LOCTITE SI 5083

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

LOCTITE SI 5083

Main features

  • 0 mm ISO 7390 Flow
  • At Least 170% Cured Elongation
  • 25 kV/mm Dielectric Strength

Product Description

LOCTITE SI 5083 is a one-component acetoxy silicone for potting, coating, gasketing, and sealing. UV light initiates cure in exposed material, while atmospheric moisture continues cure in shadowed regions. The thixotropic paste records 0 mm flow by ISO 7390 and an extrusion rate of 130 to 170 g/min under the stated cartridge test. Under the documented cured-material conditions, key properties include Shore A hardness 45 to 65, at least 170% elongation, tensile strength of at least 3.1 N/mm^2, and dielectric breakdown strength of 25 kV/mm.

Key features

  • Dual-Cure Mechanism: UV light initiates cure in exposed areas, while atmospheric moisture continues cure in shadowed regions.
  • Thixotropic Flow: Records 0 mm flow by ISO 7390.
  • Electrical Insulation: Cured dielectric breakdown strength is 25 kV/mm by IEC 60243-1 under the stated test conditions.

Applications

Potting; coating; gasketing; sealing in electronic and industrial assemblies.

Product Family

LOCTITE SI 5083

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Technical Specifications

General Properties
Solids
95 %
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.
1.12
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.
170 %

Additional Information

Technical properties

As-supplied / before-processing properties

Typical values unless identified as LMS in the Method / condition column.

PropertyValueUnitMethod / condition
Specific gravity1.12-25 deg C; typical
Non-volatile content>=95%LMS
Flow0mmISO 7390
Extrusion rate130 to 170g/minLMS; 0.6 MPa, 15 seconds, 25 deg C, Semco cartridge
Technical properties

After-processing / final-state properties

Cured-material data after 40 mW/cm^2 at 365 nm for 60 seconds per side plus 7 days at 22 deg C / 50% RH; LMS-controlled rows are identified in the Method / condition column.

PropertyValueUnitMethod / condition
Shore hardness45 to 65Shore AISO 868; LMS
Elongation>=170%ISO 37; LMS
Tensile strength>=3.1N/mm^2ISO 37; LMS
Volume resistivity9.7x10^15ohm cmIEC 60093
Dielectric breakdown strength25kV/mmIEC 60243-1

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