Industries

BERGQUIST GAP FILLER TGF 3500LVO

  • Item Name: BERGQUIST GAP FILLER TGF 3500LVO
  • Manufacturer: Henkel
  • Product Category: Thermal Interface Material (TIM)
  • Technologies: Silicone-based, two-part liquid gap filler
  • Applications: Lighting, automotive in-cabin electronics, medical electronics, industrial controls, optics
  • Color: Light blue (cured), Part A (blue), Part B (white)
  • Cure Type: Room temperature cure or heat cure
  • Package Size: Cartridges, kits (Contact Techniq VN for details)
  • Shelf Life: 6 months

1. Product Overview

  • Description: A thermally conductive, liquid gap filler material designed for thermal management applications.
  • Technology: Silicone-based.
  • Appearance: Light blue (cured), Blue (Part A), White (Part B).
  • Cure Type: Room temperature or heat cure.
  • Mix Ratio (by weight & volume): 1:1 (Part A: Part B).
  • Solids Content: 100%.
  • Operating Temperature Range: -60 to 200°C.
  • Features & Benefits:
    • Thermal conductivity of 3.5 W/m-K.
    • Low volatility for outgassing-sensitive applications.
    • Ultra-conforming with excellent wet-out for low-stress interface applications.
    • No cure by-products.
    • Forms a soft, form-in-place elastomer after curing.

2. Applications

  • Industries:

    • Lighting
    • Automotive in-cabin electronics
    • Medical electronics
    • Industrial controls
    • Optics
  • Application Methods:

    • Mixed and dispensed using dual-tube cartridge packs with static mixers and a manual or pneumatic gun.
    • Compatible with high-volume mixing and dispensing equipment.

3. Typical Properties

Uncured Properties

Property Value Test Method
Viscosity (1,500/sec, Part A & B) 45,000 mPa·s (cP) ASTM D5099
Density 3.1 g/cc ASTM D792
Working Time @ 25°C 240 minutes
Shelf Life @ 25°C 180 days

Cure Schedule

Condition Cure Time
Room Temperature (25°C) 24 hours
Heat Cure (100°C) 30 minutes

Cured Properties

Property Value Test Method
Hardness (Shore 00, 30-sec delay) 40 ASTM D2240
Heat Capacity 0.8 J/g-K ASTM E1269
Flammability UL 94 V-0
Siloxane Content (ΣD4-D10) 40 ppm

Electrical Properties

Property Value Test Method
Dielectric Strength 275 V/mil ASTM D149
Dielectric Constant (1,000 Hz) 8.0 ASTM D150
Volume Resistivity 1×10¹⁰ ohm-meter ASTM D257

Thermal Properties

Property Value Test Method
Thermal Conductivity 3.5 W/m-K ASTM D5470

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