Dissolving the PU foam on a solvent ?

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Dissolving the PU foam on a solvent ?

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Pertabolis	Pertabolis posted 13 Years Ago HOT Topic Details
Group: Forum Members Posts: 17, Visits: 193	Hi I was wondering if it was possible to dissolve the PU 80 low density model board in some solvents after having laminated a CF cloth around it ? The idea would be to - cut the foam to the target shape - apply the epoxy/CF cloth - dip the hole thing in a jar of acetone / other solvent Thanks for your help ! P.
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baja_patient	baja_patient posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 135, Visits: 1.6K	Hi, I'd like to apologize for the false information. I got my foams mixed up. I built a surfboard once and regular styrofoam and high density closed pore foam were non compatible with polyester. As for the acetone, I poured it into a regular plastic drinking cup, the cheap throw-away kind which I assume is PVC, and the bottom just fell out instantly. I was using class A acetone, which I bought from an epoxy supplier specially to clean epoxy tools. As for dissolving the cured epoxy, I had a strong hunch that its chemical proof-to resistant when fully cured. It did however come to mind that in your uni-mould video, the first one, you use acetone in a spray bottle to tack the cloth to the cured resin. Then I remembered it was polyester. Anyways I am obviously by no means an expert and am learning everything I can. I now know more and will thus shut up for a while! Good luck with the project. Cheers
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steveastroUK	steveastroUK posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 21, Visits: 78	[quote][b]baja_patient (30/04/2012)As for the acetone, I poured it into a regular plastic drinking cup, the cheap throw-away kind which I assume is PVC, and the bottom just fell out instantly. I was using class A acetone, which I bought from an epoxy supplier specially to clean epoxy tools. /quote] Usually polySTYRENE, NOT PVC - which is as much of a sod to dissolve as PU. Steve
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baja_patient	baja_patient posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 135, Visits: 1.6K	steveastroUK (05/05/2012) [quote][b]baja_patient (30/04/2012)As for the acetone, I poured it into a regular plastic drinking cup, the cheap throw-away kind which I assume is PVC, and the bottom just fell out instantly. I was using class A acetone, which I bought from an epoxy supplier specially to clean epoxy tools. /quote] Usually polySTYRENE, NOT PVC - which is as much of a sod to dissolve as PU. Steve Hmm yeah probably, but the cup was clear. Didnt know you could get clear polystyrene cups. not the white coffee ones. Nevermind, I use glass now and no solvent will dissolve that.
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steveastroUK	steveastroUK posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 21, Visits: 78	Yeah, polystyrenes come in clear as well as expanded forms.
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Pertabolis	Pertabolis posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 17, Visits: 193	baja_patient (06/05/2012) Nevermind, I use glass now and no solvent will dissolve that. Unless yo are using fluoridric acid !
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