Carbon black reinforced thermoplastic vulcanizates based on high impact polystyrene/styrene-butadiene-styrene block copolymer/styrene-butadiene rubber blends / S. Li in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 5 (11/2014)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 5 (11/2014) . - p. 594-601 Titre : Carbon black reinforced thermoplastic vulcanizates based on high impact polystyrene/styrene-butadiene-styrene block copolymer/styrene-butadiene rubber blends Type de document : texte imprimé Auteurs : S. Li, Auteur ; D.-Y. Wei, Auteur ; J. Zhao, Auteur ; Z.-B. Wang, Auteur Année de publication : 2014 Article en page(s) : p. 594-601 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères -- propriétés mécaniques Caoutchouc Copolymère styrène butadiène styrène Copolymères séquencés Microstructures Morphologie (matériaux) Noir de carbone Polystyrène choc Thermoplastiques Une matière thermoplastique désigne une matière qui se ramollit (parfois on observe une fusion franche) d'une façon répétée lorsqu'elle est chauffée au-dessus d'une certaine température, mais qui, au-dessous, redevient dure. Une telle matière conservera donc toujours de manière réversible sa thermoplasticité initiale. Cette qualité rend le matériau thermoplastique potentiellement recyclable (après broyage). Cela implique que la matière ramollie ne soit pas thermiquement dégradée et que les contraintes mécaniques de cisaillement introduites par un procédé de mise en forme ne modifient pas la structure moléculaire. Vulcanisation Index. décimale : 668.9 Polymères Résumé : Thermoplastic vulcanizates (TPVs) based on high impact polystyrene (HIPS)/styrene-butadiene-styrene block copolymer (SBS)/styrene-butadiene rubber (SBR) blends were prepared by dynamic vulcanization, with the TPVs being reinforced by carbon black (CB). Experimental results indicated that mechanical properties of dynamically vulcanized HIPS/SBS/SBR blends were enhanced remarkably by the incorporation of CB. The fracture surface morphology of the reinforced HIPS/SBS/SBR/CB TPVs was relatively flat. The Mullins effect could be observed in the stress-strain curves of HIPS/SBS/SBR TPVs and HIPS/SBS/SBR/CB TPVs during the uniaxial loading-unloading cycles. Compared with HIPS/SBS/SBR TPVs, CB-reinforced HIPS/SBS/SBR TPVs had the relatively higher stress, residual strain and internal friction loss. Note de contenu : - EXPERIMENTAL : 1. Materials - 2. Preparation of Dynamically Vulcanized HIPS/SBS/SBR/CB Blends - 3. Characterization - RESULTS AND DISCUSSION : 1. Influence of CB on the Mechanical Properties of the Dynamically Vulcanized HIPS/SBS/SBR Blends - 2. Morphology and Microstructure of Dynamically Vulcanized HIPS/SBS/SBR Blends and HIPS/SBS/SBR/CB Blends - 3. Mullins Effect of Dynamically Vulcanized HIPS/SBS/SBR Blends and HIPS/SBS/SBR/CB Blends DOI : 10.3139/217.2917 En ligne : https://drive.google.com/file/d/1lB_ZjRQsEJyCrKFyqvsGd0sGI-aLuiu1/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22225 [article]

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Developing pressure-sensitive adhesives for low-temperature applications / Alejandro C. Esquivel de la Garza in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 21, N° 7 (07/2014)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 21, N° 7 (07/2014) Titre : Developing pressure-sensitive adhesives for low-temperature applications Type de document : texte imprimé Auteurs : Alejandro C. Esquivel de la Garza, Auteur Année de publication : 2014 Langues : Américain (ame) Catégories : Adhésifs -- Emballages Adhésifs sensibles à la pression Copolymère styrène butadiène styrène Copolymère styrène isoprène styrène Etiquettes Rubans adhésifs Transition vitreuse Index. décimale : 668.3 Adhésifs et produits semblables Résumé : FINAT defines low-temperature adhesion as the ability of pressure-sensitive coated material to adhere at temperatures below 5°C. Today, many applications require adhesion that must be maintained at temperatures of -25°C or lower. One of the main characteristics of pressure-sensitive adhesives (PSAs) is their viscoelastic character, which allows optimal mobility for wetting substrate surfaces in order to bond and obtain maximal adhesion, while absorbing energy as viscoelastic deformation to maintain an effective bonding. Viscoelastic character of an adhesive is given by the elastomeric polymer present in its formulation. PSAs used in applications like tapes and labels for frozen food packaging and other applications in cold environments require special attention for the ingredients selection and, more specifically, in the polymer selection. At temperatures below the glass-transition temperature (Tg), a polymer has a brittle consistency and loses its deformation capacity. Consequently, an adhesive made with that polymer loses its mobility and elastomeric capacity to maintain the adhesion. It is therefore important to select a polymer that will adequately maintain its elastomeric characteristics at reduced temperatures; this is a low-Tg polymer. En ligne : http://www.adhesivesmag.com/articles/93037-developing-pressure-sensitive-adhesiv [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24308 [article]

