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Synthesis of conducting PANi/SiO2 nanocomposites and their effect on electrical and mechanical properties of antistatic waterborne epoxy coating / Anh Son Nguyen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Synthesis of conducting PANi/SiO2 nanocomposites and their effect on electrical and mechanical properties of antistatic waterborne epoxy coating Type de document : texte imprimé Auteurs : Anh Son Nguyen, Auteur ; Thuy Duong Nguyen, Auteur ; Thu Thuy Thai, Auteur ; Anh Truc Trinh, Auteur ; Gia Vu Pham, Auteur ; Hoang Thai, Auteur ; Dai Lam Tran, Auteur ; Thi Xuan Hang To, Auteur ; Duy Trinh Nguyen, Auteur Année de publication : 2020 Article en page(s) : p. 361-370 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antistatiques
Dioxyde de silicium
Epoxydes
Matériaux hybrides
Polyaniline
Polymères -- Propriétés électriques
Polymères en émulsion
Revêtements -- Propriétés mécaniques
Revêtements en phase aqueuse -- Additifs
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyaniline (PANi) has been intensively incorporated in epoxy coatings as a conducting material. However, epoxy coatings containing PANi have poor mechanical properties. In this study, polyaniline/silica (PANi/SiO2) nanocomposites with different contents of silica were prepared via in situ chemical oxidative polymerization method. Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and zeta potential measurements were used to examine the structure and the morphology of synthesized PANi/SiO2 nanocomposites. The thermal and electrical properties of the nanocomposite were studied by thermogravimetric analysis (TGA) and standard four-probe electrode method. It was shown that silica (SiO2) nanoparticles were covered by PANi in PANi/SiO2 nanocomposites and the electrical conductivity of nanocomposites decreased with the increase in SiO2 content. The PANi/SiO2 nanocomposite with 4.1 wt% SiO2 had a conductivity of 7.6 x 10-2 S/cm and that of PANi was 8.7 x 10-2 S/cm. Consequently, epoxy coatings containing 30 wt% PANi/SiO2 nanocomposites displayed a higher surface and volume resistance than the one containing pure PANi. In contrast, the increase in SiO2 content in PANi/SiO2 nanocomposite enhanced the mechanical properties of the epoxy coating, compared to epoxy coating containing pure PANi. The coating containing PANi/SiO2 nanocomposite with 17.2 wt% silica presented good mechanical properties (20 L/mil abrasion resistance, 100 kg cm impact strength) and admissible surface and volume resistivity (1.3 x 1011 Ω/cm2 and 6.6 x 10 10 Ω cm, respectively) for antistatic coatings. Note de contenu : - EXPERIMENTAL : Materials - Preparation of PANi/Sio2 nanocomposites - Preparation of Coatings - Analytical characterization - Conductivity measurement - Mechanical resistance measurement
- RESULTS AND DISCUSSION : Characterization of PANi/SiO2 nanocompositeEn ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00279-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33987
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 2 (03/2020) . - p. 361-370[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Tailored and resistant : More corrosion resistance in aqueous coatings through new wetting and dispersing additives Type de document : texte imprimé Auteurs : Philippe Favresse, Auteur ; Frank Kleinsteinberg, Auteur ; Katrin Roland, Auteur ; Patrick Glöckner, Auteur Année de publication : 2013 Article en page(s) : p. 60-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Agents mouillants
Anticorrosifs
Anticorrosion
Copolymères greffés
Essais (technologie)
Formulation (Génie chimique)
Polyaddition
Polymérisation radicalaire controlée
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Wetting and dispersing additives are indispensable for the production of high quality pigment concentrates with a high color strength and adequate storage stability. However, especially with aqueous coatings, the resistance of corresponding films can deteriorate because of their hydrophilic structure.
The aim of this study was to develop polymeric wetting and dispersing additives for aqueous pigment concentrates which display no significant negative impact on the corrosion protection of aqueous coatings. The polymers were produced using various polymerization processes and comparatively evaluated.Note de contenu : - Wetting and dispersing additives enable a productive dispersion process
- Investigated wetting and dispersing additives
- Production of the pigment concentrates
- Test coatings
- Test methods
- Discussion of the results : Rheological properties of the pigment concentrates
- Coloristic properties at the highest level
- A new benchmark for corrosion resistance
- Reduced water absorption improves resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20336
in PAINTINDIA > Vol. LXIII, N° 11 (11/2013) . - p. 60-63[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15933 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Tailored to endure : New dispersing additives help to protect aqueous coatings against corrosion Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 104-107 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Anticorrosifs
Anticorrosion
Copolymères greffés
Pigments
Polyaddition
Polymérisation radicalaire controlée
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Graft copolymer pigment dispersants were produced by free radical and controlled radical polymerisation and their performance was evaluated in two pigment concentrates for waterborne coatings. Both production technologies produced similar performance, but by modifying the composition of the additive the corrosion resistance of the coatings could be enhanced. Note de contenu : - Wetting and dispersing additives enable a productive dispersion process
- How dispersant structure can affect performance
- Dispersants may be made be several different routes
- Properties of pigments and additives studied
- Test coatings and test methods
- Rheological properties of the pigment concentrates
- Colour strength is enhanced
- Resistance to salt spray and water both improved
- Impact of structure and composition summarisedEn ligne : https://drive.google.com/file/d/1SqJnoHN0IVvklYKHRqxWbGDc_pdCd361/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17719
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2013) . - p. 104-107[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14777 - Périodique Bibliothèque principale Documentaires Disponible Taking care in dispersion developments / Pavel Vasko in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4455 (08/2002)
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Titre : Taking care in dispersion developments Type de document : texte imprimé Auteurs : Pavel Vasko, Auteur ; Pavel Holub, Auteur ; Zdenka Kalabova, Auteur Année de publication : 2002 Article en page(s) : p. 22-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
Emulsifiants
Polymérisation en émulsion
Réduction des composés organiques volatils
Revêtements décoratifs:Peinture décorative
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : New dispersion developments need to address the need for reasonable care of their community and the environment. The authors explain how this is being carried out.
