Polyacrylate elastomers compounding

In an initial study, various antioxidants were evaluated in hydrogenated nitrile-butadiene rubber (HNBR), polyacrylic elastomer (ACM), and ethylene-acrylic elastomer (EAM), polymers which are frequently used in applications requiring high heat and oil resistance. Compounds of these elastomers were first immersed in ASTM 901 Oil to remove any soluble antioxidants that could be extracted in service, and later heat aged up to 21 days at 177°C in air. Similar agings were performed with samples placed in... 

If the compound can be attacked by water, for example polyacrylate and fluoroelastomer elastomer based compounds, the preforms are air cooled. 

The polyacrylate and ethylene-acrylic copolymers and one of the ethylene-propylene terpolymers (Nordel) were the best of the Intermediate temperature elastomers. Except for resistance to compression set, these materials were Inferior to the silicones in thermal stability as measured by their retention of tensile properties. The other EPDM compounds and butyl rubber were considerably inferior to the above-mentioned elastomers. It is not expected that the service life of the tested materials will be limited solely by their ability to resist hydrolytic degradation. The only caulking compositions which retained moderate physical integrity on thermal aging were the silicones. 

EPDM rubber Polystyrene Polyurethane elastomer, thermoplastic extruded pipe Polysulfone resin extruded profiles, doorframes Polyvinyl chloride, high-impact extruded profiles, fence posts Polyvinyl chloride, high-impact extruded profiles, furniture Polyvinyl chloride, high-impact extruded profiles, windows Polyvinyl chloride, high-impact extruded sheet Polysulfone resin extruded/molded goods Benzothiazyl disulfide extruding compounds Ammonium polyacrylate extrusion... 

Fig. 13 (a) Stracture of the polyacrylate-based side-chain LC compound, (b) Compaiisrai of the asymptotic diffraction intensity tails from the crosslinked elastomer circles slope —2.40) and the corresponding uncrosslinked homopolymta- triangles slope -1.85) [138]... 

The Handbook of Specialty Elastomers was conceived as a single reference source for the rubber compounder with some experience in designing parts in the rubber industry. The definition of specialty elastomers referenced in this publication is heat, oil, fuel, and solvent-resistant polymers that include polychloroprene (CR), nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), fluoroelastomer (FKM), polyacrylate (ACM), ethylene acrylic elastomer (AEM), polyepichlorohydrin (CO, ECO), chlorinated polyethylene (CPE), chlorosulfonated polyethylene (CSM), ethylene vinyl acetate (EAM), and thiokol (T). 

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