Description

Aptflex F13 flexible, high performance encapsulation material, exhibiting excellent hydrolytic stability and an acoustic wave speed and acoustic impedance similar to that of fresh water. It provides a compromise between toughness and flexibility and is visually clear

These properties make Aptflex F13 an ideal system for hydrophone potting, or the encapsulation of marine electronics, especially when subsequent visual inspection is required.

It is particularly useful where small, delicate components are being potted since the material exhibits low shrinkage and hence stress during the cure phase.

Key Features

Flexibility and resistance to temperature extremes of -50°C to 100°C
Low moisture sensitivity during the cure phase
Excellent hydrolytic stability
Excellent electrical insulation properties
Acoustic impedance and wave speed similar to that of freshwater
Low transmission loss and absorption

Technical Specifications

Appearance	Natural (straw colour)
Density Part A	0.91g/ml
Density Part B	1.22g/ml
Mix Ratio	4:1 (By Weight A:B)
Cured Density	0.96g/ml
Initial Mixed Viscosity	50 poise at 25°C
Usable Life	25 minutes at 25°C
Gel Time	50 minutes at 25°C
Curing times*:	24-48 hours at 25°C 7-10 days 24 hours at 50°C 16 hours at 80°C
Hardness	65-70 Shore A
Tensile Strength	5.5MPa
Elongation at Break	300%