Additives for powder coatings / Robertino Chinellato in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 211, N° 4669 (06/2021)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 211, N° 4669 (06/2021) . - p. 15-18 Titre : Additives for powder coatings Type de document : texte imprimé Auteurs : Robertino Chinellato, Auteur Année de publication : 2021 Article en page(s) : p. 15-18 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Catalyseurs Charges (matériaux) Polymères Revêtement poudre -- Additifs Revêtements organiques Rhéologie Tribologie (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : In the world of resins and related paints, which is not an exact science, the role of additives and special products is extremely important to obtain special characteristics that often are a fundamental requirement of paints for meeting predefined technical specifications or to meet the needs of end users. In fact, paints that normally play an aesthetic role in improving a product's appearance, also provide mechanical or chemical resistance to environmental stress. As an example, we can mention paints for household appliances or those for aluminium frames, two cases where the satisfaction of technical specifications is a necessary requirement for approval in the end market. By definition, additives are added in small quantities, often less than one point percent, to reinforce selected chemical or physical properties of the finished paint. The powder coatings sector is no exception and has some limitations that are intrinsic to the technology itself and these are linked to the physical state of the paint before application on the piece to be painted. A peculiar example is the so-called "orange peel" which sometimes distinguishes the final appearance of powder coatings compared to more conventional liquid coatings. This is due to the fact that the powder paint particles must first melt (melting), then aggregate to form a homogeneous liquid film (flow) and finally crosslink to form the final coating film (crosslinking). Therefore, additives used as flow promoters play an important role in powder coating technology. Flow promoters are additives that allow the paint film to wet the substrate homogeneously during the melting phase of the powder paint and then reduce the orange peel effect during the crosslinking phase. Surface tension is the parameter that regulates the wettability of the substrate ; a low surface tension implies high wettability of the substrate. Note de contenu : - Other special products for powder coatings - Table 1 : Two types of flow promoters in the powder coatings sector - Table 2 : Catalysts used in powder coatings - Table 3 : Tribocharging measurements - Table 4 : Products used to create special effects En ligne : https://drive.google.com/file/d/1P0TPCrpidMIZUIc3Yaz1IY1Q9YR3PFTI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36766 [article]

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Additives heighten performance solutions / Christophe Paulo in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4589 (10/2013)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 203, N° 4589 (10/2013) . - p. 26-27 Titre : Additives heighten performance solutions Type de document : texte imprimé Auteurs : Christophe Paulo, Auteur ; Jennifer Stasser, Auteur Année de publication : 2013 Article en page(s) : p. 26-27 Langues : Anglais (eng) Catégories : Additifs Automobiles -- Matériaux Charges (matériaux) Composites Dispersions et suspensions Electronique -- Matériaux Eoliennes -- Matériaux Epoxydes Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Polycarbonates Polyéthers Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Taille des particules Thermodurcissables Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : Dow Corning provides speciality additive solutions to enhance composite processing and material performance. The company's product portfolio for thermoplastic, thermoset and composites materials includes : Processing aids for improving composite flowability ; filler treatments for improved dispersion and enhanced performance ; high performing halogen free flame retardant alternatives ; polymer modification ; additives for thermosetting resins. Note de contenu : - Enhancing composite flowability - Treating filler for improved dispersion using surface solutions - Halogen free flame retardant - Special additives for polymer modification - Additives for thermosets : electronic, wind, automotive En ligne : https://drive.google.com/file/d/1m49kKdchlIcLsM_Wzp1S_9odYJDaOJOY/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20020 [article]

