Dual-curable acrylic pressure-sensitive adhesives based on UV and thermal processes

Kim, Yang Bae; Park, Su Cheol; Kim, Mi Kyeong; Hong, Ji Won

doi:10.1007/bf03218841

Cited by 19 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 6, overall conversion change was examined in terms of photoinitiator concentration. 27 At lower initiator concentration as 1 and 2 wt%, number of radicals to initiate the radical reaction was less than needed to cover the amount of coating solution, which showed very low conversion due to the incomplete curing reaction. Increase of initiator concentration up to 5wt% enhanced the conversion, and the results corresponded with the reaction rate equation.…”

Section: Resultsmentioning

confidence: 98%

Organic-inorganic hard coating layer formation on plastic substrate by UV curing process

Lee

Kim

2010

Macromol. Res.

View full text Add to dashboard Cite

Efficient methods for making organic-inorganic hard coating layers on a polymethylmethacrylate substrate were developed and optimized to improve the mechanical and optical properties. Colloidal silica was coupled with methacryloxypropyltrimethoxysilane to make Si-O-Si bonds before incorporating them into the organic phase of the monomer and oligomer. A combination of photoinitiators with different absorption bands could utilize the UV light throughout the entire wavelength range to show better curing results than the case of a single photoinitiator with a limited absorption band. The effects of the photoinitiator in terms of the mixing ratio and concentration in the coating solution were examined and optimized. The UV curing reactivity was improved using a mixture of different initiators with different absorption bands, and 4:1 ratio mixture of Irgacure 184 and Irgacure 907 showed the best hard coating properties, such as hardness and impact strength. The optimum initiator content was determined to be 5 wt% in the hard coating solution. However, too much initiator resulted in excessive primary radical reactions of the monomers, and the competition of primary radicals reduced the conversion and initiator efficiency.

show abstract

Section: Resultsmentioning

confidence: 98%

Organic-inorganic hard coating layer formation on plastic substrate by UV curing process

Lee

Kim

2010

Macromol. Res.

View full text Add to dashboard Cite

show abstract

“…They have network structure and have better mechanical and thermal stability, but with sacrifice of tackiness and peel strength. [3][4][5] Adjusting the crosslinking density and tailoring the properties of PSAs are very important to be used in various industrial fields. In general, UV-crosslinking is achieved by using multi-functional reagents, however, PSA and crosslinking agents have the tendency to react and to reduce the pot life.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of expanded graphite intercalation compound/UV-crosslinked acrylic resin pressure sensitive adhesives

et al. 2015

View full text Add to dashboard Cite

The expanded graphite intercalated compound (xGIC)/pressure sensitive adhesives (PSAs) were prepared by syrup process and in situ process. The effects of xGIC filler on the morphology and property of acrylic resin based UV-crosslinked PSA were investigated. The xGICs showed more uniform dispersion in acrylic matrix and the degree of filler connection was more prominent in the syrup process than in situ process. The peel strength and tackiness of UV-crosslinked PSAs were strongly dependent on the amount of the filler and the peel strength decreased with increasing xGIC. The thermal conductivity of PSAs was explained in terms of filler dispersion, wetting, and matrix infiltration. The thermal conductivity of PSA was 0.46 W/mK by adding 20 wt% of xGIC, which was 287% improvement compared to the unfilled PSA. It is speculated that 2-dimensional xGIC fillers effectively formed the thermal pathway.

show abstract

“…Pressure sensitive adhesives (PSAs) are polymer networks composed of crosslinked structures capable of bonding two surfaces together with a slight initial external pressure and a short contact time, owing to their viscoelastic properties. [1][2][3][4][5] Thus, they have been widely utilized in practical applications requiring specific properties, such as adhesion and cohesion; these are influenced by molecular parameters, including the monomer ratio, molecular weight, monomer chain structure but also crosslinking network characteristics. [6][7][8][9][10][11][12] Among a plethora of PSAs, acrylic PSAs are particularly attractive due to their numerous advantages, such as excellent optical performance, high temperature resistance, and favorable aging characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of UV Polymerization Curing Conditions on Performance of Acrylic Pressure Sensitive Adhesives

et al. 2021

View full text Add to dashboard Cite

Acrylic pressure sensitive adhesives (PSAs) were prepared by UV polymerization under varying curing conditions of both fast and slow curing, employing high- and low-intensity UV radiation, respectively. The influences of curing conditions and isobornyl acrylate (IBOA) content on PSA performance were comprehensively investigated by measurement of their rheological, thermal, and adhesive properties. In particular, rheological characterization was accomplished by several analytical methods, such as in situ UV rheology, frequency sweep, stress relaxation, and temperature ramp tests, to understand the effect of the UV curing process and IBOA content on the viscoelastic behavior of acrylic PSAs. The slow-cured samples were observed to form more tightly crosslinked networks compared to the fast-cured. On the other hand, at high loading levels of IBOA, in the case of slow curing, the sample exhibited a contrasting trend, having the shortest stress relaxation time and the highest energy dissipation; this was due to molecular chain scission occurring in the crosslinked polymer during UV polymerization. Consequently, we successfully demonstrated the influence of monomer composition of acrylic PSAs, and that of curing conditions employed in UV polymerization. This study provides valuable insights for the development of crosslinked polymer networks of acrylic PSAs for flexible display applications.

show abstract

Dual-curable acrylic pressure-sensitive adhesives based on UV and thermal processes

Cited by 19 publications

References 9 publications

Organic-inorganic hard coating layer formation on plastic substrate by UV curing process

Organic-inorganic hard coating layer formation on plastic substrate by UV curing process

Preparation and characterization of expanded graphite intercalation compound/UV-crosslinked acrylic resin pressure sensitive adhesives

Influence of UV Polymerization Curing Conditions on Performance of Acrylic Pressure Sensitive Adhesives

Contact Info

Product

Resources

About