WINNING  EPOXY  RESIN  COMPONENTS

                WK-903A / WK-581H

PROPERTIES OF UNCURED MATERIAL

1.  Appearance：              903A        Black liquid
                              581H        Brown liquid
2.  Viscosity：               903A       
                              581H       
3.  Density：                 903A       
                              581H       
4.  Mix Ratio：                           903A/581H :
5.  Pot Life（mixture）      (100gm)      25℃ ： 1  Hour.
6.  Gel Time：                            25℃ ： 2  Hours. 
7.  Curing Condition：                    25℃ ： 8  Hours

PROPERTIES OF CURED………………… 7 DAYS CURED @25℃

H. D. T.                ASTM   D   648      ℃                 100

Flexural Strength       ASTM   D   790      Kgf/㎜2            8.0

Tensile Strength        ASTM D 638           Kgf/㎜2           4.5 

Adhesive Strength                            Kgf/㎝            82

Hardness                ASTM   D  2240       Shore D           90
                                                              
Volume Resistance       ASTM   D   257       ohm-cm            2.7 X1016

Dielectric Constant     ASTM   D   150       @25℃, 1 KHz      3.8

Dielectric Strength     2 ㎜.                KV/㎜             22.0

Moisture absorption     ASTM   D   570       @100℃/4 Hours.