Recent advances in silicone pressure-sensitive adhesives

Lin, Shaow B.; Durfee, Loren D.; Ekeland, Robert A.; McVie, James L.; Schalau, Gerald K.

doi:10.1163/156856107781192274

Cited by 78 publications

(49 citation statements)

References 8 publications

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“…Although a detailed characterization of the silicate filler structure is a complicated endeavor, three‐dimensional representations of the highly‐branched filler structure have been attempted . From a practical perspective, a shorthand nomenclature describing the connectivity of the

Si ‐ O

linkage is often implemented instead . The letters, M , D , T , and Q are used to illustrate the bonding of a single

Si

with one, two, three, or four oxygen atoms, respectively.…”

Section: Methodsmentioning

confidence: 99%

Fracture and thermal aging of resin‐filled silicone elastomers

Yeh

Dowland

Schmidt

et al. 2015

J Polym Sci B Polym Phys

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The role of nano-sized resin fillers on the fracture and viscoelastic behavior of silicones was examined in the context of thermal aging. Systems with different resin volume fractions and resin glass transition temperatures were compared. X-ray scattering patterns were collected over a wide range of q-values in order to provide insight into the physical structure of the silicone elastomers. Additionally, tensile, dynamic mechanical, and fracture tests were performed. Temperature shift factors obtained from the dynamic mechanical data were used to obtain master plots of the fracture toughness as a function of reduced crack velocity. The elastic modulus for each of the materials increased as a function of thermal aging time, and the high-temperature fracture behavior for each of the systems was reduced to values characteristic of unfilled systems after 14 days of aging at 200 8C. In order to obtain an accurate representation of the viscoelastic response of the materials in the megahertz frequency regime, quartz crystal resonators were used to measure mass changes and rheological properties after thermal aging. The results are consistent with a simple picture of dynamic heterogeneity, where high toughness requires that regions with different dynamic properties exist within the sample.

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Si ‐ O

linkage is often implemented instead . The letters, M , D , T , and Q are used to illustrate the bonding of a single

Si

with one, two, three, or four oxygen atoms, respectively.…”

Section: Methodsmentioning

confidence: 99%

Fracture and thermal aging of resin‐filled silicone elastomers

Yeh

Dowland

Schmidt

et al. 2015

J Polym Sci B Polym Phys

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show abstract

“…Alternative methods using cross‐linkable formulations have also been developed to create the silicone‐based PSAs. The cross‐linking of silicone adhesives can be accomplished by the peroxide‐initiated free‐radical reaction or Pt‐catalyzed addition reaction, depending on the type of reactive group in the silicones . The peroxide‐induced free radical cross‐linking reaction occurs efficiently at elevated temperatures (130–200 °C) .…”

Section: Introductionmentioning

confidence: 99%

Silicone‐Based Adhesives with Highly Tunable Adhesion Force for Skin‐Contact Applications

Lee

Ryu

Baek

et al. 2017

Adv Healthcare Materials

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A fundamental approach to fabricating silicone-based adhesives with highly tunable adhesion force for the skin-contact applications is presented. Liquid blends consisting of vinyl-multifunctional polydimethylsiloxane (V-PDMS), hydride-terminated PDMS (H-PDMS), and a tackifier composed of a silanol-terminated PDMS/MQ resin mixture and the MQ resin are used as the adhesive materials. The peel adhesion force of addition-cured adhesives on the skin is increased by increasing the H-PDMS molecular weights and the tackifier content, and decreasing the H-PDMS/V-PDMS ratio. There is an inverse relationship between the adhesion force and the Young's modulus. The low-modulus adhesives with a low H-PDMS/V-PDMS ratio exhibit enhanced adhesion properties. The low-modulus adhesives with the high MQ resin content show significantly enhanced adhesion properties. These adhesives exhibit a wide range of modulus (2-499 kPa), and their adhesion force (0.04-5.38 N) is superior to commercially available soft silicone adhesives (0.82-2.79 N). The strong adhesives (>≈2 N) provide sufficient adhesion for fixing the flexible electrocardiogram (ECG) device to the skin in most daily activity. The human ECG signals are successfully recorded in real time. These results suggest that the silicone-based adhesives should be useful as an atraumatic adhesive for the skin-contact applications.

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“…The most common reactive thermal crosslinkers are benzoyl peroxide (BPO) and dichlorobenzoyl peroxide (DClBPO). They allow the control of the crosslinking reaction by adjusting the peroxide, which determines the degree of crosslinking of the adhesive composition [5,9]. It is well known that silicone pressure-sensitives are being used for special applications.…”

Section: Introductionmentioning

confidence: 99%

Aging of silicone pressure-sensitive adhesives

2017

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Silicone pressure-sensitive adhesives (Si-PSA) exhibit unique properties, such as high Si-O-Si backbone flexibility, low intermolecular interactions, low surface tension, excellent thermal stability, and high UV transparency, which often explains why silicone PSAs have an impressive performance at high-and lowtemperature extremes, excellent electrical properties, chemical resistance, and outstanding weathering resistance turning them superior compared to organic PSAs. It is well known that due to their unique properties, silicone pressure-sensitive adhesives are materials for special applications. In the present study, we focus on changing the useful properties of the best compositions of silicone pressure-sensitive adhesives in time to verify the impact of aging on them. The influence of time on given silicone pressure-sensitive adhesive tapes and their useful properties is a very important factor for the description of the life-time of potential products based on such compositions. Aging of Si-PSA was carried out for 1 h, 24 h, 7 days, 31 days, and 92 days. The tests did include such properties like adhesion, cohesion (at 20 and 70°C), tack, and yellowness.

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Recent advances in silicone pressure-sensitive adhesives

Cited by 78 publications

References 8 publications

Fracture and thermal aging of resin‐filled silicone elastomers

Fracture and thermal aging of resin‐filled silicone elastomers

Silicone‐Based Adhesives with Highly Tunable Adhesion Force for Skin‐Contact Applications

Aging of silicone pressure-sensitive adhesives

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