The effect was examined of a physiological fluid on the long-term strength of P-12 polyamide CTD copolymer, fluorinated polymethylmethacrylate PMMAF and cast polyethylene terephthalate (PETP). It has been found that the durability curves for the thermoplastics in air and the physiological fluid are described by an exponential function which has an aberration in the region of low stresses.
Polyethylene Polymethylmethacrylate Exponential Function Terephthalate PETP
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