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The right dose for the right cure / Xavier Drujon in EUROPEAN COATINGS JOURNAL (ECJ), N° 5 (05/2020)
[article]
Titre : The right dose for the right cure : Effect of acrylate monomer and oligomer selection on the properties of cured coatings Type de document : texte imprimé Auteurs : Xavier Drujon, Auteur Année de publication : 2020 Article en page(s) : p. 18-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère uréthane acrylate
Monomères
Oligomères
Revêtements -- Propriétés chimiques
Revêtements anti-adhésifs -- Séchage sous rayonnement électronique
Revêtements anti-adhésion -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : UV is by far the most common source of radiation-curing energy, and is widely used for coatings on heat-sensitive substrates. It has expanded significantly into a multiplicity of other applications, this expansion being driven by performance, economics and environmental considerations. However, EB technology can be more relevant in some high-speed and high-volume applications and can be expected to contribute substantially to the growth of radiation curing in the future. Note de contenu : - EB to boost growth of radiation curing
- Experimental : Raw materials - Equipment and method
- Reactivity
- Solvent resistance
- Higher voltage is better
- Hardness
- Double-bond conversion unexpectedly lower
- EB and UV curing of ethoxylated TMPTAS
- Hardness tails off under UV
- Fig. 1a : EB curing of UA3 (f=6) under an applied voltage of 80 kV and varying dose
- Fig. 1b : EB curing of UA2 (f=2) under and applied voltage of 80 kV and varying dose
- Fig. 2 : Hardness (Persoz) of various UAs as a function of diluting monomer and type of cure
- Fig. 3 : Hardness as a function of the wt% ethoxy in the monomer for 60/40 UA5/TMPX(EO)TA blends cured by EB and UV
- Table 1 : Acrylate-functional monomers
- Table 2 : Acrylate-functional urethane acrylate oligomers
- Table 3 : Cure of UA3 (f=6) with a dose of 30 kGy under different voltages
- Table 4 : DMA and FTIR analysis of UA4/HDDA films cured by UV and EB
En ligne : https://drive.google.com/file/d/1qZ0Hhncpnue3mOGsHUOs1fKZDf4bgjaS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34172
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5 (05/2020) . - p. 18-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21745 - Périodique Bibliothèque principale Documentaires Disponible Tuning of final performances of soybean oil-based polymer nanocomposites : effect of styryl/oil functionalized intercalant of montmorillonite reinforcer in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 2 (05/2015)
[article]
Titre : Tuning of final performances of soybean oil-based polymer nanocomposites : effect of styryl/oil functionalized intercalant of montmorillonite reinforcer Type de document : texte imprimé Année de publication : 2015 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères
Caractérisation
Charges (matériaux)
Epoxydes
Huile de soja
Matériaux hybrides
Matériaux hybrides -- Propriétés mécaniques
Matériaux hybrides -- Propriétés thermiques
Monomères
Montmorillonite
Polyaddition
Styrène
StyryleLe terme styryle désigne un groupe fonctionnel aromatique de formule brute C6H5-CH=CH–.Index. décimale : 668.4 Plastiques, vinyles Résumé : Bio-based polymeric nanocomposites were prepared via polymerization of a monomer mixture of acrylated epoxidized soybean oil (AESO) and styrene in the presence of organophilic montmorillonite (MMT) clay by in-situ free-radical polymerization technique. MMT clay was rendered organophilic by a styryl/oil functionalized intercalant which is compatible with the two matrices and able to participate in the polymerization/crosslinking reaction. The presence of styryl group in the intercalant is also thought to be an original solution to the drawback mentioned in the literature arising from higher amount of small styrene monomer molecules in the clay galleries than larger AESO molecules at high clay loadings. The current design of the intercalant is expected to allow polymer molecules grown from both AESO and styrene monomers inside the clay galleries and also from edges/surfaces of the silicate layers. In this study, a special attention was paid to the enhancement of both thermal and mechanical properties of AESO-based nanocomposites via usage of the compatible and reactive intercalant for MMT modification. The resultant nanocomposites were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The effect of increased nanoclay loading in thermal and mechanical properties was investigated by thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). The nanocomposite materials exhibited improved thermal stability and dynamic mechanical properties as compared to neat polymer. The nanocomposite with exfoliation dominant structural morphology showed the highest storage modulus around Tg which is about 480% higher than that of neat AESOPS, even with a clay content as low as 3 wt%. Note de contenu : - EXPERIMENTAL : Materials - Modification of NaMMT with cocoamine salt - Preparation of nanocomposites - Characterization
- RESULTS AND DISCUSSION : Clay modification - Properties of the nanocompositesDOI : 10.3139/217.3006 En ligne : https://drive.google.com/file/d/1PF4nWitb_srev0vLCDa8wFgN-aVnurtC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23907
in INTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 2 (05/2015)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17180 - Périodique Bibliothèque principale Documentaires Disponible UV curable acrylate monomers : Structure - activity relationship and selection criterion / R. D. Kulkarni in PAINTINDIA, Vol. LX, N° 6 (06/2010)
[article]
Titre : UV curable acrylate monomers : Structure - activity relationship and selection criterion Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; Mayur Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2010 Article en page(s) : p. 57-76 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Monomères
