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Preparation and characterization of polymer/zirconia nanocomposite antistatic coatings on plastic substrates / Chao-Ching Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 1 (01/2013)
[article]
Titre : Preparation and characterization of polymer/zirconia nanocomposite antistatic coatings on plastic substrates Type de document : texte imprimé Auteurs : Chao-Ching Chang, Auteur ; Feng-His Hwang, Auteur ; Chin-Yuan Hsieh, Auteur ; Ching-Chung Chen, Auteur ; Liao-Ping Cheng, Auteur Année de publication : 2013 Article en page(s) : p. 73-78 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antistatiques
Caractérisation
Dureté (matériaux)
Nanoparticules
Polyacrylates
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Réticulation (polymérisation)
Surfaces (technologie)
ZirconeLe dioxyde de zirconium ou oxyde de zirconium(IV) couramment appelée zircone est un composé inorganique du zirconium de formule ZrO2. Ce matériau est une céramique technique d'aspect opaque. Appelé CZ (Cubic Zirconia) lorsque transparent, il est utilisé pour imiter le diamant. Il ne faut pas le confondre avec le zircon (ZrSiO4). Sous sa forme tétragonale, l'oxyde de zirconium est un matériau a vocation mécanique, cette évolution cristallographique lui confère une dureté très élevée (1200Hv) ainsi qu'une bonne résistance aux sollicitations mécaniques (700Mpa en traction et 2000Mpa en compression). Une fois polie, la zircone tétragonale peut atteindre un Ra de 0,02, ce qui permet de l'utiliser pour des pièces de frottement.Index. décimale : 667.9 Revêtements et enduits Résumé : Zirconia nanoparticles synthesized by the sol–gel method were surface modified by the coupling agent, 3-(trimethoxy silyl) propyl methacrylate (MSMA), containing C=C bonds. These particles were then UV-cured together with the hexa-functional monomer, dipentaethritol hexaacrylate (DPHA), to prepare transparent coatings that exhibited antistatic property on plastic substrates. FTIR and solid 29SiNMR were used to analyze the chemical bonds in the formed particles and coatings. Dynamic light scattering measurement of the modified ZrO2 sol indicated a relatively small particle size distribution, 1.5–20 nm, with a maximum intensity at ~5.5 nm. These particles dispersed uniformly in the organic host, poly(DPHA), as was manifested by the high resolution SEM images of the coatings. Antistatic performance of the coatings was examined based on the surface resistivity measurements. A resistivity of 7.74 × 108 ?/? suited to common antistatic applications could be attained for coatings containing 10% inorganic component. In addition, all of the prepared coatings were very hard with pencil hardness 7H–8H, and they attached perfectly to the PMMA substrate according to the peel test. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of ZrO2 sols - Synthesis of antistatic coatings - Characterization
- RESULTS AND DISCUSSION : Analysis of chemical structure by FTIR and 29Si-NMR - Particle size and particle size distribution - Adhesion, hardness, and antistatic testsDOI : 10.1007/s11998-012-9427-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9427-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17474
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Code-barres Cote Support Localisation Section Disponibilité 14636 - Périodique Bibliothèque principale Documentaires Disponible 15124 - Périodique Bibliothèque principale Documentaires Disponible Preparation and characterization of self-crosslinking acrylate emulsion modified by divinyl silane / Xiaolong Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
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Titre : Preparation and characterization of self-crosslinking acrylate emulsion modified by divinyl silane Type de document : texte imprimé Auteurs : Xiaolong Chen, Auteur ; Shusen Cao, Auteur ; Wangting Zhao, Auteur ; Lijun Chen, Auteur Année de publication : 2022 Article en page(s) : p. 887-895 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acrylate d'hydroxyéthyle
Auto-réticulation
Caractérisation
Emulsifiants
Granulométrie
Latex
Polyacrylates
Réticulants en phase aqueuse
