ERJ staff report (DS)
West Consohocken, Pennsylvania --ASTM has issued a new International standard on ways to test production lots of thermoplastic elastomers in order to quantify and predict how well they process and what ultimate physical properties will be imparted to final moulded or extruded products.
The standard, ASTM D7605, Test Method for Thermoplastic Elastomers - Measurement of Polymer Melt Rheological Properties and Congealed Dynamic Properties Using Rotorless Shear Rheometers, was developed by Subcommittee D11.12 on Processability Tests, part of ASTM International Committee D11 on Rubber.
According to John Dick, senior engineer, applications, Alpha Technologies and a D11 member, the new standard will quantify lot- to-lot variations in the plant receiving area that relate to quality variations.
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