Catalytic synthesis of hematite-mica pearlescent pigments using a low-temperature method / Lihong Han in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 6 (11/2012)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 6 (11/2012) . - p. 695-702 Titre : Catalytic synthesis of hematite-mica pearlescent pigments using a low-temperature method Type de document : texte imprimé Auteurs : Lihong Han, Auteur ; Yanchang Chen, Auteur ; Modan You, Auteur ; Yu Wei, Auteur Année de publication : 2012 Article en page(s) : p. 695-702 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Catalyse Hématite Mica Pigments Pigments -- Synthèse Pigments nacrés Index. décimale : 667.9 Revêtements et enduits Résumé : A novel low-temperature method is described for the direct synthesis of Fe2O3/mica pearlescent pigments with ferric chloride as a precursor and trace Fe(II) as a catalyst which does not require any calcination step. The as-synthesized pigments are characterized in detail by means of different techniques including X-ray diffraction, field emission scanning electron microscopy, energy dispersive spectroscopy, and colorimetry. The influence of various factors on the transformation from Fe(OH)3 coating layer to crystalline hematite coating layer is investigated, respectively. Furthermore, this paper studies several critical technological parameters pertaining to the influences on morphology and color properties of the pigments such as the coating temperature and the pH value. Note de contenu : - The catalysis of Fe(II) on the transformation of Fe(OH)3 coated on mica - The effect of the coating temperature - The effect of the initial pH value DOI : 10.1007/s11998-012-9419-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9419-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16655 [article]

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Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends / Tetsuto Kajiyama in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 4 (08/2018)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXIII, N° 4 (08/2018) . - p. 564-573 Titre : Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends Type de document : texte imprimé Auteurs : Tetsuto Kajiyama, Auteur ; T. Yasuda, Auteur ; T. Yamanaka ; K. Shimizu ; T. Shimizu ; E. Takahashi ; A. Ujiie ; K. Yamamoto ; T. Koike ; Y. Nishitani Année de publication : 2018 Article en page(s) : p. 564-573 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères Composites polymères Composites thermoplastiques -- Moulage par injection Composites thermoplastiques -- Propriétés mécaniques Copolymère styrène-éthylène-butadiène Essais dynamiques Matières plastiques -- Extrusion Mica Microscopie électronique à balayage Polyéthylène Polypropylène Taille des particules Index. décimale : 668.4 Plastiques, vinyles Résumé : The mechanical properties of polyethylene (PE)/polypropylene (PP)/styrene-ethylene/butylene-styrene (SEBS)/mica composites were investigated as a model composition. Four types of mica with different particle sizes and different aspect ratios were used. These composites were extruded by a twin-screw extruder and subsequently injection molded, and their mechanical properties, including their tensile, bending, and impact properties were evaluated. The addition of mica to PE/PP/SEBS effectively improved its mechanical properties; the addition of SEBS as a compatibilizer likewise enhanced the mechanical properties compared with those of PE/PP composites without SEBS. The use of larger average particle size and higher aspect ratio mica, such as M-35, M-27, and P-33, effectively increased the tensile and bending properties of the PE/PP/SEBS/mica composites. The morphologies of the composites with an added mica as observed by scanning electron microscopy, showed good dispersion between the matrix polymer and the mica. Note de contenu : - EXPERIMENTS : Materials - Mixing of materials - Molding of composites - Mechanical tests of composites - SEM observations - RESULTS AND DISCUSSION : Effect of addition of SEBS and mica on mechanical properties - Effect of the addition of four types of mica on the tensile, bending, and impact properties - Morphology of PE/PP, PE/PP/SEBS, PE/PP/mica and PE/PP/SEBS/mica composites DOI : 10.3139/217.3568 En ligne : https://drive.google.com/file/d/1iVXN53SJLd6VGni0y4QO5Gy7sgVJjdrP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30896 [article]

