Epoxy Resin Loaded with Fillers. How to get new resin/hardener stoichiometry¡

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Epoxy Resin Loaded with Fillers. How to get new resin/hardener stoichiometry¡

Author	Message
Dessert Mix	Dessert Mix posted 7 Years Ago HOT Topic Details
Group: Forum Members Posts: 24, Visits: 69	Hi, anyody can help me? how to determine the new resin/hardener ratio when liquid epoxy resin has been loaded with intert fillers to form a putty? first case is when hardener is neat, and second case is when hardener also has been filled with inert loads. Thanks!
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f1rob	f1rob posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 237, Visits: 4.8K	You mix your resin an hardner then add your filler Fillers don't affect anything
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Dessert Mix	Dessert Mix posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 24, Visits: 69	+x f1rob - 10/28/2018 4:18:07 PM You mix your resin an hardner then add your filler Fillers don't affect anything not too easy, if a 2:1 resin/hardener ratio is used when both are neat, it is more hardener required if you add 200% of talc powder over the resin. There is a formulation that involves EEW, AHEW , gmol/eq, but I have not find it still
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f1rob	f1rob posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 237, Visits: 4.8K	Don't know why talc would be different ?,never used it but with slate powder,mica fill,micro ballons an every other thickner just used normal ratio
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Dessert Mix	Dessert Mix posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 24, Visits: 69	+x f1rob - 10/28/2018 7:57:59 PM Don't know why talc would be different ?,never used it but with slate powder,mica fill,micro ballons an every other thickner just used normal ratio yes, at the end, it will hard, but time is the matter.
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Steve Broad	Steve Broad posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	+x Dessert Mix - 10/28/2018 9:15:04 PM +x f1rob - 10/28/2018 7:57:59 PM Don't know why talc would be different ?,never used it but with slate powder,mica fill,micro ballons an every other thickner just used normal ratio yes, at the end, it will hard, but time is the matter. Keep to the recommended ratio. Vary from this and the resin will not cure properly, as I understand it. If you want a quicker cure time, use a fast hardener and a slight increase in the surrounding temperature. Edited 7 Years Ago by Steve Broad
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Hanaldo	Hanaldo posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	Mmmm, no... I use talc all the time. The ratio stays the same. If it's a 2:1 ratio, it doesn't matter how much talc you add, the ratio of resin to hardener stays at 2:1. If you have 1000g of resin, you need 500g of hardener, no matter how much talc you added. You can add 2kg or 5kg of talc, you still have 1000g of resin and need 500g of hardener.
	Reply Like 2
Fasta	Fasta posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	I"m with Hanaldo. I do a similar with a project that uses 2 part polyurethane resin and I only have a 12 minute pot life, I need all 12 minutes just to apply my resin to the job. Mix the additives to your resin base, 1000g like Hanaldo said, then add your 500g hardener. Fastacraft Facebook page
	Reply Like 3