Accelerated drying of water-dispersible polyurethane blends / Joseph P. Labukas in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 2 (03/2014)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 2 (03/2014) . - p. 217-229 Titre : Accelerated drying of water-dispersible polyurethane blends Type de document : texte imprimé Auteurs : Joseph P. Labukas, Auteur ; John A. Escarsega, Auteur ; Dawn M. Crawford, Auteur Année de publication : 2014 Article en page(s) : p. 217-229 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages polymères Analyse mécanique dynamique Camouflage (science militaire) Photoamorceurs (chimie) Polyaddition Polyisocyanates Polymères -- Propriétés thermomécaniques Polyols Polyuréthanes Résistance chimique Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Mixtures of water-dispersible isocyanate and polyol-terminated oligomers were blended with methacrylate-terminated urethanes and a water-dispersible photoinitiator to accelerate the dry time of thin polymer films. Thermomechanical properties of the polyurethane blends were measured using dynamic mechanical analysis. Kinetics of the ultraviolet-initiated radical polymerization reaction and the polyol/isocyanate addition reaction were monitored using attenuated total reflectance-Fourier transform infrared spectroscopy. Note de contenu : - EXPERIMENTAL : Chemicals - Film formation - Dynamic mechanical analysis - Attenuated total reflectance-Fourier Transform infrared spectroscopy - RESULTS AND DISCUSSION : UV-activated film formation - Crosslinking and film development - Exposure of CARC to UV - Crosslinked polyurethane films - Functional group evolution during curing DOI : 10.1007/s11998-013-9536-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9536-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21166 [article]

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An experimental study of weave pattern effect on the mechanical and dynamic behavior of composite laminates / Rafik Halimi in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 2 (2024)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 39, N° 2 (2024) . - p. 143-151 Titre : An experimental study of weave pattern effect on the mechanical and dynamic behavior of composite laminates Type de document : texte imprimé Auteurs : Rafik Halimi, Auteur ; Fares Mohamed Laid Rekbi, Auteur ; Oussama Mimouni, Auteur ; Özkan Özbek, Auteur ; Wahiba Djerir, Auteur ; Amine Rezzoug, Auteur Année de publication : 2024 Article en page(s) : p. 143-151 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse des défaillances (fiabilité) Analyse mécanique dynamique Composites à fibres de verre Composites à fibres de verre -- Propriétés mécaniques Composites à matrice organique Epoxydes Stratifiés Tissage Tissés Index. décimale : 668.4 Plastiques, vinyles Résumé : The current work aimed at investigating experimentally the weave pattern effects on the mechanical and dynamic behaviors of polymer matrix composite laminates. The laminates composed of three different weave types (plain, satin, and twill) of woven glass fabric and STR Medapoxy epoxy resin were fabricated via vacuum molding. Static bending experiments were applied to determine the influence of the weave pattern on the mechanical characteristics of the samples. The failure behaviors of the samples were also examined by optical and Scanning Electron Microscopy (SEM) analyses. Additionally, Dynamic Mechanical Analysis (DMA) in the temperature range of 25–200 °C at 1 Hz frequency was conducted to investigate the dynamic characteristics of the samples. It was found that the samples having satin weave type had the best flexural modulus followed by the plain and twill weaves. However, the twill weave laminates exhibited better storage modulus at glass transition temperature values (T g) compared to the others. Also, an increase of 3.3 °C in glass transition temperature was observed compared to that of neat resin. This was attributed to the better fiber/matrix adhesion and the lower molecular mobility in the polymer chain by the addition of glass twill fibers. Note de contenu : - MATERIALS AND METHODS : Materials - Manufacturing process - Mechanical characterization - RESULTS AND DISCUSSION : Mechanical response - Failure surface examination - DYNAMIC MECHANICAL PROPERTIES : Storage modulus - Damping factor DOI : https://doi.org/10.1515/ipp-2023-4435 En ligne : https://drive.google.com/file/d/16C9nA5m4B-S0oHIYY5ElHQ2xXwz6JtFY/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40858 [article]

