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Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions / Kattimuttathu I. Suresh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
[article]
Titre : Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions Type de document : texte imprimé Auteurs : Kattimuttathu I. Suresh, Auteur ; M. G. Harikrishnan, Auteur Année de publication : 2014 Article en page(s) : p. 619-629 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Caractérisation
Cardanol
Granulométrie
Morphologie (matériaux)
Polymères en émulsion
Polyols
Polyuréthanes
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Taille des particules
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Résumé : This article reports on the effect of a diol prepared from a renewable resource, cardanol, on the synthesis, film formation and film properties of aqueous polyurethane dispersions. The PU dispersions were prepared by the acetone process from poly(tetramethylene ether)glycol (PTMEG) and isophorone diisocyanate (IPDI) prepolymer at constant NCO/OH ratio of 1:1.1. Dispersions with two different concentrations of cardanol diol (OH value 140 mg KOH/g) were prepared through chain extension and characterized for solid content, particle size, and particle-size distribution (PSD). Free films were prepared by casting and were studied for their thermal, mechanical, viscoelastic, and hydrophobic properties. Due to the broad PSD, the dispersions containing cardanol diol exhibit better film formation property in comparison to the butane diol chain-extended PU. Soft and flexible films were obtained using cardanol diol as chain extender, whereas brittle film was obtained with butane diol chain extender. Morphological characterization using atomic force microscopy (AFM) and scanning electron microscopy (SEM) suggests a heterogeneous and amorphous nature of the polyurethanes-containing cardanol diol. The thermomechanical and viscoelastic properties show that incorporation of cardanol diol decreases the glass transition temperature and modulus of the films but enhances the properties like thermal stability, hydrophobicity, elongation, etc., of the polyurethane films. Note de contenu : - EXPERIMENTAL : Materials - preparation of cardanol diol - Synthesis of polyurethane dispersion - Preparation of PU films - Characterizations
- RESULTS AND DISCUSSION : Synthesis and characterization of PU dispersions - Particle size and particle-size distribution (PSD) - Mechanical properties - Contact angle measurements - Film morphology - Thermogravimetric analysisDOI : 10.1007/s11998-014-9571-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9571-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21722
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Code-barres Cote Support Localisation Section Disponibilité 16424 - Périodique Bibliothèque principale Documentaires Disponible Effect of particle size of extenders in water based paints - a critical view / M. Veeramani in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
[article]
Titre : Effect of particle size of extenders in water based paints - a critical view Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2019 Article en page(s) : p. 112-118 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Charges (matériaux)
Diluants
Dioxyde de titane
Floculant
Formes des particules
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : Extenders or fillers form the bulk of the paints. I had dealt with this subject earlier under the heading extenders with sufficient introduction, followed by individual description of various extenders and the critical role played by it in the paint of each extenders and the critical role played by it in the paint matrix, if the particle size of the extenders is reduced to a great extent. Now let me recall some of the salient features, in brief, of extenders. Readers may find some repetition from the earlier chapter ; it is only for the purpose of recalling the same for better continuity and also note that extenders are also known as extender pigments also. Note de contenu : - Extender pigments - the forgotten component
- Improving TiO2 use through spacing
- PVC ladder with varying extender volume concentration
- Extender flocculating performs worse
- Extender with air voids improves opacity
- TiO2 reductions of 20% are possible
- Fig. 1 : Reducing extender particle - Improving pigment spacing/dispersion
- Fig. 2 : Opacity curves showing crowding effect
- Fig. 3 : Reducing TiO2 content using extender E : effect on contrast ratio and effect on equivalent reflectance
- Fig. 4 : Effect of extender particle size and shape in glossEn ligne : https://drive.google.com/file/d/1ICUyqzH6irq2OxXEsJctGXW6KKEei_i9/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33637
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Effect of particles sizes and pigment volume concentrations on the barrier properties of polyurethane coatings / Fuchun Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)
[article]
