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Old Feb 07, 2007, 04:18 PM
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Derby, UK
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Question
What resin is suitable for ABS plastic?

I need to reinforce a pre-fitted deck joint, and was thinking of getting some resin that I can paint around the inside of the deck from the deck hatch.

I think I recently read something about not using certain types of resin with ABS, but can't find the recommendation from the forum search.

Thanks,
Pete.
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Old Feb 07, 2007, 04:19 PM
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use epoxy. its the best thing for the job, and it doesn't smell as bad as polyester. west system is the best, but expensive.
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Old Feb 07, 2007, 04:26 PM
Veni, Vidi, Feci
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nope! Not on a plastic ABS hull- epoxy might fool you into thinking it's sticking, but it's not!
I've found three materials that actually stick (fairly well) to ABS:

1. Pattex Stabilit Express- two part stuff (not an epoxy) that can cure in an airtight joint;

2. In the US, we have "PL Premium" polyurethane construction adhesive in caulking tubes... thick gooey stuff, adheres well to ABS, but needs to breathe to dry (good for fillets).

3. Milliput 2-part putty... not really a glue, but a filler which will stick to most plastics.

Pat M
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Old Feb 07, 2007, 04:28 PM
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melting?

I think I read about avoiding some types of resin because it got too hot during curing and melted ABS? Does anyone know what they were?

Also, I am very confused by the different types of "resin" available. Can someone knowledgeable give me a dummy's 30second guide to what they are?

Thanks,
Pete.
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Old Feb 07, 2007, 04:54 PM
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"Resin" is just about any prepolymer waiting to be crosslinked into a "Plastic". Think about wet spaghetti- it's almost liquid. Let it dry a bit, the noodles stick to one another at multiple sites, you get a rigid mass- "cross linking".

So, as many resins as there are plastics. Some cure with heat; others with another chemical, a catalyst.

Polyester is very common in fiberglass work, it's cured with a teeny bit of catalyst. Stinky stuff, less expensive.

Epoxy- typically uses a higher ratio of hardener- 1:5 to 1:1... more expensive, many different viscosities (thick glue to runny liquid).

And several types of resin designed for pouring into molds, to make "resin" or "polymer" castings.

All catalyzed/hardened resins give off heat when curing. Small thin layer, no issue; big blob (or a cup full)- lots of heat, could melt adjacent plastic if used that way (like pouring into hull bottom for some reason).

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Old Feb 07, 2007, 04:57 PM
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Thanks for the info!

Pete.
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