PERMABOND UV7141

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

PERMABOND UV7141

Main features

  • Shadow-Area Anaerobic Cure
  • Second-Scale UV Fixture
  • High-Transmittance Glass Bonding

Product Description

Permabond UV7141 is a colorless, dual-cure methacrylate adhesive that combines rapid UV fixture with secondary anaerobic cure in shadowed areas. It is intended for ceramic-coated glass, mirrors, glass, and metal assemblies where light cannot reach the complete bondline. Typical UV fixture time ranges from 1 to 20 seconds under the listed lamp conditions, followed by anaerobic handling strength in 30 to 60 minutes and working strength in 3 to 6 hours. The cured adhesive provides 14 to 17 N/mm^2 steel-to-glass tensile strength, more than 98% light transmittance, and 60 to 70 Shore D hardness.

Key features

  • Shadow-Area Anaerobic Cure: Secondary anaerobic cure develops in bondline areas not reached by UV light.
  • Second-Scale UV Fixture: Typical UV fixture time is 1 to 20 seconds under the listed lamp conditions.
  • High-Transmittance Glass Bonding: The cured adhesive provides more than 98% light transmittance.

Applications

Applications include bonding ceramic-coated glass, mirrors, glass, and metal where UV fixture and secondary anaerobic cure are required.

Product Family

PERMABOND UV7141

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Colorless
Refractive index
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.
1.490
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.
1.1
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
1200-1700 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.
20-50 %
Other Properties
Storage Temperature
5 - 25 °C
Electrical Properties
Dielectric Strength
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.
10-12 kV/mm

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 compositionMethacrylate esterAs supplied
AppearanceColorlessAs supplied
Viscosity1,200 to 1,700mPa sAt 25 deg C; 20 rpm
Specific gravity1.1As supplied
Typical UV fixture time1 to 20secondsListed UV lamp conditions
Cure wavelength365 to 420nmMatch lamp output to the photoinitiator
Anaerobic handling time30 to 60minutesShadow-area cure
Anaerobic working strength3 to 6hoursShadow-area cure
Technical properties

After-processing / final-state properties

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

Property Value Unit Method / condition
Steel-to-glass tensile strength14 to 17N/mm^2ASTM D2095-69
Tensile strength20N/mm^2ISO 37
Refractive index1.490Cured adhesive
Light transmittance>98%Cured adhesive
Elongation20 to 50%ISO 37
Hardness60 to 70Shore DISO 868
Dielectric strength10 to 12kV/mmTypical cured value
Coefficient of thermal expansion85 x 10^-6mm/mm/deg CTypical cured value

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