PERMABOND UV643

Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide

PERMABOND UV643

Main features

  • Sub-Second High-Intensity Fixture
  • Thixotropic Rigid-Plastic Bonding
  • Hot-Wet Strength Retention

Product Description

Permabond UV643 is a thixotropic, extremely fast urethane-acrylate adhesive for UV bonding of rigid plastics and metal-to-plastic assemblies. It cures tack-free across 365 to 420 nm and bonds polycarbonate, PMMA, PETG, PET, ABS, and rigid PVC under the specified process conditions. Typical fixture time is under 1 second with the listed 330 mW/cm^2 mercury lamp or 400 nm, 150 mW/cm^2 LED, and 19 seconds at 0.1 mW/cm^2. Cured data include 23 N/mm^2 tensile strength, 50% elongation, and retained polycarbonate shear strength after four weeks at 85 deg C and 85% RH.

Key features

  • Thixotropic Application Control: Viscosity is 2,000 mPa s at 20 rpm and 17,600 mPa s at 2 rpm.
  • Sub-Second High-Intensity Fixture: Typical fixture time is under 1 second with the listed high-intensity UV lamp conditions.
  • Hot-Wet Strength Retention: Polycarbonate shear strength remained 13 N/mm^2 after four weeks at 85 deg C and 85% RH.

Applications

Applications include fast bonding of PC, PMMA, PETG, PET, ABS, rigid PVC, and supported metal-to-plastic combinations.

Product Family

PERMABOND UV643

Loading pricing…
TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Pale yellow (colourless when cured)
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.0
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
2000 | 17,600 mPa.s
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
50 %
Chemical Properties
Water Absorption
5 %
Other Properties
Storage Temperature
5 - 25 °C
Thermal Properties
Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding. The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
83 °C

Additional Information

Technical properties

As-supplied / before-processing properties

Fixture time depends on lamp output, distance, and substrate transmission.

Property Value Unit Method / condition
Chemical compositionUrethane acrylateAs supplied
AppearancePale yellowColorless when cured
Viscosity2,000mPa sAt 25 deg C; 20 rpm
Viscosity17,600mPa sAt 25 deg C; 2 rpm
Specific gravity1.0As supplied
Typical fixture time<1 to 19secondsListed UV lamp conditions
Cure wavelength365 to 420nmMatch lamp output to the photoinitiator
Technical properties

After-processing / final-state properties

Values are typical cured properties for the stated methods and substrates.

Property Value Unit Method / condition
Overlap shear strength - polycarbonate13N/mm^2Substrate failure observed
Overlap shear strength - acrylic7N/mm^2Typical cured value
Overlap shear strength - aluminum to PC10N/mm^2Typical cured value
Tensile strength23N/mm^2ASTM D638
Elongation at break50%ASTM D638
Elastic modulus1.2GPaASTM D638
Hardness65Shore DISO 868
Polycarbonate shear after hot-wet aging13N/mm^24 weeks at 85 deg C and 85% RH; tested at 23 deg C

Leading Brands Trust in Our Products and Services

Products that Perform| Knowledge that Serves| Service that Delivers