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Technical Data Sheet

 

Re-issued August 2007

 

EPIKURE™ Curing Agent 3125

 

Product Description

EPIKURE™ Curing Agent 3125 is a medium viscosity reactive polyamide curing agent, based on dimerized fatty acid and poly-amines. This is a general purpose curing agent for epoxy resins that is suitable for many uses including solvent-borne coatings, potting, adhesives, caulks and grouts. EPIKURE Curing Agent 3125 can be used with a wide range of epoxy resins and can be blended with other amine-based hardeners.

 

Application Areas/Suggested Uses

  • Maintenance and marine coatings
  • Coal tar epoxy systems
  • Potting, casting, and encapsulation
  • Adhesives, caulks and grouts

 

Benefits

  • Excellent adhesion
  • Good water resistance
  • Good toughness and flexibility
  • Good pigment and substrate wetting

 

Sales Specification

Property

Units

Value

Test Method/Standard

Amine value

mg/g

330-360

ASTM D2896

Viscosity at 40°C

cP

8000-12000

ASTM D2196

Color

Gardner

<9

ASTM D1544

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Equivalent weight, approx.

AHEW

127

 

Density @ 25 °C

lbs/gal

8.1

 

Flash point

°C

>110

ASTM D3278

Appearance

 

Clear and free of foreign particles

 

 

 

 

Mix ratio

 

 

 

Epoxy Resin (EEW 190)

phr

50-70

 

Epoxy Resin (EEW 525)

phr

33

 

 

 

 

 

 

 

Performance Properties

 

Table 1 / Properties of epoxy resins in combination with EPIKURE Curing Agent 3125 – all formulations cured 1 day at RT plus 2 hrs. at 100 °C

 

Composition

Units

A

B

C

D

E

EPON™ Resin 828

 

100

100

EPON Resin 813

 

100

EPON Resin 815C

 

100

EPON Resin 8132

 

100

EPIKURE Curing Agent 3125

 

54

67

67

67

62

 

 

 

 

 

 

 

Handling Properties @ 25°C

 

 

 

 

 

 

Resin viscosity

cP

14,000

14,000

650

725

700

System viscosity

cP

21,400

22,650

4475

4500

4300

Gel time @ 100 g mass

min.

97

111

217

211

240

 

 

 

 

 

 

 

Cured State Properties

 

 

 

 

 

 

Heat deflection temperature

°C

75

72

50

51

44

Tensile strength

psi

8590

7580

6000

6000

4420

Tensile modulus

ksi

380

340

350

310

240

Tensile elongation

%

3.7

5.6

6.7

10.7

10.0

Flexural strength

psi

12,760

12,010

11,790

10,250

7840

Flexural modulus

ksi

350

340

350

300

230

Compression strength

psi

33,010

31,890

32,130

N/A

23,220

Compression modulus

ksi

280

260

280

240

200

Hardness

Durometer D

83

79

82

80

73

 

Table 2 / Chemical resistance properties 1 of epoxy resins cured with EPIKURE Curing Agent 3125 – all formulations cured 1 day at RT plus 2 hrs. at 100 °C

 

Percent Weight Gain

Units

A

B

C

D

E

Water

 

 

 

 

 

 

After 24 hours

%

0.12

0.20

0.17

0.22

0.19

After 7 days

%

0.46

0.54

0.53

0.70

0.63

5% Acetic acid

 

 

 

 

 

 

After 24 hours

%

0.58

0.57

1.27

1.50

1.07

After 7 days

%

1.72

1.76

3.89

4.37

3.13

50% xylene/50% isopropanol

 

 

 

 

 

 

After 24 hours

%

2.89

2.87

13.83

9.84

13.20

After 7 days

%

8.07

7.94

fragmented

fragmented

fragmented

1 Percent weight gain of 3" x 1" x 0.125" specimens immersed at 23 °C.

 

 

Safety, Storage & Handling

Please refer to the MSDS for the most current Safety and Handling information.

 

Please refer to the Hexion web site for Shelf Life and recommended Storage information.

 

Exposure to these materials should be minimized and avoided, if feasible, through the observance of proper precautions, use of appropriate engineering controls and proper personal protective clothing and equipment, and adherence to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the Material Safety Data Sheet (MSDS) for these and all other products being used are understood by all persons who will work with them. Questions and requests for information on Hexion, Inc. ("Hexion") products should be directed to your Hexion sales representative, or the nearest Hexion sales office. Information and MSDSs on non-Hexion products should be obtained from the respective manufacturer.

 

Packaging

Available in bulk and drum quantities.

 

 

Contact Information

For product prices, availability, or order placement, please contact customer service:

www.hexion.com/Contacts/

 

For literature and technical assistance, visit our website at: www.hexion.com

 

® and ™ Licensed trademarks of Hexion Inc.

DISCLAIMER

The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

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