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Auteur L. Zhang |
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Ajouter le résultat dans votre panier Affiner la rechercheBlank design and fiber orientation distribution during compression molding of GMT / L. Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. XIV, N° 4 (12/1999)
Titre : Blank design and fiber orientation distribution during compression molding of GMT Type de document : texte imprimé Auteurs : L. Zhang, Auteur ; G. Dai, Auteur Année de publication : 1999 Article en page(s) : p. 350-357 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : Molding - Glass mat thermoplastics (GMT) have the superior property/price ratio, they can be used in many industrial aspects. In this paper, through a 100 mm-deep mold, the glass mat distribution, fiber orientation and mechanical properties of the part were studied under different blank designs. In conclusion, (1) Blank design has effect on the mat distribution and fiber orientation, and finally on the mechanical properties of the part. To a part, there is an optimum blank design, which will not greatly decrease the mechanical properties of the sheets in the final part. (2) In compression molding, interlaminar slippage, blank ejection and resin solidification result in mat distribution and fiber orientation. Note de contenu : - EXPERIMENT : Materials - Equipment - Forming procedure - Blank design
- RESULTS AND DISCUSSION : Closing force - Glass fiber orientation and mat distribution - Mechanical propertyDOI : 10.3139/217.1541 En ligne : https://drive.google.com/file/d/1OCLOuFRo8nOzvTrTMA4BYtC_DxBQmOeF/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16124
in INTERNATIONAL POLYMER PROCESSING > Vol. XIV, N° 4 (12/1999) . - p. 350-357[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001010 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Syntheses and properties of new double-tail trisiloxane surfactants with both hydrolysis resistance and high spreading ability Type de document : texte imprimé Auteurs : Z. Peng, Auteur ; Y. Liufu, Auteur ; L. Zhang, Auteur ; J. Chen, Auteur Année de publication : 2011 Article en page(s) : p. 148-153 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Double queue de trisiloxane' 'Capacité propagation' résistance à l'hydrolyse' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : New double-tail trisiloxane surfactants of the general formula R1NR2CH2CH(OH)CH2O(CH2CH2O)xCH3 (R1=Me3SiOSiMe(CH2)3 · OSiMe3; R2=Me3SiOSiMe((CH2)3OCH2CH(OH)CH2)OSiMe3; x= 8.4, 12.9, 17.5, 22) have been synthesized. The spreading ability (SA) values of the double-tail trisiloxane surfactants solutions (1.0 × 10–3 mol/L) with average ethoxy units of 8.4, 12.9 and 17.5 on ficus microcarpa leave surface are more than 9 within 3 minutes, and their SA values on the parafilm surface are over 15 within 10 minutes at a concentration of 5.0 × 10–3 mol/L. In alkaline environment (pH = 10.0) the hydrolysis resistant ability (HRA) of the double-tail trisiloxane surfactant containing average ethoxy units of 8.4 with the surface tension of aqueous solution (1.0 × 10–3 mol/L) of less than 23 mN/m over 170 days, is far better than the others’. It is suggested that a more flexible spacer between hydrophobic groups and hydrophilic groups in double-tail trisiloxane surfactants molecules, not only can improve their SA on low-energy solid surfaces, but also improve their HRA. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11124
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 2/2011 (03-04/2011) . - p. 148-153[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012916 - Périodique Bibliothèque principale Documentaires Disponible
