Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
New solution acrylic PSAs for transfer tape applications / Eric Silverberg in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 16, N° 7 (07-08/2009)
[article]
Titre : New solution acrylic PSAs for transfer tape applications Type de document : texte imprimé Auteurs : Eric Silverberg, Auteur Année de publication : 2009 Article en page(s) : p. 28-31 Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression
Polyacryliques
Polymères
Rhéologie
Rubans adhésifs
Tackifiant (adhésifs)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The use of tackifiers in acrylic systems allows for better adhesion to low-surface-energy materials such as polyethylene and polypropylene. The covalent bond formed during crosslinking maintains strong cohesion properties despite the drop in storage modulus associated with formulation, which comes in contrast to traditional metal chelate systems. In addition to wide formulation latitude, these polymers have shown a tremendous range in glass-transition temperature (Tg), solubility parameters and functional group tolerance.
This article provides an introduction to the new technology and addresses how to achieve two-part performance in a one-part package.Note de contenu : TABLE : Base polymers made and general physical properties
FIGURES : 1. Aluminum Tris(acetylacetonate) and titanium dialkoxide bis(acetylacetonate) - 2. Example of hydroxyl functional PSA reacting with a Ddiisocyanate - 3. Acid and epoxy reaction - 4. Peel of a high-performance acrylic vs. base polymer A on various substrates - 5. Peel of a standard tackified grade vs. formulated polymers B and C - 6. Elevated temperature cohesive strength comparison - 7. Commercial grades vs. R&D grade on painted panels - 8. Typical rheological profile of base polymers vs. formulated adhesive - 9. Comparison of polymers D and EEn ligne : http://www.adhesivesmag.com/articles/88081-new-solution-acrylic-psas-for-transfe [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25902
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 16, N° 7 (07-08/2009) . - p. 28-31[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011478 - Périodique Bibliothèque principale Documentaires Disponible New tackifier dispersions at the cutting edge of PSAs / Nick Hemmings in ADHESIVES AGE, Vol. 41, N° 10 (10/1998)
[article]
Titre : New tackifier dispersions at the cutting edge of PSAs Type de document : texte imprimé Auteurs : Nick Hemmings, Auteur Année de publication : 1998 Article en page(s) : p. 40-44 Langues : Américain (ame) Catégories : Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Adhésion
Antimousse
Dispersions et suspensions
Essais (technologie)
Matières premières
Pelage
Polyéthylène basse densité
Tack à la boucle (test)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Tackifiers are readily accepted as a vital component in the formulation of optimum performance adhesives. Eka Chemicals has recently developed a new series of Snowtack[TM] tackifier dispersions for water-based pressure sensitive adhesives (PSAs) that have improved cohesive strength. The water-based segment has shown the strongest growth in the last 15 years compared to hot melt and solvent PSAs. This was initially due to lower costs, reduced flammability and environmental considerations. Continued growth has been due, in part, to the development of polymer and tackifier dispersions that meet today's technology requirements for coating, converting and performance.
The key stages in the production of a water-based PSA label are as follows :
- Compounding - the blending of the tackifier, polymer and other additives, such as defoamers and wetting agents;
- The resultant adhesive is pumped to the coater, where the coating head could be one of many configurations but is predominantly slot die or reverse gravure;
- The adhesive is applied to the carrier and passed through drying ovens at speeds of up to 500 m/min;
- The dried adhesive is laminated and wound as master rolls; and
- These rolls are subsequently slit into smaller rolls prior to die cutting of the label shape and design printing.Note de contenu : - Polymer
- Adhesive and adhesion
- Tackifier resin
- Surfactant and stabilizer
- Tackifiers and cohesion
- New tackifier dispersions
- Adhesive performance
- Test procedures
- Shear
- Peel
- Loop
- Dispersion quality
- Stability of tackifier dispersionsEn ligne : https://drive.google.com/file/d/10Umk0-kSkvLt4SVvIwIvS0Fbve6rJGJB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20330
in ADHESIVES AGE > Vol. 41, N° 10 (10/1998) . - p. 40-44[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001438 - Périodique Bibliothèque principale Documentaires Exclu du prêt New techniques for in situ characterization of PSAs / Zong Fu Li in ADHESIVES AGE, Vol. 37, N° 13 (12/1994)
[article]
Titre : New techniques for in situ characterization of PSAs Type de document : texte imprimé Auteurs : Zong Fu Li, Auteur ; Robert F. Callahan, Auteur ; Charles Hanson, Auteur Année de publication : 1994 Article en page(s) : p. 44-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression
Analyse mécanique dynamique
Analyse thermique
CaractérisationIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Pressure sensitive adhesive systems are typically based on natural and synthetic rubbers, such as poly(styrene-isoprene-styrene) block copolymers and polyisobutylene, elastomeric acrylics and silicones. An essential ingredient in PSAs is a tackifier that typically constitutes 35-50% by weight of the adhesives. Common tackifiers are wood rosins, tall oils and synthetic oligomers.
