Laminating & Infusion Systems

PRIME™ 27

PREMIUM EPOXY INFUSION SYSTEM
  • The lowest viscosity PRIME™ infusion resin
  • Suitable for infusing structures that utilise carbon, aramid and glass fibres
  • Very low exotherm in thick sections
  • Germanischer Lloyd approved

PRIME™ 27 is suitable for the female moulding of large, complex components incorporating advanced fibres such as carbon and aramid*. Typical projects include spars, hulls and reinforcing structures.

PRIME™ 27 offers outstanding performance in a variety of liquid infusion processes including SCRIMP™, RIFT(resin infusion under flexible tooling), VARTM (vacuum assisted resin transfer moulding) and RTM (resin transfermoulding).

It is Gurit’s premium infusion system, offering high mechanical and thermal properties, lower viscosity, improvedwetting out and longer working time than PRIME™ 20LV. It achieves excellent mechanical and physical properties,including a high Tg from a moderate (50°C) postcure.

PRIME™ 27 resin uses PRIME™ 20 hardeners to give a range of working times and cure speeds. This enables thegel time of the resin to be closely matched to the required infusion time for any particular size of moulded part.

The system has an exceptionally low exotherm characteristic, which allows thick sections to be manufactured without risk of premature gelation due to exothermic heat build-up. This low exotherm will also extend the life ofmould tools.

All the above properties make PRIME™ 27 a useful product for the infusion of large complex mouldings utilising "higher end" reinforcement fibres such as carbon.

For further advice and comprehensive processing notes please contact Marine Technical Support.

*Unidirectional carbon fibre is acknowledged as difficult to infuse. Please contact a member of our technical team before attempting a carbon infusion with PRIME™ 27

Technical Data

​Component Properties
PROPERTIES RESIN
PRIME™ 20 HARDENER
Fast Slow Extra Slow High Tg
Mix Ratio (by weight) 100 28 28 28 25
Mix Ratio (by volume) 100 34 34 34 30.8
Viscosity @ 20°C (cP) 815-865 25-27 22-24 16-18 29-31
Viscosity @ 25°C (cP) 480-510 20-22 15-17 13-15 25-27
Viscosity @ 30°C (cP) 310-330 16-18 12-14 10-12 21-23
Shelf Life (months) 12 12 12 12 12
Colour (Gardner) 1 7 clear 1 1
Mixed Colour (Gardner) - 3 1 1 1
Component Density (g/cm3) 1.132 0.983 0.95 0.94 0.92
Mixed Density (g/cm3) - 1.1086 1.0839 1.08 1.08
​​Working Properties
INITIAL MIXED VISCOSITY (cP)
15°C 20°C 25°C 30°C
Fast Hardener 405-425 260-280 190-210 145-155
Slow Hardener 425-445 265-285 190-200 130-150
Extra Slow Hardener 370-390 250-270 170-180 115-125
High Tg Hardener 590 510 320 220

 

GEL TIME - TECAM 50g
IN WATER (hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 2:00 00:50 00:25 00:13
Slow Hardener 7:40 4:45 2:40 2:15
Extra Slow Hardener 14:50 10:40 7:20 5:30
High Tg Hardener - 5:00 - -

 

POT LIFE - 500g MIX IN AIR
(hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 00:28 00:20 00:14 00:07
Slow Hardener 1:12 1:00 00:46 00:35
Extra Slow Hardener 4:45 4:00 3:50 3:40

 

LATEST FLOW UNDER VACUUM (THEORETICAL, THIN FILM hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 3:05 2:40 2:15 1:40
Slow Hardener 6:50 4:50 4:15 4:00
Extra Slow Hardener 11:40 9:40 7:40 5:45

 

EARLIEST VACUUM OFF TIME
(THEORETICAL, THIN FILM hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 4:40 4:00 3:20 2:40
Slow Hardener 13:00 11:00 7:15 6:00
Extra Slow Hardener 37:00 28:40 19:50 11:10

 

DEMOULD TIME (hrs:mins) 15°C 20°C 25°C 30°C
Fast Hardener 6:10 5:05 3:45 2:50
Slow Hardener 20:15 17:00 13:15 10:25
Extra Slow Hardener - - - -
​Cured System Properties
CURED SYSTEM THERMAL PROPERTIES
Hardener Used Fast Slow Ex.Slow High Tg
Cure Schedule 16 hours @ 50°C
Tg 1 (DMTA) 69.4 68.7 70.0 75.0
Estimated HDT 60-62 60-62 61-63 66-68

 

CURED SYSTEM MECHANICAL PROPERTIES
Hardener Used Fast Slow Ex.Slow High Tg
Cure Schedule 16 hours @ 50°C
Tensile Strength (MPa) 69.6 73.3 72.0 78.1
Tensile Modulus (GPa) 3.46 3.47 3.60 3.43
Strain to failure (%) 5.0 4.5 5.35 3.27
Moisture Absorption (%) TBA TBA 0.97 0.36
Cured Density (g/cm3) 1.133 1.139 1.140
1.140
Linear Shrinkage (%) 1.05 1.6 1.7 1.8
Barcol Hardness 18 28 38 34

 

CURED LAMINATE PROPERTIES
Hardener Used Fast Slow Ex.Slow High Tg
Cure Schedule 16 hours @ 50°C
Compressive Strength (MPa) 441.28 427.18 479.3 486.4
ILSS (MPa) 51.01 53.99 53.2 58.3
ILSS Wet Retention (%) TBA TBA 80 91.4
​Third Party Certifications
CERTIFICATE ISSUER CERTIFICATE
Germanischer Lloyd WP 1320040 HH