Elaine Harmon wrote: > > On Sat, 10 Jul 1999, Peter Osman wrote: > > > Don't know if its been suggested yet but I was told that the glue used by > > plumbers for PVC pipe should work on polythene - haven't tried it myself - > > probably wise to try it on scrap polythene first. > > Hmm. If you've ever used the stuff on PVC you'll know that it reacts with > and softens the plastic. I wouldn't put it on MY boat. The odor of the PVC glue includes the odor of MEK, so I think it has some in it. The glue works in PVC by dissolving a little of the surface of the PVC. When the solvents evaporate, the PVC resolidifies. That's why the joints can withstand the pressure of a household water system. Not to worry about your water pipes turning to jelly! I suspect the PVC glue does NOT dissolve the polyethylene in rotomolded sea kayaks. Any bond it makes must depend on a mechanical adhesion, thus the need to scruff the surface of the polyethylene with 80 grit sandpaper. No need to worry about your polyethylene boat becoming a liquid, because PVC and polyethylene have different dissolving properties. -- Dave Kruger Astoria, OR sea kayaker chemist *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Jul 09 1999 - 21:12:04 PDT
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