Products

H.B. Fuller 1536 Electrical Potting

  • Technology: Silicone
  • Brand Name: 1536 Electrical Potting Sealant
  • Manufacturer: H.B. Fuller (Tonsan Adhesive, Inc.)
  • Package size: Contact Avantek for details.
  • Shelf life: 9 months

1536 Electrical Potting Sealant

1. Product Overview

1536 is a transparent, flowable, one-component, neutral alkoxy-cure silicone sealant. It cures at room temperature when exposed to atmospheric moisture. The sealant is low-odor, solvent-free, and offers excellent insulation and adhesion to glass, ABS, and PCB. It also provides superior resistance to thermal cycling, damp-heat, and damp-freezing conditions.

2. Applications

  • Electrical potting and sealing
  • Insulation for PCB and electronics
  • Adhesion to glass, ABS, and PCB
  • Protection against thermal cycling and harsh environmental conditions

3. Typical Properties

Before Cure
Property Value Test Method / Condition
Viscosity 8,000 – 11,000 cP Brookfield LVDV-Ⅰ 64#/30RPM
Density 1.04 ± 0.05 g/cm³
Tack Free Time 5 – 20 min (23 ± 2)°C, (50 ± 5)% RH
Cure Depth (24h) 2 mm (23 ± 2)°C, (50 ± 5)% RH
After Cure
Property Value Test Method
Hardness 30 ± 5 Shore A ISO 7619
Tensile Strength 2.0 MPa ISO 37
Elongation at Break 220% ISO 37
Volume Resistivity 1.0 × 10¹⁴ Ω·cm IEC 60093
Breakdown Voltage 15 kV/mm IEC 60243-1

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