Aptflex F7

A two-part, highly flexible, high performance encapsulation material, exhibiting excellent hydrolytic stability and an acoustic wave speed similar to that of fresh water.

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Description

Aptflex F7 is a highly flexible, high performance encapsulation material, exhibiting excellent hydrolytic stability and an acoustic wave speed and acoustic impedance similar to that of fresh water. It also has the lowest insertion loss and absorption of all encapsulants from Precision Acoustic Ltd

These properties make Aptflex F7 an ideal system for hydrophone windows, marine encapsulation applications or as strain reliefs around cable glands and cable repairs.

It is particularly useful where small, delicate components are being potted since the material exhibits low shrinkage and hence stress during the cure phase.  The high flexibility means that F7 is not as tough and durable as other encapsulants

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 wave speed similar to that of freshwater
  • Very low transmission loss

Technical Specifications

Appearance Natural (straw colour)

or Black

Density Part A 0.91g/ml
Density Part B 1.22g/ml
Mix Ratio 6:1 (By Weight A:B)
Cured Density 0.965g/ml
Initial Mixed Viscosity 70 poise at 25°C
Usable Life 25 minutes at 25°C
Gel Time 60 minutes at 25°C
Curing times*: 48 hours at 30°C
16 hours at 50°C
10 hours at 80°C
Hardness 50-55 Shore A
Tensile Strength 3.0 MPa
Elongation at Break 300%

*Curing Times are temperature dependant.  Precision Acoustics reserves the right to change the specification without notice

The shelf-life of unopened containers is at least 12 months.

Contact Us

If you would like more information about this product please get in touch by phone, email or enquiry form.

Telephone:
+44 (0) 1305 264669

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