WINXING  EPOXY  RESIN  COHPONENTS  COATING  SYSTEM

WK-921A/92IH
(For  P . C  BOARD  COATENG)

PROPERTIES  OF  UNCURED  MATERIAL:     
                                           WK-921A                          WK-921H
1.Appearance:                    Black  dense  liquid             Brow Liquid                                                                                                                             
2.Density                          1.6                             1.6                                              
3.Mix Ratio                       100                            50
4.Life ; (mixture) 100 Gm , @25℃                      30min  
5.Gel Time                                              @25℃ /4Hors
6.Curing Condition                                @25℃ /12Hors
                  
PROPERTIES  OF  CURED (Cured  Conditions……..7  days  cured   @25℃ )
H.  D.  T.                         ASTM    D   648         ℃               105
Flexural Strength              ASTM    D   790         Kgf/ mm           8.0
Tensile  Strength              ASTM    D   638                -          4.5
Adhesive Strength                                        Kgf/ cm           78
Hardeness                         ASTM    D    2240       Shore  D         88
Volume. Resistivity          ASTM    D    257         ohm-cm           ＞1016
Dielectric Constant           ASTM    D    150        @25℃,1 KHz       4.0
Dielectrec Strength         2 mm                        KV/mm             22.0                                 
Moisture absorption         ASTM    D    570         @100℃ / 4 Hrs    ＜0.1

NOTE:
* A  and  H  must  mix  thorought  until  the  color  is  unifrom.
* Pot-Life  is  depend  on  the  temperature  and  mixed  total  quantity.
  The  more  the  total  quantity  is ,  the  shorter  it  can  last .