Improving Neoprene Compression Set
Improving Neoprene Compression Set
(OP)
Is there any way to improve the compression set of molded neoprene parts? Any production methods that will improve compression set? The samples for compression set testing are taken from the molded parts. The neoprene itself passes compression set testing when the testing is done on molded "buttons" as per the applicable ASTM testing procedure - but the neoprene fails when samples are taken from the production part.





RE: Improving Neoprene Compression Set
RE: Improving Neoprene Compression Set
If we post-cure at the temperature and time recommended by our Custom Mixer, will this adversly affect tensile and elongation properties? How about Shear Modulus?
Any help is appreciated.
RE: Improving Neoprene Compression Set
Be aware that post curing may change dimensions as well.
If you can't increase cure time/processing time or raise moulding temp slightly then you may want to ask the material supplier if they can speed the material up a bit.
Do you cut your product down for testing?
We use a splitting machne similar to the following (look up PMF fortuna splitting machines) quite expensive but excellent for cutting down rubber products for testing.