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Adhesives and sealants 101 : Fillers / Keith Sorrell in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 15, N° 8 (08/2008)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 15, N° 8 (08/2008) . - p. 29-31 Titre : Adhesives and sealants 101 : Fillers Type de document : texte imprimé Auteurs : Keith Sorrell, Auteur Année de publication : 2008 Article en page(s) : p. 29-31 Langues : Américain (ame) Catégories : Charges (matériaux) Colles:Adhésifs Mastics Tags : Matières  charges  Mastics Index. décimale : 668.3 Adhésifs et produits semblables Résumé : When a filler is used in an adhesive or sealant formulation, it is typically meant to take up space. But the space it occupies has a crucial function, making it a role player and a key component to your product's success. A number of functional fillers are available for various application, including calcium carbonate, alumina trihydrate, barium sulfate, silica and kaolin clay. Following is a detailed description of each. En ligne : http://www.adhesivesmag.com/Articles/Feature_Article/BNP_GUID_9-5-2006_A_1000000 [...] Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2431 [article]

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Aliphatic anionic polyurethane microemulsion leather filling-retanning agent / Bao Lihong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 73-80 Titre : Aliphatic anionic polyurethane microemulsion leather filling-retanning agent Type de document : texte imprimé Auteurs : Bao Lihong, Auteur ; Lan Yunjun, Auteur ; Shufen Zhang, Auteur Année de publication : 2007 Article en page(s) : p. 73-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Caractérisation Charges (matériaux) Chimie analytique Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux -- Propriétés physiques Formulation (Génie chimique) Imperméabilisation Microémulsions Poids moléculaires Polymères aliphatiques Polyuréthanes Retannage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The retanning process plays an important role in optimizing the leather’s colour, levelness, softness, fullness, and hydrophobicity. Polymer retanning agents are important materials for this process. The present study used maleic anhydride modified castor oil (MCO), PEG1000 (polyethylene glycol) and IPDI (isophorone diisocyanate) as main materials to synthesize polyurethane microemulsions (MC-PURs) and employed them to retan chrometanned leathers. The hydroxyl functionality of MCO was investigated by chemical and 1HNMR analysis, and confirmed to be about 2.0. The chemical structures of MCO, prepolymer and MC-PUR were characterized by IR. The optimized synthesis formulation and polyurethane microemulsion MC-PUR3 for MC-PURs as retanning agent was selected by comparing the properties of retanned leathers, such as softness, fullness, grain tightness, tensile strength, extension at break, depth of shade, waterproof properties et al. Then, MC-PUR3 was characterized by means of DSC, TG/DTG and TEM techniques. SEM microgram of MC-PUR3 retanned leather shows that the fibres are well dispersed. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of maleic anhydride modified castor oil (MCO) - Preparation of microemulsions of polyurethane filling retanning agents (MC-PURs) - Determination of molecular weight - H n.m.r. spectroscopy - Purification - FT-IR spectroscopy - Differential scanning spectroscopy - Thermo-gravimetric analysis - Transmission electron microscope analysis - Measurement of final dyebath exhaustion - Physical and waterproofness properties of leathers - Organoleptic properties of the final leathers - Scanning electron microscopic analysis - RESULTS AND DISCUSSION : Determination of the average molecular weight, hydroxyl number and average hydroxyl functionality (Fn(OH)) of MCO - Determination of the average hydroxyl functionality of MCO by chemical analysis - Determination of the average hydroxyl functionality of MCO by 1HNMR - Chemical structure analysis by IR - OPTIMIZATION OF RETANNING AGENT : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers - Effect of carboxyl content of MC-PUR on the properties of retanned leathers - Effect of NCO/OH molar ratio on the properties of retanned leathers - Thermal properties of MC-PUR3 - Table 1 : Basic formulations of MC-PURs - Table 2 : Filling, retanning and wet finishing processes - Table 3 : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers - Table 4 : Effect of carboxyl content of MC-PUR on the properties of retanned leathers - Table 5 : Effect of NCO/OH molar ratio on the properties of retanned leathers En ligne : https://drive.google.com/file/d/19ti2BicD3kfHFF4Z4QLX1cSWPC0J39gs/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39037 [article]

