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Development of helicopter blade coatings / Yosif Golfman in JEC COMPOSITES MAGAZINE, N° 43 (09/2008)
[article]
Titre : Development of helicopter blade coatings Type de document : texte imprimé Auteurs : Yosif Golfman, Auteur Année de publication : 2008 Article en page(s) : p. 56-61 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Résistance érosion' 'Propriété thermique' 'Caoutchouc thermoplastique' chimique' 'Diène copolymère' 'Fibre minérale' 'Etude expérimentale' Aubage Rotor Hélicoptère Application Polyester 'Conductivité 'Uréthanne élastomère' 'Moulage pultrusion' hydrolyse' mécanique' 'Butadiène synthétique' 'Matériau renforcé fibre' carbone' composite' 'Revêtement protecteur' Index. décimale : 668.4 Plastiques, vinyles Résumé : Naval helicopters and vertical/short take-off and landing aircraft such as the V-22 Osprey operate in hostile environments. The leading edges of their rotor blade are protected with erosion-resistant materials to avoid rapid deterioration in sandy or dusty landing zones and severe sand, rain, or ice storms. The subject of this article is the search for a class of polymers offering superior erosion resistance and de-icing capability. Note de contenu : - The problem
- Reinforced thermoplastic materials
- CombatShield TM
- Polybutadiene resins
- Hydroxyl functionality
- Hydrolytic stability
- High hydrophobicity
- Low-temperature flexibility
- Adhesion properties
- Airthane PET-91A-based elastomers
- Thermally-conductive materials
- Technological process
- Layer 1 (erosion resistance)
- Layer 2 (thermal conductivity)
- Layer 3 (electrical conductivity)
- Layer 4 (adhesion)
- Conductive resin formulation
- Experimental conformation workPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14033
in JEC COMPOSITES MAGAZINE > N° 43 (09/2008) . - p. 56-61[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010655 - Périodique Bibliothèque principale Documentaires Disponible A statistical study of hydrolytic stability in amine neutralized waterborne polyester resins as a function of monomer composition / Travis E. Jones in PAINTINDIA, ANNUAL 1995 (1995)
[article]
Titre : A statistical study of hydrolytic stability in amine neutralized waterborne polyester resins as a function of monomer composition Type de document : texte imprimé Auteurs : Travis E. Jones, Auteur ; Julia M. McCarthy, Auteur Année de publication : 1995 Article en page(s) : p. 93-108 Langues : Anglais (eng) Tags : 'Ester polymère' Hydrolyse 'Résistance hydrolyse' 'Effet composition' Monomère Neutralisation Amine 'Etude statistique' 'Dispersion aqueuse' 'Peinture eau' Liant Formulation Index. décimale : 667.9 Revêtements et enduits Résumé : Reversibility of the esterification reaction has limited the use of polyester resins in waterborne coating systems. As with other polyester resin properties, the rate of hydrolysis can be modified by choice of monomer. The objective of this study is to demonstrate changes in hydrolytic stability in waterbone polyesters as a function of change in glycol and diacid composition. In the glycol section of the study, BEPD and HPHP were compared. For the diacid section, adipic acid, isophthalic acid, and 1,4-CHDA were examined. Aqueous dispersions were subjected to storage at both ambient and elevated temperature. Response factors measured over time included molecular weight, pH, appearance, and change in properties of coatings made from the aged dispersions. Results are discussed with reference to accepted hydrolysis hydrolysis rate theories. Results show that inductively stabilized, hydrophobic monomers such as 1,4-CHDA and BEPD produce the most stable waterborne polyesters of the glycols and diacids studied. Note de contenu : - Experimental
- Preparation of resin dispersions
- Stability testing
- Glycol study design
- Preparation of resin dispersions
- Stability testing
- Results
- Diacid study dipersion stability
- Glycol study dispersion stability
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13608
in PAINTINDIA > ANNUAL 1995 (1995) . - p. 93-108[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006460 - Périodique Bibliothèque principale Documentaires Disponible