Matting agents with benefits / Hans-Rudolf Lehnert in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 197, N° 4516 (09/2007)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 197, N° 4516 (09/2007) . - p. 40-42 Titre : Matting agents with benefits Type de document : texte imprimé Auteurs : Hans-Rudolf Lehnert, Auteur ; Norbert Wings, Auteur Année de publication : 2007 Article en page(s) : p. 40-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agent mattant Essais dynamiques Gel de silice Résistance à l'abrasion Revêtements -- Additifs:Peinture -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Synthetic silica products are supplied to the coatings industry in a variety of applications. A wide range of products to fit the differing application performance requirements of the various coatings segments is available. Silica gels in particular are widely used as matting agents in paints and coatings. The focus of this article is to introduce: - A silica gel matting agent technology, which combines high matting efficiency with superior polishing resistance of the applied matt coating, - A test method enabling the coatings producer to get reproducible results and thus an objective qualification of the surface properties of a matt coating. Note de contenu : - Silica gel technology - Matting agents - Abrasion testing - Test results with the new silica gel product concept En ligne : https://drive.google.com/file/d/17wrJ8PQQNo8z6aQO0UWzE7lsOWE3Mvs3/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27304 [article]

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Silica gels advance / David Kent in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4481 (10/2004)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4481 (10/2004) . - p. 21-24 Titre : Silica gels advance Type de document : texte imprimé Auteurs : David Kent, Auteur ; Timothy Fletcher, Auteur ; Norbert Wings, Auteur Année de publication : 2004 Article en page(s) : p. 21-24 Langues : Anglais (eng) Catégories : Agent mattant Anticorrosion Calcium Couches minces Gel de silice Pigments Revêtements -- Séchage sous rayonnement:Peinture -- Séchage sous rayonnement Revêtements en phase aqueuse:Peinture en phase aqueuse Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : Why calcium modified silica gel pigment technology will be turned to more as the preferred non-toxic method of corrosion control and gloss reduction in all types of coatings ? Synthetic silica gel products are widely used in the coatings industry. The annual consumption specialty silica in Coatings is estimated at 32,700 mt only for Western Europe. A wide range of products to fit the differing application performance requirements of the various coatings segments is available. The Grace portfolio for the industry includes Silica gel products, precipitated and colloidal silica. The focus of this article is on silica gel products addressing future market in needs in matting and in corrosion protection. Note de contenu : - Silica gel technology - Matting agents - Coil coatings - Thin-film coatings - Radiation-cured coatings - Waterborne coatings Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27684 [article]

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Silica gels sector to grow / David Kent in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4482 (11/2004)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4482 (11/2004) . - p. 12-14 Titre : Silica gels sector to grow Type de document : texte imprimé Auteurs : David Kent, Auteur ; Tim Fletcher, Auteur ; Norbert Wings, Auteur Année de publication : 2004 Article en page(s) : p. 12-14 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Calcium Gel de silice Métaux -- Revêtements protecteurs Pigments Index. décimale : 667.9 Revêtements et enduits Résumé : The author conclude, in Part 2, why silica gels will increase in popularity as the desire to couple high anti-corrosive perfomance with environmental awareness intensifies. The development of more environmental friendly coating systems presents new challenges to the manufacturers of speciality chemicals and additives for coatings. New matting agents designed to meet the specific challenges provided by waterborne, high-solids and, to some extent UV curing systems have been commercialised in recent years. However, there is a continuiting demand for new, improved products and development programmes are ongoing. It is expected that calcium modified silica gel pigment technology will be turned to more and more as the preferred non-toxic method of corrosion control in all types of coatings, as the desire to couple high anti-corrosive performance with environmental awareness intensifies. Note de contenu : - Addition levels - Corrosion resistance suppression - Other combinations - Grades offered - Weathering results - FIGURES : 1. Representation of the surface of Ca/Silica pigments - 2. Diagrammatic representation of the mechanism of action of Ca/Silica pigments (ferrous substrates) - 3. Type ACs vs. zinc chromate in a 2 pack epoxy and a short oil alkyd after 10 years outdoor weathering - 4. The effect of Type AC3 in combination with silane A 187 on wet adhesion of a wash primer formulation on aluminium after water soaking at 40°C - 5. The effect of the combination of type with Alcophor 827 in a waterborne alkyd (resydrol 436W) on salt performance over degreased cold rolled steel - 6. Diagrammatic representation of the ion-exchange between silica gel and calcium ions. - TABLES : 1. Typical properties of Ca/silica pigments compared to conventional anti-corrosive pigments - 2. A comparison of the different grades of calcium modified silica gel pigments Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27676 [article]

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