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.

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 Butyl acrylate/4-acryloyloxy benzophenone copolymers as photoreactive UV-crosslinkable pressure-sensitive adhesives

2009 ◽  
Vol 11 (3) ◽  
pp. 1-4
Author(s):  
Zbigniew Czech ◽  
Agnieszka Butwin
Keyword(s):  
Molecular Mass ◽  
Butyl Acrylate ◽  
Polymer System ◽  
Pressure Sensitive Adhesive ◽  
Adhesive Properties ◽  
Pressure Sensitive Adhesives ◽  
Uv Crosslinking ◽  
Pressure Sensitive ◽  
Peel Adhesion ◽  
Radical Solution

Butyl acrylate/4-acryloyloxy benzophenone copolymers as photoreactive UV-crosslinkable pressure-sensitive adhesives It has previously been shown that copolymers of butyl acrylate with 4-acryloyloxy benzophenone can be used as pressure-sensitive adhesives (PSAs). This paper presents the synthesis and application of a solvent-borne polymer system for the preparation of photoreactive UV-crosslinkable acrylic pressure-sensitive adhesives. Butyl acrylate/benzophenone copolymers with molecular mass in the range 180 000 to 480 000 Dalton were prepared by carrying out free-radical solution polymerization. These copolymers were found to be tacky but in some cases to possess insufficient cohesive strength after UV-crosslinking to be useful as PSAs. The other copolymers resulted in materials with the balance of cohesive and adhesive characteristics required of good PSAs. Some of the parameters affecting the pressure-sensitive adhesive properties of the copolymers are the concentration of 4-acryloyloxy benzophenone, the molecular mass of the polymeric components, the UV-reactivity, and properties such as tack, peel adhesion, and cohesion.

Evaluation of Epoxidized Natural Rubber Latex Based Pressure Sensitive Adhesives Containing Hydrocarbon and Rosin Ester Tackifier Dispersions on Adhesive Properties

2013 ◽  
Vol 845 ◽  
pp. 189-193
Author(s):  
Abu Bakar Rohani ◽  
S. Manroshan ◽  
V. Devaraj
Keyword(s):  
Natural Rubber ◽  
Membrane Separation ◽  
Natural Rubber Latex ◽  
Epoxidized Natural Rubber ◽  
Rubber Latex ◽  
Adhesive Properties ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Peel Adhesion ◽  
Rosin Ester

Epoxidized natural rubber latex with 50 mole % epoxidization referred to as ENR50 L was produced by in situ generated peracids. ENR50 L was subsequently concentrated to ENR50 L concentrate (ENR50 LC)viaultrafiltration membrane separation process. Both, ENR50 Latices (ENR50 L and ENR50 LC) were evaluated for the formulation of latex-based pressure sensitive adhesives (PSAs). In this work, evaluation of hydrocarbon and rosin ester tackifier dispersions in ENR50 Latices - based PSAs were performed through viscosity and peel adhesion test. The viscosity of latex-based PSAs containing hydrocarbon tackifier increased with increasing level of ENR50 Latices. However, the trend for latex-based PSAs containing rosin ester tackifier was inversely proportional to the level of ENR50 Latices. The peel adhesion of ENR50 Latices - based PSAs containing hydrocarbon tackifier was found greater than that of ENR50 Latices based PSAs containing rosin ester tackifier. Furthermore, the peel adhesion of ENR50 LC based PSAs was marginally higher than ENR50 L based PSAs.

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).

Effect of the addition of selected silicon fillers on Si- PSA shrinkage

2021 ◽  
Vol 10 (4) ◽  
pp. 157-159
Author(s):  
Adrian Krzysztof Antosik ◽  
Nataniel Adrian Antosik
Keyword(s):  
Important Criterion ◽  
Adhesive Properties ◽  
Adhesive Material ◽  
Pressure Sensitive Adhesives ◽  
Crosslinking Process ◽  
Pressure Sensitive ◽  
Aging Resistance ◽  
Original Size ◽  
Definition Of ◽  
Carbon Based

The concept of shrinkage phenomenon is widely described in the available literature. With respect to pressure-sensitive adhesives (PSA) in general, the definition of shrinkage is understood to be "less than its original size" and is closely related to the crosslinking process and the effect of the crosslinker on the test adhesive. Shrinkage alongside adhesive properties (adhesion, tackiness) and mechanical (cohesion) is one of the most important characteristics of a self-adhesive adhesive. It is very important in terms of production when receiving, for example, decorative banners or self-adhesive films where crosslinked adhesive and thus shrinkage can affect the surface of the adhesive material and create deformations. In the case of PSA, the acceptable adhesive pressure shrinkage must not exceed 0.5 %. Contraction is an important criterion for assessing the aging resistance of PSA materials. There are no studies on the shrinkage of silicone pressure-sensitive adhesives in literature, but many references to carbon-based adhesives have been reported.

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 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.

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