PERMABOND® MT3809 Modified Two-Part Epoxy

PERMABOND® MT3809 is a 10:1, two-part, modified epoxy adhesive designed for potting applications. It has excellent adhesion to Nylon, ABS, Polycarbonate and other plastics. When cured, this adhesive is soft and reasonably flexible. Its low viscosity makes it suitable for potting intricate parts.

FEATURES AND BENEFITS

Adhesion to a wide variety of substrates
Full cure at room temperature
Easy to apply
Soft & flexible
Self levelling
Low viscosity

Physical Properties of Uncured Adhesive

	MT3809A	MT3809B
Chemical composition	Epoxy based resin	Polyamine based hardener
Appearance	Grey	Black
Mixed appearance	Charcoal black
Viscosity @ 25°C	20rpm: 6,000 – 10,000 mPa.s *(cP)* 2rpm: 15,000 – 25,000 mPa.s *(cP)*	5,000-10,000 mPa.s *(cP)*
Specific gravity	1.3	1.1

Typical Curing Properties

Mix ratio	10:1 by volume 12.5:1 by weight
Usable / pot life @25°C	10-12 mins
Handling time to 0.1 N/mm² @25°C	25-30 mins
Full cure @25°C	≥72 hours

Typical Performance of Cured Adhesive

Shear strength (ISO4587)

Mild steel: 6 – 8 N/mm² (900 – 1200 psi)

ABS: 4-6 N/mm² (600-900psi)

Acrylic: 3-5 N/mm² (400-700psi)

Nylon: 3-5 N/mm² (400-700psi)

Polycarbonate: 5-7 N/mm² (700-1000psi)

PVC: 3-5 N/mm² (400-700psi)

Hardness

(ISO868)

75-85 Shore A

20-30 Shore D

Elongation at break (ISO37)

150%

Peel strength (aluminium)

(ISO4578)

60-80 N/25mm (13-18 PIW)

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