| 配方类型： |
COATINGS |
| 配方说明： |
Pre-Preg Laminate Varnish |
| 配方组成： |
Dicyandiamide/4.0
BDMA/0.3
Dimethyl formamide/15.0
D.E.R. 661 A80/125.0
dowanol EM/15.0 |
| 配制方法： |
Blend the DMF, "Dowanol" EM, and dicy. and then heat to 110'F. Then cool to room temperature and do the following: add the resin solution, add additional acetone as desired and agitate thoroughly. Add the BDMA with thorough agitation at least 8 hours before using. Use on glass cloth in tower at 300-325'F for six minutes. Prepared in this manner, the varnish is stable for over three months at room temperature. Storage below 65'F. can cause crystallization of dicy. from solution. Although heating to 80-90'F. will usually restore solution, the acetone solvent makes this procedure hazardous. |
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