SilanesIndex. décimale : 667.9 Revêtements et enduits Résumé : The divinyl silane modified self-crosslinking polyacrylate latex was successfully prepared by semicontinuous seeded emulsion polymerization. Methyl methacrylate (MMA) and butyl acrylate (BA) were used as main monomers and the reaction was initiated by potassium persulfate (KPS). The modified monomer 1, 3-divinyltetramethyldisiloxane (DVMS) and crosslinked monomer hydroxyethyl acrylate (HEA) were introduced into the basic dispersion. Sodium dodecyl sulfonate (SDS) anionic surfactant and alkyl polyglycoside (APG) nonionic emulsifier were utilized as composite emulsifiers. The structure of latex film was characterized by Fourier transform infrared spectroscopy (FTIR). The latex films were tested by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and contact angle (CA) and apparent crosslinking percentage. The particle size of the emulsion was measured by Zetatrac dynamic light scattering instrument. The optimum conditions are as follows: the amount of composite emulsifier is 5.0%, the mass ratio of SDS to APG is 1:1, the amount of initiator is 0.5%, the amount of DVMS is 5.0%, and the amount of HEA is 1.0%. The emulsion has good mechanical stability and chemical stability, and the storage stability is ideal. The dispersion is blue and translucent, with a small particle size. The apparent crosslinking percentage of the latex film is above 89%, and the highest contact angle was more than 98°. The polyacrylate colloidal film prepared in this paper has outstanding thermal stability and hydrophobicity. Note de contenu : - EXPERIMENTAL : Materials - Preparation of self-crosslinking acrylic latex and its film - Characterizations
- RESULTS AND DISCUSSION : FTIR and DSC film analysis of the films - Influence of amount of initiator on conversion percentage and coagulation percentage - The effect of functional monomers on the apparent crosslinking percentage - Water absorption and contact angle of film - Thermal properties of the prepared latex films
- Table 1 : Recipe of self-crosslinking acrylic latex
- Table 2 : Influence of mass ratio of emulsifier on properties of latex
- Table 3 : Particle size of latexDOI : https://doi.org/10.1007/s11998-021-00566-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00566-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38083
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 887-895[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible Preparation and characterization of waterborne polyurethane/polyacrylate emulsions containing sulfonate groups / Xiaorong Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)
[article]
Titre : Preparation and characterization of waterborne polyurethane/polyacrylate emulsions containing sulfonate groups Type de document : texte imprimé Auteurs : Xiaorong Wang, Auteur ; Guoyan Ma, Auteur ; Minyan Zheng, Auteur Année de publication : 2018 Article en page(s) : p. 1217-1227 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Emulsifiants
Energie de surface
Groupement carboxyle
Groupement sulfonate
Haut extrait sec
Polyacrylates
Polymères en émulsion
Polyuréthanes
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyurethane/polyacrylate emulsions (SDPUA) with high solid content were obtained by using carboxyl groups and sulfonate groups as hydrophilic chain-extenders and internal emulsifiers through surfactant-free emulsion polymerization. Polyurethane/polyacrylate emulsions with ethylene diamine (EDA) as chain-extender (EDPUA) were also prepared. The influence of the different 2,4-diamino-benzenesulfonic acid sodium salt (DABS) content on the properties of the SDPUA products was investigated. The main properties of EDPUA were also discussed compared with the SDPUA samples. Dynamic light scattering results showed that when DABS/DMPA molar ratios increased from 1/4.7 to 1/2.28, the particle size increased from 72.2 to 99.7 nm. The particle size of EDPUA emulsion was larger. The steady rheological measurements illustrated that the viscosity decreased with the shear rate increase and the emulsions were displayed as pseudoplastic behavior. Attenuated total reflection Fourier transform infrared results demonstrated the SDPUA products were successfully prepared. As the function of DABS groups, the thermal stability was enhanced. With the increment in DABS/DMPA molar ratio, the contact angles on SDPUA membranes decreased, and the surface free energies increased. The T-peel strength increased to 88.2 N/mm and DABS/DMPA molar ratio increased to 1/2.28, and it was larger than the EDPUA samples. The compatibility of the dual phases was enhanced. Note de contenu : - EXPERIMENTAL : Materials - Preparation of SDPUA composite emulsions - Characterization
- RESULTS AND DISCUSSION : Effect of DABS/DMPA molar ratios on the properties of SDPUA samples - Effect of EDA content on the properties of EDPUA samplesDOI : 10.1007/s11998-018-0062-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0062-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31332