The most important property of PSAs is their tackiness. To increase the tackiness of PSAs, one could increase the amount of tackifier, but excessive tackifier will reduce the cohesive strength. PSAs should possess a high enough cohesive strength so they will not leave appreciable residuals when peeled from adherend surfaces. In formulating a PSA, an objective is to maximize both the tackiness and cohesive strength of the adhesive. Due to the viscoelastic nature of PSAs, their tackiness determined by any test methods strongly depends on testing conditions. The most common tool to characterize PSA physical properties is dynamic mechanical analysis (DMA), which obtains the glass transition temperature Tg, shear moduli and tan ?. The usefulness of parameters obtained by DMA for designing PSAs is well documented. In doing such a test, bulk adhesives are prepared with a sample thickness of 1 mm. An in-situ DMA test of commercial PSAs with backings, however, is obviously impossible. This article describes a new thermal analysis technique: the thermally stimulated current (TSC) technique for the in-situ characterization of Tg and the viscoelastic relaxation processes of PSAs.Note de contenu : Thermally stimulated currrent En ligne : https://drive.google.com/file/d/1q6hqwWZJyYV88yHL69rtJjbC9phjrwQy/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20809
in ADHESIVES AGE > Vol. 37, N° 13 (12/1994) . - p. 44-46[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001046 - Périodique Bibliothèque principale Documentaires Disponible New technologies in silicone adhesives / Brian Burkitt in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 8 (08/2012)
[article]
Titre : New technologies in silicone adhesives : Silicone-based film adhesives, PSAs and tacky gels each offer unique advantages Type de document : texte imprimé Auteurs : Brian Burkitt, Auteur ; Brian Reilly, Auteur ; Danielle Peak, Auteur Année de publication : 2012 Article en page(s) : p. 28-30 Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression
Colloides
Electronique -- Matériaux
Gel de silicone
Polymères en médecine
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Two-part silicone film adhesives, silicone pressure-sensitive adhesives (PSAs) and silicone tacky gels are often used in vastly different applications, from scar treatment therapies to solar cell assemblies. When seeking the most suitable type of silicone for a specific application, knowing the differences among these materials is essential. Adhesion, cure time and physical strength are among the factors to consider.
Perhaps the most advantageous feature of silicone is that its properties can be modified and optimized as needed. Comprising the siloxane polymer backbone of a silicone are repeating helical silicon-oxygen bonds whose bond angles yield large amounts of free volume, leaving space for design (see Figure 1). The virtually complete freedom of rotation around (and potential interaction with) the Si-O-Si bonds is accounted for by the large atomic volume of the silicon atoms and the size and position of constituent groups. A silicone’s properties can be tailored to suit an application’s needs by varying these functional pendant groups (R) on the polymer chain or by adding fillers.Note de contenu : - Film adhesives
- Tacky gels
- Pressure-sensitive adhesives
- Find the right optionEn ligne : http://www.adhesivesmag.com/articles/91217-new-technologies-in-silicone-adhesive [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18953
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 8 (08/2012) . - p. 28-30[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14483 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : New uses for water-based PSAs : Formulations based on acrylic latex and polyurethane dispersion created for graphic labels and tapes Type de document : texte imprimé Auteurs : John Ouyang, Auteur ; Solomon Jacobson, Auteur ; Lilly Shen, Auteur ; Scott Reedell, Auteur Année de publication : 2002 Article en page(s) : p. 22-24 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Dispersions et suspensions
Dynamique moléculaire
Etiquettes
Latex
pH
Polyacryliques
Résistance au cisaillement
Rubans adhésifsIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Observed viscosity increase and high-shear resistance at high pH for anionic polyurethane (78-6625)/acrylic might be due to stronger molecular interactions. Molecular modeling calculations showed stronger molecular interactions between the acrylic polymer and anionic polyurethane at higher pH.
The calculation also revealed slightly weaker molecular interactions between the acrylic polymer and nonionic polyurethane (Luphen D259U) when the pH increases. Comparison of results obtained for polyurethane with different stabilizing mechanisms suggested that molecular interactions could be useful for predicting blend stability and adhesion performance.En ligne : https://drive.google.com/file/d/1lnJq-9jcpLV8QjaLIZaLZyqTgMr7B7m3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19991
in ADHESIVES AGE > Vol. 45, N° 3 (03/2002) . - p. 22-24[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001469 - Périodique Bibliothèque principale Documentaires Disponible Non-migratory surfactants in emulsion polymerisation / Jo Grade in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4627 (12/2016)
PermalinkPackaging Productivity / Martha Belem Mendieta in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 17, N° 3 (03/2010)
PermalinkPermalinkPolyesters for sustainable adhesives technologies / Timothy E. Long in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 18, N° 9 (09/2011)
PermalinkPermalinkPressure-sensitive adhesive characteristics and their impact on foam anchorage in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 5 (05/2018)
PermalinkPressure-sensitive adhesives 101 / Kurt Schramer in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 16, N° 9 (10-11/2009)
PermalinkPressure-sensitive adhesives and applications / Istvà n Benedek / New York [United States] : Marcel Dekker, Inc. (2004)
PermalinkPressure-sensitive adhesives and tapes : an overview / Anthony Cotter in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 27, N° 7 (07/2020)
PermalinkPressure-sensitive adhesives are in the driver's seat / Janet Page in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 23, N° 7 (07/2016)
PermalinkPressure sensitive adhesives improve airbag assembly and performance / Jeff Briton in ADHESIVES AGE, Vol. 41, N° 9 (09/1998)
PermalinkPressure-sensitive design and formulation, application / Istvà n Benedek / Leiden [The Netherlands] : Koninklijke Brill NV (2006)
PermalinkPressure-sensitive formulation / Istvà n Benedek / Zeist [Pays Bas] : VSP BV (2000)
PermalinkPressure-sensitive medical technology : Challenges and considerations / Shaun McDonough in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 23, N° 7 (07/2016)
PermalinkPressure-sensitive tape solutions for electronics / Tom Epple in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 27, N° 7 (07/2020)
Permalink