Titre : Effect of particles sizes and pigment volume concentrations on the barrier properties of polyurethane coatings Type de document : texte imprimé Auteurs : Fuchun Liu, Auteur ; Lihong Yang, Auteur ; Enhou Han, Auteur Année de publication : 2010 Article en page(s) : p. 301-313 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de polyvinyle
Concentration pigmentaire volumique
Dioxyde de titane
Polyuréthanes
Revêtements
Spectroscopie d'impédance électrochimique
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : The barrier properties of Fe2O3/polyurethane coatings containing 60-nm and 150-nm Fe2O3 particles with different pigment volume concentrations (PVCs) were investigated by electrochemical impedance spectroscopy and accelerated salt spray tests. The results indicate that the addition of 60-nm Fe2O3 can significantly improve the barrier properties of a coating, while 150-nm Fe2O3. has little effect. The 0.2% PVC 60-nm Fe203 coating had significantly improved protection. DOI : 10.1007/s11998-009-9203-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9203-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9810
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Code-barres Cote Support Localisation Section Disponibilité 012381 - Périodique Bibliothèque principale Documentaires Disponible Effect of pigment particle size in coating application / Sanket Shinde in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[article]
Titre : Effect of pigment particle size in coating application Type de document : texte imprimé Auteurs : Sanket Shinde, Auteur Année de publication : 2019 Article en page(s) : p. 72-74 Langues : Anglais (eng) Catégories : Floculation
Pigments
Résistance aux conditions climatiques
Revêtements organiques
Rhéologie
Taille des particules
Transparence (optique)Index. décimale : 667.2 Colorants et pigments Résumé : Pigments come in various forms - inorganic, organic and what is often referred to as pearlescent or metalscent. The variations of pigments constitute the majority of coating formulations, and the majority of coating formulations, and can dictate the color, vibrancy, durability, protectivity and aesthetic quailty of a finished product. Note de contenu : - Flocculation
- Tint strength
- Transparency
- Flatting, transparency, gloss
- Film appearance and industrial coatings
- Rheological properties and stability
- Chalking weather resistanceEn ligne : https://drive.google.com/file/d/1RWid5v-AnCI7zoif0Lc9_NxiLgf_0aZu/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33643
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Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Effect of the particle sizes of silica on the properties of UV-curing matting coatings / Ziyuan Yang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)
[article]
Titre : Effect of the particle sizes of silica on the properties of UV-curing matting coatings Type de document : texte imprimé Auteurs : Ziyuan Yang, Auteur ; Guozhang Ma, Auteur ; Caiying Hou, Auteur ; Yanxia Niu, Auteur ; Huafeng Duan, Auteur ; Xiaogang Hao, Auteur Année de publication : 2021 Article en page(s) : p. 183-192 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agent mattant
Analyse morphologique
Caractérisation
Copolymère uréthane acrylate
Diisocyanate d'isophorone
Dioxyde de silicium
Oligomères
Polyméthacrylate d'hydroxyéthyle
Polypropylène glycol
Revêtements -- Propriétés mécaniques
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiques
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Stabilité thermique
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : UV-curable matting composites were prepared by micron silica matting agent, polyether diol (PPG), isophorone diisocyanate (IPDI), and 2-hydroxyethyl methacrylate (HEMA) via the in situ polymerization method. The structure, surface morphology, and thermal stability of the composites were characterized by FTIR, SEM, and TGA, respectively. As the main resin in the UV-curable coating, the effects of particle sizes of silica on the gloss, abrasion resistance, adhesion, and hydrophilic properties of coatings were measured. The results show that the agglomeration phenomenon of the modified silica in the composite coating was obviously improved. The smaller the particle size, the lower the gloss of coatings with the same content. The adhesion strength and abrasion resistance of the composites were superior to those of pure UV-curing coatings without silica. The greater the particle sizes of the added modified silica, the stronger the hydrophilicity of the composite. Note de contenu : - EXPERIMENTAL : Material - Preparation of PUA and PUA/Sio2 oligomer - Preparation of UV-curing matting coating with PUA/Sio2 oligomer - Instrument and characterization
- RESULTS AND DISCUSSION : The structure UV-PUA/Sio2 oligomer - The thermal stability of UV-PUA/SiO2 composite films - Effect of particle size of silica on the surface property of UV-cured films - Effec of particle size of silica on the mechanical property of UV-cured filmsDOI : https://doi.org/10.1007/s11998-020-00395-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00395-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35362
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