OPTOLINQ LE-5031HY | Two part epoxy resin

Harmonization Code : 3907.30.00.90 |   Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms : Epoxide resins : Other
Main features
  • Low viscosity
  • High transparency
  • Excellent solvent, aging, anti yellowing, and thermal resistance

Product Description

OPTOLINQ LE-5031HY is a low-viscosity, two-part, halogen-free epoxy resin with high transparency and a high-gloss finish. It offers robust stability in acidic and alkaline environments, good anti-aging properties, high durability even under extreme temperatures, and superior scratch and abrasion resistance. For specific color requirements, LE-5031HY can be customized using color or opaque pastes. The LE-5031HY is the anti-yellowing resistant version of LE-5031

OPTOLINQ LE-5031HY is a suitable coating for metal and polymer surfaces, providing a polished finish and excellent surface integrity. It is the preferred choice for coating solar cell panels, transparent potting of electronic components for insulation and moisture-proofing, high-voltage coil potting, and room temperature potting of capacitors and transformers. LE-5031HY complies with ROHS and REACH standards, offering a reliable solution for encapsulation and sealing applications.

Cure Schedule

  • 24h @ 25°C
  • 2-4h @ under 60C°
  • 1h @ 100°C
Product Family
LE-5031HY  
5kg barrel - Part A 5kg barrel - Part B

Catalog Product

Unlike other products we offer, the products listed on this page cannot currently be ordered directly from the website.
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Packaging
TDS, SDS & Technical documents

Technical Specifications

General Properties
Mix Ratio
Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture
 3:1
Pot Life
Pot Life
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed.

It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.
 1 hours
Shelf Life
Shelf Life
Shelf life is the amount of time after manufacturing that a product is guaranteed to retain its properties.

It differs vastly per product and it is based on temperature and storage conditions.

The properties can be guaranteed for the temperature and time range indicated on the TDS since those are the ones tested to be the best for the product.
Shelf Life @ 25°C 183 days
Physical Properties
Viscosity
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
 449 mPa.s
Chemical Properties
Water Absorption 0.15 %
Electrical Properties
Dielectric Strength
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.
 12–18 kV/mm
Surface Resistivity >1.5×10¹⁵ Ohms/sq
Volume Resistivity
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
 >1.6×10¹⁵ Ohms⋅cm
Mechanical Properties
Hardness
Hardness
Hardness is a dimensionless quantity. There is no direct relationship between measurements in one scale and their equivalent in another scale or another hardness test.
Durometer (Shore D) 72
Elongation
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.
 3.6 %
Flexural Strength
Flexural Strength @ 25°C
Flexural Strength @ 25°C
Flexural strength, also known as modulus of rupture, or bend strength, or transverse rupture strength is a material property, defined as the stress in a material just before it yields in a flexure test. This is the flexural strength tested at Room Temperature, 25°C
 132 N/mm2
Tensile Strength
Tensile Strength
The tensile strength of a material is the maximum amount of tensile stress that it can withstand while being stretched or pulled before failure.

Some materials break very sharply, without plastic deformation, in what is called a brittle failure. Others, which are more ductile, including most metals, experience some plastic deformation and possibly necking before fracture.
Tensile Strength
Tensile Strength
Tensile strength determines the resistance of a material to break under tension and it measures how much elongating load (or tensile stress) it can handle before fracture.

To make it simple, it measures how much force we have to apply when pulling apart a material before it breaks.
 59–69 MPa
Thermal Properties
Coefficient of Thermal Expansion (CTE)
Coefficient of Thermal Expansion (CTE)
CTE (Coefficient of thermal expansion) is a material property that is indicative of the extent to which a material expands with a change in temperature. This can be a change in length, area or volume, depending on the material.

Knowing the CTE of the layers is helpful in analyzing stresses that might occur when a
system consists of an adhesive plus some other solid component.
Coefficient of Thermal Expansion (CTE), α1
Coefficient of Thermal Expansion (CTE), α1
CTE α1 (alpha 1) is the slope of the Coefficient of thermal expansion in a temperature range below the Glass transition temperature (Tg).

It explains how much a material will expand until it reaches Tg.
 80 ppm/°C

Additional Information

Anti-yellowing Performance


The following optical images of cured LE-5031HY samples (10 and 30 g) demonstrate its anti-yellowing capability under two distinct conditions: exposure to 70 °C for 18 hours and  to 85 °C at 85% RH for 24 hours.

Recommended Curing Conditions

Cure at 25 °C for 24 h or at 100 °C for 1 h.

These guidelines offer recommended curing parameters. Define the exact curing parameters to align with your product specifications.

Precautions for Use

  1. Follow the recommended mixing ratio (3:1) precisely.
  2. Make sure to stir the mixture thoroughly. Use the mixture as soon as possible.
  3. When the relative humidity >85%, the solid surface can absorb moisture from the air, producing a white fog. Room temperature curing is not advised when the relative humidity is greater than 85%. Instead, consider heated curing as a recommended alternative.
  4. After each use, seal the container tightly to prevent moisture from infiltrating and compromising the product's quality.

Storage and Handling

Store in a ventilated, dry, and clean environment. Keep away from fire and heat sources. It is strictly forbidden to store in outdoor environments. At proper storage conditions, Part A and Part B both have a shelf life of 180 days. Shelf life can be extended by using cold storage.