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Fast Cure, Low Viscosity, Highly Flexible, Systems
using EPIKURE鈩? Curing Agent 3164, EPIKURE Curing
Agent 9550, and EPON鈩? Resin 8111
RP: 4036 Issued: July 2004
Introduction EPIKURE Curing Agent 3164 is a proprietary oligomeric polyamine for structural and
coating applications. It features exceptional strength, toughness and elongation in epoxy
formulations. However, the high viscosity and slower cure speed can make it less
attractive for use in coating formulations. Enhanced formulations can be prepared using
EPIKURE Curing Agent 9550 to lower the viscosity and EPON Resin 8111 to accelerate the
cure. These changes minimize the impact on properties, especially the flexibility, while
retaining a high degree of toughness.
鈥?
Features Maintains high flexibility 鈥? percent elongation greater than 100%
鈥? Lower mix viscosities
鈥? Faster dry times in under 24 hours
鈥? Resistant to surface blush and amine exudates
鈥?
Suggested Uses Flexible joint fillers
鈥? Adhesives
鈥? Castings
鈥? Impact resistant coatings
鈥? High flexibility coatings
EPIKOTE鈩? EPON 鈩? EPIKURE鈩? EPI-REZ鈩? HELOXY鈩? CARDURA鈩? VEOVA鈩?
SC: 4036 Fast Cure, Low Viscosity, Highly Flexible, Systems using EPIKURE鈩? Curing Agent 3164, EPIKURE Curing Agent 9550, and
EPON鈩? Resin 8111 Page 2
Typical Properties Test Method Unit Value
EPON Resin 8111
Epoxide Equivalent Weight, (EEW) ASTM D1652 g/eq 140
Viscosity @ 25掳C ASTM D445 cP 800-1,100
Color ASTM D1544 Gardner <1
Density Wt. per gallon cup lbs/gal 9.5
EPIKURE Curing Agent 3164
Equivalent Weight, (AHEW), approx. 256
Viscosity @ 25掳C ASTM D2196 cP 7,000 -10,000
Color ASTM D1544 Gardner <12
Density Wt. per gallon cup lbs/gal 8.2
EPIKURE Curing Agent 9550
Equivalent Weight, (AHEW), approx. 58 - 62
Viscosity @ 25掳C ASTM D2196 cP 8 - 10
Color ASTM D1544 Gardner <1
Density Wt. per gallon cup lbs/gal 7.9
General A blend of EPIKURE Curing Agent 3164 and EPIKURE Curing Agent 9550 (92.5:7.5) will
Information reduce the curative viscosity by 50%, while retaining the flexibility of the neat EPIKURE
3164. This blend also has a longer pot life, and is tougher and more chemically resistant.
Both the neat EPIKURE 3164, and the blended curative can be accelerated for faster
drying times using a multifunctional polyacrylate-modified resin like EPON Resin 8111 with
minimal loss in flexibility. Table 1 provides comparative data for these systems. Other,
lower functionality, polyacrylate-modified resins like EPON 8021, EPON 8161, and EPON
8115 will NOT accelerate the cure of EPIKURE 3164, or the blend curative.
Table 2 presents information on the superior flexibility of the EPIKURE 3164/ EPIKURE 9550
blend when compared with EPIKURE Curing Agent 3125, at two combining ratios; EPIKURE
Curing Agent 3266, and EPIKURE 3164. The EPIKURE 3125 is a standard polyamide curative
with a non critical combining ratio. The EPIKURE 3266 is another flexible curative.
EPIKOTE鈩? EPON 鈩? EPIKURE鈩? EPI-REZ鈩? HELOXY鈩? CARDURA鈩? VEOVA鈩?
SC: 4036 Fast Cure, Low Viscosity, Highly Flexible, Systems using EPIKURE鈩? Curing Agent 3164, EPIKURE Curing Agent 9550, and
EPON鈩? Resin 8111 Page 3
Performance Table 1 / Properties of Epoxy Resins in Combination with EPIKURE鈩? Curing Agent
Properties 3164 and a blend of EPIKURE Curing Agent 9550 with EPIKURE 3164.
