Applications

LOCTITE® UK U-10FL – Ultra-Clear, Flexible Urethane Adhesive

  • Item Name: LOCTITE® UK U-10FL (formerly Hysol® U-10FL)

  • Manufacturer: Henkel

  • Technologies: Two-component urethane adhesive

  • Color: Ultra-clear (after mixing)

  • Cure Type: Room temperature cure (heat accelerates curing)

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product overview

LOCTITE® UK U-10FL is a two-component, low-viscosity urethane adhesive that cures at room temperature to form an ultra-clear and highly flexible bond line. It offers exceptional peel strength, non-yellowing transparency, and reliable dielectric performance. With a Shore D hardness of 45 and elongation of 170%, it combines clarity with toughness, making it suitable for demanding industrial use.


2. Applications

It is ideal for bonding polycarbonate, glass, metals, and various plastics. Typical uses include assemblies requiring a clear, flexible, and durable adhesive where resistance to impact, solvents, and environmental stress is critical. Its transparency makes it particularly suited for applications demanding non-yellowing aesthetics.

3. Typical Properties

Condition Property Value
Resin (Uncured) Chemical Type Polyisocyanate
Appearance Light-colored liquid
Specific Gravity 1.10 (range 1.0–1.2)
Viscosity @ 25 °C 10,000 cP (range 5,000–15,000)
Flash Point >202 °C
Hardener (Uncured) Chemical Type Polyol
Appearance Light-colored liquid
Specific Gravity 1.00 (range 0.95–1.15)
Viscosity @ 25 °C 1,150 cP (range 600–2,000)
Flash Point >93 °C
Mixture (Uncured) Appearance Ultra clear
Specific Gravity 1.05
Mix Ratio (R:H) 100:91 (by weight), 1:1 (by volume)
Working Life 10 min
Tack-Free Time 3–24 h
Cured Material Tensile Strength 490 psi
Elongation 170 %
Hardness Shore D 45
Dielectric Strength 400 V/mil
Glass Transition Temp. -20 °C
Shear Strength (5 d @ 22 °C) Aluminum (etched) 12.8 N/mm² (1850 psi)
Polycarbonate 10.8 N/mm² (1570 psi)
Epoxy 15.8 N/mm² (2290 psi)
Glass 2.4 N/mm² (350 psi)
ABS 2.0 N/mm² (290 psi)
PVC 7.8 N/mm² (1130 psi)
Stainless Steel 2.2 N/mm² (320 psi)

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BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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