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Effect mechanism of acidification and vulcanization on SBS-modified asphalt / Feng Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 5 (2022)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 5 (2022) . - p. 559-567 Titre : Effect mechanism of acidification and vulcanization on SBS-modified asphalt Type de document : texte imprimé Auteurs : Feng Zhang, Auteur ; Lei Li, Auteur Année de publication : 2022 Article en page(s) : p. 559-567 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Asphalte Caractérisation Chromatographie sur gel Copolymère styrène butadiène styrène Matériaux -- Propriétés physiques Matériaux bitumineux Morphologie (matériaux) Polyphosphorique, Acide Rhéologie Soufre Vieillissement Index. décimale : 668.4 Plastiques, vinyles Résumé : A styrene-butadiene-styrene (SBS) modified asphalt compound was prepared by the addition of polyphosphoric acid (PPA) and sulfur. The effect of PPA and sulfur on major physical properties, including toughness and tenacity, aging resistance, and storage stability was investigated. The structural characteristics of SBS-modified (SM) asphalt, SBS/PPA-modified (SPM) asphalt, and SBS/PPA/sulfur-modified (SPSM) asphalt were investigated using scanning electron microscopy (SEM), gel filtration chromatography (GPC), and thermal analysis. It has been found that acidification prompted the clustering of SBS particles and confined the swelling of SBS, making SPM asphalt more susceptible to aging. Vulcanization changed the morphological characteristics of SBS in asphalt, improved the compatibility between SBS and asphalt, and weakened the aging susceptibility. Therefore, it is reasonable to modify SM asphalt by using PPA and sulfur together. Note de contenu : - MATERIALS AND METHODS : Materials - Sample preparation - Morphological characterization - Physical properties - Aging of asphalt - Rheological properties - GPC - Thermal analysis - RESULTS AND DISCUSSION : Morphology - Physical properties - Rheological properties - GPC analysis - The experimental curve of a sam - Thermal analysis - Table 1 : Physical properties of base asphalt - Table 2 : Pore size and effective molecular weight range - Table 3 : Physical properties of SM, SPM, SPSM asphalts - Table 4 : Mn, Mw, Pd of SM, SPM, SPSM asphalts DOI : https://doi.org/10.1515/ipp-2022-4233 En ligne : https://drive.google.com/file/d/1QUvhoIlOPwABi5t62ihU1YUuOzT-PmB-/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38330 [article]

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High barrier sustainable co-polymerized coatings / Lokendra Pal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 4 (12/2008) . - p. 479-489 Titre : High barrier sustainable co-polymerized coatings Type de document : texte imprimé Auteurs : Lokendra Pal, Auteur ; Margaret K. Joyce, Auteur ; Paul D. Fleming, Auteur ; Stéphanie A. Cretté, Auteur ; Charles Ruffner, Auteur Année de publication : 2008 Article en page(s) : p. 479-489 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile Cartonnages Copolymère styrène butadiène styrène Gaz Matériaux -- Propriétés barrières Perméabilité Polyacryliques Polymérisation Revêtements protecteurs Vapeur d'eau Index. décimale : 667.9 Revêtements et enduits Résumé : The goal of this project was to determine the most promising co-polymerized (COP) coating for paperboard for protection against gas and water vapor transmission. The driving force for this was to create a coating that will significantly slow the permeation of water and water vapor through the paperboard, while retaining its mechanical properties. This was accomplished by creating high barrier co-polymerized coatings. This study focuses on the use of modified high shape factor engineered (HSFE) clays. In this study, acrylic co-monomers have been polymerized in the presence of three different, finely dispersed HSFE clays, to prepare the co-polymerized coatings. The wet coating structure was studied using Brookfield and Hercules Hi-Shear viscometers, water retention, and dispersion stability. The dry coating structure was studied using WYKO White Light Interferometry and burn out tests. The cylindrical laboratory coater (CLC)-coated samples were then tested for gas and water vapor permeability. Additionally, the optical and surface properties were determined. The CLC-coated board samples showed almost zero gas permeability and a significant reduction in water vapor transmission rate (water vapor permeability). The water vapor permeability was reduced up to 90% reflecting a one order of magnitude decrease in comparison to a commercially coated sample. The co-polymerized coating with high shape factor and thinner platelet clay displayed the lowest water vapor permeability and the best optical and surface properties, thereby making it the most promising barrier coating for solid bleached sulfate paperboard. DOI : 10.1007/s11998-008-9101-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9101-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3475 [article]

