ISO 1133:1997 PDF

Scope: 1.1 This International Standard specifies a method for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this International Standard. The test conditions normally used for thermoplastics are listed in. annexes A and B. The melt volume-flow rate will normally be found useful when comparing filled and unfilled thermoplastics. The melt flow rate can now be determined by automatic measurement provided the melt density at the test temperature is known. This method is not applicable to thermoplastics for which the theological behaviour is affected by phenomena such as hydrolysis, condensation or crosslinking. 1.2 The melt mass-flow rate and melt volume-flow rate of thermoplastics are dependent on the rate of shear. The tates of shear in this test are much smaller than those used under normal conditions of fabrication, and therefore data obtained by this method for various thermoplastics may not always correlate with their behaviour in actual use. Both methods are useful in quality control.

ISO 1133:1997 history

2006 ISO 1133:2005/Cor 1:2006 Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics; Technical Corrigendum 1
2005 ISO 1133:2005 Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
1997 ISO 1133:1997 Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
1991 ISO 1133:1991 Plastics; determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
1981 ISO 1133:1981 Plastics — Determination of the melt flow rate of thermoplastics