ASTM D1238-13
- Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
- standard by ASTM International, 08/01/2013
- Publisher: ASTM
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1.1 This test method covers the determination of the rate of extrusion of molten thermoplastic resins using an extrusion plastometer. After a specified preheating time, resin is extruded through a die with a specified length and orifice diameter under prescribed conditions of temperature, load, and piston position in the barrel. Four procedures are described. Comparable results have been obtained by these procedures in interlaboratory round-robin measurements of several materials and are described in Section 15.
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