UV-curing adhesives have long been a key tool for improving production line efficiency in precision rotating component manufacturing, motor rotor dynamic balancing, and sensor packaging, thanks to their second-level curing speed. However, the industry has long faced a tough technical pain point: the “incomplete curing” issue of white/thick-layer UV adhesives.
When the adhesive layer exceeds 3mm, traditional white UV adhesives often suffer from surface hardening but residual soft adhesive at the bottom. This not only causes a sharp drop in bonding strength but also hides quality risks such as falling off and imbalance for long-term product operation.
Today, ELAPLUS officially launches UV1020 UV curable acrylic dynamic balancing adhesive. With its breakthrough deep-layer curing technology, it completely breaks the performance bottleneck of thick-layer white UV adhesives, becoming a veritable “top-tier” product in industrial applications.
I. Core Pain Point: Why Do Thick-Layer White UV Adhesives Cure Incompletely?
In the field of UV curing, curing depth depends on energy density and optical transmittance.
To achieve visual opacity, traditional white UV adhesives are usually formulated with high-concentration light-shielding fillers (such as titanium dioxide). These fillers block visible light, while also strongly scattering and absorbing UV light. As a result, UV light cannot penetrate deeper than 3mm, failing to activate the photoinitiator at the bottom layer.
For high-precision balanced motor rotors or thick-layer packaged sensors, this incomplete curing directly leads to bonding failure.
II. Technical Breakthrough: 20000mJ/cm² Energy Input, Unlocking the 5mm Curing Limit
The success of ELAPLUS UV1020 stems from in-depth insights into “energy for depth” and “optical system reconstruction”:
High-Energy Curing System
UV1020 recommends a curing energy of 20000mJ/cm² (based on 365nm LED light source), which is 2-4 times that of ordinary UV adhesives. Coupled with an optimized photoinitiator formula, it ensures thorough free radical reaction at the bottom layer even at a thickness of 5mm.
Optimized Optical System & Refractive Index
Unlike ordinary white adhesives, UV1020 maintains a white appearance while achieving high light transmittance and a high refractive index of 1.6 by controlling filler particle size distribution. This minimizes UV scattering loss inside the adhesive, laying a physical foundation for deep-layer curing.
Self-Leveling Application Performance
UV1020 features a unique rheological design with a thixotropic index of 1.3. It self-levels automatically after dispensing from a syringe, requiring no manual scraping to form a uniform thickness, ensuring even absorption of curing energy across all layers.
III. Structural Performance Parameters: Hardcore Strength Verified by Data
| Parameter | Typical Performance Index | Core Advantage Interpretation |
| Curing Depth | ≥ 5mm | Far exceeding the industry average limit of 2-3mm |
| Curing Energy | 20000mJ/cm² | Ensures full deep-layer curing, no incomplete curing |
| Metal Shear Strength | ≥ 10MPa | Industrial-grade structural bonding, stable and reliable |
| Density | 1.9 – 2.0g/mL | High specific gravity and filler content, improving dynamic balancing efficiency |
| Refractive Index | 1.6 | Excellent optical performance, combining opacity and light transmittance |
| Application Property | Self-Leveling | Reduces labor cost, compatible with automatic dispensing |
| Water Absorption | ≤ 1% | Excellent aging resistance and environmental stability |
IV. Full Scenario Application: The Balancing Solution for High-End Manufacturing
With exceptional deep-layer curing and bonding performance, ELAPLUS UV1020 is widely used in the following high-end fields:
- Precision Motors & Fans: Counterweight and positioning for drone motors, mobile phone camera micro motors, and high-performance server cooling fans.
- Precision Sensor Packaging: Solves the potting challenge of 3-5mm gaps between sensor housings and internal components.
- Electric Vehicle (EV) Systems: Structural reinforcement and bonding for electronic control modules and BMS battery management systems.
- AI Servers & High-Power Modules: Provides stable structural support in high-heat and high-vibration environments.
3-5mm thickness + 20000mJ/cm² curing energy + high light transmittance + self-leveling + 10MPa metal bonding — UV1020 is the top performer of white UV dynamic balancing adhesives!