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Code-barres Cote Support Localisation Section Disponibilité 20388 - Périodique Bibliothèque principale Documentaires Disponible Preparation and properties of nano-ZnO/organic fluorine modified polyacrylate finishing agent / Sui Zhihui in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 6 (06/2020)
[article]
Titre : Preparation and properties of nano-ZnO/organic fluorine modified polyacrylate finishing agent Type de document : texte imprimé Auteurs : Sui Zhihui, Auteur ; San Jinglong, Auteur ; Xuedong Wu, Auteur ; Jingbin Zhang, Auteur ; Lingfang Sun, Auteur Année de publication : 2020 Article en page(s) : p. 207-214 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés mécaniques
Essais de résilience
Essais dynamiques
Fluor
Fourier, Spectroscopie infrarouge à transformée de
Humidité -- Absorption:Eau -- Absorption
Latex
Nanoparticules
Oxyde de zinc
Polyacrylates
Potentiel zeta
Résistance à la déchirure
Spectroscopie de photoélectronsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A nano-ZnO/organic fluorine-modified polyacrylate leather finishing agent was prepared using a mixture of a Silyl-modified nano-ZnO, dodecafluoroheptyl methacrylate (DFMA), methyl methacrylate (MMA) and butyl acrylate (BA) as raw materials. A semi-continuous seeded emulsion polymerization followed. The overall research objective was to improve the bacteriostatic, hydrophobicity and anti-aging properties of leather articles. The structure of the composite emulsion and its film were characterized and analyzed by FT-IR, TEM and XPS. The results showed that the latex particles had an obvious core-shell structure, a smooth surface and were monodisperse. The particle size of the emulsion ranged between 30 and 50 nm. The average value of Zeta potential was -40.1 mV which signified a good emulsion stability. The composite emulsion and its film had good UV resistance and water resistance. When the content of organic fluorine in the film was a maximum 20 %, the contact angle of a water drop on the finished leather, tensile strength and tear strength were 133.48°, 620 N and 61 N, respectively. When the content of nano-ZnO in the film was 1.0%, the average width of antibacterial band of finished leather was 2.1 mm. The finished leather also demonstrated a good anti-aging property. Note de contenu : - MATERIALS AND METHODS : Materials - Modification of nano-ZnO - Preparation of nano-ZnO/organic fluorine-modified polyacrylate emulsion - Finishing process of leather
- CHARACTERIZATION AND PERFORMANCE MEASUREMENTS : Fourier transform infrared spectra (FT-IR) analysis - Particle size and zeta potential of composite emulsion - Morphology of latex particles (TEM) - XPS analysis of latex film surface - Water absorption measurement of latex film - UV resistance measurement of composite emulsion - EDS-mapping analysis of finished leather - The contact angle measurement of leather to water - Measurement of application properties
- RESULTS AND DISCUSSION : FT-IR analysis - Particle size distribution and zeta potential of emulsion - Morphological analysis of emulsion partifles - XPS analysis of latex film - Water absorption of latex film - UV transmittance of composite emulsion - EDS analysis of leather surface - Bacteriostatic property of the finished leather - Contact angle of leather to water - Strength test of leather - Anti-aging test of leather - Physical performanceDOI : https://doi.org/10.34314/jalca.v115i6.3823 En ligne : https://drive.google.com/file/d/1zvX5ebHIRemL_rlmmM5UMHqq_IBQQ7dE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34322
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Code-barres Cote Support Localisation Section Disponibilité 21821 - Périodique Bibliothèque principale Documentaires Disponible Preparation, characterization and properties of UV-curable waterborne polyurethane acrylate/siO2 coating / Qiu Fengxian in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 5 (09/2012)
[article]
Titre : Preparation, characterization and properties of UV-curable waterborne polyurethane acrylate/siO2 coating Type de document : texte imprimé Auteurs : Qiu Fengxian, Auteur ; Heping Xu, Auteur ; Yingying Wang, Auteur ; Jicheng Xu, Auteur ; Dongya Yang, Auteur Année de publication : 2012 Article en page(s) : p. 503-514 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Dioxyde de silicium
Matériaux hybrides
Polyacrylates
Polyuréthanes
