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Technical Data Sheet

 

Re-issued August 2007

 

 

EPIKURE™ Curing Agent 3233

 

 

Product Description

EPIKURE Curing Agent 3233 is an unmodified, T403-type polyoxypropylenetriamine that has moderate reactivity, low viscosity, low color, low vapor pressure and high primary amine content. It resists “blush”, “bloom” and “sweat-out” in epoxy compositions. EPIKURE Curing Agent 3233 is a trifunctional primary amine curing agent with the idealized chemical structure shown below.

 

 

Application Areas/Suggested Uses

  • Composites (Fiber reinforced products)
  • General purpose casting and encapsulation
  • Adhesive compounds
  • Glaze and sealer high-build coatings

 

Benefits

  • Low viscosity and low vapor pressure
  • Light color and improved color retention compared to conventional amine-cured epoxy systems
  • Long pot life
  • Improved flexibility and good impact resistance

 

Sales Specification

Property

Units

Value

Test Method/Standard

Amine value

mg/g

343-370

 

Color

Pt-Co

50

ASTM D1209

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Equivalent weight

AHEW

81

 

Density

lbs/gal

8.2

ASTM D1475

Viscosity @ 25 °C

cP

~70

ASTM D2196

 

 

 

 

 

 

General Information

EPIKURE Curing Agent 3233 is an effective curing agent for most types of epoxy resin. It is compatible with modified epoxy resin blends and conventional bisphenol-A and bisphenol-F epoxy resins. Table 1 lists the cured state and handling properties

 

EPIKURE Curing Agent 3233 is compatible and can be used in combination with most amine curing agents (e.g. aliphatic and cycloaliphatic amines) and a wide range of modifiers (e.g. nonylphenol) to adjust handling characteristics or cured state properties. 

 

EPIKURE Curing Agent 3233 can be cured at room temperature or heat cured. Usually accelerators (e.g., EPIKURE 3253 or EPIKURE 3234) are added to speed room temperature cures.

 

Clean-out of EPIKURE 3233 in transfer lines and equipment can be accomplished with hot water and steam since it is a water-soluble amine.

 

Performance Properties

Table 1 / Physical Properties of EPON™ Resin 828 & 863 cured with EPIKURE Curing Agent 3233

 

 

Method

Units

A

B

EPON Resin 828

 

pbw

100

 

EPON Resin 863

 

pbw

 

100

EPIKURE Curing Agent 3233

 

pbw

43

48

 

 

 

 

 

Handling Properties @ 25°C

 

 

 

 

Viscosity, Initial

ASTM D2196

cP

1540

720

Gel Time, 100 gram mass

SHYODU

hrs

8.7

9.5

Gel Time @ 150 °C

Hot Plate

min.

2.0

1.8

Pot Life1

ASTM D2196

hrs

2.5

2.5

 

 

 

 

 

Cure Schedule

 

hrs / °C (°F)

2 / 80 (176)

3 / 125 (257) 

2 / 80 (176)

3 / 125 (257)

 

 

 

 

 

Cured State Properties

 

 

 

 

Heat Deflection Temperature

ASTM D648

°C

79

66

Tg by DSC – midpoint

ASTM D3418

°C

90

82

Tensile Strength

ASTM D638

psi

8,310

8,870

Tensile Elongation

 

%

5.6

4.1

Tensile Modulus

 

ksi

400

452

Flexural Strength

ASTM D790

psi

14,730

16,060

Flexural Modulus

 

ksi

441

502

Casting Density

 

g/cc

 

 

1Time to double initial viscosity

 

Graph 1 / Viscosity vs. Time at 25°C of EPON Resin 828 & 863 cured with EPIKURE Curing Agent 3233

 

EPIKURE 3233 Graph 1

 

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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