Cold Mounting

REF: D123 Categories: ,

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Description

Cold mounting or embedding is when a resin is mixed with a hardener (or accelerator) to provide the mounting compound, and then the polymerization process take place to form the block. In some cases, this process gives-off heat. However this heat generation can be controlled by the use of ice or cool air blow setting. Cold mounting compounds are preferred for specimens that are sensitive to the heat or pressure, which applies during the hot mounting process. There are three types of cold mounting:
1. Epoxy Systems – Epoxies have the lowest shrinkage of all cold mounting resins. The curing time is relatively long, but the adhesion to most materials is excellent. They are also used for vacuum impregnation. The hardened epoxy is duroplastic and not affected by moderate heat or chemicals.
2. Acrylic System – Acrylics are easy to use resins with short curing times and negligible shrinkage. They consist of self-polymerizing components that harden with the addition of catalyst. Hardened acrylic is thermoplastic and resistant to most chemicals.
3. Polyester Systems – Polyester belongs to the catalyzed system, like acrylics. Curing times are relatively short and the hardened specimen is duroplastic.

Choosing a Cold Mount*

Cat# Resin Color Curing Time Hardness Shrinkage
1-3
(Best=1)
Application
1232 EpoFix Clear, Transparent
Refractive index: ND = 1.578
Approx 12 hours 78 Shore D . Vacuum impregnation
Porous samples
Mineralogical samples
1233
EMSFix
Clear, Transparent
Refractive index: ND = 1.561
1½ hr in oven at 75°C/167°F 85 Shore D . Vacuum impregnation
Porous samples
Mineralogical samples
1234 UniMount Clear, Transparent
Refractive index: ND = 1.573
8 hours 84 Shore D . Vacuum impregnation
Porous samples
Mineralogical samples
1235 TransFix Colorless, clear (extremely clear when cured under pressure). Otherwise semi-transparent. 20 min. 83 Shore D Vias
Microvias
1245 Epoxy-Dye Fluorescent dye for use in microscopy to make cracks and pores visible. For use with EpoFix and Unimount
1256
AcryMount
Dull yellowish, partly transparent 10 min 82 Shore D …. Routine examination
1257 GeoFix Colorless, clear (extremely clear when cured under pressure). 20 min 85 Shore D Extraordinarily
clear mounts
1258 MatFix Light yellow 30 min 85 Shore D . Fast curing
No shrinkage
1259 LiteFix Off-white 20 min 84 Shore D .. Edge Retention
Planeness
1265 Acrylic-Dye Blue, Red & Yellow Dyes for easy identification of your acrylic mounts
1270 Poly-Mount Transparent
Polyester
Low viscosity
45 min …. Serial mounting of specimens not sensitive to heat
1276 Poly-AcryMount White
Polyester/Acrylic
18-25 min . Edge Retention
Planeness

*30 mm dia. mount with a 45% carbon steel specimen (20 vol%)

Cat # Mixing Ratio
Weight
Ratio
Volume
Mixing
Time
Potlife Color Can be colored with EpoDye Can be colored with AcryDye Peak Temp
1232 Resin:
25 parts
Hardener: 3 parts
Resin:
15 parts
Hardener: 2 parts
2 min 30 min Clear, Transparent
Refractive index: ND = 1.578
X 40°C

104°F

1233 Resin:
25 parts
Hardener: 7 parts
Resin:
31 parts
Hardener: 10 parts
5 min >60
min
Clear, Transparent
Refractive index: ND = 1.561
X 170°C

338°F

1234 Resin:
7 parts
Curing Agent:
1 part
Resin:
26 parts
Curing Agent:
5 parts
3 min 60 min Clear, Transparent
Refractive index: ND = 1.573
X 60°C

140°F

1235 Liquid:
11 parts
Powder:
9 parts
Liquid:
1 part
Powder:
2 parts
30 sec 2 min Colorless, clear (extremely clear when cured under pressure). Otherwise semi-transparent X X 115°C

239°F

1245 Fluorescent dye for use in microscopy to make cracks and pores visible
1256 Liquid:
10 parts
Powder:
15 parts
Liquid:
1 part
Powder:
2 parts
30 sec 3 min Dull yellowish, partly transparent X 100°C

212°F

1257 Liquid:
6 parts
Powder:
10 parts
Liquid:
2 parts
Powder:
5 parts

min

min
Colorless, clear (extremely clear when cured under pressure) X X 90°C

194°F

1258 Liquid I:
8 parts
Liquid II:
4 parts
Powder:
14 parts
Liquid I:
10 parts
Liquid II:
5 parts
Powder:
15 parts

min
4
min
Light yellow X 138°C

280°F

1259 Liquid:
10 parts
Powder:
20 parts
Liquid:
1 part
Powder:
2 parts
45 sec
min
Off-white X 75°C

167°F

1265 Blue, Red & Yellow
1270 Transparent
Polyester
Low viscosity
1276 White
Polyester/Acrylic
114°C

 

Cat # Technical Data Sheet MSDS
1232 TDS_Epofix Cold-Setting Embedding Resin MSDS_1232-A
MSDS_1232-B
1233 TDS_EMSFix Kit MSDS_1233-A
MSDS_1233-B
1234 TDS_Unimount Epoxy Kit MSDS_1234-A
MSDS_1234-B
1245 MSDS_1245
1256 TDS_AcryMount Embedding Resin Instructions MSDS_1256-H
MSDS_1256-R
1257 TDS_Geo-Fix Cold Mounting Embedding Kit MSDS_1257-H
MSDS_1257-R
1258 MSDS_1258-H1
MSDS_1258-H2
MSDS_1258-R
1265 TDS_Acrylic Dye Set MSDS_1265
1270 TDS_Poly Mount MSDS_1270-A
MSDS_1270-B
1276 TDS_Poly-Acrymount Specimen Mounting Kit MSDS_1276-A1
MSDS_1276-A2
MSDS_1276-B

Additional information

Unit

kit, Set of 3

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