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Effect pigments - pearlescent pigments (Part 1) / Yash Melkeri in PAINTINDIA, Vol. LXVII, N° 4 (04/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 4 (04/2017) . - p. 70-76 Titre : Effect pigments - pearlescent pigments (Part 1) Type de document : texte imprimé Auteurs : Yash Melkeri, Auteur ; Tipanna Melkeri, Auteur Année de publication : 2017 Article en page(s) : p. 70-76 Langues : Anglais (eng) Catégories : Matières plastiques -- Coloration Mica Oxydes métalliques Pigments à effets spéciaux Pigments inorganiques Pigments nacrés Index. décimale : 667.2 Colorants et pigments Résumé : Pearlescent pigment is a type of effect pigment. It is obtained by coating metal oxide on laminar flat surfaces such as natural mica. Different metal oxides are used to prepare pearlescent pigments, such as titanium dioxide, iron oxide, zirconium oxide, chromium oxide etc. Substrate selected can be either natural or synthetic. Between the two, natural mica is widely used substrate to prepare pearlescent pigments. But nowadays synthetic mica and borosilicateglass are also used to prepare pearlescent which provide brilliant sparkling effect. Pearlescent effect is observed as the result of multiple reflection, refraction and diffraction phenomenon. When mica is coated with titanium dioxide, a silver colour pearlescent pigment is obtained. As the thickness of TiO2 coating increases, because of the interference effect the colour changes from silver to yellow to pink to blue to green. The coating of iron oxide on mica results into bronze, copper and wine red colours as the thickness of the coating increases. When mica is coated with titanium dioxide and iron oxide together, a gold colour pearl pigment is obtained. Pearl pigments are available in the various grades depending upon the particle size. Pearlescent pigments are used in paints, plastics, papers, and automotive industry. One must follow some basic guidelines to use pearl pigment in plastics. In contrast to absorption colours, there is a trick in mixing colours to get desired colour in pearl pigment. Note de contenu : - NATURAL MICA : Calcium-aluminum borosilicate - Fluorophlogophite - Aluminum oxide (alumina) - METAL OXIDE - PEARLESCENT EFFECT - INTERFERENCE EFFECT - PEARLESCENT PIGMENTS IN PLASTICS - GUIDELINES FORF USE OF PEARLESCENT PIGMENTS IN PLASTICS - IMPORTANT TIPS FOR MOLDING AND EXTRUSION - TRICKS OF MIXING COLOURS WITH PEARLESCENT PIGMENTS En ligne : https://drive.google.com/file/d/1Uc7WWN3ZE0Mhp26i4Kgy1lpxDn0rFSOO/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28460 [article]

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Effect pigments-pearlescent pigments (Part 2) / Yash Melkeri in PAINTINDIA, Vol. LXVII, N° 5 (05/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 5 (05/2017) . - p. 64-68 Titre : Effect pigments-pearlescent pigments (Part 2) Type de document : texte imprimé Auteurs : Yash Melkeri, Auteur ; Tipanna Melkeri, Auteur Année de publication : 2017 Article en page(s) : p. 64-68 Langues : Anglais (eng) Catégories : Mica Nacre La nacre est le revêtement intérieur de certaines coquilles de mollusque, composé de cristaux d'aragonite et de conchyoline, aux reflets irisés. C'est un produit recherché depuis longtemps pour la décoration, la marqueterie, la confection de bijoux ou de boutons, au point que certains coquillages tels que les ormeaux ont localement disparu. Certains sont élevés pour la nacre. La nacre résiste mieux aux acides que la coquille et se reconstitue lorsqu'elle est percée ou abîmée chez le coquillage vivant. Lorsqu'un élément étranger irritant entre dans la coquille de ces mollusques, ceux-ci secrètent également de la nacre couche après couche tout autour afin de s'en protéger, formant ainsi une ou plusieurs perles. Contrairement aux autres couches de la coquille, la nacre est synthétisée par le mollusque tout au long de sa vie. La nacre fait partie des matières organique selon la HBJO. Pigments à effets spéciaux Procédés de fabrication Index. décimale : 667.2 Colorants et pigments Résumé : Pearlescent pigment, a type of effect pigment, obtained by coating metal oxide on laminar flat surfaces such as natural mica. For pearlescent pigment, muscovite grade mica is preferred. Pearlescent pigment manufacturing is a challenging job as there are many stages invo ved in manufacturing pearlescent pigments. Making pearlescent pigment is not pure chemistry oriented process rather it is physiochemical process. Depending upon the particle size and its distribution of mica powder isolated, different grades of pearlescent pigments are manufactured. Various metal oxides are used to coat mica to get various coloured pearlescent pigments. Incineration of coated mica powder is necessary to obtained good luster pigment. Note de contenu : - CHALLENGES IN MANUFACTURING PEARLESCENT PIGMENTS - MANUFACTURING PROCESS FOR MAKING PEARLESCENT PIGMENT : Manufacturing of process mica - Grinding of mica - Sizing of particles - Treatment of grounded and size separated mica - Treatment of metal oxide on mica - Filtration on metal oxide treated pigment - Drying - Blending and packing - Application in paints - FIGURES : 1a. Wet ground mica roller mill - 1b. Wet ground mica with ball mill - 1c. dry gounded mica with jet mill - 2. Sulphate process to prepare TiO2 - 3. Formation of iron oxide from iron sulphate of ferric chloride - 4. Schematic diagram representing metal oxide coating on mica powder - 6. Conversion of oxide to hydroxide during incineration En ligne : https://drive.google.com/file/d/1haF98WckW8WCDLPogGPLDwsRDduZJnpn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28872 [article]

