Is ABS resistant to OIL?
Is ABS resistant to OIL?
(OP)
We are molding an ABS flange and installing a stamped SS ring which is held on by two "ears" on either side of the flange. We have had a recent problem with the ears fracturing and want to eliminate the SS ring stamping oil as a suspect.
We have been unable to recreate the fracture problem by adjusting machine parameters, so we're looking for other ideas.
Any help or suggestions would be greatly appreciated!
We have been unable to recreate the fracture problem by adjusting machine parameters, so we're looking for other ideas.
Any help or suggestions would be greatly appreciated!






RE: Is ABS resistant to OIL?
See www.rtpcompany.com for a chart comparing chemical resistance for many thermoplastics.
RE: Is ABS resistant to OIL?
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RE: Is ABS resistant to OIL?
RE: Is ABS resistant to OIL?
RE: Is ABS resistant to OIL?
ASA is almost exactly like ABS chemically, are you sure you cannot use it? ABS is SAN (polystyrene-co-acrylonitile) plus butadiene rubber particles to give impact resistance. ASA is the same polymer but with polybutylacrylate rubber particles. That means they are really close in performance except for the better rubber and some ASA grades have high acrylonitrile content for better chemical resistance.
To answer your question, it only take a minute trace of oil to give the problem. It will be worse the more concentrated the stress is. Try to get an ABS with as high an acrylonitrile content as you can, that has a big effect on the chemical resistance of the ABS. Cheaper ABS has about 19% AN whereas 25% is common and you can get 30% I believe. Suppliers such as GE Plastics and BASF can advise.