供应WK-571A/B-1电子*组件灌封胶

PROPERTI*  OF  UNCURED  MATERIAL:     

1.Appearance:                           571A                                                       571B-

3.Density                                  

4.Mix Ratio                               

5.Life ; (mixture) @25℃          

6.Gel Time                                         

7.Curing Condition                                                   

PROPERTI*  OF  CURED ……………7  DAYS  CURED  @25℃ 

H.  D.  T.                   ASTM    D   648        ℃               110

Flexural Strength               ASTM    D   790         Kgf/mm2          8.0

Tensile  Strength              ASTM    D   638                -          4.5

Adhesive Strength                                         Kgf/mm2         83

Hardeness                     ASTM    D    2240        Shore  D         88

Volume. Resistivity            ASTM    D    257         ohm-cm           ＞1016

Dielectric Constant        ASTM    D    150         @25℃,1KHz       4.0

Dielectrec Strength         2 mm                        KV/mm             22.0 

Moisture absorption        ASTM    D    570         @100℃/ 4 Hrs    ＜0.1