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epoxy in the cold
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winging it View Drop Down
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Posts: 3958 		Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Topic: epoxy in the cold
    Posted: 26 Oct 09 at 10:59am
I need to re tape and glue my Marauder.  I have nowhere warm to do the work.  Does this mean it is now too cold to do it this year?
the same, but different...

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alstorer View Drop Down
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Posts: 2899 		Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 09 at 11:08am
Ideally for standard marine resins you need to be at about 15°C or above. Below this the reaction really will proceed painfully slowly. It's not even a case of it needing to be above 15 just for the start- for thin applications like this the resin won't self heat, so needs kept warm all the way through its cure.
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Al
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JimC View Drop Down
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Posts: 6660 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 09 at 11:15am
Polythene sheeting tents and fan heaters... You do need to be indoors though or the wind will blow the warmth out.
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Granite View Drop Down
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Posts: 476 		Post Options Post Options   Quote Granite Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 09 at 12:39pm
Inspection lamps of the type with a lamp in a cage can be quite good for this.
If it doesn't break it's too heavy; if it does it wasn't built right
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Jamie600 View Drop Down
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Posts: 718 		Post Options Post Options   Quote Jamie600 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 09 at 7:54pm
Do you have patio doors? And an understanding other half? You can see where I'm going with this...
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laser193713 View Drop Down
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Posts: 889 		Post Options Post Options   Quote laser193713 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 09 at 4:08am
hire some heat lamps from a rental tool shop, works a treat, a few hours with a couple of them doing their stuff will sort it out!

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winging it View Drop Down
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Posts: 3958 		Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 09 at 3:48pm
Originally posted by Jamie600

Do you have patio doors? And an understanding other half? You can see where I'm going with this...


Believe me, this option crosses my mind very often, but my life would be forfeit...
the same, but different...

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Jamesd View Drop Down
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Posts: 377 		Post Options Post Options   Quote Jamesd Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 09 at 4:33pm
you can get epoxy resins that set at lower temperatures from SP or gurit or whatever they call themselves these days

i always use a shoe box with the ends knocked out to funnel hot air from a fan heater
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foaminatthedeck View Drop Down
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Posts: 318 		Post Options Post Options   Quote foaminatthedeck Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 09 at 6:53pm
Originally posted by Jamesd

you can get epoxy resins that set at lower temperatures from SP or gurit or whatever they call themselves these days

i always use a shoe box with the ends knocked out to funnel hot air from a fan heater


What are these resins? Last last time I spoke to Gurits technical department they would not recomend any resin properties following a cure below 15deg C.

Resins generaly provide very poor properties following low temp cures, they can appear to be 'hard' but will still not have the expected mechanical and chemical properties. OP if you want to produce a good quality job wait utill the tempriture rises other wise you may a well use a polyester and save your self money.

Mark
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