In full lamination fields such as touchscreens, LCDs, and automotive displays, the four-dimensional performance of "transmittance — yellowness index — curing shrinkage — reworkability" of optical adhesives has always been the core contradiction restricting display quality and lamination yield. Traditional OCA (Optically Clear Adhesive) tapes require die-cutting and alignment, prone to bubbles in large-size lamination and impossible to rework; conventional acrylic liquid optical adhesives (OCR), while dispensable, suffer from high curing shrinkage (usually >3%), causing screen Mura (display unevenness), and poor UV aging resistance, yellowing and darkening after long-term exposure. With the popularization of narrow bezels, large sizes, high refresh rates, and stringent automotive display weather resistance requirements, demands for "transmittance ≥99%, yellowness index <0.1, shrinkage <0.1%, reworkable gel state" continue to upgrade. Sourcing a "two-component UV-curable, low-viscosity, high-transmittance, low-shrinkage" silicone liquid optical adhesive has become the core gap for domestic new display material autonomy. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches IOTA 5220AB UV-Curable Silicone Liquid Optical Adhesive. Characterized by "two-component UV-curable liquid silicone rubber, gel after curing; Component A colorless transparent, viscosity 2200mPa·s, Component B colorless transparent, viscosity 1000mPa·s, mixed viscosity 2200mPa·s, density 0.97g/ml; mixing ratio 10:1, pot life 48h (25℃ dark); curing: UV-LED 365nm 3000mj/cm² + 60℃/30min; after curing: colorless transparent gel, yellowness index <0.1, transmittance 99%, haze <0.1%, penetration 95, refractive index 1.407, shrinkage <0.1%, G+G adhesion 0.5MPa; A:5kg/drum, B:0.5kg/can; storage 6 months at 15~35℃", backed by "UV-initiated hydrosilylation + oligomer flexible backbone + high-purity optical fillers", it serves as the "optical gel" for touchscreen lamination, achieving the leap from "acrylic OCR high-shrinkage yellowing" to "silicone UV gel high-transmittance low-shrinkage". System Positioning: UV Silicone Optical Gel vs. Traditional OCA/OCR IOTA 5220AB belongs to the UV-curable silicone liquid optical adhesive system, distinct from traditional OCA tapes and acrylic OCR. OCA is a solid tape requiring die-cutting, unsuitable for irregular and large sizes, with bubbles hard to eliminate and non-reworkable; acrylic OCR has good filling but high shrinkage causes Mura, and poor weather resistance leads to yellowing. UV-curable silicone liquid optical adhesive combines silicone's low shrinkage (<0.1%), excellent weather resistance, and efficient UV curing. After curing, it forms a gel state (penetration 95) with both cohesion and reworkability, thoroughly avoiding the application shortcomings of traditional materials. Molecular Architecture: UV-Thermal Dual Curing + Gel Flexible Network + High-Purity Optical Design The core competitiveness of IOTA 5220AB stems from its precision formulation architecture:

• UV-LED Photoinitiation + Thermal Curing Dual Engine: Component A contains vinyl polysiloxane and photoinitiator, Component B contains Si-H crosslinker and platinum catalyst. UV irradiation (365nm, 3000mj/cm²) triggers photopolymerization for rapid shaping, followed by 60℃/30min heating to promote hydrosilylation deep crosslinking, ensuring complete curing with shrinkage <0.1%.
• Gel Flexible Network Absorbs Impact: After curing, it forms a colorless transparent gel with penetration 95, providing sufficient cohesion (G+G adhesion 0.5MPa) while maintaining high elasticity to absorb drop impact and relieve thermal stress, protecting brittle glass substrates.
• High-Purity Optical Low Surface Energy Design: Refractive index 1.407 matches glass (~1.5), transmittance 99%, haze <0.1%, yellowness index <0.1%, ensuring no color distortion. Surface tension 24.0mN/m gives excellent substrate wettability, automatically filling micro-gaps and eliminating air to avoid white spots.

Performance Leap: From "High-Shrinkage Mura" to "High-Transmittance Low-Shrinkage Reworkable" Introducing IOTA 5220AB brings a qualitative leap to full lamination:

• Ultimate Optical Performance: Transmittance 99%, haze <0.1%, yellowness index <0.1%, long-term UV aging resistance without yellowing, ensuring lasting clarity for automotive and outdoor displays.
• Ultra-Low Shrinkage No Mura: Shrinkage <0.1%, almost no volume change during curing, thoroughly eliminating Mura defects from uneven stress.
• Gel State Reworkable: Penetration 95 gel state can be easily peeled off for rework, reducing screen loss costs from lamination defects.
• Excellent Dielectric and Thermal: Relative permittivity 2.85, thermal conductivity 0.2W/m·K, balancing signal transmission and micro-heat dissipation.
• Long Operation Time: 48h pot life at 25℃ dark, meeting mass production节拍 and complex dispensing needs.

Application Penetration: From Mobile Touch to Automotive Large Screens The application boundary covers all display lamination scenarios requiring "high transmittance + low shrinkage + weather resistance":

• Touchscreen and Automotive Display Lamination (Main Battlefield): G+G (glass-to-glass), G+F (glass-to-film) lamination for mobile phones, tablets, automotive center consoles, instrument clusters.
• LCD Displays: Optical lamination between LCD modules and cover glass, enhancing contrast and outdoor visibility.
• New Displays: Foldable screens, curved screens, irregular screens requiring high-elasticity buffering optical bonding.

IOTA Technical Guide: 10:1 Mixing, UV+Thermal Dual Curing

• Application: Mix A:B at 10:1 weight ratio; stir each before use; dispense under dark within 48h; UV-LED (365nm) 3000mj/cm² for shaping, then 60℃/30min for deep curing.
• ⚠️ Taboo: All bonding surfaces must be clean and dry; strictly avoid contact with P, S, N, organotin, water, polyurethane, etc. to prevent curing inhibition; use dedicated tools to avoid cross-contamination.
• Storage: Store in original packaging at 15~35℃ for 6 months; A:5kg/drum, B:0.5kg/can.
• Handling: Test compatibility with LCM and TP before lamination; store at 25℃ for 7 days after curing before environmental testing.

Industry Insight: In new display lamination materials, the molecular architecture of UV-curable silicone liquid optical adhesive — "UV-thermal dual curing + gel flexible network + high-purity optical design" — is the key path to achieving the four-in-one of "high transmittance, low shrinkage, yellowing resistance, reworkability" — UV curing solves the industry pain point of silicone room-temperature slow curing, while the gel design ends the application dilemma of traditional OCR: "high shrinkage Mura + non-reworkable". IOTA 5220AB, with "two-component UV-curable + transmittance 99% + shrinkage <0.1% + yellowness <0.1% + penetration 95" hard metrics, fills the key supply chain link for domestic UV-curable silicone liquid optical adhesives in touchscreen and automotive display lamination, providing a mass-producible high-performance solution for downstream display module factories and automotive electronics enterprises. This confirms domestic optical adhesives are leaping toward "OCA tape → acrylic OCR → UV-curable silicone gel", with growing technical say in new display fields.