Usage Scenarios
Automotive Outgas-Dissipate Optically Clear Adhesive OpticPBTM 28520(500um)，for full lamination of PC/PMMA composite cover plates in automotive touch displays
OPBTM 285 Series
Heat Resistance & Gas Dissipate Automotive OCA
Outgas-Dissipate Optically Clear Adhesive
OpticPBTM 28520 (500um)
Acrylic-Based Optically Clear Adhesive
The adhesive features excellent breathability with a higher moisture vapor transmission rate than standard commercial products. It offers strong adhesion and helps suppress substrate warpage. Suitable for bonding optical components such as PC/PMMA composite cover plates and light guide plates. Effectively resolves issues such as bubbles and delamination caused by outgassing of rigid plastic components under high temperatures.
Applications
PC/PMMA composite cover plate bonding — OpticPB™ 28520 (500 µm)
Structure
Typical Properties
| Item | Unit | OPBTM-28520 |
|---|---|---|
| Thickness | µm | 500 |
| Thickness(TT) | % | 90.3 |
| Color(L*, a*, b*) | - | 96.0, -0.4, 0.4 |
| Haze | % | 0.2 |
| Yellowness Index(YI) | - | 0.5 |
| Storage Modulus(G') | kPa | 110 |
| Peeling Force | Kgf/inch | 3.0 |
Reliability Properties
Full-Spectrum Xenon Aging Performance
Optical Test Specimen Structure: PC composite sheet 1.0 mm / Optical adhesive 0.5 mm / Glass 0.7 mm
Appearance Test Specimen Structure: PC composite sheet 1.0 mm / Optical adhesive 0.5 mm / Polarizer 0.1 mm / Glass 0.7 mm
Test Equipment: Q-Lab Q-sun XE-3 Xenon Test Chamber
| Aging Condition | Optical Changea | Appearanceb |
|---|---|---|
| 105˚C, 1000h |
Δ Haze < 1, Δ YI < 1 |
no bubbles, |
| -40˚C, 1000h | ||
| 85˚C/85%RH, 1000h | ||
| -40~85˚C, 1000 Cycles | ||
|
aOptical test specimen: Glass/OCA/Glass, size 4×4 cm²：Glass/OCA/Glass，尺寸 4×4 cm² |
||
| Test Condition/Time | Cycles | Judgement |
|---|---|---|
| Irradiance: 0.99(m2/nm)@420nm, BST: 100±3oC, Chamber: 65±3oC , < 30% RH (16hr) Irradiance: -W/m2, BST: 20±3oC, Chamber: 20±3oC, > 55% RH (8hr) |
Dry 15 Cycles | Optical change: Δb* < 1, ΔHaze < 1 Appearance PASS, no bubbles, no delamination |
| Irradiance: 0.99(m2/nm)@420nm, BST: 100±3oC, Chamber: 65±3oC , > 50% RH (12hr) Irradiance: -W/m2, BST: 20±3oC, Chamber: 20±3oC, dew accepted(12hr) |
Dry 15 Cycles |
Pack Sizes
- 500 µm × 1200 mm × 100 m / roll
- Customized slitting sizes available