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Improving adhesion of high vinyl (SVS) polymers using modified diblocks / D. F. Graves in ADHESIVES AGE, Vol. 40, N° 12 (11/1997)  

[article]  inADHESIVES AGE > Vol. 40, N° 12 (11/1997) . - p. 51-55 Titre : Improving adhesion of high vinyl (SVS) polymers using modified diblocks Type de document : texte imprimé Auteurs : D. F. Graves, Auteur ; D. D. Tondra, Auteur Année de publication : 1997 Article en page(s) : p. 51-55 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression Adhésifs thermofusibles Copolymère styrène butadiène styrène Copolymères séquencés Diméthylacrylamide Vinylpyridine Index. décimale : 668.3 Adhésifs et produits semblables Résumé : This study again shows that the adhesion of the new high vinyl block polymers (SVS) to non-polar substrates can be improved by adding diblock to the PSA mixture. Although work at still lower molecular weight needs to be done, it was shown that a diblock at about 40K is a better modifier than a higher MW diblock (100K). It was also shown that without vinylpyridine in the diblock structure, the all initial charge polymers (tapered blocks) were better than the sequential monomer addition (true blocks). Polar functionality, in general, improved adhesion to the tested substrates. In this study the functional groups were always blocked on the chain ends, either as a single unit or in the case of dimethylacrylamide (DMA) or vinylpyridine (VP), a low molecular weight block. Simple termination with an OH group seemed to work best for improving quick stick and adhesion to PP when placed at the end of an S/B tapered block structure. Also, as the level of either DMA or VP was increased, the adhesion improved. A future study will look at higher amounts of these two monomers. Adhesion to other subtrates would most likely be improved by the addition of different functional groups, such as alkoxysilane end-groups improving adhesion to glass. This will also be the subject of a future study. The introduction of an ionic network into the PSA from the quaternization of the VP blocks also showed some potential for improving adhesion. Again, more work is needed in this area with additional substrates. Note de contenu : - EXPERIMENTAL : Diblocks - Formulations - Sample preparation - TESTING : Quick stick 90° angle to stainless steel (SS) - 180° peel adhesion to PE or PP En ligne : https://drive.google.com/file/d/1maYZljfGuzeSJENMxHmBSk6GfBJGX9jB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20463 [article]

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Influence des conditions climatiques sur un capteur d'allongement souple, compatible textile / C. Cochrane in MATERIAUX & TECHNIQUES, Vol. 97, N° 1 (2009)  

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Morfologia y propiedades termomecanicas de mezclas de copolimeros tribloque de estireno-butadieno-estireno con polipropileno isotactico / Gloria Gallego Ferrer in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 1 (10/1998)

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Packaging Productivity / Martha Belem Mendieta in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 17, N° 3 (03/2010)  

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Physical analysis of contact adhesive failures / Ray L. Hauser in ADHESIVES AGE, Vol. 37, N° 13 (12/1994)  

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Preparation and evaluation of amphiphilic polymer as fouling-release coating in marine environment / Peiqing Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)  

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Resins for non-woven hot melts / Chrétien Donker in ADHESIVE TECHNOLOGY, Vol. 16, N° 1 (03/1999)

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Rhéologie de mélanges SBS et huile de pétrole / F. Martinez-Boza in LES CAHIERS DE RHEOLOGIE, Vol. XVII, N° 1 (10/2000)

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Rhéologie et microstructure des liants bitumeux / F. Martinez-Boza in LES CAHIERS DE RHEOLOGIE, Vol. XVII, N° 1 (10/2000)

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Utilisation des copolymères blocs styréniques / Sandrine Averlant in CAOUTCHOUCS & PLASTIQUES, N° 717 (10/1992)

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