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Effect pigments with customized performance for cosmetics / Kailash M. Mogare in SOFW JOURNAL, Vol. 146, N° 10 (10/2020)  

[article]  inSOFW JOURNAL > Vol. 146, N° 10 (10/2020) . - p. 62-64 Titre : Effect pigments with customized performance for cosmetics Type de document : texte imprimé Auteurs : Kailash M. Mogare, Auteur ; Tushar Navale, Auteur ; Frank Mazzella, Auteur ; Matthias Lergenmüller, Auteur Année de publication : 2020 Article en page(s) : p. 62-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) Ingrédients cosmétiques Mica Pigments Pigments à effets spéciaux Réflectance Index. décimale : 668.5 Parfums et cosmétiques Résumé : In Effect pigments based on natural mica as well as on synthetically prepared substrates such as Synthetic mica, or Silica, Alumina or Borosilicates (Glass flakes), the surface area/particle size plays a crucial role in tailoring effect pigments with desired properties in cosmetic applications. With two pigment series, Sumicosâ„¢ HG ("high-gloss") Line and Prestige® Glow and Glam Line, we have recently build-up a technology to create new effect pigments that provide better chroma, color purity and sparkle in comparison to the conventional effect pigments. The article describes the science behind creating these effect pigments with improved reflectance. Note de contenu : - Fig. 1 : Reflectance versus wavelength of silver pearls ; conventional natural mica-based silver, glass flake-based silver, natural mica-based intense silver - Fig. 2 : Whiteness index versus brightness Index of silver pearls in 10-100μ range ; conventional Silver (natural mica-based), Glass flake Silver, intense silver (natural mica-based) - Fig. 3 : Reflectance versus wavelength of silver pearls in 20-150μ range ; conventional silver (natural mica-based), glass flake-based silver, high gloss silver (natural mica-based) and intense silver (natural mica-based) - Fig. 4 : Whiteness index versus brightness index of silver pearls in 20-150μ range ; conventional Silver (natural mica-based), glass flake silver, intense silver (natural mica-based) - Fig. 5 : Comparison of high gloss product vs Non High gloss products ; gloss at 20°, 60° and 85° angles with corresponding SEM images of raw mica that is used to produce the effect pigments (top : high gloss technology, bottom : conventional technology) En ligne : https://drive.google.com/file/d/161pfsbb1roR6lkRi_rMsn6F5zoY6zaaV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34603 [article]

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Elaboration de mousses nanocomposites polystyrène/silicate lamellaires en milieux supercritique / Thi Thanh Van Ngo / 2007  

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Extenders... barytes, mica & silica / M. Veeramani in PAINTINDIA, Vol. LXVI, N° 2 (02/2016)  

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Facile preparation of anticorrosive and decorative multifunctional coatings via the inclusion of pearlescent oxide-covered mica pigments / Walaa M. Abd El-Gawad in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

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Glassflake-based pearlescent pigment / Dirk Schumacher in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 200, N° 4546 (03/2010)

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Influences of Cr content and heat treatment on the optical property of the green mica-nano Cr2O3 pearlescent pigment / S. A. Hassanzadeh-Tabrizi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 4 (07/2015)  

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Innovations put soul into blues / Raimund Schmid in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4595 (04/2014)  

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Innovative testing technologies / Gabi Kigle-Böckle in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4556 (01/2011)  

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Intérêts des pigments à effets en cosmétique / Kelly A. Dobos in EXPRESSION COSMETIQUE, N° Hors série (12/2015)  

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Introduction of multi-colored aggregate acrylic finish with stone -like appearance and its thickener choice in PAINTINDIA, Vol. LXIII, N° 11 (11/2013)

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Matières de charge pour peintures. Spécifications et méthodes d'essai - Partie 12 : Mica de type muscovite - Norme ISO 3262-12 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (2001)

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Mica and its anti-corrosive properties in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4609 (06/2015)  

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Mica/polypyrrole (doped) composite containing coatings for the corrosion protection of cold rolled steel / Niteen Jadhav in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 2 (03/2018)  

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Modeling and characterization of the relationship between cell size and mechanical behavior of microcellular PP/mica composites / W. Gong in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 4 (09/2010)  

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Novel fly ash & mica epoxy systems for electrical potting applications / Amit Gawde in PAINTINDIA, Vol. LXVI, N° 12 (12/2016)  

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Pearl performance / Stephane Rochard in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4483 (12/2004)

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