Adhesion performance and recovery of acrylic pressure-sensitive adhesives thermally crosslinked with styrene–isoprene–styrene elastomer blends for flexible display applications

Lee, Jung-Hun; Shim, Gyu-Seong; Park, Ji-Won; Kim, Hyun‐Joong; Kim, Young‐Kug

doi:10.1016/j.jiec.2019.05.019

Cited by 22 publications

(18 citation statements)

References 21 publications

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“…Pure acrylic PSA prepolymer showed approximately 40% viscoelastic recovery as a result of residual creep strain. Compared with our previous results [14,15], this value is high considering it is pure acrylic PSA. This result is understandable because the acrylic PSA (received from the company specified earlier) is versatile and has basic adhesion and cohesive strength.…”

Section: Non-crosslinked Acrylic Psa/ae Blendscontrasting

confidence: 84%

“…We successfully obtained valuable physical properties (adhesion and recovery) for crosslinked blends relayed onto acrylic PSA/styrene-isoprene elastomer. In this case, although the effect of the elastomer with a long molecular chain certainly influenced the recovery, there was a limitation in that the acrylic PSA became opaque and difficult to apply as a display material [15].…”

Section: Of 13mentioning

confidence: 99%

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Adhesion Performance and Recovery of Acrylic PSA with Acrylic Elastomer (AE) Blends via Thermal Crosslinking for Application in Flexible Displays

et al. 2019

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Acrylic pressure-sensitive adhesive (PSA) is used to fix each layer of a flexible display. Acrylic PSA needs to satisfy specific elongation and recovery requirements so that reliability of the flexible display can be achieved. For this reason, we aimed to design an acrylic PSA/acrylic elastomer (AE) blend and to study how some viscoelastic and adhesion properties are influenced by the AE content into the mixed, blended system. Samples were characterized by UV–Vis spectrophotometry for transmittance, texture analysis for adhesion performances, and dynamic mechanical analysis (DMA) for recovery and viscoelasticity. When acrylic PSA/AE was simply blended, the adhesion performance changed due to the influence of the long molecular chains of AE. Based on this result, the AE content was fixed at 10 wt %, and acrylic PSA prepolymer was crosslinked at different concentrations of crosslinking agent. Peel strength and probe tack decreased as the concentration of crosslinking agent increased, as reported in previous studies. On the other hand, as the content of the crosslinking agent increased, recovery characteristics were improved. Additionally, as the content of the crosslinking agent increased, the storage modulus also increased, although the glass-transition temperature was not affected. According to these findings, we successfully proved the possibility of using AE to adjust adhesion performance and recovery of acrylic PSA for designing flexible displays.

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Section: Non-crosslinked Acrylic Psa/ae Blendscontrasting

confidence: 84%

Section: Of 13mentioning

confidence: 99%

Adhesion Performance and Recovery of Acrylic PSA with Acrylic Elastomer (AE) Blends via Thermal Crosslinking for Application in Flexible Displays

et al. 2019

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“…The SBSfamily has higher working range temperature and improved solvent resistance than butadiene-based rubbers [38]. SIS copolymers are similar to the SBS-family, exhibiting both elastic behaviour and thermoplastic properties [39]. Polystyrene (PS) groups that are dispersed throughout a network of rubbery polyisoprene (PI), provide the SIS structure with elasticity and the recovery properties of isoprene [39].…”

Section: Thermoplastic Elastomersmentioning

confidence: 99%

“…SIS copolymers are similar to the SBS-family, exhibiting both elastic behaviour and thermoplastic properties [39]. Polystyrene (PS) groups that are dispersed throughout a network of rubbery polyisoprene (PI), provide the SIS structure with elasticity and the recovery properties of isoprene [39]. SBR is used for numerous applications such as tires, footwear, belts and other industrial products [40].…”

Section: Thermoplastic Elastomersmentioning

confidence: 99%

High deformation multifunctional composites

Nunes-Pereira

Tubío

Dios

et al. 2021

Advanced Lightweight Multifunctional Materials

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“…The entanglement of the elastomer shows a positive effect on adhesion and recovery. However, the styrene groups of SIS elastomer cause the low transparency of OCA [56]. Campbell et al present the shear modulus of standard OCA, foldable OCA, and improved foldable OCA, and results of repetitive tension tests.…”

Section: Researches Of Oca For Flexible Displaymentioning

confidence: 99%

Pressure-Sensitive Adhesives for Flexible Display Applications

Lee¹,

Kim²,

Lee³

et al. 2020

Hybrid Nanomaterials - Flexible Electronics Materials

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Pressure-sensitive adhesives (PSA) have been used in electronics for not only attachment of two materials but also shock absorption, thermal and electrical conductivity, electromagnetic shielding, and optical property. Optically clear adhesives (OCA) have been used as a core material for optical performance of display. In addition to basic properties of OCA such as adhesion strength, transmittance, haze, and reliability, it has required dielectric constant, gap filling, and anticorrosion according to a substrate. However, the structural and functional changes of flexible display bring challenges to OCA that protects vulnerable components such as thin-film transistor, OLED, and thin-film encapsulation by stress dispersion and adjustment of a neutral plane. At the same time, flexibility and existing properties are essential. In this chapter, the development of components and performance of OCA, and evaluation methods will be discussed.

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Adhesion performance and recovery of acrylic pressure-sensitive adhesives thermally crosslinked with styrene–isoprene–styrene elastomer blends for flexible display applications

Cited by 22 publications

References 21 publications

Adhesion Performance and Recovery of Acrylic PSA with Acrylic Elastomer (AE) Blends via Thermal Crosslinking for Application in Flexible Displays

Adhesion Performance and Recovery of Acrylic PSA with Acrylic Elastomer (AE) Blends via Thermal Crosslinking for Application in Flexible Displays

High deformation multifunctional composites

Pressure-Sensitive Adhesives for Flexible Display Applications

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