High-temperature oil-resistant specialty-type rubbers Polyacrylate elastomers(ACM) offer some unique physical characteristics that can solve difficult sealing containment and dampening problems

Polyacrylate elastomers(ACM)are classified by ASTM D2000 and SAEJ200 to be in the categories of DF,DH(150℃

capable),and EH(175℃ capable)and are considered to represent one of the specialty elastomer families.Figure

below is a graph that represents many common oil-and high-temperature-resistance polymers based upon the ASTM and SAE specification systems.ACM elastomers generally have higher heat resistance than HNBR and improved oil

resistance compared to ethylene acrylic polymers(AEM).

Advantages of Polyacrylate elastomers(ACM)

The specialty elastomer families are rubbery materials that offer some unique physical characteristics that can solve particularly difficult sealing,containment,dampening or environmental protection problems.Figure below

represents many key characteristics of the more common specialty elastomer families.

As previously discussed,polyacrylic elastomers are classified as high-temperature,oil-resistant,specialty-type rubbers.The chemical construction of ACM gives this material many useful and interesting properties,many of which are outlined as follows:

·Broad temperature range dependent upon the polymer grade:-40℃ to>175℃ continuous and>200℃ short-term heat exposure

• ·Excellent long-term high-temperature resistance obtainable with HT-ACM
• ·Excellent resistance to new semi-and fully synthetic engine oils
• ·Excellent resistance to petroleum-based lubricants and greases
• ·Excellent resistance to transmission fluids
• ·Resistance to aliphatic hydrocarbons
• ·Inherent ozone resistance
• ·Resistance to ultraviolet(UV)radiation
• ·Resistance to diesel and bio-diesel fuels