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Technical Data Sheet

 

Most recent revision date: October 2007

 

 

EPIKOTE Resin 720 + EPIKURE Curing Agent 874

 

2-Component cycloaliphatic casting system for reaction injection moulding and conventional casting intended for outdoor applications.

 

 

Product Description

EPIKOTETM Resin - EPIKURETMCuring Agent 874 is a two component epoxy system for liquid injection moulding and other casting technologies. As a result of its chemical composition, the system has advantageous processing properties and also very good mechanical, electrical and thermal characteristics.

 

 

EPIKOTETM Resin 720

100.0 pbw

EPIKURETM Curing Agent 874

81.0 pbw

 

 

Application Areas/Suggested Uses

Manufacture of electrically insulating components (e. g. apparatus parts, bushings, post-type insulators, power-, voltage- and current transformers) for medium-and high-voltage outdoor applications.

Benefits

  • Long pot life at room temperature
  • Low shrinkage
  • Low exothermic reaction
  • No filler sedimentation up to 40° C
  • Resin available in natural or RAL 3016 color
 

Sales Properties

EPIKOTETM Resin 720

Unit

Value
 
Test Method / Standard
 

Viscosity at 25 C

mPas

17000 - 20000

DIN 53019

Epoxy equivalent*

g/equiv.

490 - 495

DIN 16945

Density at 20C*

g/cm3

1.80 1.90

DIN EN ISO 2811-2

Available in natural or RAL 3016 color tone

 

 

 

Cycloaliphatic epoxy resin, filled with silica flour pre-treated with silanes

* typical property

 

EPIKURETM Curing Agent 874

Unit

Value
 
Test Method / Standard
 

Viscosity at 25 C

mPas

12500 -15500

DIN 53019

Gel time at 100 C

( EPIKOTE Resin 720 +

EPIKURE Curing Agent 874

at mix ratio of 100 : 81 pbw )

min:sec

48:00 56:00

DIN 16945

Weight equivalent*

g/equiv.

428 - 433

DIN 16945

Density at 20 C

g/cm3

1.80 - 1.90

DIN EN ISO 2811-2

* typical property

 

 

Typical Properties of cured compound

 

Curing conditions: 4 h at 80 C + 8 h - 140 C

Mixture   100.0 pbw EPIKOTETM Resin 720

                 81.0 pbw EPIKURETM Curing Agent 874

 

Property

Unit

Target Value

Test Method/Standard

Flexural Strength

[MPa]

140 - 160

ISO 178

Deflection

[mm]

2 - 3

ISO 178

Tensile Strength

[MPa]

80 - 100

ISO 527

Impact Strength

[mJ/mm]

11 - 15

ISO 604

Compressive Strength

[MPa]

180 - 200

ISO 604

Heat Deflection Temperature (Martens)

[C]

80 - 90

 

Glass Transition Temperature

[C]

75- 85

IEC 61006

Coefficient of Linear Thermal Expansion

[10-6/K]

30 - 40

DIN 51045

Thermal Conductivity

[W/mK]

0.9

ASTM C 177

Decomposition temperature

[C]

350

VSM 77113

Water Absorption 24 h / RT

[%]

0.05 - 0.10

ISO/R 62

Spec. Volume Resistivity

[Wcm]

1015

IEC 93

Surface Resistance

[W]

1013

IEC 93

Electric Strength

[KV/mm]

20 - 30

IEC 60243

Dissipation Factor tan d (25 C, 50 Hz)

 

0.02 - 0.03

IEC 60250

Dielectric constant (25 C, 50 Hz)

 

3.9 - 4.2

ISO 178

Tracking Resistance

 

CTI 600

IEC 60112

Arc Tracking

[s]

185 - 190

ASTM D 495

 

Safety, Storage & Handling

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

EPIKOTETMResin 720 + EPIKURETM Curing Agent 874 should be stored at room temperature such that moisture is excluded and in the original containers tightly closed. Under these conditions the components can be stored for a minimum of 12 months from the date of certification.

 

® 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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