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Technical Data Sheet

 

Re-issued August 2007

 

 

EPIKURE™ Curing Agent 3378

 

 

Product Description

EPIKURE™ Curing Agent 3378 is a relatively low viscosity, modified amine adduct, light-colored epoxy curing agent which, when combined with epoxy resins, cures to clear, tack-free films under low-temperature and high humidity conditions.

 

Application Areas/Suggested Uses

  • Primers and topcoats for non-potable water containers and related equipment
  • Solvent-free marine coatings
  • Tough, flexible, fast-setting, high-clarity adhesives

 

Benefits

  • Fast, tack-free cures
  • Long pot-life
  • Good through- cure at low temperatures
  • Good corrosion resistance
  • Excellent clarity and low color
  • Self-leveling properties

 

Sales Specification

Property

Units

Value

Test Method/Standard

Amine value1

mg/g

245-265

ASTM D2896

Viscosity2 at 25°C

cP

2,200-2,800

ASTM D2196

Color3

Gardner

3

ASTM D1544

 

 

 

 

1 ASTM D2896 (Amine Nitrogen and Amine Value by Potentiometric Perchloric Acid Titration)

2 ASTM D2196 (Brookfield Viscometer - Small Sample Adapter, about 10 grams).

3 ASTM D1544 (Gardner Color Scale).

 

Typical Properties

Property

Units

Value

Test Method/Standard

Equivalent weight, approx.

AHEW

114

 

Density1

lbs/gal

8.5

ASTM D1475

Non-volatile materials

% by wt.

100.0

 

 

 

 

 

1 Weight per Gallon Cup.

 

 

Performance Properties

 

Table 1 / Properties of EPON™ Resin 828 cured with EPIKURE Curing Agent 3378.

 

 

Method

Units

Value

EPON™ Resin 828

 

pbw

100

EPIKURE Curing Agent 3378

 

pbw

61

 

 

 

 

Handling Properties @ 25°C

 

 

 

Gel Time1, 100 gram mass

 

min

27

 

 

 

 

Cured State Properties

 

 

 

Heat Deflection Temperature2

ASTM D648

°C

44

Tensile Strength3

ASTM D638

psi

8,739

Tensile Elongation

 

%

2.6

Tensile Modulus

 

ksi

496

Compressive Strength4

 

psi

19,059

Compressive Modulus

 

ksi

804

Hardness5

 

Durometer D

85

Cure Schedule @ 25°C (77 °F)

 

days

14

 

 

 

 

Chemical Resistance

 

 

 

Water

 

%

0.1

5% Acetic Acid

 

%

0.2

50% Xylene/50% Isopropanol

 

%

1.0

1 SHYODU Gel Timer

2 HDT ASTM D648 (Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position)

3 ASTM D638 (Tensile Properties of Plastics)

4 ASTM D695 (Compressive Properties of Rigid Plastics)

5 ASTM D2240 (Standard Test Method for Rubber Property-Durometer Hardness)

6 Percent weight gain after immersion for 24 hours @ 25°C - specimen size 1/8” X 1” X 3”


 

Table 2 / Physical properties of HELOXY™ modified EPON Resin 828 cured with EPIKURE Curing Agent EC3378 at the following temperatures: 4, 10, 25 and 121° C.

 

Composition

Unit

1

2

3

4

EPON Resin 828

pbw

100

88

87

80

HELOXY Modifier 65

pbw

 

12

 

 

HELOXY Modifier 8

pbw

 

 

13

 

HELOXY Modifier 62

pbw

 

 

 

20

EPIKURE Curing Agent 3378

pbw

60

60

60

60

 

 

 

 

 

 

Handling Properties

 

 

 

 

 

Gel time @ 25°C, 1 lb mass

minutes

23

26

30

25

Cure Conditions

 

@ 25° C (77°F), 50% Relative Humidity

 

 

 

 

 

 

Hardness 1

 

 

 

 

 

24 hours

Durometer D

86

70

53

50

2 days

Durometer D

86

78

67

61

7 days

Durometer D

99

95

85

84

 

 

 

 

 

 

Film Properties

 

 

 

 

 

1 day

 

Clear, Tack-free

Cure Conditions

 

@ 10°C (50°F), 50% Relative Humidity

 

 

 

 

 

 

Hardness

 

 

 

 

 

24 hours

Durometer D

54

34

34

34

2 days

Durometer D

77

63

50

41

7 days

Durometer D

92

80

61

53

14 days

Durometer D

92

84

70

53

 

 

 

 

 

 

Film Properties

 

 

 

 

 

1 day

 

Clear, Slight tack

7 days

 

Clear, Tack-free

Cure Conditions

 

@ 4°C (40°F), 50% Relative Humidity

Hardness

 

 

 

 

 

24 hours

Durometer D

35

33

33

33

2 days

Durometer D

85

57

55

47

7 days

Durometer D

94

89

74

65

14 days

Durometer D

95

91

86

73

 

 

 

 

 

 

Film Properties

 

 

 

 

 

1 day

 

Clear, Slight tack

7 days

 

Clear, Tack-free

 

 

 

 

 

 

Hardness @ 121°C (250°F)

 

 

 

 

 

1 hour

Durometer D

100

99

93

100

 

 

 

 

 

 

Weight Loss, @ 121°C (250°F)

 

 

 

 

 

24 hours

%

3.37

3.51

3.19

3.49

1 ASTM D2240 (Standard Test Method for Rubber Property-Durometer Hardness


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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