scholarly journals Photoreactive UV-Crosslinkable Acrylic Pressure-Sensitive Adhesives (PSA) Containing Multifunctional Photoinitiators

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4413
Author(s):  
Marcin Bartkowiak ◽  
Zbigniew Czech ◽  
Hyun-Joong Kim ◽  
Gyu-Seong Shim ◽  
Małgorzata Nowak ◽  
...  
Keyword(s):  
Shear Strength ◽  
Ultraviolet Radiation ◽  
Type I ◽  
Type Ii ◽  
Pressure Sensitive Adhesives ◽  
Crosslinking Process ◽  
Pressure Sensitive ◽  
Peel Adhesion ◽  
The One ◽  
Uv Technology

The use of ultraviolet radiation (UV) technology for the crosslinking of acrylic pressure-sensitive adhesives (PSA) is the one of various crosslinking methods, being the alternative to the conventional crosslinking process of solvent-based acrylic systems. It also requires a photoinitiator to absorb the impinging UV and induce photocrosslinking. As previously mentioned, a photoinitiator is one of the important and necessary components in UV-inducted crosslinking of acrylic pressure-sensitive adhesives. The activity of multifunctional conventional saturated photoinitiators of type I and type II, especially benzophenone-based in the photoreactive UV-crosslinkable acrylic PSA was described. The effect of the multifunctional type-II photoinitiators on the acrylic PSA, such as tack, peel adhesion and shear strength were summarized.

scholarly journals Acrylic Pressure-Sensitive Adhesives Containing SiO2 Nanoparticles

2013 ◽  
Vol 15 (1) ◽  
pp. 12-14 ◽  
Author(s):  
Zbigniew Czech ◽  
Agnieszka Kowalczyk ◽  
Joanna Ortyl ◽  
Jolanta Świderska
Keyword(s):  
Shear Strength ◽  
Sio2 Nanoparticles ◽  
Shear Resistance ◽  
Inorganic Filler ◽  
Pressure Sensitive Adhesives ◽  
Medical Products ◽  
Pressure Sensitive ◽  
Protective Films ◽  
Carrier Free ◽  
Peel Adhesion

The use of acrylic pressure-sensitive adhesives (PSAs) is increasing in a variety of industrial fields. They have been applied in the manufacture of mounting tapes, self-adhesive labels, protective films, masking tapes, splicing tapes, carrier-free tapes, sign and marking films, and in diverse medical products, such as pads or self-adhesive bioelectrodes. In this study, the application of SiO2 nanoparticles in acrylic PSA was investigated. The properties of the newly synthesized and modified PSA were evaluated via the tack, peel adhesion, shear-strength and shrinkage. It has been found that the nanotechnologically-reinforced systems consisting of monodisperse non-agglomerated SiO2 nanoparticles and self-crosslinked acrylic PSAs showed a great enhancement in tack, peel adhesion, shear resistance and shrinkage, without showing the disadvantages known to result from the use of other inorganic additives. In this paper we evaluate the performance of SiO2 nanoparticles with a size of about 30 nm as inorganic filler into the synthesized solvent-borne acrylic PSA.

scholarly journals Water-borne pressure-sensitive adhesives acrylics modified using amorphous silica nanoparticles

2016 ◽  
Vol 18 (4) ◽  
pp. 124-128 ◽  
Author(s):  
Zbigniew Czech ◽  
Zbigniew Maciejewski ◽  
Krystyna Kondratowicz-Maciejewska
Keyword(s):  
Shear Strength ◽  
Silica Nanoparticles ◽  
Amorphous Silica ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Counter Ion ◽  
Peel Adhesion ◽  
Medical Materials ◽  
Water Borne

Abstract The application of water-borne pressure-sensitive adhesives (PSA) based on acrylics is increasing in a variety of industrial areas. The have been used for manufacturing of double sided and carrier free mounting tapes, splicing tapes, marking and sign films, self-adhesive labels, packaging tapes, protective films and diverse high quality medical materials. Nano-sized inorganic fillers can modify diverse adhesive and self-adhesive coating properties such as tack, peel adhesion, shear strength at 20°C and 70°C, and removability Amorphous synthetic silica nanoparticles in form of water dispersions: Ludox PX-30 (30 wt.% silica stabilizing with counter ion sodium), Ludox PT-40 (40 wt.% silica stabilizing with counter ion sodium), Ludox PT-40AS (40 wt.% silica stabilizing with counter ion ammonium), and Ludox PW-50 (50 wt.% silica stabilizing with counter ion sodium) (from Grace) in concentrations between 1 and 5wt.% were used for modifying of water-born pressure-sensitive adhesive acrylics: Acronal 052, Acronal CR 516 (both BASF) and Plextol D273 (Synthomer) properties. It has been found in this study that the nano-technologically reinforced system containing of Acronal 052 and amorphous silica Ludox PX-30 showed a great enhancement in tack, peel adhesion and shear strength. In this paper we evaluate the performance of Acronal 052 modified with amorphous silica Ludox PX-30.

scholarly journals Novel Photoreactive Pressure-Sensitive Adhesives (PSA) Based on Acrylics Containing Additionable Photoinitiators

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5151
Author(s):  
Zbigniew Czech ◽  
Janina Kabatc ◽  
Marcin Bartkowiak ◽  
Adam Licbarski ◽  
Karolina Mozelewska ◽  
...  
Keyword(s):  
Shear Strength ◽  
Polymer Chain ◽  
Uv Light ◽  
Pressure Sensitive Adhesive ◽  
Acrylic Polymer ◽  
Pressure Sensitive Adhesives ◽  
Uv Crosslinking ◽  
Pressure Sensitive ◽  
Peel Adhesion ◽  
Uv Dose