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : The UV-curable waterborne polyurethane acrylate (UV-WPUA) oligomer was first prepared based on isophorone diisocyanate (IPDI), polyether polyol (NJ-220), dimethylol propionic acid (DMPA), and hydroxyethyl methyl acrylate (HEMA) via an in situ method. With the different content tetraethoxysilane (TEOS) and 3-glycidyloxypropyltrimethoxysilane (GLYMO) as coupling agents, a series of waterborne UV-WPUA/SiO2 oligomers were prepared by the sol–gel process. The physical and mechanical properties of the UV-WPUA and UV-WPUA/SiO2 hybrid coating materials were measured. The UV-WPUA and WPUA/SiO2 hybrid materials were characterized using FTIR spectra, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD) measuring apparatuses to determine their structures, thermal properties, surface morphologies, etc. The results showed the SiO2 particles of the hybrid materials had wide dispersion, forming a good interfacial bonding layer on surfaces. The tensile strength, water resistance, and thermal properties of the hybrid materials were better than those of the UV-WPUA. The resulting UV-WPUA/SiO2 hybrids are promising for a number of applications, e.g., for high-performance water-based UV-curable coatings. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of UV-WPUA oligomer - Preparation of UV-WPUA/SiO2 hybrid oligomer - Preparation of UV-WPUA0 and UV-WPUA/SiO2 hybrid coating films - The apparent viscosity of UV-WPUA and hybrid oligomers - The particle size and polydispersity of UV-WPUA and hybrid oligomers - Structure characterization of the UV-WPUA and hybrid oligomers - The surface drying time of UV-WPUA0 and hybrid coatings films - The gel content of UV-WPUA0 and hybrid coating films - The hardness of UV-WPUA0 and hybrid coating films - The tensile strength and elongation at break of UV-WPUA0 and hybrid films - The water absorption (or swelling degree) of UV-WPUA0 and hybrid films - Thermal properties - SEM - TEM - XRD
- RESULTS AND DISCUSSION : The physical properties of UV-WPUA and hybrid oligomers - The mechanical properties of UV-WPUA0 and hybrid coating films - The water absorption (or swelling degree) of UV-WPUA0 and hybrid coating films - Structure characterization, thermal properties and morphology characterization of UV-WPUA0 and hybridsDOI : 10.1007/s11998-012-9397-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-012-9397-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16011
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Code-barres Cote Support Localisation Section Disponibilité 14190 - Périodique Bibliothèque principale Documentaires Disponible Preparation in presence of urushiol and properties of acrylate latex with interparticle bridges / Jianhong Yang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 4 (07/2018)
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PermalinkPreparation of crosslinkable cationic polyacrylate latex and its film properties / Xueke Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
PermalinkPreparation of HMDS-modified silica/polyacrylate hydrophobic hard coatings on PMMA substrates / Chao-Ching Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)
PermalinkPreparation of hydrophobic nanosilica-filled polyacrylate hard coatings on plastic substrates / Chao-Ching Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 3 (05/2014)
PermalinkPreparation of polymer/silica composite antiglare coatings on poly(ethylene terphathalate) (PET) substrates / Chao-Ching Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 5 (09/2012)
PermalinkPreparation of UV-cured spironaphthooxazine/silica/polyacrylate photochromic hard coatings on plastic substrates / Chao-Ching Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 2 (03/2018)
PermalinkPreparation of waterborne phosphated acrylate–epoxy hybrid dispersions and their application as coil coating primer / Jianfeng Yu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 3 (05/2014)
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PermalinkRecent developments in phosphorous-containing bio-based flame-retardant (FR) materials for coatings : an attentive review in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
PermalinkReconstituted leather made using a core-shell polyacrylate adhesive / Yi Jie in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 2 (03-04/2013)
PermalinkRecycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings / Cheng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
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