milky laminating epoxy?

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milky laminating epoxy?

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odo	odo posted 13 Years Ago HOT Topic Details
Group: Awaiting Activation Posts: 5, Visits: 66	hi guys, i tried to skin a plastic piece about 1sq meter. i used carbon base coat, then diolen and after that layer of carbon fibre laminating epoxy resin. i applied laminating epoxy with plastic card. so far so good. after 48 hours i tried to apply second layer (same technique) but after 5 minutes of flattening with card the epoxy started to be white/milky (i guess because of micro air bubles). the result is that diolen is not visible because second layer is milky. the rest of epoxy i didn't use is on picture (surplus epoxy from board i put back to mixing pot). next day the surplus epoxy in mixing pot hasn't flat surface and had bilions microair bubles. i am sure i did something wrong but don't know what... at the begining the epoxy had some air bubles (only few as usual) but when i started a work with plastic card it became to have more and more air bubles and result was the whole epoxy was white. do you have any similar experience pls? your help is more than appreciated ondrej . Attachments photo.JPG (396 views, 413.00 KB)
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PAYBACK	PAYBACK posted 13 Years Ago HOT Post Details
Group: Awaiting Activation Posts: 4, Visits: 65	Looks like that pot went off to quickly. To much hardener?
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odo	odo posted 13 Years Ago HOT Post Details
Group: Awaiting Activation Posts: 5, Visits: 66	Hello. I am sure the ammount of hardener was ok I mixed epoxy 40+20 ml as usual. Maybe when i pushed plastic card and flattening epoxy on surface it produced a lot of heat...? I really don't know...
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r0bsk1	r0bsk1 posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 38, Visits: 307	Epoxy tends to go cloudy if its worked too much. It'll be due to moisture in the air and trapped in the resin. I see this when laminating in the colder months and late at night Applying heat to the resin while curing will remove the clouding.
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benet	benet posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 59, Visits: 373	I would like to know exactly what the plastic card was, i once used a piece of plastic cut from an ice cream tub to smooth out epoxy, i smoothed really well but something made micro bubbles appear on that job (not as badly as in your pot !!) and the only thing i thought i had done differently was to use the soft plastic spreader. ? !. I dont use it anymore, i think you have to very careful when adding anything particuly other untried plastics to a resin curing environment.
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