Applications

Everwide FR525-2 Photo-Curing Adhesive for Lens Focus Bonding

Brand: Everwide
Product Number: FR525-2
Technology: Photo-Curing Acrylic Adhesive
Color: Light Yellow
Cure Type: UV Curing
Package Size: Contact us for details
Shelf Life: 1 year

Product Description

Everwide FR525-2 is a UV-curable adhesive designed for lens and lens holder bonding applications. It provides fast curing, excellent toughness, and high thermal shock resistance. The cured resin exhibits strong adhesion even after environmental aging tests and is suitable for fixing illumination point sources in optical systems.

Key Features

  • Fast curing under UV light (365 nm)
  • High toughness, shock resistance, and thermal shock resistance
  • Strong adhesion to plastics
  • Reworkable without resin residue
  • Complies with 2011/65/EU RoHS regulations
  • Meets chlorine < 900ppm, bromine < 900ppm, chlorine + bromine < 1500ppm limits

Recommended Applications

  • Lens and lens holder bonding
  • Fixing illumination point sources in optical systems
  • Plastic-to-plastic bonding in optical applications

Technical Data

Typical Uncured Properties
Property FR525-2
Chemical Composition Acrylic Resin
Appearance Liquid
Color Light Yellow
Viscosity (25°C, S14 100rpm, cps) 7,800–13,000
Thixotropic Index ≥3.2
Specific Gravity (25°C) 1.08
Solvent Content 0%
Heavy Metal Content 0%
Curing Properties
Curing Equipment Recommended Wavelength (nm) Minimum Light Intensity (mW/cm²) Minimum Light Energy (mJ/cm²)
Mercury / Halogen Lamp 310–420 >50 >5,000
LED Light 365 / 395 >50 >5,000
Typical Cured Properties
Property Value
Glass Transition Temperature (Tg) (TMA) 39.03°C
CTE (<Tg), µm/m/°C 70.29
CTE (>Tg), µm/m/°C 370.8
Durometer Hardness (Shore D) 71
Elongation at Break 144.15%
Breaking Strength 11.78 MPa
Shear Strength (Glass vs. Glass, 25°C) 77.21 kgf/cm²
Shear Strength (PC vs. Glass, 25°C) 99.64 kgf/cm²

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