Method Units A B C D
Composition (parts by weight)
EPON Resin 8132 pbw 100 100
EPON Resin 828 pbw 30 30
EPON Resin 8111 pbw 50 50
CARDURA鈩? E-10P pbw 20 20
EPIKURE Curing Agent 3164 pbw 125 92.5 152 114
EPIKURE Curing Agent 9550 pbw 7.5 9
Handling Properties @ 25掳C
Resin Viscosity ASTM
Resin (or resin blend) D2196 cP 600 600 371 371
Curative (or curative blend) cP 10,300 4,575 10,300 4,575
Mix cP 3,230 1,900 6,900 4,000
Gel time, 100 gram mass SHYODU min. 82 138 27 28
Thin Film Dry Time (6 mil) ASTM
Dry to Touch D5895 hrs 10 11.2 0.8 1.7
Cotton Free hrs >24 >24 1.4 2
Thru Dry hrs >24 >24 16 9.2
Cured State Properties
Cure Schedule 24 hrs @ RT, then 2 hrs @ 100掳C
Tear Strength ASTM lb/in 60 270 43 61
D624
Tensile ASTM
Strength D638 psi 695 1651 359 526
Elongation % 189 233 160 158
Modulus psi --- --- 317 495
Hardness, Durometer D ASTM
D2240
7 days @ RT D 45 36 25 21
24 hrs @ RT, 2 hrs @ 100C D 19 31 25 25
1
Chemical Resistance
Water % 0.9 0.7 1.1 0.8
5% acetic acid % 44 --- 38 37
50/50 xylene/IPA % 295 208 179 121
1
Values reported as percent weight gain (3鈥漻1鈥漻0.125鈥? specimens) after immersion for 24 hours @ 23掳C.
EPIKOTE鈩? EPON 鈩? EPIKURE鈩? EPI-REZ鈩? HELOXY鈩? CARDURA鈩? VEOVA鈩?
SC: 4036 Fast Cure, Low Viscosity, Highly Flexible, Systems using EPIKURE鈩? Curing Agent 3164, EPIKURE Curing Agent 9550, and
EPON鈩? Resin 8111 Page 4
Performance Table 2 / Properties of EPON Resin 8132 with EPIKURE Curing Agent 3125, a standard
Properties polyamide curative with a non critical combining ratio; EPIKURE Curing Agent 3164 and
(cont.) EPIKURE Curing Agent 3266, two flexibilizing curatives; and the EPIKURE 9550 / EPIKURE
3164 blend.
Method Units A B C D E
Composition
(parts by weight)
EPON Resin 8132 pbw 100 100 100 100 100
EPIKURE Curing Agent 3125 pbw 114 200
EPIKURE Curing Agent 3266 pbw 133
EPIKURE Curing Agent 3164 pbw 125 92.5
EPIKURE Curing Agent 9550 pbw 7.5
Handling Properties @ 25掳C
Resin Viscosity ASTM
Resin D2196 cP 600 600 600 600 600
Curative (or curative blend) cP 63,300 63,300 2,545 10,300 4,575
Cured State Properties
Cure Schedule 24 hrs @ RT, then 2 hrs @ 100掳C
Tear Strength ASTM lb/in 399 35 74 60 270
D624
Tensile ASTM
Strength D638 psi 2,610 99 168 695 1,651
Elongation % 98 111 149 189 233
Modulus psi 44 0.16 154 --- ---
EPIKOTE鈩? EPON 鈩? EPIKURE鈩? EPI-REZ鈩? HELOXY鈩? CARDURA鈩? VEOVA鈩?
Resolution Performance Products
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EPIKOTE鈩? EPON 鈩? EPIKURE鈩? EPI-REZ鈩? HELOXY鈩? CARDURA鈩? VEOVA鈩?
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