scholarly journals Influence of the unsaturated photoinitiators kind on the properties of uv-crosslinkable acrylic pressure-sensitive adhesives

2012 ◽  
Vol 14 (3) ◽  
pp. 83-87
Author(s):  
Zbigniew Czech ◽  
Agnieszka Kowalczyk ◽  
Karolina Górka ◽  
Urszula Głuch ◽  
Lu Shao ◽  
...  
Keyword(s):  
Raw Materials ◽  
Polymerization Process ◽  
Crosslinking Reaction ◽  
Light Pressure ◽  
Polymer Backbone ◽  
Pressure Sensitive Adhesives ◽  
Monomer Composition ◽  
Pressure Sensitive ◽  
Simple Contact ◽  
New Applications

UV-crossinkable pressure-sensitive adhesives (PSA) materials are called, in the adhesives trade photoreactive self-adhesive. UV-crosslinkable PSAs are designed after the UV-initiated crosslinking reaction to stick to almost any surface by a simple contact under light pressure. This special class of adhesives does not undergo any physical transformation or chemical reaction during the bonding process. Because of the rheological properties the adhesive must be fi nely tuned for the application, combining a carefully chosen polymer architecture and monomer composition with the proper addition of small additives called photoinitiators. The best way is using the unsaturated copolymerizable photoinitiators and their direct incorporation into polymer chain during the polymerization process. Progress in the coating technology and the development of novel photoreactive acrylic adhesives will open the door to new applications and an extended market penetration of UV-crosslinkable acrylic adhesive raw materials containing unsaturated copolymerizable photoinitiators incorporated into the polymer backbone. Photoreactive UV-crosslinkable acrylic PSA are characterized by good tack, good adhesion, excellent cohesion and very low shrinkage.

Pressure-Sensitive Adhesives: An Introductory Course

MRS Bulletin ◽  
2003 ◽  
Vol 28 (6) ◽  
pp. 434-439 ◽  
Author(s):  
Costantino Creton
Keyword(s):  
Light Pressure ◽  
Pressure Sensitive Adhesives ◽  
Monomer Composition ◽  
Deformable Solids ◽  
Introductory Course ◽  
Pressure Sensitive ◽  
Physical Transformation ◽  
Simple Contact ◽  
Physical Principles ◽  
Adhesive Materials

AbstractSelf-adhesive materials are called, in the adhesives trade, “pressure-sensitive adhesives” (PSAs). PSAs are designed to stick on almost any surface by simple contact under light pressure. This special class of adhesives does not undergo any physical transformation or chemical reaction during the bonding process. Because of this, the rheological properties of the adhesive must be finely tuned for the application, combining a carefully chosen polymer architecture and monomer composition with the proper addition of small molecules called tackifying resins. PSAs are soft, deformable solids and, depending on the formulation, easily form bridging fibrils between two surfaces upon debonding. They are safe to use and easy to handle and thus are increasingly replacing more conventional types of adhesives. In this article, we review both the primary material characteristics of PSAs and the main physical principles that make them work effectively.

scholarly journals Manufacturing of Solvent-Free Acrylic Pressure-Sensitive Adhesives in Form of Self-Adhesive Layers

2013 ◽  
Vol 13 ◽  
pp. 147-159 ◽  
Author(s):  
Zbigniew Czech ◽  
Dominika Sowa ◽  
Paulina Ragańska
Keyword(s):  
Solvent Free ◽  
Polymerization Process ◽  
Pressure Sensitive Adhesive ◽  
Adhesive Layers ◽  
Pressure Sensitive Adhesives ◽  
Uv Crosslinking ◽  
Pressure Sensitive ◽  
New Synthesis ◽  
Technical Specifications ◽  
New Applications

The present publication is related to a process for producing the non-solvent acrylic pressure-sensitive adhesive (PSA). New applications and technical specifications stimulate the continuous development of new methods of polymerization of solvent-free acrylate. New synthesis of solvent-free acrylics includes polymerization in the reactor with removal of the solvent and polymerization of the carrier. The polymerization process is connected with UV-crosslinking.

Control of structure and tack properties of acrylic pressure-sensitive adhesives designed by a polymerization process

2003 ◽  
Vol 89 (10) ◽  
pp. 2749-2756 ◽  
Author(s):  
A. Aymonier ◽  
D. Leclercq ◽  
P. Tordjeman ◽  
E. Papon ◽  
J-J. Villenave
Keyword(s):  
Polymerization Process ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive

Crosslinked acrylic pressure-sensitive adhesives. II. Effect of humidity on the crosslinking reaction

2003 ◽  
Vol 89 (11) ◽  
pp. 3039-3045 ◽  
Author(s):  
Junko Asahara ◽  
Ayako Sano ◽  
Naruhito Hori ◽  
Akio Takemura ◽  
Hirokuni Ono
Keyword(s):  
Crosslinking Reaction ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive

scholarly journals Preparation of environmentally friendly acrylic pressure-sensitive adhesives by bulk photopolymerization and their performance

RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 10277-10284 ◽  
Author(s):  
Menglu Zhu ◽  
Zhanshuo Cao ◽  
Haijun Zhou ◽  
Yijun Xie ◽  
Guohua Li ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Uv Irradiation ◽  
Butyl Acrylate ◽  
Environmentally Friendly ◽  
Bulk Polymerization ◽  
Polymerization Process ◽  
Pressure Sensitive Adhesives ◽  
Uv Crosslinking ◽  
Pressure Sensitive

Polyacrylic pressure-sensitive adhesives based on butyl acrylate, 2-hydroxyethyl acrylate, and acrylic acid were prepared by a bulk polymerization process triggered by a radical photoinitiator under UV irradiation and UV-crosslinking.

Tack and Green Strength of Elastomeric Materials

1981 ◽  
Vol 54 (3) ◽  
pp. 576-595 ◽  
Author(s):  
G. R. Hamed
Keyword(s):  
Light Pressure ◽  
Pressure Sensitive Adhesives ◽  
Green Strength ◽  
Pressure Sensitive ◽  
Deformation And Fracture ◽  
Resistance To Deformation ◽  
Elastomeric Materials ◽  
The Many ◽  
Term Creep ◽  
Short Time

Abstract Tack and green strength are two important properties of many elastomer compounds. Tack is the ability of two materials to resist separation after bringing their surfaces into contact for a short time under a light pressure. Two types can be defined: autohesive tack (autohesion), where both materials have the same chemical composition and adhesive tack, in which the two materials have dissimilar compositions. The green strength of an elastomer is its resistance to deformation and fracture before vulcanization. Rubber stocks that are used in tire manufacture (or other plied-up operations) must have a certain minimum level of tack and green strength. Tack is necessary so that the many components of a green tire will hold together until molding. This requires not only that the components exhibit quick stick when building, but also that the tack bonds have long term creep resistance, since the green tire may be hung on a rack several days before molding and vulcanization. In addition, an uncured tire must have good green strength so that it will not creep and hence distort excessively before molding or tear during the expansion that occurs upon molding (or in the second stage for a radial tire). Adhesive tack is an important property of pressure sensitive tapes. Although some of the basic criterion necessary to obtain high autohesive tack or high adhesive tack are similar, this review will focus primarily on autohesion. Thus, unless otherwise staled, the term “tack” will refer to autohesive tack. However, ideas and results will be presented from the literature on pressure sensitive adhesives when such information leads to a further understanding of autohesion.

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