Cut composites
Cut composites
(OP)
Hello,
I have long fibre reinforced composites samples with 10 x 50 x 2 (mm).
Composites have a thermoplastic matrix and glass fibres.
I'm trying to cut those composites in smaller samples of 5 x 5 x 2 without change their morphology.
I tried to cut those with a saw but the result was not so good, then I try to cut with a surgical knife but it was to hard, the 3rd attempt was using the same surgical knife but heated, it was nice but probably changes the polymer's morphology, finally I mad just some superficial cuts I put the composites in liquid nitrogen and I try to break them but the result was not the best.
someone has a better idea?!
Thanks in advance!
Pedro
I have long fibre reinforced composites samples with 10 x 50 x 2 (mm).
Composites have a thermoplastic matrix and glass fibres.
I'm trying to cut those composites in smaller samples of 5 x 5 x 2 without change their morphology.
I tried to cut those with a saw but the result was not so good, then I try to cut with a surgical knife but it was to hard, the 3rd attempt was using the same surgical knife but heated, it was nice but probably changes the polymer's morphology, finally I mad just some superficial cuts I put the composites in liquid nitrogen and I try to break them but the result was not the best.
someone has a better idea?!
Thanks in advance!
Pedro





RE: Cut composites
A wood blade will cause splitering. You'll want to use a diamond blade, or a blade with cemented-carbides. The type of blade used to cut ceramics.
like this:
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RE: Cut composites
I'll try something similar but I'm afraid that this blade can "kill" my specimens... I tried a usual blade to cut metals...
If someone has more ideas, they will be welcome!
thanks,
RE: Cut composites
what type of saw/blade are you using? band saw? jig saw? table saw with circular blade? hacksaw?
what type of thermoplastic? melt temperature?
a diamond coated circular saw blade should work just fine. If is a low melting temp thermoplastic you might need to use coolant.
RE: Cut composites
Anyway thanks for your hint.
RE: Cut composites
Wes C.
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RE: Cut composites
RE: Cut composites
I'll follow your ideas...
Thanks for the others suggestions too,
Regards
Pedro