SikaBiresin CR94
February 19, Version 02 /2019
1
TECHNICAL DATA SHEET
SikaBiresin CR94 with CH94- 1 (Fast), CH94- 3 (Medium), CH94-6 (Slow) hardeners
(FORMERLY L 140)
EPOXY LAMINATING SYSTEM
VARIABLE HARDENERS, LAMINATING, SUPERIOR PROPERTIES
DESCRIPTION
The new and improved SikaBiresin CR94 systems (formerly L 140) are convenient, easy-to-
use, 100% solids laminating systems developed for building, repairing or restoring any type
of marine vessels and for many other applications and markets. The versatility of the L 140
epoxy systems makes them ideal for use in standard wet lay-up and vacuum bagging
processing with a wide range of reinforcements. These systems can also be mixed with a
variety of fillers for fairing, filleting or bonding applications. SikaBiresin CR94 epoxy systems
consist of one base resin and a selection of three separate hardeners to suit your application
needs. These systems are all mixed at convenient 3:1 volumetric mix ratio and can be
metered through our calibrated push pumps or various types of dispensing equipment when
scales are not used. In addition to the high strength and durability of the SikaBiresin CR94
epoxy systems, the low viscosity allows for better wet-out resulting in lighter, stronger, void-
free parts without experiencing run out on vertical surfaces. The unique chemistry of the
SikaBiresin CR94 systems provide maximum physical properties, reduces curing exotherm
and minimizes blush, making these systems more trouble free than ever. Applications
include marine boats, parts, tools and also tools or parts for the industrial, transportation,
and aerospace industries.
PROPERTIES
Low viscosity for excellent wet-out
R.T. cured and post-cured options
Variable pot life/working time options
Above and below waterline use
Good high modulus/ good elongation
Good 24 hour surface sandability
Suitable for glass, carbon, aramid fabric
Hardener blending an option
Excellent bond to all fabrics
Superior overall properties
TECHNICAL DATA SHEET
SikaBiresin CR94
February 19, Version 02 /2019
2
PHYSICAL PROPERTIES CR94/CH94-1 (Fast)
Composition RESIN
SikaBiresin CR94
HARDENER
SikaBiresin CH94 1
MIXED
Mix ratio by weight
Mix ratio by volume at 25 C
100
100
27
33
100/27
100/33
(3/1)
Aspect Liquid Liquid Liquid
Color Hazy Clear Clear Clear
Viscosity at 25 C (Cps) 6,000 8,000 16 – 24 ~ 1,200
Specific gravity at 25 C lbs./gal
(g/cc) ASTM D792 9.6
(1.15)
7.7
(.92)
9.1
(1.09) Gel time at 77 F
(150 grams) (25 C)
(minutes) 20 – 30
MECHANICAL PROPERTIES at 23 C (Neat cured properties)
Hardness (Shore D)
*Cure #1
**Cure #2
ASTM D-2240
84 – 88
84 – 88
Flexural Strength (psi)
*Cure #1
**Cure #2
ASTM D-790
10,000
14,500
Flexural Modulus (psi)
*Cure #1
**Cure #2
ASTM D-790
564,000
468,000
Tensile Strength (psi)
*Cure #1
**Cure #2
ASTM D-638
6,000
11,600
Tensile Modulus (psi)
*Cure #1
**Cure #2
ASTM D-638
310,000
234,000
Tensile Elongation (psi)
*Cure #1
**Cure #2
ASTM D-638
2.3
7.3
Glass transition temperature F ( C) TMA
*Cure #1
**Cure #2
ASTM E1545
136 (58)
203 (95)
Moisture absorption (%)
*Cure #1
0.1
* Cure #1 – 7 day/R.T.
** Cure #2 24 hr/R.T. + 8hr/180 F (82 C)
TECHNICAL DATA SHEET
SikaBiresin CR94
February 19, Version 02 /2019
3
PHYSICAL PROPERTIES CR94/CH94-3 (Medium)
Composition RESIN
SikaBiresin CR94
HARDENER
SikaBiresin CH94 3
MIXED
Mix ratio by weight
Mix ratio by volume at 25 C
100
100
27
33
100/27
100/33
(3/1)
Aspect Liquid Liquid Liquid
Color Hazy Clear Clear Clear
Viscosity at 25 C (Cps) 6,000 8,000 12 – 20 ~ 1,000
Specific gravity at 25 C lbs./gal
(g/cc)
ASTM D792 9.6
(1.15)
7.7
(.92)
9.1
(1.09
Gel time at 77 F
(150 grams) (25 C)
(minutes) 60 – 90
MECHANICAL PROPERTIES at 23 C (Neat cured properties)
Hardness (Shore D)
*Cure #1
**Cure #2
ASTM D-2240
84 – 88
84 – 88
Flexural Strength (psi)
*Cure #1
**Cure #2
ASTM D-790
11,900
18,500
Flexural Modulus (psi)
*Cure #1
**Cure #2
ASTM D-790
534,000
472,000
Tensile Strength (psi)
*Cure #1
**Cure #2
ASTM D-638
7,000
11,400
Tensile Modulus (psi)
*Cure #1
**Cure #2
ASTM D-638
279,000
220,000
Tensile Elongation (psi)
*Cure #1
**Cure #2
ASTM D-638
3.0
8.1
Glass transition temperature F ( C) TMA
*Cure #1
**Cure #2
ASTM E1545
136 (58)
203 (95)
Moisture Absorption (%)
*Cure #1
0 .2
* Cure #1 – 7 day/R.T.
