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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-pre-treatment for polycarbonate for bonding LSR in a multi-component injection molding process / Christof Ulrich Schlitt in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 1 (03/2019)
[article]
Titre : UV-pre-treatment for polycarbonate for bonding LSR in a multi-component injection molding process Type de document : texte imprimé Auteurs : Christof Ulrich Schlitt, Auteur ; M. Hartung, Auteur ; A. Rüppel, Auteur ; R.-U. Giesen, Auteur ; Hans-Peter Heim, Auteur Année de publication : 2019 Article en page(s) : p. 30-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Collage
Energie de surface
Essais de pelage
Matières plastiques -- Moulage par injection multicomposant
Ozone
Polycarbonates
Rayonnement ultravioletIndex. décimale : 668.4 Plastiques, vinyles Résumé : In this study, the influence of UVC radiation and the influence of ozone on the surface energy of specimens made of polycarbonate were investigated. In an additional step, the peeling resistance of silicone flaps, which were overmolded, onto pre-treated PC plates of multicomponent specimens were analyzed. For this purpose, the samples were exposed to UVC radiation for different lengths of time, ranging from 5 s to 3 600 s. To further evaluate the influence of the ozone created by the UVC in the presence of oxygen, treatments were also performed in pure oxygen and nitrogen atmospheres. Contact angle measurements as well as analyses of the surface roughness were carried out to evaluate the effect of the treatment. Two phenomena were identified during the investigations. In room air and oxygen atmospheres, a short-term effect of UVC radiation was observed, which led to an increase in the surface energy, and, therefore, also to an increase in the wettability after an exposure time of only 10 s. In addition, a long-term effect was also found when tests were performed in a nitrogen atmosphere. This effect became visible after at least 60 s, and increased over the course of the duration exposure. The surface roughness of the polycarbonate plates increased up to about 60 % after 10 s of UVC exposure time in an air atmosphere, after 300 s of exposure to UVC radiation the roughness values had more than doubled. A modular injection molding tool was designed for the production of multi-component specimens. In this tool, a thermoplastic plate is molded on the one side, and is then automatically transferred by a robot system to be overmolded with silicone on the other side. The employed injection molding technique makes an intermediate treatment, such as surface activation of the thermoplastic plate, possible before it is overmolded. Also, the short-term and long-term effects of UVC treatment were able to be verified again for the peeling resistance of the material. These tests were only carried out for specimens treated in air. Note de contenu : - OBJECTIVES
- EXPERIMENTAL : Materials - UVC/ozone treatment - Test methods
- Results and discussion : Contact angle and surface energy - Surface roughness - Peeling resistance of pre-treated multi-component specimens - DiscussionDOI : 10.3139/217.3509 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31909
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 1 (03/2019) . - p. 30-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20669 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Versatile and flexible : Analyzing the development of new novel high performance emulsion pressure sensitive adhesives Type de document : texte imprimé Auteurs : M. Ojunga-Andrew, Auteur ; Jong S. Guo, Auteur ; Sharon D. Trembley, Auteur ; Augustin T. Chen, Auteur Année de publication : 1999 Article en page(s) : p. 29-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Propriétés mécaniques
Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Essais de pelage
Polyacryliques
Polymérisation en émulsion
Résistance au cisaillement
Réticulation (polymérisation)
RhéologieIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Analyzing the development of new novel high performance emulsion pressure sensitive adhesives. We have developed a family of high performance acrylic pressure sensitive adhesives (PSAs) using a novel emulsion polymerization technology. These new PSAs exhibit an excellent balance of peel and shear performances. The base polymers of these PSAs are compatible with many traditional tackifiers and other additives that allow greater formulation versatility for paper and film applications. This paper presents the new base polymers properties, capabilities and highlights our recent work for the removable and repositionable PSA applications. The markets and technology in the PSA industry are growing rapidly. Due to the VOC concern, many of the new applications also utilize emulsion PSAs. To meet the challenging market needs, we utilized new raw materials, processes and new chemistry to develop new emulsion PSAs that have higher performance and better environmental compliance. Although generally, waterborne PSAs have some shortfalls in performance compared to solution PSAs, new technology is closing this gap. The versatility of acrylic chemistry and polymerization processes allowed us to design base polymers with unique properties. Note de contenu : I. New GELVA emulsion polymers
