PERMABOND UV639 UV-Curable Adhesive

PERMABOND® UV639 is a UV-curing adhesive developed for use on plastics. It has superb adhesion to acrylic, polycarbonate and PETG. This adhesive can also be used to bond glass, metals and other materials. UV639 cures to give a colourless bond so is ideal for applications where aesthetic appearance is vitally important.

FEATURES:

Cure on demand
Highly transparent
Excellent adhesion to plastics
High elongation
Low shrinkage

Physical Properties of Uncured Adhesive

Chemical composition	Urethane methacrylate
Appearance	Colourless, clear
Viscosity @ 25°C	20rpm: 1,200-1,800 mPa.s (cP)

Typical Curing Properties

Typical fixture time (PMMA)*	Low power 4mW/cm² battery lamp: 5secs LED 200mW/cm² lamp: <1s
Typical fixture time (Polycarbonate)*	Low power 4mW/cm² battery lamp: 10secs
Cure wavelength	365 – 420 nm**

Typical Performance of Cured Adhesive

Overlap shear strength (ISO4587)	Polycarbonate >8 N/mm² (>1160 psi)* Acrylic >6 N/mm² (>870 psi)* PET-G >7 N/mm² (>1015 psi)* PET >5 N/mm² (>725 psi)*
Block shear strength (ASTM D4501)	PMMA/Glass >8 N/mm² (>1160 psi)* PMMA/PMMA 6 N/mm² (870 psi)**
Tensile strength (ISO37)	20 N/mm² (2900 psi)
Elongation at break (ISO37)	>220%
Hardness (ISO868)	35-45 Shore D
Water absorbtion (ISO62) 2 hours in boiling water	14%
Glass transition (Tg)	70°C (158°F)

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