** Cure #2 24 hr/R.T. + 8hr/180 F (82 C)
TECHNICAL DATA SHEET
SikaBiresin CR94
February 19, Version 02 /2019
4
PHYSICAL PROPERTIES CR94/CH94-6 (Slow)
Composition RESIN
SikaBiresin CR94
HARDENER
SikaBiresin CH94 6
MIXED
Mix ratio by weight
Mix ratio by volume at 25 C
100
100
27
33
100/27
100/33
3/1
Aspect Liquid Liquid Liquid
Color Hazy Clear Clear Clear
Viscosity at 25 C (Cps) 6,000 8,000 10 – 18 ~ 1,000
Specific gravity at 25 C lbs./gal
(g/cc)
ASTM D792 9.6
(1.15)
7.7
(0.92)
9.1
(1.09)
Gel time at 77 F
(150 grams) (25 C)
(minutes) 110-160
MECHANICAL PROPERTIES at 23 C (Neat cured properties)
Hardness (Shore D)
*Cure #1
**Cure #2
ASTM D-2240
86 – 90
86 – 90
Flexural Strength (psi)
*Cure #1
**Cure #2
ASTM D-790
11,300
16,400
Flexural Modulus (psi)
*Cure #1
Flexural Modulus
*Cure #2
ASTM D-790
504,000
442,000
Tensile Strength (psi)
*Cure #1
**Cure #2
ASTM D-638
6,600
11,300
Tensile Modulus (psi)
*Cure #1
**Cure #2
ASTM D-638
260,000
251,000
Tensile Elongation (psi)
*Cure #1
**Cure #2
ASTM D-638
3.2
7.0
Glass transition temperature F ( C) TMA
*Cure #1
**Cure #2
ASTM E1545
136 (58)
194 (90)
Moisture Absorption (%)
*Cure #1
0.2
* Cure #1 – 7 day/R.T.
** Cure #2 24 hr/R.T. + 8hr/180 F (82 C)
TECHNICAL DATA SHEET
SikaBiresin CR94
February 19, Version 02 /2019
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Viscosity / Gel Profile – CR94 resin with CH94-1 fast (L 141), CH94-3 medium (L 142), CH94-6 slow (L 143) hardeners
PROCESSING
After mixing according to the indicated ratio, carry out impregnation of the reinforcements.
To ensure an optimal use and a good impregnation, please use packaging stored at a temperature
above 15 C.
CURE CONDITIONS
In order to avoid any risk of distortion or tooling shrinkage a precise curing cycle must be observed. Demolding takes place only after a 24 hour R.T. minimum or 16 hour pre- curing at 40 C-60 C. Material
can be used with R.T. cure only or with some (Post-cure) carried out.
HANDLING PRECAUTIONS
Normal health and safety precautions should be observed when handling these products :
Ensure good ventilation.
Wear gloves, glasses and protective clothes.
For further information, please consult the Safety Data Sheets.
STORAGE CONDITIONS
Product shelf life of resin and hardener is 2 years when stored in original unopened containers
between 65 77 F (15 25 C). Any opened can must be tightly closed. Any opened can must be
tightly closed.
PACKAGING
Packaging information on request, please contact your local sales representative or find your local
contact on www.sikaadvancedresins.us
TECHNICAL DATA SHEET
SikaBiresin CR94
February 19, Version 02 /2019
6
LEGAL NOTICE
The information, and, in particular, the recommendations relating to the application and end-use of
Sika products, are given in good faith based on Sika s current knowledge and experience of the products
when properly stored, handled and applied under normal conditions in accordance with Sika s
recommendations. In practice, the differences in materials, substrates and actual site conditions are
such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability
arising out of any legal relationship whatsoever, can be inferred either from this information, or from
any written recommendations, or from any other advice offered. The user of the product must test the
product s suitability for the intended application and purpose. Sika reserves the right to change the
properties of its products. The proprietary rights of third parties must be observed. All orders are
accepted subject to our current terms of sale and delivery. Users must always refer to the most recent
issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on
request.
CONTACT
UNITED STATES
Sika Corporation
30800 Stephenson Highway
Madison Heights, Michigan 48071 USA
Tel.: (+1) 248 588- 2270
Fax: (+1) 248 577-0810
E-mail: advanced.resins@us.sika.com
Website: www.sikaadvancedresins.us