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URACAST™ UC-2356

Chemical Family
Urethanes

UC-2356 is a two-part urethane resin system, which combines good handling characteristics with excellent cured properties. Its low viscosity allows for easy flow and air release and excellent hydrolytic stability. The cured elastomer has excellent water resistance and is exceptionally resistant to thermal shock.

Product families

Applications

Electrical & Electronics — Packaging & Assembly
  • Potting Compounds
Electrical & Electronics — Parts & Components
  • Printed Circuit Boards (PCBs)
Electrical & Electronics — Wire & Cable
  • Power Transmission & Distribution

Product Families

Ready-to-Use Products — Adhesives & Sealants
  • Encapsulants

Other characteristics

Brand
URACAST
Product Type

2K (2 component) Adhesive, Encapsulant, Potting Compound; 2K (2 component) Adhesive; Encapsulant; Potting Compound

Application Area

Amplifiers, Coils, Printed Circuit Boards, Rectifiers, Relays, TV Sets; Amplifiers; Coils; Printed Circuit Boards; Rectifiers; Relays; TV Sets

Markets
Electrical & Electronics
Warning

Although the system contains low volatility materials, care should be taken in handling. Adequate ventilation of work place and ovens is essential. These materials may cause injury to the skin following prolonged or repeated contact and dermatitis in susceptible individuals. In case of skin contact, wash thoroughly with soap and water. For eyes, flush immediately with plenty of water for at least 10 minutes and seek medical attention.

Shelf LIfe
6 Months
Technology
Ready-to-Use Products
Industrial Usage

These materials are intended for industrial use only, and the practices of good housekeeping, safety and cleanliness should be followed before, during and after use.

Use instructions

1. To each 100 grams of Part B, add 45 grams of Part A and mix it well preferably using a mechanical mixer. 2. Vacuum degas for about five minutes to remove any dissolved or entrapped air. 3. Proceed with the casting or potting application and cure as recommended.

Applications

It is useful for general purpose casting, potting or encapsulating intricate circuits, operational amplifiers, transformers, and other electric/electronic components.

Certifications and Compliance
ISO 9001
Ready to Use Product Features
  • Ease of Handling
  • Good Flow
  • High Hydrolytic Stability
  • Low Viscosity

Technical data

Table 1 of 2

7 rows
CharacteristicValueUnit
PolyolPart B—
IsocyanatePART A—
Mix Ratio by Weight (A:B)45:100—
Mixed Viscocity (at 25°C)400 - 800cPs
Pot Life (at 25°C, 100g)30 - 60minutes
Recommended Cure (at 80°C)2hours
Alternate Cure (at 25°C)24 - 48hours

Table 2 of 2

12 rows
CharacteristicValueUnit
Specific Gravity1.2—
Hardness70Shore A
Water Absorption (24 hr at Room Temperature)0.15%
Weight Loss (at 120°C, 7 days)0.2%
Thermal Conductivity0.3W/m °K
Service Temperature Range-55 to 120°C
Glass Transition Temperature (Tg)max. 10°C
Coefficient of Thermal Expansion120ppm/°C
Dielectric Strength (0.125 inch)420Volts/mil
Dielectric Constant (at 1 kHz)4.2—
Dissipation Factor (at 1 kHz)0.02—
Volume Resistivity2x10^14Ω-cm

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