Applications

DOWSIL™ TC-6032 – Two-part thermally conductive silicone encapsulant for PCB, EV, inverter, transformer, electronics

  • Item Name: DOWSIL™ TC-6032 Thermally Conductive Encapsulant

  • Manufacturer: The Dow Chemical Company

  • Technologies: Two-part addition-cure silicone elastomer with thermally conductive fillers

  • Color: Part A – White, Part B – Blue, As Mixed – Contact to Techniq VN for details.

  • Cure Type: Heat cure

  • Package Size: 20 L pail

  • Shelf Life: Contact to Techniq VN for details

1. Product Overview

DOWSIL™ TC-6032 is a two-part (1:1), flowable, thermally conductive silicone elastomer designed for encapsulating sensitive electronic components. It offers heat dissipation, self-leveling flow, and versatility in heat curing. The material cures to form an elastic, thermally conductive rubber suitable for deep-section and confined cures, with no by-products from the curing process. It maintains performance over a wide temperature range and exhibits resistance to minimal solvent exposure.


2. Applications

  • On-board chargers

  • Inverters / converters

  • Transformers

  • Other electronic and electrical components requiring thermal management

Application Methods: Automated or manual mixing and dispensing.

3. Typical Properties

Not Mixed (Part A / Part B)

Property Unit Part A Part B
Color White Blue
Viscosity mPa·s 8,000 4,000
Specific Gravity at 25°C 2.73 2.73

After Mixed (1:1 by weight)

Property Unit Result
Viscosity mPa·s 6,500
Heat Cure Time min 80°C: 60; 100°C: 30; 120°C: 20
Pot Life (Working Time) at 25°C hour 4
Specific Gravity, Cured at 25°C 2.75
Hardness, Shore A 34
Adhesion Strength on Al MPa 80°C: 0.38; 100°C: 0.38; 120°C: 0.44
Thermal Conductivity at 25°C W/m·K 3.2
Tensile Strength MPa 0.5
Elongation % 45
Shear Modulus by DMA at 25°C MPa 1.55
Dielectric Strength kV/mm 18
Volume Resistivity Ohm·cm 1.3 × 10¹⁴
Dielectric Constant 100 Hz: 3.22; 100 kHz: 3.66
Dissipation Factor 100 Hz: 0.0029; 100 kHz: 0.0023
Coefficient of Thermal Expansion (CTE) -40 to 150°C ppm/K 80
Volatile Siloxane Contents (D4–D10) ppm <100
UL 94 Flammability V-0

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