SANS 1133-2008 Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics《塑料 热塑体的熔体质量流速(MFR)及熔体体积流速(MVR)测定》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-19845-9 SANS 1133:2008Edition 2ISO 1133:2005Edition 4SOUTH AFRICAN NATIONAL STANDARD Plastics Determination of the melt mass-flow rate (MF

4、R) and the melt volume-flow rate (MVR) of thermoplastics This national standard is the identical implementation of ISO 1133:2005 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191

5、 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 1133:2008 Edition 2 ISO 1133:2005 Edition 4 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA SC 512

6、0.12L, Water and sanitation Equipment and systems Polypropylene pressure pipes, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in March 2008. This document supersedes SABS ISO 1133:1997 (edition 1). Reference

7、numberISO 1133:2005(E)ISO 2005INTERNATIONAL STANDARD ISO1133Fourth edition2005-06-01Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplasticsPlastiques Dtermination de lindice de fluidit chaud des thermoplastiques, en masse (MFR) et en volume (MVR)

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13、 Published in Switzerland ii ISO 2005 All rights reservedSANS 1133:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 1133:2005(E) ISO 2005 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms a

14、nd definitions. 2 4 Principle. 3 5 Apparatus 3 5.1 Extrusion plastometer 3 5.2 Accessory equipment. 6 6 Test sample . 7 6.1 Sample form 7 6.2 Conditioning 7 7 Temperature-calibration, cleaning and maintenance of the apparatus 7 7.1 Calibration of the temperature-control system . 7 7.2 Cleaning the a

15、pparatus 8 8 Procedure A: mass-measurement method 8 8.1 Selection of temperature and load 8 8.2 Cleaning. 8 8.3 Selection of sample mass and charging cylinder . 8 8.4 Measurements. 9 8.5 Expression of results . 10 9 Procedure B: displacement-measurement method 10 9.1 Selection of temperature and loa

16、d 10 9.2 Minimum piston displacement distance. 10 9.3 Timer 11 9.4 Preparation for the test 11 9.5 Measurements. 11 9.6 Expression of results . 11 10 Flow rate ratio (FRR). 12 11 Precision 12 12 Test report . 13 Annex A (normative) Test conditions for MFR and MVR determinations 14 Annex B (informati

17、ve) Conditions specified in International Standards for the determination of the melt flow rate of thermoplastic materials. 15 SANS 1133:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 1133:2005(E) iv ISO 2005 All rights reservedForew

18、ord ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a techni

19、cal committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of e

20、lectrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to

21、the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for i

22、dentifying any or all such patent rights. ISO 1133 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties. This fourth edition cancels and replaces the third edition (ISO 1133:1997), in which the clauses relating to temperature control have been revi

23、sed. In addition, the clarity of the text has been improved. SANS 1133:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO 1133:2005(E) ISO 2005 All rights reserved 1Plastics Determination of the melt mass-flow rate

24、 (MFR) and the melt volume-flow rate (MVR) of thermoplastics 1 Scope This International Standard 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. Procedur

25、e 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 International Standard. The test conditions normally used for thermoplastics are listed

26、in Annexes A and B. The MVR will be found particularly useful when comparing materials of different filler content and when comparing filled with unfilled thermoplastics. The MFR can be determined from MVR measurements provided the melt density at the test temperature and pressure is known. These me

27、thods are in principle also applicable to thermoplastics for which the rheological behaviour is affected during the measurement by phenomena such as hydrolysis, condensation or crosslinking, but only if the effect is limited in extent and only if the repeatability and reproducibility are within an a

28、cceptable range. For materials which show significantly affected rheological behaviour during testing, these methods are not appropriate. In such cases, the use of the viscosity number in dilute solution, determined in accordance with the relevant part of ISO 1628, is recommended for characterizatio

29、n purposes. NOTE The rates of shear in these methods are much smaller than those used under normal conditions of processing, and therefore data obtained by these methods for various thermoplastics may not always correlate with their behaviour during processing. Both methods are used primarily in qua

30、lity control. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1622-2,

31、Plastics Polystyrene (PS) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 1628 (all parts), Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers ISO 1872-2, Plastics Polyethylene (PE) moulding an

32、d extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 1873-2, Plastics Polypropylene (PP) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 2580-2, Plastics Acrylonitrile-butadiene-styrene (ABS) mouldi

33、ng and extrusion materials Part 2: Preparation of test specimens and determination of properties SANS 1133:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 1133:2005(E) 2 ISO 2005 All rights reservedISO 2897-2, Plastics Impact-resistan

34、t polystyrene (PS-I) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameters ISO 4613-2, Plastics Ethylene/vinyl acetate

35、 (E/VAC) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 4894-2, Plastics Styrene/acrylonitrile (SAN) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 6402-2, Plastics Acrylonitrile-s

36、tyrene-acrylate (ASA), acrylonitrile-(ethylene-propylene-diene)-styrene (AEPDS) and acrylonitrile-(chlorinated polyethylene)-styrene (ACS) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 6507-1, Metallic materials Vickers hardness test Part

37、1: Test method ISO 7391-2, Plastics Polycarbonate (PC) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 8257-2, Plastics Poly(methyl methacrylate) (PMMA) moulding and extrusion materials Part 2: Preparation of test specimens and determination

38、 of properties ISO 8986-2, Plastics Polybutene (PB) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 9988-2, Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 2: Preparation of test specimens and determination of propertie

39、s ISO 10366-2, Plastics Methyl methacrylate-acrylonitrile-butadiene-styrene (MABS) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties ISO 15494, Plastic piping systems for industrial applications Polybutene (PB), polyethylene (PE) and polypropylene

40、 (PP) