swelling of polypropylene or polycarbonate
swelling of polypropylene or polycarbonate
(OP)
Thanks in advance, I'll try not to sound too stupid.
In past projects I've used heptane to swell silicone tubing before inserting the mating part. When the heptane evaporates the silicone shrinks again.
Does anyone know if there is a similar phenomenon for polycarbonate or polypropylene?
I have searched this forum, Googled, searched with GlobalSpec, gone through some books I have, etc. and found nothing on the subject.
If not, I'm looking at heating the outer part.
In past projects I've used heptane to swell silicone tubing before inserting the mating part. When the heptane evaporates the silicone shrinks again.
Does anyone know if there is a similar phenomenon for polycarbonate or polypropylene?
I have searched this forum, Googled, searched with GlobalSpec, gone through some books I have, etc. and found nothing on the subject.
If not, I'm looking at heating the outer part.





RE: swelling of polypropylene or polycarbonate
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RE: swelling of polypropylene or polycarbonate
RE: swelling of polypropylene or polycarbonate
PP will swell in some hydrocarbons, but the reactions both ways will be very slow and not likely practical. Heat will soften PP to the extent it might easily snap over then shrink on, but to much heat or stretch will result in a permanent distortion.
Warm one and freeze the other part is the best advice I have seen or can think of.
Regards
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