Using real earth pigments in flexible resin

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Using real earth pigments in flexible resin - EF80

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John Wilkinson	John Wilkinson posted 7 Years Ago HOT Topic Details
Group: Forum Members Posts: 11, Visits: 26	I build skin on frame boats. The skin is nylon. I use F80 flexible resin to waterproof the cloth. I have recently started using a white cloth and a customer wants the cloth coloured. The colour of the finish does not need to be particularly even. Problems: 1. I have been told coloring the cloth may reduce the adhesion of the epoxy and nylon is not great for taking up dye. . . . therefore colour the waterproofing layer. Is it correct that dyed cloth may reduce the epoxy adhesion.? 2. I understand that colouring the epoxy should be done with either a purpose mixed pigment or that pigmenting it using solid pigment should be done by mixing the pigment thoroughly with the resin first to ensure there are no lumps/clumps, and then adding the hardener. Are rare earth pigments okay to use or will they inhibit the epoxy acting as it should?
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John Wilkinson	John Wilkinson posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 11, Visits: 26	+x Matthieu Libeert - 3/7/2018 4:43:14 PM +x John Wilkinson - 3/7/2018 4:20:19 PM I build skin on frame boats. The skin is nylon. I use F80 flexible resin to waterproof the cloth. I have recently started using a white cloth and a customer wants the cloth coloured. The colour of the finish does not need to be particularly even. Problems: 1. I have been told coloring the cloth may reduce the adhesion of the epoxy and nylon is not great for taking up dye. . . . therefore colour the waterproofing layer. Is it correct that dyed cloth may reduce the epoxy adhesion.? 2. I understand that colouring the epoxy should be done with either a purpose mixed pigment or that pigmenting it using solid pigment should be done by mixing the pigment thoroughly with the resin first to ensure there are no lumps/clumps, and then adding the hardener. Are rare earth pigments okay to use or will they inhibit the epoxy acting as it should? I might be wrong but in general epoxy wont stick well to nylon, so you already might have a problem there...there are some peelplies that are made from nylon Thanks for the reply Matt. So far so good. It's a few years since the first boat and no problems with adhesion as yet.
	Reply Like 2
John Wilkinson	John Wilkinson posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 11, Visits: 26	+x John Wilkinson - 3/7/2018 4:55:33 PM +x Matthieu Libeert - 3/7/2018 4:43:14 PM +x John Wilkinson - 3/7/2018 4:20:19 PM I build skin on frame boats. The skin is nylon. I use F80 flexible resin to waterproof the cloth. I have recently started using a white cloth and a customer wants the cloth coloured. The colour of the finish does not need to be particularly even. Problems: 1. I have been told coloring the cloth may reduce the adhesion of the epoxy and nylon is not great for taking up dye. . . . therefore colour the waterproofing layer. Is it correct that dyed cloth may reduce the epoxy adhesion.? 2. I understand that colouring the epoxy should be done with either a purpose mixed pigment or that pigmenting it using solid pigment should be done by mixing the pigment thoroughly with the resin first to ensure there are no lumps/clumps, and then adding the hardener. Are rare earth pigments okay to use or will they inhibit the epoxy acting as it should? I might be wrong but in general epoxy wont stick well to nylon, so you already might have a problem there...there are some peelplies that are made from nylon Thanks for the reply Matt. So far so good. It's a few years since the first boat and no problems with adhesion as yet. It's a woven nylon.
	Reply Like 3