The current development of waterborne dispersions together with cost/performance characteristics are driven by responsible care for the environment and the community. Biocides, APEO's (Alkyl phenol ethoxylates) and VOC's (Volatile Organic Compounds) are environmental and community issues that are currently in focus. The implementation of the Biocidal Product Directive (BPD 98/8/EC) is imminent. APEO's have been eliminated in many applications, in emulsion polymerisation the exchange is not complete but producers are voluntarily eliminating their use. Recent changes in the regulations concerning the emission of the VOC's have led to a growing interest and need for more environmentally friendly coatings.
New dispersion developments including novel morphology and self crosslinking chemistry have addressed the above needs and contributed to satisfying the market requirements for new products.Note de contenu : - Preservatives
- Biodegradable emulsifiers for emulsion polymerisation
- VOC reduction in decorative paints
- New waterborne dispersions for VOC compliant architectural coatings
- Table : VOC reduction scheme for waterborne paints. (Products based on VOC g/L rady to use including tinters)Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28034
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 192, N° 4455 (08/2002) . - p. 22-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000322 - Périodique Bibliothèque principale Documentaires Disponible Technical review on hydrophobically modified alkali swellable (HASE) emulsion / Prashant Waykole in PAINTINDIA, Vol. LXXIII, N° 1 (01/2023)
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Titre : Technical review on hydrophobically modified alkali swellable (HASE) emulsion Type de document : texte imprimé Auteurs : Prashant Waykole, Auteur ; Suraj Sawant, Auteur Année de publication : 2023 Article en page(s) : p. 53-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emulsion alcali soluble modifiée de façon hydrophobe
Epaississants
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : This article focuses on the definition, mechanism of action, synthesis, effect in the final paint formulation and market review of HASE Emulsion polymer.
Hydrophobically modified alkali soluble polymer emulsions are important class of rheology modifiers for waterborne coatings. Hydrophobically modified water-soluble polymers, used by latex paint manufacturers as associative thickeners, provide significant advantages in improving film build and leveling, and decreasing spatter from roller-applied paints. Preparation method of HASE thickeners contains number of monomers ethyl acrylate, methyl methacrylate, associative macro monomer, crosslinking monomer etc. Rheological behaviour of thickener solution depends on number of factors like molecular weight of polymer chain, amount of crosslinking agent used in polymerisation, acid monomer quantity used, and concentration of associative macro monomer. Generally Redox polymerisation is preferable to achieve higher molecular weight polymer.Note de contenu : - Thickening mechanism
- Mechanism of association of HASE polymers with hydrophobes
- Shear rate regions
- Hydrophobically modified alkali swellable emulsion (HASE) market information
- Fig. 1 : Associatio of HASE polymers with hydrophobes
- Fig. 2 : Crosslinked associative rheology modifier
- Fig. 3 : The global hydrophobically modified alkali swellable emulsion market share by application (2016), (%)En ligne : https://drive.google.com/file/d/1pcVxgjH128k0yxwjBIrr0QjXMMkDZefT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39514
in PAINTINDIA > Vol. LXXIII, N° 1 (01/2023) . - p. 53-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24014 - Périodique Bibliothèque principale Documentaires Disponible Testing of emulsions : Some easy and essential methods / Mukund Hulyalkar in PAINTINDIA, Vol. LXXII, N° 2 (02/2022)
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PermalinkThe best for red and yellow / Frank Kleinsteinberg in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4618 (03/2016)
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PermalinkThe development of corrosion resistant 2- and 1-K waterbased zinc-rich paints / Kenichi Nakamura in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 8 (08/2017)
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PermalinkThe effect of novel light stabilisers enhance UV filtering in waterborne UV-curable coatings / Yung-Chi Yang in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4649 (03/2019)
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PermalinkThe effect of precipitated calcium carbonate nanoparticles in coatings / W. S. Wu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 2 (03/2016)
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PermalinkThe use of levulinates as coalescing agents in water-based coatings / Steve Block in SURFACE COATINGS INTERNATIONAL, Vol. 105.1 (01-02/2022)
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PermalinkThe use of levulinates as coalescing agents in water-based coatings / Steve Block in COATINGS TECH, Vol. 19, N° 5 (05-06/2022)
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PermalinkThe use of naphthenic acid ester as a dispersing agent in aqueous conductive primers / James L. Carmine in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 836 (09/1994)
PermalinkUne thématique éternelle in GALVANO ORGANO, N° 861 (12/2017)
PermalinkPermalinkThoughts on waterborne industrial coatings / Clifford K. Schoff in COATINGS TECH, Vol. 14, N° 10 (10/2017)
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PermalinkTitanate or silane ? / Salavatore Monte in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4471 (12/2003)
PermalinkTo label or not to label / Houshang Kheradmand in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4599 (08/2014)
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PermalinkPermalinkTransparent protection from nanomaterials / Tarek Khalil in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2022)
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