Hello fellow Researchers,
I have question on which I can not find the answer.
Does anyone encounter the technology of thin polyurethane layer inner coating of steel pipes for gas transportation? I have been told that there are some applications of polyurethane coatings of the inside pipeline walls which has several advantages: a) it repairs the cracks (especially in older pipelines); b) it improves the gas flow...
According to my knowledge suchlayer is so rough that it has worse properties than pure metal (even corroded).
What are Your opinions on this "revelation"?
Best regards,
Stan
Hi Stan,
Yes. Such coating may have issues over time. However, I came across a chinese patent, which broadly discusses about PU layered pipelines.
https://www.google.co.in/patents/CN2536875Y
Regs,
Bala
Man, If not in the desert, pipelines are never straight. At least at any realistic scale ;-). So I guess, here: https://blogs.unimelb.edu.au/sciencecommunication/2013/09/27/smooth-vs-dimpled-balls/ you may find a hint, if not the answer.
And yes - polyurethanes can be self healing. Even a bit weird ones: https://www.nature.com/articles/pj201748. There is loads of of similar examples.
I have some doubts, however, regarding permeability of polyurethane coatings, but this is a topic for another story ;-)
cheers, Darz Bór ;-)
Your answer Adam was brilliant (as usual).
I found all info I needed. Thanx!
Darz Bóbr!
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