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Application of polycarbonate diol containing hindered urea to polyurethane-based clearcoats for tuning of scratch-healing properties / Dong Geun Lee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 4 (07/2020) . - p. 963-976 Titre : Application of polycarbonate diol containing hindered urea to polyurethane-based clearcoats for tuning of scratch-healing properties Type de document : texte imprimé Auteurs : Dong Geun Lee, Auteur ; Sujin Sung, Auteur ; Dae Geun Oh, Auteur ; Young Il Park, Auteur ; Sang-Ho Lee, Auteur ; Jin Chul Kim, Auteur ; Seung Man Noh, Auteur ; Hyun Wook Jung, Auteur Année de publication : 2020 Article en page(s) : p. 963-976 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse mécanique dynamique Nanotechnologie Polycarbonates Polymères autoréparants Polyuréthanes Rayures Revêtement autoréparant:Peinture autoréparante Rhéologie Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : Newly synthesized polycarbonate diols containing hindered urea (PCD-HUs) were employed to modify the scratch-healing properties of conventional two-component clearcoats. To elucidate their contributions to the crosslinking properties of the coatings under conventional thermal curing (150°C), the real-time rheological properties of the clearcoat mixtures were measured using a rotational rheometer in the small-amplitude oscillatory shear mode. A dynamic mechanical analysis was carried out to compare the thermomechanical properties of the cured clearcoat free films. PCD-HU, a key component for the tuning of the scratch-healing, was further identified by analyzing the clearcoat layer cured over a phosphated metal substrate with undercoats such as primer and basecoat as a precoated metal (PCM) sheet. Elastic recovery and scratch profiles of the outermost clearcoat layer in the PCM sheet were acquired through nano-indentation and nano-scratch tests by gradually increasing the quantitative normal force. Finally, the healing patterns of the scratches on various clearcoat layers at a certain normal force were visualized by three-dimensional and one-dimensional cross-cut images using atomic force microscopy under specified temperature and healing time conditions. The surface durability provided by the PCD-HU in the clearcoat layer was confirmed by repeated scratching and healing tests on the same surface positions. Therefore, the coating layer containing HU, which possessed similar surface mechanical properties to those of conventional references, exhibited better scratch-healing performance. Note de contenu : - EXPERIMENTAL METHODS : Preparation of PCD-HUs - Preparation of clearcoat coatings and their property measurements - Elastic recovery and scratch-healing properties of the clearcoat layers - RESULTS AND DISCUSSION : Real-time rheological properties of the clearcoats during the thermal curing - Thermomechanical properties of the clearcoat free films - Indentation and related elastic recovery properties of the cured clearcoat layers in the PCMs - Scratch properties of the cured clearcoat layers in the PCMs - Scratch-healing pattern analysis by AFM - Durability features through repeated scratching and healing procedures DOI : https://doi.org/10.1007/s11998-019-00316-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00316-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34384 [article]

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Aqueous polyurethane dispersions for adhesive applications / Joaquin Julia in ADHESIVES AGE, Vol. 37, N° 5 (05/1994)  

[article]  inADHESIVES AGE > Vol. 37, N° 5 (05/1994) . - p. 26-31 Titre : Aqueous polyurethane dispersions for adhesive applications Type de document : texte imprimé Auteurs : Joaquin Julia, Auteur ; Daniel Salvatella, Auteur ; Jesus Lope, Auteur Année de publication : 1994 Article en page(s) : p. 26-31 Langues : Américain (ame) Catégories : Adhésifs -- Propriétés mécaniques Adhésifs en phase aqueuse Analyse mécanique dynamique Chlorure de polyvinyle Elastomères Essais de pelage Polyuréthanes Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The evolving market and the need to offer competitive raw materials for new production processes have led Merquinsa to develop a polyurethane dispersion called DEP 170 with a solids content of 50%. Note de contenu : - POLYURETHANE ELASTOMERS - POLYURETHANE DISPERSIONS : Prepolymer mixing process - MAKING COMPARISONS : Hot tack - Bond strength over - PVC/PVC peel strength En ligne : https://drive.google.com/file/d/1znGXPAPlF1ehUhMQYHpwXGsHDlAin_jB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20823 [article]

