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Author Topic: Bonding plastics  (Read 1971 times)

Jonty

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Bonding plastics
« on: May 11, 2018, 06:51:15 pm »
  I have some Deans Marine micro rudders for an LCT I'm building. The hull is styrene, and the rudder posts appear to be a nylon-type red plastic. Polystyrene cement, Plastic Weld, and superglue don't work.

  I know I can phone Dean's in the morning, but any ideas right now?
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rnli12

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Re: Bonding plastics
« Reply #1 on: May 11, 2018, 06:57:28 pm »
2 part epoxy should be sufficient
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Regards,

Rich

Jonty

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Re: Bonding plastics
« Reply #2 on: May 11, 2018, 07:37:07 pm »
  That's the one I didn't try!
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I eat my peas with honey,
I've done it all my life;
It makes the peas taste funny,
But it keeps 'em on the knife.

rnli12

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Re: Bonding plastics
« Reply #3 on: May 12, 2018, 06:57:11 am »
I think its always worth a good epoxy in these areas like araldite or similar  :-))
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Regards,

Rich

Brian60

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Re: Bonding plastics
« Reply #4 on: May 12, 2018, 10:50:26 am »
If your 'red plastic' is Delrin ( due to your description like nylon) you will find nothing sticks to it. It has fantastic machining properties but nothing will bond to it. Industrial applications use microwave/ultrasound to weld pieces together ( generates heat which melts the parts together)
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CGAux26

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Re: Bonding plastics
« Reply #5 on: May 12, 2018, 05:42:30 pm »
I recently tested bonding PVC (pipe) to styrene. MEK & epoxy failed.  3M 5200, Gorilla Glue (white), and CA held.  A friend suggested PVC pipe cement, the purple stuff.  Have not tried it yet.


Let us know what works on your plastic.
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Hotglove

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Re: Bonding plastics
« Reply #6 on: June 04, 2018, 10:31:24 pm »
I have been very impressed with Soudal Fix-All, I have used it for Wood, plastic, metal, paper and fabric.
It is like silicon but has a lot of body, very light, fills large pockets without sagging, stays flexible and can bond wet surfaces.
Strange stuff to handle but very strong and effective.
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oldiron

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Re: Bonding plastics
« Reply #7 on: June 05, 2018, 03:12:38 am »
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