Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends / Tetsuto Kajiyama in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 4 (08/2018)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXIII, N° 4 (08/2018) . - p. 564-573 Titre : Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends Type de document : texte imprimé Auteurs : Tetsuto Kajiyama, Auteur ; T. Yasuda, Auteur ; T. Yamanaka ; K. Shimizu ; T. Shimizu ; E. Takahashi ; A. Ujiie ; K. Yamamoto ; T. Koike ; Y. Nishitani Année de publication : 2018 Article en page(s) : p. 564-573 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères Composites polymères Composites thermoplastiques -- Moulage par injection Composites thermoplastiques -- Propriétés mécaniques Copolymère styrène-éthylène-butadiène Essais dynamiques Matières plastiques -- Extrusion Mica Microscopie électronique à balayage Polyéthylène Polypropylène Taille des particules Index. décimale : 668.4 Plastiques, vinyles Résumé : The mechanical properties of polyethylene (PE)/polypropylene (PP)/styrene-ethylene/butylene-styrene (SEBS)/mica composites were investigated as a model composition. Four types of mica with different particle sizes and different aspect ratios were used. These composites were extruded by a twin-screw extruder and subsequently injection molded, and their mechanical properties, including their tensile, bending, and impact properties were evaluated. The addition of mica to PE/PP/SEBS effectively improved its mechanical properties; the addition of SEBS as a compatibilizer likewise enhanced the mechanical properties compared with those of PE/PP composites without SEBS. The use of larger average particle size and higher aspect ratio mica, such as M-35, M-27, and P-33, effectively increased the tensile and bending properties of the PE/PP/SEBS/mica composites. The morphologies of the composites with an added mica as observed by scanning electron microscopy, showed good dispersion between the matrix polymer and the mica. Note de contenu : - EXPERIMENTS : Materials - Mixing of materials - Molding of composites - Mechanical tests of composites - SEM observations - RESULTS AND DISCUSSION : Effect of addition of SEBS and mica on mechanical properties - Effect of the addition of four types of mica on the tensile, bending, and impact properties - Morphology of PE/PP, PE/PP/SEBS, PE/PP/mica and PE/PP/SEBS/mica composites DOI : 10.3139/217.3568 En ligne : https://drive.google.com/file/d/1iVXN53SJLd6VGni0y4QO5Gy7sgVJjdrP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30896 [article]

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Water-repellent coating for mobile phone microphones / G. Yamauchi in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B4 (12/2005) . - p. 281-283 Titre : Water-repellent coating for mobile phone microphones Type de document : texte imprimé Auteurs : G. Yamauchi, Auteur ; N. Funakoshi, Auteur ; T. Shimizu, Auteur ; Y. Yasuno, Auteur ; Y. Riko, Auteur Année de publication : 2005 Article en page(s) : p. 281-283 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane Imperméabilisation Liants Nanoparticules Perfluoropolyéther Photocatalyse Polyfluorure de vinylidène Polytétrafluoréthylène Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : A water-repellent coating material has been developed which is composed of low molecular-weight poly(tetrafluoroethylene) (PTFE) particles and anatase-type photocatalytic TiO2 nano particles, fluoro-oil (perfluorinated polyether) and a polyvinylidene fluoride binder. The presence of these PTFE particles in the coating material makes it possible for the water-repellency properties of this material to be improved by achieving a water contact angle of more than 150�. The photocatalytic activity of the TiO2 particles incorporated in the water-repellent coating inhibits the surface contamination which previously had caused the deterioration of the water-repellent properties. This water-repellent coating can be applied to mobile phone microphones. The water repellency of the electret condenser microphone improves the durability of the mobile phone. Note de contenu : - INTRODUCTION : Material preparation - WATER-REPELLENT PROPERTY - APPLICATION TO MOBILE PHONE MICROPHONES : Basic structure of ECM - Acoustic characteristics DOI : 10.1007/BF02699585 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699585.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5408 [article]

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