Laminating & Infusion Systems

AMPREG 21FR

BS476 CLASS 2 LAMINATING SYSTEM
  • Up to 10 hours working time at 25°C / 77°F
  • ideal for laminating large composite structures
  • Meets BS476 part 6 & 7 class 2
  • Meets UL94 V0 rating
  • Low initial mixed viscosity for fibre/fabric wet-out
  • Low exotherm & shrinkage

Ampreg 21FR has been optimised for the manufacture of large composite structures using hand layup, and vacuum bagging techniques.

Ampreg 21FR has been designed to give excellent mechanical and thermal properties from both ambient temperature cures, and moderate temperature postcures (50°C / 120°F).

This system uses Ampreg 21 hardeners and is available with a range of hardener speeds, from Fast to Ultra Slow.

Typical Applications

Laminating of large composite structures for infrastructure, marine and rail applications.

Technical Data

​Mix Ratio
MIX RATIO
RESIN
HARDENER
Fast Standard Slow Extra Slow Ultra Slow
Mix Ratio (by weight) 100 21 21 21 21 18
Mix Ratio (by volume)
100 29 29 29 29 26
​​Component Properties
PROPERTIES RESIN
HARDENER
Fast Standard Slow Extra Slow Ultra Slow
Viscosity @ 15°C (cP) 23300 1830 164 193 180 34
Viscosity @ 20°C (cP) 11600 1222 121 111 120 22
Viscosity @ 25°C (cP) 5500 762 90 63 60 14
Viscosity @ 30°C (cP) 3800 560 66 45 40 9
Viscosity @ 40°C (cP) 2000 212 36 16 30 -
Shelf Life (months) 24 24 24 24 24 24
Colour (Gardner Index) white 5 7 8 9 blue
Component Density (g/cm3) 1.34 1.02 1.01 0.98 0.97 0.94
Mixed Density (g/cm3) - 1.27 1.27 1.26 1.26 1.26
​Working Properties
INITIAL MIXED VISCOSITY (cP)
25°C 30°C 40°C
Standard Hardener 12.1 9.1 4.3
Slow Hardener 11.5 8.3 3.7
Extra Slow Hardener 11.6 8.1 3.6
Ultra Slow Hardener 7.0 5.3 2.5
POT LIFE - 500g
(Mix in air hrs:mins)
25°C 30°C 40°C
Standard Hardener - 0:25 0:12
Slow Hardener 1:00 0:48 0:23
Extra Slow Hardener 1:45 1:27 0:54
Ultra Slow Hardener 3:00 2:30 1:20
EARLIEST TIME TO APPLY VACUUM (hrs:mins)
25°C 30°C 40°C
Standard Hardener - 0:50 -
Slow Hardener 3:11 2:30 1:00
ExtraSlow Hardener 4:22 3:00 1:30
Ultra Slow Hardener 7:40 5:00 3:30
LATEST TIME TO APPLY VACUUM (hrs:mins)
25°C 30°C 40°C
Standard Hardener - 1:30 -
Slow Hardener 4:26 3:30 1:30
Extra Slow Hardener 6:04 4:20 2:10
Ultra Slow Hardener 10:00 6:10 3:40
DEMOULD TIME
(hrs:mins)
25°C 30°C 40°C
Standard Hardener - 7.5 -
Slow Hardener 16:22 11:10 7:00
Extra Slow Hardener 31:29 16:46 7:55
Ultra Slow Hardener 74:00 24:00 10:00
​Third Party Certifications
CERTIFICATE ISSUER CERTIFICATE
Bodycote Warringtonfire 172275
Bodycote Warringtonfire 172274
Bodycote Warringtonfire 180120
Exova Warringtonfire 312302
Exova Warringtonfire 312304