Earth pigments : for a colourful tomorrow / Idris Abedin Massawi in PAINTINDIA, Vol. XLVII, N° 5 (05/1997)

[article]  inPAINTINDIA > Vol. XLVII, N° 5 (05/1997) . - p. 41-45 Titre : Earth pigments : for a colourful tomorrow Type de document : texte imprimé Auteurs : Idris Abedin Massawi, Auteur Année de publication : 1997 Article en page(s) : p. 41-45 Langues : Anglais (eng) Tags : 'Pigment  minéral'  'Propriété  physique'  'Composition  chimique' Index. décimale : 667.9 Revêtements et enduits Note de contenu : - The cause of error : Attitude – Ability – Built-in problems - The first law of quality : Your performance standard - The message - Earth pigments – an introduction - Red iron oxide pigments - Yellow iron oxide pigments - Brown iron oxide pigments - Black iron oxide pigment - Micaceous iron oxide - Factors determining pigment value : Type and purity of colour – Fineness of the particle size or texture – Staining power – Hiding power – Spreading power - Markets and applications - Paint industry uses - Construction industry uses - Other pigment applications - Natural 'versus' synthetic - What colour is the future ? Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13220 [article]

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Earth pigments - for a colourful tomorrow / Idris Abedin Massawi in PAINTINDIA, Vol. XLVII, N° 5 (05/1997)

[article]  inPAINTINDIA > Vol. XLVII, N° 5 (05/1997) . - p. 41-45 Titre : Earth pigments - for a colourful tomorrow Type de document : texte imprimé Auteurs : Idris Abedin Massawi, Auteur Année de publication : 1997 Article en page(s) : p. 41-45 Langues : Anglais (eng) Tags : 'Pigment  minéral'  'Propriété  physique'  'Composition  chimique' Index. décimale : 667.9 Revêtements et enduits Résumé : Earth pigments are natural mineral pigments occurring in various colours and shades. They are natural varieties of iron oxide pigments and are commercially known as oxides, ochres, siennas and umbers. They are obviously categorised on the basis of colour. Their colours vary from red, yellow, orange to brown and black. This is mainly due to the type and quality of iron oxide mineral that is present. In general - the anhydrous form of ferric oxide, Haematite - Fe2O3 is responsible for the red colour, while the hydrate iron oxide, Limonite - 2Fe2O3.3H2O gives yellow colouration. Hydrated iron oxide in the presence of manganese oxide produces an orange shade an when having a higher manganese oxide content of over 10%, gives a rich brown colour. Magnetite - Fe3O4 is responsible for the black colour. In addition to above, micaceous iron oxide may also be added. It is a crystalline, platelike, form of iron oxide with high haematite content. Instead of colour, it is characterised by its metallic sheen and flat lamellar nature. Thus, it differs from the more granular forms of the other natural oxides. Note de contenu : - Red iron oxide pigments - Yellow iron oxide pigments - Brown iron oxide pigments - Black iron oxide pigment - Micaceous iron oxide - Factors determining pigment value - Markets and applications - Paint industry uses - Construction industry uses - Other pigment applications - Natural 'versus' synthetic - What colour is the future ? Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13240 [article]

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