Repair Solutions

AMPREG 21

REPAIR SYSTEM
  • Low initial mixed viscosity
  • Good cure progression from ambient only cures
  • Non pigmented Resin and Hardeners
  • Improved Health and Safety
  • Optimised for hand lay-up
  • Excellent fibre wetting
  • Germanischer Lloyd approved
  • Mix ratio of 100:33.3 (by weight)

Ampreg 21 is the latest generation of laminating systems offered by Gurit. The low initial mixed viscosity makes this product ideal for wetting out heavyweight fibres/fabrics. It has been designed to give excellent mechanical and thermal properties from both ambient temperature cures and moderate temperature post-cures (50°C / 120°F).

Ampreg 21 is available with a range of hardener speeds from Fast to Extra Slow and has been formulated to give significant improvements to Health and Safety. Ampreg 21 is Germanischer Lloyds approved for certified applications.

Typical Applications

General purpose applications as well as medium to large structures such as boat hulls, buildings and wind turbine blades. Can also be used for repair.

Pack Sizes & Availability

Ampreg 21 is available in 3.6kg packs or 10/3.33, 20/6.66, 216/18 and 1000/165kg resin/hardener quantities for machine mixing/dispense.

Technical Data

​Mix Ratio
MIX RATIO
RESIN
HARDENER
Fast Standard Slow Extra Slow High Tg
Mix Ratio (by weight) 100 33 33 33 33 29
Mix Ratio (by volume)
100 38 38 38 38 34
​​Component Properties
PROPERTIES RESIN
HARDENER
Fast Standard Slow Extra Slow High Tg
Viscosity @ 15°C (cP) 4800 1830 164 193 180 110
Viscosity @ 20°C (cP) 2970 1222 121 111 120 80
Viscosity @ 25°C (cP) 1562 762 90 63 60 60
Viscosity @ 30°C (cP) 901 560 66 45 40 40
Viscosity @ 40°C (cP) 353 212 36 16 30 -
Shelf Life (months) 24 24 24 24 24 24
Colour (Gardner Index) 2 5 7 8 9 -
Component Density (g/cm3) 1.135 1.018 1.007 0.985 0.974 0.96
Mixed Density (g/cm3) - 1.104 1.100 1.09 1.091 1.09
​Working Properties
INITIAL MIXED VISCOSITY (cP)
20°C 25°C 30°C
Fast Hardener 2004 1194 731
Standard Hardener 904 537 344
Slow Hardener 705 481 309
Extra Slow Hardener 716 432 289
High Tg Hardener 820 - -
POT LIFE - 500g
(Mix in air hrs:mins)
20°C 25°C 30°C
Fast Hardener 0:36 0:24 0:12
Standard Hardener 0:47 0:33 0:19
Slow Hardener 1:36 1:10 0:44
Extra Slow Hardener 3:48 2:34 1:19
High Tg Hardener - - -
EARLIEST TIME TO APPLY VACUUM (hrs:mins)
20°C 25°C 30°C
Fast Hardener 1:46 1:15 0:42
Standard Hardener 2:38 2:10 1:48
Slow Hardener 4:28 3:44 2:56
Extra Slow Hardener 6:44 5:32 4:32
High Tg Hardener 7:10 - -
LATEST TIME TO APPLY VACUUM (hrs:mins)
20°C 25°C 30°C
Fast Hardener 2:32 1:39 1:00
Standard Hardener 3:29 2:45 2:13
Slow Hardener 6:15 4:46 3:44
Extra Slow Hardener 8:34 7:02 5:40
High Tg Hardener 9:10 - -
DEMOULD TIME
(hrs:mins)
20°C 25°C 30°C
Fast Hardener 5:03 2:23 1:32
Standard Hardener 8:44 4:38 3:00
Slow Hardener 29:20 15:52 9:16
Extra Slow Hardener 54:00 35:42 21:47
High Tg Hardener 60:00 - -
​Third Party Certifications
CERTIFICATE ISSUER CERTIFICATE
Germanischer Lloyd WP 1220002 HH