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Bonding Polypropylene to CPE (Chlorinated Polyethylene)

Bonding Polypropylene to CPE (Chlorinated Polyethylene)

Bonding Polypropylene to CPE (Chlorinated Polyethylene)

I am trying to bond a Polypropylene honeycomb to a Chlorinated  Polyethylene sheet that has a non-woven polyester laminated to it. I have tried using 3M's Scotch Weld DP-8005, but with limited success. It sticks, but peels quite easily. I am working with some hot-melt companies, but I would prefer an adhesive that sets up a little more rigid than hot melt. There is going to be some compression on top of this substrate, and I am concerned with the movement of hot melt in between these two materials.
Any suggestions or ideas would be greatly appreciated.

Thanks in advance.


RE: Bonding Polypropylene to CPE (Chlorinated Polyethylene)

You are working with low surface energy materials. You must prepare the substrates by raising the surface energy with a primer. Then you may find a cyanoacrylate will work depending upon the stresses, heat and chemical exposure.

Bear in mind, when using a polyolefin primer, the surface energy will only be raised for a window of time---usually around 20 minutes. After that time, the surface energy will dissipate.  

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