Aller sur edunet
Accueil
Détail de l'auteur
Auteur Madhu Bajpai |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la rechercheAntifouling paints in marine coatings : a review / Firdous Habib in PAINTINDIA, Vol. LIX, N° 11 (11/2009)
Titre : Antifouling paints in marine coatings : a review Type de document : texte imprimé Auteurs : Firdous Habib, Auteur ; Madhu Bajpai, Auteur Année de publication : 2009 Article en page(s) : p. 77-91 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Marines (peinture)
PolydiméthylsiloxaneLe polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones.
Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone.
Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK).
La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones.
Revêtements antisalissures:Peinture antisalissures
Salissures marines
TributylétainIndex. décimale : 667.9 Revêtements et enduits Résumé : The main objective of this review is to provide a brief view on the merits, demerits, effects and uses of antifouling paints. The imminent ban of environmentally harmful tributyltin (TBT) and tin based paint products has been the cause of a major change in the antifouling industry. Fouling organisms such as barnacles, tube worms and algae, which accumulate on any submerged surface, greatly increase drag, and reduce speed and fule consumption of the vessel other mechanical damages have also been reported due to fouling. A variety of paints were developed in mid 1800s, which were generally based on copper oxide arsenic and mercuric oxide as popular antifoulants. Antifoulants are one of the many additives usually incorporated within the topcoat paint of marine protective coating system. Today's marine coatings must provide protection and performanceunder extremely harsh conditions. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8325
in PAINTINDIA > Vol. LIX, N° 11 (11/2009) . - p. 77-91[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011952 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Comparative study and film performance of epoxy polyester and epoxy polyester hybrids powder coating Type de document : texte imprimé Auteurs : Vipin Shukla, Auteur ; Madhu Bajpai, Auteur ; Mudit Goyal, Auteur ; Dharmendra Singh, Auteur ; Mahendra Singh, Auteur Année de publication : 2004 Article en page(s) : p. 41-44 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Thermally curable powder coatings are widely used for coating metallic components due to the unique combination of technological, environmental and economic benefits. This paper describes various physical and chemical properties of different powder coating films like epoxy, pure polyester and epoxy polyester hybrid. In this paper an attempt is made to correlate the properties of different powder coating films and also the influence of type of resins are discussed. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12057
in PAINTINDIA > Vol. LIV, N° 1 (01/2004) . - p. 41-44[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 000449 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Film characteristics of novolac based epoxy ester films - I Titre original : Nigerseed oil epoxy esters Type de document : texte imprimé Auteurs : Madhu Bajpai, Auteur ; Arti Sharma, Auteur Année de publication : 1996 Article en page(s) : p. 27-32 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture Liant 'Epoxyde résine' Novolaque 'Corps gras végétal' Préparation 'Propriété physique' chimique' Feuil 'Résistance eau' base' 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : Epoxy esters were prepared from nigerseed oil fatty and novolac based epoxy resins. the novolac used for preparing the epoxy resins were prepared using different proportions of phenol and formaldehyde. The film characteristics of novolac based epoxy esters of different oil length were studied and comparison was made with the film characteristics of epoxy esters prepared from bisphenol-A based epoxy resin.
