jasminoides yellow pigment, were investigated at various conditions of light, temperature, inorganic ion and pH, The factors that cause the discoloration were light and temperature $(above\;40^{\circ}C)$. The effects of light and temperature on storage stability of blue-green pigment were less than those of Gardenia jasminoides yellow pigment. Also, the effect of light was decreased by using green filter. There were no significant effects of pH and inorganic ion on both pigments.

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Enhancement in the physical properties of inorganic pigment layer in the color block by incorporation of n liquid additive (액상첨가제에 의한 칼라로도 블록 무기 안료층의 특성 향상)

  • Lee, D.M.;Park, D.W.;Lee, J.H.;Kim, S.M.;Kim, D.Y.;Kim, J.J.;Kim, J.K.;Cho, H.
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.16 no.5
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    • pp.222-226
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    • 2006
  • Effects of a carboxylated styrene-butadiene-based liquid additive on the microstructure, mechanical strength and decolorization resistance of inorganic pigment layer in the color block have been examined. More dense inorganic pigment layer characterized by lower apparent porosity, lower water absorption and uniform pigment distribution has been achieved by incorporation of a liquid additive. Also significant enhancements in the mechanical strength and decolorization resistance have been observed.

Studies on the application of high-gloss plastic pigment for paper coating (I) - Effect of the type of plastic pigment on the quality of coated paper - (종이도공용 고광택 유기안료의 적용에 관한 연구(제1보) -유기안료의 종류가 도공지 품질에 미치는 영향-)

  • 박규재;정경모;황석우;이용규
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • pp.1-6
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    • 1999
  • A study was made to determine the effect of plastic pigment on the coating structure and printability of coated paper. Three basic plastic pigments were investigated such as solid-bead type of plastic pigment, binder type of plastic pigment and hollow type of plastic pigment. In the systems investigated, it was observed that particle shape and structure of plastic pigment had influenced on the rheology of coating color, the state of packing, and the properties of coated paper. The materials investigated were restricted to plastic pigments commonly uesd in paper coating formualtion. Inorganic pigments used in this research were kaolin clay which is platelets and calcium carbonate which is rhombic. Three kinds of plastic pigments were blended in the color made up with two inorganic pigments, respectively. The combination of pigments were carried out (1) to determined the effect of paticle structure of plastic pigment on the state of dispersion of coating color, (2) to observe the effect of temperature of calender on the property of coated paper prepared with plastic pigment. The data indicated that binder and hollow type of plastic pigment had the best results on improving the properties of coated paper such as paper gloss, opacity and air permeability ect. and solid-bead type of plastic pigment in the next place.

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Studies on the Application of High-Gloss Plastic Pigment for Paper Coating(I) (종이도공용 고광택 유기안료의 적용에 관한 연구 -유기안료의 종류가 도공지 품질에 미치는 영향-)

  • 이용규;박규재;정경모
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.3
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    • pp.32-38
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    • 2000
  • This study was carried out to determine the effect of the type of plastic pigment on the coat-ing structure and printability of coated paper. Three kinds of plastic pigments(solid-bead type binder type and hollow type) were used for hti purpose. IN this research it was observed that particle shape and structure of plastic pigment had influenced the rheology of coating color the state of packing and the properties of coated paper. Inorganic pigments used in this research were platelike kaolin clay and rhombic calcium carbonate. Three kinds of plastic pigments were blended with two inorganic pigments respec-tively. The combination of pigments were carried out(1) to determined the effect of particle structure of plastic pigment on the state of dispersion of coating color(2) to observe the effect of calendering temperature on the property of coated paper prepared with different plastic pigments. The data indicated that binder and hollow type plastic pigment gave the best results in improving the properties of coated paper such as paper gloss opacity and air pet-meability.

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Preparation of Functional Antibiotic and Deodorization Pigments Using Surface Modification Method for Special Papermaking

  • Cho, Jun-Hyung;Lee, Yong-Won;Min, Dong-Jin
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • pp.417-421
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    • 2006
  • In this study, colloidal Ag solution was spouted on the surface of the inorganic pigment using the hybridizer system and the spray nozzle. Then, the surface of the inorganic pigment was modified by titanium dioxide in order to possess antibacterial ability. Nano-sized colloidal Ag was made by using a seed sol method in this study. It was confirmed that the size of particle per unit weight becomes enlarged, as the addition of $AgNO_{3}$ increased, and as the time of reaction increased, in the manufacturing process of nano-sized colloidal Ag. The antibacterial measurement of the inorganic pigment showed that the growth of fungus was reduced as the reaction time increased. It was measured that the antibacterial activity was excellent at fixed time frame, after the antibacterial ability appeared in $5{\sim}7$ hours of the antibacterial inoculation experiment. The experiment of titanium dioxide's Photocatalyst effect showed $60{\sim}70%$ efficiency in about 80 minute reaction time of the dissolution results regarding measurements of benzene. It was shown that more than 90% of the dissolution efficiency was achieved in the reaction time of about 30 minute.

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