Adhesive Systems

SPABOND 345

EPOXY ADHESIVE SYSTEM
  • Excellent gap filling properties
  • High strength and toughness
  • Three hardener speeds
  • Range of working times / clamp times
  • Low exotherm and shrinkage
  • Temperature performance up to 84°C / 183°F

Applications

  • Ideal for bonding large structures where surfaces have uneven geometry

Mix Ratio

  • 2:1 (By volume)

Introduction

Spabond 345 is a toughened, high performance adhesive system ideal for bonding large structures where substrate surfaces have uneven geometry. The product has a thick, paste-like consistency, and can be applied without sag in thicknesses of over 30mm at 15°C, making it ideal where large, uneven vertical gluelines are required.

The product has a 2:1 mix ratio by volume. To aid mixing, the components are pigmented to give visual indication of mix quantity. The Fast hardener is coloured purple, but there is also a black version. This is useful for improving the cosmetic appearance of bondlines involving exposed carbon composites.

Spabond 345 is available in 400ml cartridges, pails and drums.

Technical Data

​Component Properties
PROPERTIES RESIN
HARDENER
Fast Slow Extra Slow
Mix Ratio (by weight) 100 48 48 48
Mix Ratio (by volume) 100 50 50 50
Viscosity @ 15°C (cP) 125,000 45,000 125,000 12,000
Viscosity @ 20°C (cP) 105,000 30,000 85,000 7,000
Viscosity @ 25°C (cP) 95,000 20,000 50,000 5,000
Viscosity @ 30°C (cP) 70,000 15,000 30,000 4,000
Shelf Life (months) 12 12 12 12
Colour yellow purple/black red blue
Mixed Colour - brown pink green
Component Density (g/cm3) 1.17 1.08 1.097 1.012
Mixed Density (g/cm3) - 1.14 1.146 1.116
​Working Properties
INITIAL MIXED VISCOSITY (cP)
15°C 20°C 25°C 30°C
Fast Hardener 52,000 42,000 34,000 27,000
Slow Hardener 106,000 87,000 75,000 64,000
Extra Slow Hardener 74,000 44,000 36,000 24,000

 

GEL TIME - 150g MIX IN WATER (hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 0:39 0:28 0:20 0:15
Slow Hardener 5:15 3:50 2:48 2:00
Extra Slow Hardener 8:27 6:00 4:10 2:55

 

POT LIFE - 500g MIX IN AIR
(hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 0:20 0:17 0:13 0:10
Slow Hardener 1:19 1:12 1:06 1:01
Extra Slow Hardener 3:06 2:41 2:16 1:57

 

CLAMP TIME (hrs:mins)
15°C 20°C 25°C 30°C
Fast Hardener 7:50 5:30 3:55 2:45
Slow Hardener 16:32 12:10 8:52 6:24
Extra Slow Hardener 26:04 19:25 14:19 10:42

 

SAG RESISTANCE (mm)
15°C 20°C 25°C 30°C
Fast Hardener 17 16 15 14
Slow Hardener 30 28 26 24
Extra Slow Hardener 30 28 26 24
​Cured System Properties

  Room Temp. Cure
(28 days @ 21°C)
Cured 24 hours @ 21°C
+ 16 hours @ 50°C
Cured 5 hrs @ 70°C
Hardener Fast Slow Ex.Slow Fast Slow Ex.Slow Fast Slow Ex.Slow
Tg DMTA (°C) 57 56 56 68 74 71 76 84 79
Tg Ult - DMTA (°C) 92 107 104 92 107 104 92 107 104
Tg2 - DSC (°C) 55 59 59 68 69 81 78 81 77
Cured Density (g/cm3) - - - - - - 1.18 1.17 1.13
Linear Shrinkage (%) - - - - - - 1.15 1.22 1.06
Cleavage Strength (N) 12 12 11 12 16 13 13 15 13
Shear Strength on Steel (MPa) 37 38 29 37 39 37 42 40 36
Shear Strength Wet Retention (%) 95 93 115 94 94 88 82 - -

​Third Party Certifications
CERTIFICATE ISSUER CERTIFICATE
Germanischer Lloyd WP 1440010 HH
Lloyds Register MATS/4606/1