PERMABOND UV6231
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Optically Clear Glass and Crystal Bonding
- 2-Second LED Fixture
- Humidity-Resistant High-Elongation UV Bond
Product Description
Permabond UV6231 is a single-part optically clear UV-curable adhesive for glass, crystal and glass-to-metal assemblies. It cures across 365-400 nm and reaches typical fixture in 2 seconds under a 100 mW/cm2 LED source; cure time varies with lamp output, distance and substrate transmission. After cure, typical steel-to-glass tensile strength is 10 N/mm2 and elongation exceeds 120%. After 500 hours at 70 deg C and 90% relative humidity, steel-to-glass tensile strength is 6-7 N/mm2. The adhesive is used in bathroom-type and outdoor assemblies requiring moisture, humidity and weathering resistance.
Key features
- Optically clear glass and crystal bonding: The cured adhesive remains clear and resists yellowing for glass and crystal assemblies.
- 2-second LED fixture: Typical fixture is 2 seconds under a 100 mW/cm2 LED source; actual cure time depends on the UV setup and substrate transmission.
- 500-hour humidity-conditioned strength: Steel-to-glass tensile strength is 6-7 N/mm2 after 500 hours at 70 deg C and 90% relative humidity.
Applications
Glass and crystal bonding; glass-to-metal bonding; bathroom-type assemblies; outdoor assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Colourless, clear
Appearance at room temperature.
Chemistry Type
Methacrylate ester
Refractive index
1.490
The refractive index determines how much the path of light is bent, or refracted, when entering a material. It is calculated by taking into account the velocity of light in vacuum compared to the velocity of light in the material.
The refractive index calculation can be affected by the wavelength of light and the temperature of the material. Even though it is usually reported on standard wavelengths it is advised to check the TDS for the precise test parameters.
Specific Gravity
1.1
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.
Physical Properties
Viscosity
5,000-8,000 mPa.s
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
Mechanical Properties
Elongation
120 %
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.
Electrical Properties
Dielectric Strength
12 kV/mm
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material.
Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property.
As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
Additional Information
Technical properties
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical composition | Methacrylate ester | - | Uncured adhesive |
| Appearance | Colorless, clear | - | Uncured adhesive |
| Viscosity at 20 rpm | 5,000-8,000 | cP | 25 deg C |
| Specific gravity | 1.1 | - | Uncured adhesive |
| Cure wavelength | 365-400 | nm | UV cure |
Technical properties
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Steel-to-glass tensile strength | 10 | N/mm2 | Typical cured joint; ASTM D-2095-69 |
| Elongation | >120 | % | Typical cured adhesive; ISO 37 |
| Hardness | 45-50 | Shore D | Typical cured adhesive; ISO 868 |
| Humidity-conditioned tensile strength | 6-7 | N/mm2 | Steel to glass; 500 h at 70 deg C / 90% RH; ASTM D-2095-69 |
