Acrylate ACM Rubber 1640L 14.5Mpa Tensile Strength For O Ring And Gaskets

Also known as ACM rubbers or Polyacrylic Rubber, Polyacrylic elastomers are synthetic elastomers made from acrylic monomers. These polymers are typically produced through emulsion or suspension polymerization, with the primary repeat units being ethyl and butyl acrylate or a combination of both. The inclusion of various other monomers allows for considerable variation in the elastomers' thermophysical and mechanical properties. A common addition is 5 percent 2-chloroethyl vinyl ether.

The presence of a saturated backbone and polar side groups give these polymers exceptional resistance to heat, oxidation, and hydraulic oils. ACMs also demonstrate superior resistance to ozone and weathering compared to nitrile rubber. However, they have poor resistance to water and moisture, as well as to acids and alkalis. Low temperature applications are generally limited to approximately -10°C due to their low cold temperature flexibility and compression set.

To enhance the properties of ACMs, different copolymer modifications have been developed. These include the use of other backbone monomers and the addition of reactive site groups (1-5%) for subsequent crosslinking.

FEATURES

In addition to the aforementioned qualities, polyacrylic elastomers or ACM rubbers are also known for their excellent tensile strength and elongation capabilities. This makes them highly resilient and durable for a variety of applications. Their superior oil and heat resistance properties make them an ideal material for seals and gaskets used in heavy-duty applications.

Moreover, their resistance to aging and weathering adds to their longevity, making them a cost-effective choice for many industries. Their ability to withstand exposure to a wide range of temperatures without losing their mechanical properties also sets them apart.

However, it should be noted that while they offer excellent resistance to petroleum oils and gases, they fall short in terms of resistance to brake fluids, and certain types of fuels and coolants. They're also not suitable for applications with exposure to strong acids, ketones, and esters.

Finally, ACMs can be compounded for good resistance to compression set, a key property for sealing applications. Their versatility and adaptability, thanks to the numerous copolymer modifications available, make them a popular choice across various industries.

APPLICATIONS

ACM elastomers are mainly applied when resistance to heat and oils is essential. They often provide a more economical option compared to higher-priced heat-resistant elastomers like FKM, VMQ, and FVMQ, especially for applications involving high temperatures (below 150 °C).

These elastomers find regular use in automotive transmission components, such as seals and hoses, which need to endure hot oil, fuel, and a variety of automotive lubricants and hydraulic fluids. ACM elastomers' superb resilience makes them ideal for vibration damping. Additionally, they are utilized in textiles, adhesives, and coatings.

Typically, ACM elastomers operate continuously in a temperature range of -10°C to 150°C, and can tolerate temperatures as high as 175°C for brief periods.