ASTM D1238 - 04
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
| Aviso: | Las normas ASTM en lectura se visualizan a través del área decliente. Los archivos no se pueden descargar |
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| Fecha edición: |
2004-03-01
Anulada
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| Fecha de anulación: | 2004-03-01 |
| Idiomas disponibles: | Inglés |
| Resumen: | |
| Keywords: | melt flow rate; melt index; volume flow rate |
| Scope: | 1.1 This test method covers measurement of the rate of extrusion of molten resins through a die of a specified length and diameter under prescribed conditions of temperature, load, and piston position in the barrel as the timed measurement is being made. 1.2 Procedure A is a manual cutoff operation based on time used for materials having flow rates that fall generally between 0.15 and 50 g/10 min. Procedure B is an automatically timed flow rate measurement used for materials having flows from 0.50 to 900 g/10 min. By both procedures, the piston travel is generally the same during the timed measurement; the piston foot is about 46 and 20.6 mm above the die. Comparable flow rates have been obtained by these procedures in interlaboratory round-robin measurements of several materials described in . Provision is made for calculation of melt volume-flow rate as well as melt mass-flow rate. Note 1—Round-robin testing indicates this test method may be suitable at flow rates up to 1500 g/10 min if the timing clock resolves the elapsed time to the nearest 0.01 s. Note 2—This test method and ISO 1133-1991 are technically equivalent. This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 5.7, 10.2.12, and 14.1.2. |
| ICS: | 83.080.20 - Materiales termoplásticos |
| CTN: | D20.30 - D20.30 |
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Otras Relaciones |
Es referenciada por F3508-21A Es referenciada por F2150-19 Es referenciada por F3123-22 Es referenciada por F0561-19 Es referenciada por D7238-20 Es referenciada por F2881_F2881M-21E01 Es referenciada por D6394-21A Es referenciada por D3159-22 Es referenciada por D5577-19 Es referenciada por F0755-19 Es referenciada por D2116-16R21 Es referenciada por D7082-21 Es referenciada por D6388-18 Es referenciada por F2619_F2619M-20 Es referenciada por D5990-20A Es referenciada por D3935-21 Es referenciada por D3307-21 Es referenciada por D6213-17 Es referenciada por F0997-18 Es referenciada por D4976-12AR20 |










