ISO 1133-1:2022

مواصفة قياسية دولية   الإصدار الحالي
اعتمدت بتاريخ  23 يونيو 2022

Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics — Part 1: Standard method

ملفات الوثيقة ISO 1133-1:2022

null صفحات
الإصدار الحالي

مجال الوثيقة ISO 1133-1:2022

This document specifies two procedures 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. Procedure A is a mass-measurement method. Procedure B is a displacement-measurement method. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this document. The test conditions normally used for thermoplastics are listed in Annex A.

The MVR is particularly useful when comparing materials of different filler content and when comparing filled with unfilled thermoplastics. The MFR can be determined from MVR measurements, or vice versa, provided the melt density at the test temperature is known.

This document is also possibly applicable to thermoplastics for which the rheological behaviour is affected during the measurement by phenomena such as hydrolysis (chain scission), condensation and cross-linking, but only if the effect is limited in extent and only if the repeatability and reproducibility are within an acceptable range. For materials which show significantly affected rheological behaviour during testing, this document is not appropriate. In such cases, ISO 1133-2 applies.

NOTE      The rates of shear in these methods are much smaller than those used under normal conditions of processing, and therefore it is possible that data obtained by these methods for various thermoplastics will not always correlate with their behaviour during processing. Both methods are used primarily in quality control.

الأكثر مبيعاً

GSO 150-2:2013
 
مواصفة قياسية خليجية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية
BH GSO 150-2:2015
GSO 150-2:2013 
مواصفة قياسية بحرينية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية
BH GSO 150-1:2015
GSO 150-1:2013 
لائحة فنية بحرينية
فترات صلاحية المنتجات الغذائية - الجزء الأول : فترات الصلاحية الإلزامية
GSO 150-1:2013
 
لائحة فنية خليجية
فترات صلاحية المنتجات الغذائية - الجزء الأول : فترات الصلاحية الإلزامية

اعتمدت مؤخراً

ISO 37170:2022
 
مواصفة قياسية دولية
Smart community infrastructures — Data framework for infrastructure governance based on digital technology in smart cities
ISO 19609-4:2022
 
مواصفة قياسية دولية
Traditional Chinese medicine — Quality and safety of raw materials and finished products made with raw materials — Part 4: Testing for preservatives and unwanted compounds
ISO 9455-1:2022
 
مواصفة قياسية دولية
Soft soldering fluxes — Test methods — Part 1: Determination of non-volatile matter, gravimetric method
ISO 20399:2022
 
مواصفة قياسية دولية
Biotechnology — Ancillary materials present during the production of cellular therapeutic products and gene therapy products