poly resin dose not eat Polyisocyanurate Foam

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poly resin dose not eat Polyisocyanurate Foam

Postby saywhatthat » Wed Aug 28, 2019 6:07 pm

Polyisocyanurate Rigid Foam Insulation Board Dose not get eaten by polyester fiberglass resin
When use poly you can use mat cost less then woven . less sand and fill
Will cure in the sun if you forgot catalyst.
you need to mark the foam to get an bite .I like holes any resin that runs down helps with sheer loads and more bite
Some are set that poly will eat all foam. Today had person wanting to fight over this.
With 4 finished trailers and 4 pods being built right in front him
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Il suffit de le faire
D.I.Y Light weight sleeper using D.I.Y rail top components.
viewtopic.php?f=50&t=66751
Build 4.5 by 8' using Trailtop fiberglass Components
http://tnttt.com/viewtopic.php?f=50&t=70729
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Re: poly resin dose not eat Polyisocyanurate Foam

Postby John61CT » Wed Aug 28, 2019 9:01 pm

Polystyrene does get dissolved by many polyester resins.

There are many different kinds though, so best advice is test compatibility with the specific materials you want to use.

Never mind arguments, just ignore the idjits and test for yourself.
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Re: poly resin dose not eat Polyisocyanurate Foam

Postby GPW » Thu Aug 29, 2019 5:10 am

Polyisocyanurate , not a foam we like using … Brittle , releases poisons when burned, not self healing … best used for insulation , not for a structure that must be somewhat flexible … Don’t trust me , try it yourself … ;)
There’s no place like Foam !
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Re: poly resin dose not eat Polyisocyanurate Foam

Postby saywhatthat » Thu Aug 29, 2019 12:20 pm

structure that must be somewhat flexible Had a trailer ass ended bent the light cargo door steel door frame in over 1 inch back to front The foam did have glass on two side. So it had to bow out. The only damage was at the very back where impact happen. Did not brake the foam. Foam lost bond with skin. Trailer stop car that hit it doing over 60. As the car went under the trailer bent tire rim frame fenders Yes Polystyrene does get dissolved by many polyester resins. not Polyisocyanurate May not be the best for PMF But if your building a FOAME with fiberglass skins. In picture don't see where it dissolved anything . Not say anything bad about PMF.
The combo of the two would do away with wood rot .Using glass around doors windows ,front bottom for rock hits
Yes Never mind arguments, just ignore the idjits and test for yourself. ;)

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Il suffit de le faire
D.I.Y Light weight sleeper using D.I.Y rail top components.
viewtopic.php?f=50&t=66751
Build 4.5 by 8' using Trailtop fiberglass Components
http://tnttt.com/viewtopic.php?f=50&t=70729
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saywhatthat
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Posts: 211
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Joined: Sat Jun 11, 2016 3:31 am
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