It was observed that all the films had dried within 24 hours and were tack-free the desired film forming characteristics. All the epoxy ester films passed the flexibility test on 1/4 inch mandrel. The scratch hardness of the films decreased with the increasing oil length irrespective of the phenolic source of the epoxy resin. The water resistance and alkali resistance of the epoxy ester films showed a definite pattern vis a vis the epoxy esters prepared from novolac and bisphenol-A. While the water resistance of the epoxy esters improved with the increasing oil length of the esters, yhe alkali resistance decreased with the increasing oil length. Both alkali resistance and water resistance improved with the higher proportion of formaldehyde in the novolac used as starting a material for the preparation of epoxy ester. Both the alkali and water resistance of the novolac based epoxy esters were superior to the epoxy esters based on bisphenol-A. All the epoxy ester films showed very goog acid-resistance.Note de contenu : - Experimental : Preparation of novolac resins - Preparation of epoxy resins - Preparation of epoxy esters - Preparation of coatings - Evaluation of film characteristics
- Results and Discussion : Drying time - Scratch hardness - Flexibility - Water rsistance - Alkali resistance - Acid resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13483
in PAINTINDIA > Vol. XLVI, N° 5 (05/1996) . - p. 27-32[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 006504 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Film characteristics of novolac based epoxy ester films-II Type de document : texte imprimé Auteurs : Madhu Bajpai, Auteur ; Arti Sharma, Auteur Année de publication : 1997 Article en page(s) : p. 53-58 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture Liant 'Epoxyde résine' Novolaque 'Ester polymère' 'Corps gras végétal' 'Nicotiana tabacum' 'Propriété physique' chimique' mécanique' Feuil Solanaceae Dicotyledones Angiospermae Spermatophyta Index. décimale : 667.9 Revêtements et enduits Résumé : Tobacco seed oil fatty acids were used to esterify novolac based epoxy resins. The novolac epoxy resins werepreparedby using three different ratios ofphenol to formaldehyde. The films of prepared epoxy esters with different oil lengths, were evaluated for various performance tests and were compared with those of bisphenol-A based epoxy resin. All the films dried faster and took a maximum of 13 hrs to dry tack free. Epoxy esters prepared from novolac epoxy resins having higher phenol to formaldehyde ratios showed better scratch hardness than those with lower ratios. Also, epoxy esters with shortest oil length possessed best scratch hardness. All the films were highly flexible. The studies showed that alkali resistance of epoxy esters is slightly better than water resistance. The water resistance increased with the increase in the oil length and also with increase in the phenol to formaldehyde ratio in novolac epoxy resins. In the case of alkali resistance, it increased with the increase in phenol - formaldehyde ratio and it decreased with the increase in oil length. The acid resistance of all the samples were excellent. Note de contenu : - EXPERIMENTAL - Preparation of novolac resins - Preparation of epoxy resins - Preparation of epoxy esters - Preparation of coating samples - Evaluation of film characteristics
- RESULTS AND DISCUSSION - Drying time - Scratch hardness - Flexibility - Water resistance - Alkali resistance - Acid resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13312
in PAINTINDIA > Vol. XLVII, N° 8 (08/1997) . - p. 53-58[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 006466 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Radiation curing and film properties of modified epoxy resins - a review Type de document : texte imprimé Auteurs : Madhu Bajpai, Auteur ; V. Shukla, Auteur Année de publication : 2001 Article en page(s) : p. 53-57 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Rayonnement UV' Durcissement 'Modification chimique' 'Epoxyde résine' Liant Peinture 'Matériau revêtement' Index. décimale : 667.9 Revêtements et enduits Résumé : Normally epoxy resin has versatile applications in coating, adhesives and electrical industries by chemical curing. The other alternative emerging field in the area of curing is by radiation, for which U. V., E.B., visible, microwave, I.R., X-ray, γ-ray are used. Because U.V. curing contributes to air pollution control, conserves energy, improves cure speed and reduces capital cost by space saving and economical equipment purchase, it has become the preferred technology in many industrial coating, ink and adhesives applications. Note de contenu : TYPES OF EPOXY RESINS : Bisphenol-A based epoxy resin - Other glycidyl based epoxy resins - Glycidyl ethers of aliphatic diols - Aromatic glycidyl amines - Epoxydised cycloaliphatic olefins - Glycidyl esters
NOVALIC RESINS : Ingredients of novalac (Phenol and substituted phenol, formaldehyde, acid catalyst, preparation of novalac)
RADIATION CURING : Material (ingredients) - Oligomers (resins or binder) - Monomers - Cross linking monomers - Non-corsslinking monomers - Photoinitiators - Mechanism
ADVANTAGES OF UV-CURING : Application of UV-curing (For leather, for metals, for printing inks, for plastics, for paper, for wood)Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12644
in PAINTINDIA > Vol. LI, N° 12 (12/2001) . - p. 53-57[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001273 - Périodique Bibliothèque principale Documentaires Disponible
Permalink
Permalink
Permalink
Permalink
Permalink