A new class of additionable ultraviolet photoinitiators that can be used, through addition, for modification of the acrylic polymer chain and their influence of main properties of acrylic pressure-sensitive adhesives (PSAs) is described here. The photoinitiators studied are based on benzophenone, dibenzofuran and anthraquinone chromophores. The propyleneimine carbonyl is the reactive additionable group incorporated in the photoinitiator structure. First, the solvent-borne acrylic pressure-sensitive adhesive was synthesized and characterized. Then, a photoinitiator suitable for addition to the acrylic polymer chain possessing a carboxyl group was added before UV-irradiation. A mechanism of UV-initiated cross-linking reaction of acrylic PSA with additionable photoinitiators was done as well. The influence of the concentration and type of photoinitiator, UV-crosslinking time and UV-dose on peel adhesion, shear strength and tack of solvent-borne acrylic pressure-sensitive adhesives cross-linked by UV light was studied and presented here. It was found that the tack depends on the UV-dose and photoinitiator concentration. An increase of UV dose results in an increase of shear strength of acrylic pressure-sensitive adhesive (PSA) formulations.

scholarly journals New Copolymerizable Photoinitiators for Radiation Curing of Acrylic PSA

2013 ◽  
Vol 13 ◽  
pp. 57-65
Author(s):  
Zbigniew Czech ◽  
Dominika Sowa ◽  
Paulina Ragańska
Keyword(s):  
Hydroxyl Groups ◽  
Radiation Curing ◽  
Pressure Sensitive Adhesives ◽  
New Class ◽  
Uv Crosslinking ◽  
Crosslinking Process ◽  
Pressure Sensitive ◽  
Main Emphasis ◽  
Peel Adhesion ◽  
Organic Carbonate

This article presents a new class of copolymerizable photoinitiators containing vinyloxycarbonyl groups, known such as organic carbonate or carbamate. Novel copolymerizable photoinitiators have been prepared through the reaction between vinyl chloroformate and hydroxyl groups containing photoreactive derivatives such as benzophenone-, acetophenone-, benzoine-and anthrachinone-derivatives. The main emphasis is given to the influence of this new class of unsaturated photoinitiators on UV-crosslinking process of acrylic pressure-sensitive adhesives (PSA). Moreover, the paper describes the influence of various parameters such as UV-initiated crosslinking time and concentration of unsaturated photoinitiators on relevant PSA properties like tack, peel adhesion and shear strength (cohesion).

scholarly journals UV-Crosslinkable Photoreactive Pressure-Sensitive Adhesives Synthesized from Butyl Acrylate and 4-Acryloyloxy Benzophenone

2013 ◽  
Vol 8 ◽  
pp. 21-28 ◽  
Author(s):  
Zbigniew Czech ◽  
Dominika Sowa ◽  
Jagoda Kowalska
Keyword(s):  
Shear Strength ◽  
Molecular Mass ◽  
Butyl Acrylate ◽  
Cohesive Strength ◽  
Pressure Sensitive Adhesive ◽  
Adhesive Properties ◽  
Pressure Sensitive Adhesives ◽  
Uv Crosslinking ◽  
Pressure Sensitive ◽  
Peel Adhesion

The manuscript describes synthesized of photoreactive UV-crosslinkable solvent-borne acrylic pressure-sensitive adhesives (PSA) based on butyl acrylate (BA) and copolymerizable photoinitiator 4-acryloyloxy benzophenone (ABP) characterized by molecular mass in the range of 180 000 to 480 000 Dalton. These copolymers were tacky but possessed insufficient cohesive strength after UV-crosslinking to be useful as PSA. They resulted in materials having a balance of cohesive and adhesive characteristics required of good PSA. Some of the parameters affecting the pressure-sensitive adhesive properties of the copolymer are: amount of the 4-acryloyloxy benzophenone, molecular mass of the polymeric components, UV-reactivity and such important properties like tack, peel adhesion and shear strength.

scholarly journals Silicone pressure-sensitive adhesives with increased thermal resistance

2021 ◽  
Author(s):  
Adrian Krzysztof Antosik ◽  
Karolina Mozelewska ◽  
Marta Piątek-Hnat ◽  
Zbigniew Czech ◽  
Marcin Bartkowiak
Keyword(s):  
Thermal Resistance ◽  
Thermal Effects ◽  
Elevated Temperatures ◽  
Adhesive Properties ◽  
Pressure Sensitive Adhesives ◽  
Silicone Adhesive ◽  
Crosslinking Process ◽  
Pressure Sensitive ◽  
Potential Applications ◽  
Peel Adhesion

AbstractThe purpose of this work was to obtain single-sided tapes with different concentrations of kaolin and to check its impact on the self-adhesive properties of commercial adhesives. The most important self-adhesive properties were examined, such as tack, peel adhesion, shear strength, shrinkage, and thermal resistance. Tapes based on silicone PSAs with kaolin can be used in many branches of industry to bond elements operating at elevated temperatures, i.e., in aeronautics, aerospace including solar cells for satellites and space stations. There are few reports on one-sided adhesive tapes based on silicones with the addition of kaolin. However, taking into account the number of their potential applications, we did self-adhesive tests and explained how kaolin affects them. In addition, the reactivity of the crosslinking compound and silicone adhesive during the crosslinking process and the thermal effects of this process were also examined. In connection with the various applications of the obtained tapes, also the flammability and heat of combustion were tested, in accordance with applicable standards. As a result of the tests, one-sided self-adhesive tapes with new properties (increased temperature resistance, less shrinkage, and increased resistance to flammability) were obtained.

Sign in / Sign up

Export Citation Format

Share Document