II. Formulation versatility
III. Tackification
IV. Typical rheological behavior of tackified PSA
V. CrosslinkingEn ligne : https://drive.google.com/file/d/1lRftzcpNgZEcbNGNchOdX7jtVJoANZYp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20105
in ADHESIVES AGE > Vol. 42, N° 6 (06/1999) . - p. 29-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001444 - Périodique Bibliothèque principale Documentaires Disponible Water-dispersible raw materials for hot melt adhesives / Richard A. Miller in ADHESIVES AGE, Vol. 39, N° 12 (11/1996)
[article]
Titre : Water-dispersible raw materials for hot melt adhesives Type de document : texte imprimé Auteurs : Richard A. Miller, Auteur ; Gregg M. Althen, Auteur Année de publication : 1996 Article en page(s) : p. 21-26 Langues : Américain (ame) Catégories : Adhésifs à usages médicaux
Adhésifs en phase aqueuse
Adhésifs thermofusibles
Cosmétiques
Emballages
Essais d'adhésion
Essais de pelage
Etiquettes
Matières premières
Nontissés
Polyesters
Polyéthylène
Polyéthylène téréphtalate
Polymères ramifiésIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Repulping of paper products has created a need for hot melt adhesives that are water-dispersible. Eastman Chemical Co. has developed a family of branched, water-dispersible polyesters suitable for formulating aqueous dispersions as well as hot melt adhesives for packaging, nonwovens and other uses. Available in a range of viscosities, these materials offer the following key features when formulated into hot melt adhesives.
- 100% water-dispersible in ordinary tap water at room temperature in less than three hours; conventional industry standard formulations are non-dispersible.
- non-dispersible in ionic solutions (i.e., body fluids); competitive water-dispersible technologies are not ionic by nature and, therefore, likely to have some degree of solubility in saline solutions.
- superior adhesion to polyolefin films; hot melt adhesives based on these branched polyesters have from 10% to 110% better adhesion to PE and PET than conventional formulations. Some of the current technologies do not adhere to polyolefins.
- comparable key physical properties to conventional formulations; characteristics such as Tg, softening point, elongation, shear adhesion failure temperature and peel adhesion failure temperature are comparable for these branched polyesters and conventional hot melt polymers.
The purpose of this article is to discuss these new branched polyesters as raw materials for hot melt adhesives that are water-dispersible and to review the statistical experimental process by which their adhesive performance is optimized.Note de contenu : - PRODUCT FUNCTION
- APPLICATIONS : Nonwovens - Packaging adhesives
- OTHER APPLICATIONS : Removable labels for PET bottles - Adhesive for wound care patches - Film-former for cosmetics - Competitive matrix
- TECHNICAL APSECTS OF POLYESTERS
- INCORPORATION INTO ADHESIVE FORMULATIONS
- PHYSICAL PROPERTIES OF BRANCHED POLYESTERSEn ligne : https://drive.google.com/file/d/1ht9xoUhXeE_I1zP5tK75nIZJYsNivNbt/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20544
in ADHESIVES AGE > Vol. 39, N° 12 (11/1996) . - p. 21-26[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001069 - Périodique Bibliothèque principale Documentaires Exclu du prêt Wetting additive for water based pressure sensitive adhesives / Gerald Marinzulich in ADHESION - ADHESIVES + SEALANTS, N° 9/2005 (09/2005)
[article]
Titre : Wetting additive for water based pressure sensitive adhesives Type de document : texte imprimé Auteurs : Gerald Marinzulich, Auteur Année de publication : 2005 Article en page(s) : p. 20-23 Langues : Multilingue (mul) Catégories : Adhésifs -- Additifs
Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Agents mouillants
Antimousse
Essais de pelage
Essais dynamiques
Mouillage (chimie des surfaces)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : For aqueous adhesives, complete substrate wetting is critical to obtaining a strong adhesive bond. Reducing the surface tension is necessary to obtain complete wetting of many difficult or contaminated substrates. An anionic wetting additive is available that is easily incorporated into water based pressure sensitive adhesive systems. Use of it improves the properties of acrylic and vinyl-acrylic adhesive systems. Note de contenu : - Wetting additive
- Defoamer
- Peel strength testsEn ligne : https://drive.google.com/file/d/1oqWgMVJkua0nDBl6cdsSyBYeLdL1PK8Z/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25496
in ADHESION - ADHESIVES + SEALANTS > N° 9/2005 (09/2005) . - p. 20-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13504 - Périodique Bibliothèque principale Documentaires Disponible