81205Q_TDS.pdf

105 Epoxy Resin’ I 205 Fast Hardener’
General Description
1,051205 Epoxy is used for general coating ar-rd bonding applications at lower
remperatures and to produce a rapid cure that develops its physical properties quickly at
room temperature.
1051205 forms a high-strength, moisture-resistant solid with excel lent bonding and
barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing
fabrics, foam and other composite materials’ and a variety of metals’
10SlZ05 Epoxy can be thickened with’WEST SYSTEM fillers to bridge gaps and fill voids
and can bosanded and shaped when cured.
‘With
roller applications, it has excellent thin-
film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple
coarsof 1.051205 Epoxycreateasuperiormoisturebarrierandatough,stablebasefor
paints and varnishes. It is formulated without volatile solvents resulting in a very low
VOC content. It has a relatively high flash point, no strong solvent odor and does not
shrink after curing. It is not intended for clear coating natural finished wood.
Handling Characteristics
Mix ratio by volume (300 Mini Pump ratio) …’..”…….’5 parts resin1 part hardener
by weight …..5.19:1
Acceptable ratio range by weight
Mix viscosity (ar.72″F) ASTM D-2393 975 cps
Pot life (1009 at72″F)
‘Working
time, thin filmli
Tensile elongation ASTM D-638
Tensile modulus ASTM D-638 ..
Flexural strength ASTM D-790
Flexural modulus ASTM D-790
… 9 to 12 minutes
. 50 to 70 minutes
Cure to a solid, thin filmo ….. 6 to 8 hours
Cure to working strength 1 to 4 daYs
Minimum recommended temperature ……’.’…… ‘ 40’F (4’C)
“Epory cures faster
at higher temperatures and in thicker applications.
Physical Properties of Cured Epoxy
Specific gravity
Hardness (Shore D)ASTM D-2240 83
Compression yield ASTM D-695 11,400 psi
Tensile strength ASTM D638
3.4o/o
……… 14,100 psi
Heat deflection temperature ASTM D-648 1 18″F
129’F
Onset of Tg by DSC ………
Ultimate Tg ………….’J.42″F
Storage/Shell Life
Store at room temperature. Keep containers closed to prevent contamination.
‘lrith
proper storage, resin and hardeners should remain usable for many years. After a long
storage, verify the metering ac cu racy of the pumps. Mix a small test batch to assure
proper curing.
Over time, 105 Resin will thicken slightly and will therefore require extra care when
mixing. Repeated freezelthaw cycles during storage may cause crystallization of 105
Resin.
‘Warm
resin to 125’F and stir to dissolve crystals. Hardener may darken with age,
but physical properties are not affected by color. Be aware of a possible color shift if very
old and new hardener are used on the same project.
1.18
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