By ana - 8/27/2020 7:57:51 PM
hi
i am producing a plate with polyester resin and fumed silica as filler and gel coat in closed mold by casting . i need to know something
1- can i add fumed silica to the gel coat and then spry it on the mold ?
2- for white color when i add cobalt to gel coat the color change from white to cream . can i add some dioxide titanium , TiO2 "
3 - what time is exactly de-molding time ? after reaching exothermic temperature ? or i should stay a while after exothermic temperature and then start de-molding ?
i will appreciate if help me and let me know what should i do
tanks in advance
Best Regards
peyman
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