Temperature resistance of PVA wood glue

[VicS]

The current thread on sticking battens up to the deck head reminds me that some months ago when I suggested that foam backed vinyl lining material can be stuck to plywood panels using a water resistant PVA wood glue (It's suggested by Hawke House, its not my idea!) one or two forumites wondered if it was adequately temperature resistant or whether it would fail like some contact adhesives.

Well I stuck a couple of bits of ply together with it and put it on top of the central heating pump. It's been good and warm all winter and shows no sign of failure!

Next things to try are one of the modern "quick grab" adhesives such as "Sticks like wotsit" and also the hot melt glue gun glue.

 

[Spuddy]

I tried out veneering with pva ages ago by painting it on the back of sheet and on surface then ironing it on; it worked sort of but bond was patchy. Our thinking was that since pva is a thermoplastic it should go plastic at 160 C approx, I'd guess without looking it up. So without direct experience of deckhead application I'd say even Gulf of Aden environment would be OK.

 

[afp]

I used waterbased heavy duty flooring adhesive from our local DIY store to stick foam backed vinyl in the forward cabin - this is PVA based. It has been on for at least two years now.

Since RedBoat is Ferrari red, her hull gets very warm in the sun, you can certainly feel it on the inside despite the balsa core.

 

[nedmin]

Reminds me of a report I read about the Mosquito aircraft, it was built out of plywood and bonded using epoxy resin, when they took one to Egypt during 2nd world war, the wings sagged in the heat! They altered the adhesive and cured the prob.For the younguns among us it was one of the fastest aircraft in that war, powered by 2 R/Royce merlins.

 

[VicS]

I thought Aerolite glue was used but i did a Google on Aerolite and found an old thread about wood glues on here in which I reported
[ QUOTE ]
Resorcinol glues, which were invented by a Dr Yarstey, were used in the contruction of the WWII Mosquito fighter-bomber. 40 different versions were built between Sept 1941 and Feb 1951 when the last of 7781 was delivered. So resorcinol glue was around over 50 years ago but not generally available I guess. The Germans failed to produce a similar plywood 'plane because they did not have a good enough glue!

[/ QUOTE ]


I cannot remeber where I found that info. Maybe epoxies were developed and used later.

Found this about Mosquitos http://www.fleetairarmarchive.net/Aircraft/Mosquito.htm
and a whole load of links http://www.mossie.org/Mosquito_links.htm