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : Rapid UV cure at ambient temperature of solvent free formulations delivers best economic value for applications such as computer chips, optical fiber coatings, and lithography. Vehicles for UV cure coatings use suitable combinations of oligomers and monomers. Present review covers structure, activity, and basis of selection of acrylate monomers in free radical initiated UV cure coating formulations. Some examples of commercially available mono, di, tri, tetra and higher functional acrylate monomers along with their chemical structure, typical physical properties, coating characteristics and applications have been presented Non-acrylated reactive diluents such as vinyl ethers and PVP have also been covered The influence of monomers as diluents on the viscosityofthe formulation; variation in structure-activity relationship through alkoxylation, % shrinkage during UV cure; reactivity and performance properties of coating as governed by the choice of monomer combinations; wetting and adhesion characteristics based on surface tension of monomers; the affinity of the monomers for water and oily materials depending on HLB Balance; RI―structure relationship; and durability, colour, toxicity and irritancy characteristics of monomers have been illustrated with due support by specific examples. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9836
in PAINTINDIA > Vol. LX, N° 6 (06/2010) . - p. 57-76[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012409 - Périodique Bibliothèque principale Documentaires Disponible UV curable monomers and oligomers in PSA applications / Craig Glotfelter in ADHESIVES AGE, Vol. 40, N° 3 (03/1997)
[article]
Titre : UV curable monomers and oligomers in PSA applications Type de document : texte imprimé Auteurs : Craig Glotfelter, Auteur Année de publication : 1997 Article en page(s) : p. 50-55 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Séchage sous rayonnement ultraviolet
Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Essais de pelage
Monomères
Oligomères
Réticulation (polymérisation)
Transition vitreuseIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Pressure sensitive adhesives (PSAs) are found everywhere in our society. Solventborne PSA formulations traditionally were based on modified rubber chemistry. Today they are being replaced by low-VOC, fast-curing systems such as UV-cured PSAs.
This article describes current water-based and 100% solid UV-curable PSAs and their properties. Shear, peel strengh and tack properties are reported for systems with various oligomer and monomer contents.
The PSAs were prepared to minimize premature polymerization and evaluated by three test methods: rolling ball tack (RBT), 180° peel and shear. The article describes sample preparation, test methods and significant findings. These findings reveal a correlation between crosslink density and shear performance, tackifier content and peel strength, and system Tg.En ligne : https://drive.google.com/file/d/14rt32Abr9vR1G6ff-SKpg5A3adVAjN9M/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20386
in ADHESIVES AGE > Vol. 40, N° 3 (03/1997) . - p. 50-55[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001073 - Périodique Bibliothèque principale Documentaires Exclu du prêt UV curable PSAs augment existing adhesive technologies / Tom Kauffman in ADHESIVES AGE, Vol. 41, N° 7 (07/1998)
[article]
Titre : UV curable PSAs augment existing adhesive technologies Type de document : texte imprimé Auteurs : Tom Kauffman, Auteur ; Jim Chappell, Auteur ; Marga Acevedo, Auteur ; Mark Mitry, Auteur Année de publication : 1998 Article en page(s) : p. 29-33 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Séchage sous rayonnement ultraviolet
Adhésifs en phase solvant
Adhésifs sensibles à la pression
Copolymère ester acrylique
Monomères
Polymères ramifiés
Réseaux neuronaux (informatique)
Réticulation (polymérisation)
Tackifiant (adhésifs)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Solvent-based, water-based and hot melt adhesives have a long history of success for pressure sensitive adhesive (PSA) tape and label applications. These technologies are seemingly well entrenched with adequate performance and low cost. Several market trends, however, are opening up new opportunities for UV curable PSAs.
In contrast to solvent-based adhesives, UV curable PSAs contain no fugitive solvent and are therefore VOC compliant. In contrast to hot melts, UV curable adhesives offer a crosslinked network upon cure and therefore are capable of higher heat resistance and plasticizer resistance. Finally, in contrast to water-based technologies, UV curable PSAs offer immediate cure and can be formulated to exhibit much better blushing resistance upon exposure to water. The lack of a need for drying capability is also a significant advantage of UV curable adhesives over water-based technology.Note de contenu : - Market drivers
- In-house coating of PSAs
- Unique applications
- Low VOC
- UV curable warm melt adhesives
- Room temperature applied UV PSAs
- Experimental design techniques
- Use of neural networks
- Development of room temperature applied PSAsEn ligne : https://drive.google.com/file/d/16Xy1FKRQ4JkQJB4aunNXyziUJg8fznaA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20312
in ADHESIVES AGE > Vol. 41, N° 7 (07/1998) . - p. 29-33[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001435 - Périodique Bibliothèque principale Documentaires Exclu du prêt UV-curing of coatings with unsaturated polyesters with different structures / Vera Kornilova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4650 (04/2019)
PermalinkVAE-dispersions for a variety of coatings applications / Kevin Merlo in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4618 (03/2016)
PermalinkVeoVa 10 vinyl ester based binders for interior silk and exterior architectural paints / Claude Nootens in PAINTINDIA, Vol. LXIV, N° 3 (03/2014)
PermalinkViscosity reduction via monomer selection in solvent-borne high-solids styrene/acrylic coating resins / Charles A. Zezza in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)
PermalinkWaterborne acrylic PSA technology with high-temperature performance / Jong Guo in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 9 (09/2018)
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