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Aluminium trihydroxide (ATH) : a UV transparent filler for UV-curable coatings / Anthony A. Parker in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 829 (02/1994)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 66, N° 829 (02/1994) . - p. 39-46 Titre : Aluminium trihydroxide (ATH) : a UV transparent filler for UV-curable coatings Type de document : texte imprimé Auteurs : Anthony A. Parker, Auteur ; E. S. Martin, Auteur ; T. R. Clever, Auteur Année de publication : 1994 Article en page(s) : p. 39-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Charges (matériaux) Hydroxyde d'aluminium Réticulation (polymérisation) Revêtements -- Propriétés optiques:Peinture -- Propriétés optiques Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : Unlike other extenders, aluminum trihydroxide (ATH) absorbs very little ultraviolet radiation over the wave-length range which is commonly used to activate most UV photoinitiators (220 to 400 nm). This is demonstrated by comparing the total transmittance (diffuse and specular) of UV-cured polyurethane films with and without the use of ATH as an extender. Difference spectra between filled and unfilled systems show that ATH does not interfere with the transmittance of UV light. On the other hand, a comparable study with a silica-filled system indicates that a higher proportion of UV light is absorbed. Solid state 13C NMR and FTIR spectra of ATH-filled, silica-filled, and neat systems show that the final chemical components of the crosslinked polymer matrices are similar (...) Note de contenu : - EXPERIMENTAL : Composition and physical properties of fillers - Coating application and curing - Film densities and effective polymer concentrations - UV/VIS spectroscopy of cured films - UV/VIS spectroscopy of powders - Solid state 13C nuclear magnetic resonance (NMR) of cured films - Fourier transform infrared spectroscopy (FTIR) of cured films - Differential photocalorimetry studies (DPC) - RESULTS AND DISCUSSION : Effect of fillers on the degree of cure - UV/VIS measurements of cured films : total transmittance and absorbance - UV/VIS measurements of cured films : specular and diffuse transmittance - UV/VIS measurements of neat powders - Effect of particle size on the UV transparency of ATH Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18603 [article]

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An easy, tried-and-true method to ensure quality in coatings / Jeffrey B. Carr in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4638 (02/2018)  

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Analyse rhéologique du poly(diméthylsiloxane) et des réseaux de PDMS chargés à la silice / F. Clément in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 2 (04/1999)

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Analyse rhéologique de réseaux de poly(diméthylsiloxane) chargés à la silice / F. Clément in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 1 (10/1998)

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Analysis of impact loading response on the composites materials as a function of graphite filler content using Taguchi Method / Drai Ahmed Smait in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 2 (04/2023)  

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Analysis of mechanical and water absorption properties of hybrid composites reinforced with micron-size bamboo fibers and ceramic particles / Danish Tahir in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 1 (2024)  

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Antibacterial and antifungal properties of clear coating film containing silver-cytokinin complex as a filler / Fumihiko Ohashi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)  

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Antifouling efficiency of polymer coatings with SeNPs-loaded SiO2(rh)-PHMG composite as antimicrobial agent / U. Kharchenko in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 4 (07/2024)  

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Application à la formulation des silicones / Catherine George in CAOUTCHOUCS & PLASTIQUES, N° 803 (04/2002)

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Une association en pleine expansion / I. Bétremieux in CAOUTCHOUCS & PLASTIQUES, N° 749 (04/1996)

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Auxiliaries for the leather industry / Zschimmer & Schwarz (Max-Schwarz-Straße 3-5, Lahnstein, Germany) / Lahnstein [Germany] : Zschimmer & Schwarz (2012)

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Banned chemicals and their alternatives in Polymer and Paint Industries / U. Shah in PAINTINDIA, Vol. LX, N° 4 (04/2010)

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Basic study of extensional flow mixing for the dispersion of carbon nanotubes in polypropylene by using capillary extrusion / K. Matsumoto in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 4 (2021)  

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Better filling of polyamides / Siegfried Heckl in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 2 (02/2011)

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Better heat conduction / Dirk Kruber in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 6 (06/2014)  

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Biopolymers produced from gelatin and whey protein concentrate using polyphenols / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 3 (03/2014)  

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