Nanoparticle filled barrier adhesive compositions
A nanoparticle and composition technology, which is applied in the direction of film/flaky adhesives, non-polymer adhesive additives, adhesives, etc., can solve the problem of damage to the flexibility of devices, and achieve the effect of improving barrier properties
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[0072] Example
[0073] The following examples further explain the purpose and beneficial effects of the present invention, but the specific materials, amounts and other conditions and details listed in these examples should not be construed as improper limitations on the present invention. Unless otherwise specified, all parts, percentages and ratios mentioned in the following examples are by weight. Unless otherwise specified, reagents were purchased from Sigma Aldrich Company (St. Louis, MO) in St. Louis, Missouri.
[0074] Table 1: Materials and sources .
[0075]
[0076]
[0077] Optical properties
[0078] The transmittance, clarity, and haze data were obtained using BYK Gardner Haze-Gard Plus (BYK-Gardner USA, Inc., Columbia, MD).
[0079] Moisture barrier test
[0080] By laminating the barrier component to glass deposited with elemental calcium to produce a sample, the ability of the barrier component to prevent the transportation of moisture or water vapor was tested. T...
Example Embodiment
[0089] Preparation Example 1: Polyisobutylene-based adhesive mixture
[0090] Cut large pieces of Oppanol B80 and Oppanol B50SF polyisobutylene polymer resin into approximately 1 inch (2.5 cm) cubes. These weighed resin cubes were then mixed with Escorez 5300 tackifier in toluene in a covered glass jar. The weight ratio of the binder mixture is two parts Oppanol B80, one part Oppanol B50SF and one part Escorez 5300 in sufficient toluene to provide a 25% by weight solution. The resulting formulation was mixed using a roller mixer for 2 weeks until the solution was homogeneous.
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[0091] Preparation Example 2-4: Nanoparticle dispersion
[0092] The nanoparticles were calcium oxide nanopowder (CaO) and Claytone APA ("clay"), which were added to toluene in the weight ratio provided in Table 2. The nanoparticles were directly added to toluene at 5 wt% solids, and then a Sonics VibraCell VCX750 ultrasonic system (Sonics & Materials Inc., Newtown, CT) was used at 18%-20% amplitude. Disperse for 20 minutes.
[0093] Table 2: Ratio of nanoparticles in the dispersion used in this work .
[0094]
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