Polyester PE Elastomer

This elastomer combines the characteristics of thermoplastics and elastomers. It is structurally strong, resilient, and resistant to impact and flexural 

Polyester rubbers possess excellent resistance to ozone. When formulated with appropriate additives, their resistance to sunlight aging is very good. Resistance to general weathering is good. 

In general, the fluid resistance of polyester rubbers increases with increasing hardness. Since these rubbers contain no plasticizers, they are not susceptible to the solvent extraction or heat volatilization of such additives. Many fluids and chemicals will extract plasticizers from elastomers, causing a significant increase in stiffness (modulus) and volume shrinkage. 

Overall, PE elastomers are resistant to the same classes of chemicals and fluids as pol5mrethanes are. However, PE has better high-temperature properties than polyurethanes and can be used satisfactorily at higher temperatures in the same fluids. 

Polyester elastomers have excellent resistance to nonpolar materials such as oils and hydraulic fluids, even at elevated temperatures. At room temperature, elastomers are resistant to most polar fluids such as acids, base, amines, and glycols. Resistance is very poor at temperatures of 158°F (70°C) or above. These rubbers should not be used in applications requiring continuous exposure to polar fluids at elevated temperatures. 

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Polyester (PE) elastomer combines characteristics of thermoplastics and elastomers. They have excellent resistance to ozone and good resistance to general weathering. However, the polyester rubbers do not have satisfactory resistance to sunlight-induced aging unless they are formulated with appropriate additives. 

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