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Bio-based hybrid polymers from vinyl ester resin and modified palm oil : synthesis and characterization / A. Fakhari in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 1 (03/2017)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 1 (03/2017) . - p. 20-25 Titre : Bio-based hybrid polymers from vinyl ester resin and modified palm oil : synthesis and characterization Type de document : texte imprimé Auteurs : A. Fakhari, Auteur ; A. R. Rahmat, Auteur ; M. U. Wahit, Auteur ; R. Arjmandi, Auteur Année de publication : 2017 Article en page(s) : p. 20-25 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique Caractérisation Copolymère vinyle ester Epoxydation Huile de palme et constituants Matières plastiques -- Propriétés mécaniques Microscopie électronique à balayage Polyaddition Polymères -- Synthèse Thermodurcissables Index. décimale : 668.4 Plastiques, vinyles Résumé : A series of bio-based hybrid thermosets composed of maleinated acrylated epoxidized palm oil (MAEPO) and vinyl ester resin (VE) were produced using free radical-induced crosslinking. The amount of petroleum-based resin which was replaced by bio-resin (MAEPO) was varied from 5 to 20 wt%. The structure of the polymer systems was investigated by scanning electron microscopy and dynamic mechanical analysis. The mechanical properties of the VE/MAEPO resins were studied using tensile, flexural and impact tests. The result obtained from structural analysis revealed that for the polymer hybrids with up to 20 wt% bio-resin content, there is good compatibility between MAEPO and VE as no phase separation was observed for these systems. The prepared eco-friendly bio-based thermosetting resins exhibit remarkable improvement in toughness parameters, such as ductility and impact strength, thereby showing potential for use in composites and nanocomposites applications. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the bio-based VE/MAEPO resins - Testing and characterization - RESULTS AND DISCUSSION : Scanning electron microscopy (SEM) - Mechanical properties of MAEPO/VE polymer resins - Dynamic mechanical analysis DOI : 10.3139/217.3166 En ligne : https://drive.google.com/file/d/1ROvMLEhuXweTSFkB1YoJSfDrTsfse9th/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27975 [article]

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Bio-based pultruded profiles including graphene for building envelopes / Sergio Fita in JEC COMPOSITES MAGAZINE, N° 101 (11-12/2015)

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Calcul dynamique en régime transitoire / Ludovic Soufflet in CAOUTCHOUCS & PLASTIQUES, N° 821 (04/2004)

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Catalyzed crosslinking of highly functional biobased epoxy resins / Thomas J. Nelson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)  

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Characterization of the ageing of an epoxy resin using high temperature nanoindentation / Bruno Passilly in MATERIAUX & TECHNIQUES, Vol. 107, N° 2 (2019)  

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Characterizing high-tech composites by means of thermal analysis / Gabriele Kaiser in SAMPE JOURNAL, Vol. 50, N° 1 (01-02/2014)

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A comparison of low temperature softness of leather lubricated with various types of fatliquor / Zhengjun Li in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 4 (07-08/2014)  

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Contribution of aramid fibers to the circular economy in CHEMICAL FIBERS INTERNATIONAL, Vol. 70, N° 4 (12/2020)  

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Correlations between the hysteresis parameters determining the rolling resistance in rubber composites / Tiwen Xu in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 1 (03/2020)  

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Damping, thermal and mechanical analyses of polycarbonate/cerium oxide composites for structural applications / R. Karuppasamy in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 3 (07/2019)  

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Designing silicone PSAs / Roy M. Griswold in ADHESIVES AGE, Vol. 45, N° 9 (09/2002)  

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Détermination de la transition vitreuse par DMA et par d'autres techniques / Roger Soumah in CAOUTCHOUCS & PLASTIQUES, N° 705 (05/1991)  

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Determining the properties of wood plastic composites (WPC) by thermal analysis / G. Kaiser in JEC COMPOSITES MAGAZINE, N° 93 (12/2014)  

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Dynamic mechanical thermal analysis (DMTA) of leather. Part 1 : Effect of tanning agent on the glass transition temperature of collagen / S. Jeyapalina in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 6 (11-12/2007)  

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Effect of composition on performance properties in cationic UV-curable coating systems / Heather A. Nash in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)  

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Effect of compounding conditions on static and dynamic mechanical properties of high density polyethylene/ground tire rubber blends / Krzysztof Formela in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 2 (05/2014)  

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