Expanding Photopolymer
Expanding Photopolymer
(OP)
Hello everyone,
I have already asked a couple of polymer experts about this and I didn't get an answer, but I have found time and again that if no one can help you, Eng Tips is the way to go :D
Anyway, I am in need of a UV curing photopolymer that expands during polymerization. Now ideally, I would like it to cure in near-UV wavelengths and double its volume. I know masterbond has some products that cure in 405 nm instead of the classic 365 but I am not aware of any polymer that expands during polymerization. However, it is also ok if the expansion is the product of bubble formation due to the release of a gas during polymerization.
Has anyone heard of anything similar to this?
Thanks in advance,
George
I have already asked a couple of polymer experts about this and I didn't get an answer, but I have found time and again that if no one can help you, Eng Tips is the way to go :D
Anyway, I am in need of a UV curing photopolymer that expands during polymerization. Now ideally, I would like it to cure in near-UV wavelengths and double its volume. I know masterbond has some products that cure in 405 nm instead of the classic 365 but I am not aware of any polymer that expands during polymerization. However, it is also ok if the expansion is the product of bubble formation due to the release of a gas during polymerization.
Has anyone heard of anything similar to this?
Thanks in advance,
George





RE: Expanding Photopolymer
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Expanding Photopolymer
Dr. Chris DeArmitt - FRSC
www.linkedin.com/in/chrisdearmitt/
RE: Expanding Photopolymer
Demon3, I was thinking about doing something like that. My thought was to mix some silver nitrate or some other substance that reacts when exposed to light and use it to create tiny bubbles in the polymer. Are you talking about something like that or did you have some other additive in mind?
Best,
George
RE: Expanding Photopolymer
Dr. Chris DeArmitt - FRSC
www.linkedin.com/in/chrisdearmitt/
RE: Expanding Photopolymer
Did you had any luck with the experiment?
RE: Expanding Photopolymer
No, I am afraid it didn't work. I did not try expancel microspheres as the temperatures were too high for my setup.
Best,
George
RE: Expanding Photopolymer
TTFN

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RE: Expanding Photopolymer
Dr.Demon is right about the contraction.
Be ware of the UV if it need to pass a layer of medium like glass or transparent plastics. The UV curing effect can drop a lot. We thought about similar stuff before but was not lucky . That was several years ago though as things may change. There was a Germany company (masterbond?) making various types UV curable plastics and will help R&D.
Best,