Ever Ray
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In the realm of precision bonding and composite material innovation, Polyurethane Acrylate 72021E stands as a benchmark in structural adhesives, plastic sheet bonding, and UV-curable adhesives. With its exceptional toughness, high strength, and superior multi-substrate adhesion, it provides a balanced and reliable solution for industrial manufacturing.
A flexible molecular chain design grants the adhesive an elongation at break of >200% (ASTM D638), enabling it to withstand thousands of bends and high-frequency vibrations. This makes it ideal for foldable smartphone hinge bonding and automotive interior composite films, effectively eliminating the brittleness and fracture issues of conventional adhesives.
With a tensile strength exceeding 25 MPa (ISO 527) and shear strength ≥18 MPa (ASTM D1002), 72021E outperforms standard polyurethane adhesives, making it suitable for structural bonding in construction and heavy-duty equipment sealing. It ensures a seamless, long-lasting interface under sustained mechanical stress.
Achieving a 5B adhesion rating (ASTM D3359) on metals (aluminum, steel), engineering plastics (PC, ABS), glass, and composite films, 72021E forms molecular-level interlocking bonds without the need for primers. It is widely applied in EV battery sealing, UV curing for electronic components, and decorative film lamination, overcoming the challenges of heterogeneous material bonding and delamination.
From the sleek designs of consumer electronics to the high-load demands of industrial equipment, 72021E redefines the reliability standard for multi-substrate bonding. With its spring-like flexibility, steel-like strength, and limitless adhesion, it serves as the invisible bridge that enhances both production efficiency and long-term durability.
| Parameter | Value / Specification |
|---|---|
| Resin type | Polyurethane Acrylate 72021E |
| Appearance | Transparent viscous liquid |
| Viscosity (mPa.s) | 3000~7000 (25℃) |
| Functionality | 2 |
| Chrominance (Pt-Co) | ≤150 |
| Acid value (mgKOH/g) | 0 |
Structural adhesives, plastic sheet bonding, and UV-curable adhesives.
| Category | Details |
|---|---|
| Packaging | 20 / 220 (kg) |
| Warranty period | 180 days |
| Storage | This product should be stored and transported in dark opaque steel drums or containers containing corrosion-resistant and solvent resistant coatings. Leave at least 15% space inside the container filled with air. Packaging should be stored in a cool environment below 35 ℃, and exposure to sunlight is strictly prohibited. |
