STYCAST US 0138

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

HYSOL US0138

Main features

  • Extended 40-to-60-Minute Working Time
  • Ambient or Accelerated Cure
  • Electrically Insulating Electronic Potting

Product Description

LOCTITE STYCAST US 0138 is a two-component polyurethane potting and encapsulation system for environmental protection of electronics and devices. Part A and Part B mix at 1:4 by volume or 21:100 by weight, producing a typical mixed viscosity of 3,000 cP at 25 deg C. Working time is 40 to 60 minutes for a 140 g mass at 25 deg C, followed by a recommended 24-to-48-hour cure at 25 deg C or a 2-to-4-minute heat cure at 60 to 85 deg C. The cured material combines Shore A60 hardness with 0.569 W/(m K) thermal conductivity and 1,119 V/mil dielectric strength.

Key features

  • Defined dual-basis mixing: The system mixes at 1:4 by volume or 21:100 by weight.
  • Extended working time: Working time is 40 to 60 minutes for a 140 g mass at 25 deg C.
  • Ambient or accelerated cure: Use 24 to 48 hours at 25 deg C or 2 to 4 minutes at 60 to 85 deg C.

Applications

Potting and encapsulation of electronics and devices for environmental protection.

Product Family

STYCAST US 0138

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TDS, SDS & Technical Documents

Technical Specifications

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
3,000 mPa.s
General Properties
Density
Volumetric mass per unit
1460 kg/m3

Additional Information

Technical properties

As-supplied / before-processing properties

Values are typical reference data, not specifications. Cure conditions are guideline recommendations.

PropertyValueUnitMethod / condition
Mix ratio1:4Part A:Part B; by volume
Mix ratio21:100Part A:Part B; by weight
Viscosity3,000cPMixed material; 25 deg C; typical
Density1.46g/cm^3Mixed material; 25 deg C; typical
Working time40 to 60min140 g mass; 25 deg C; typical
Gel time90 to 120min100 g mass; 25 deg C; typical
Recommended cure24 to 48h25 deg C; guideline
Alternative cure2 to 4min60 to 85 deg C; guideline
Technical properties

After-processing / final-state properties

Values describe the cured material and are typical product-selection data, not specifications.

PropertyValueUnitMethod / condition
Hardness60Shore ACured material; typical
Glass transition temperature-60deg CCured material; typical
Thermal conductivity0.569W/(m K)Cured material; typical
Moisture absorptionLess than 0.2%24 h immersion; cured material; typical
Dielectric strength1,119V/mil0.02 in thickness; cured material; typical
Volume resistivity2.08 x 10^13ohm-cm25 deg C; cured material; typical

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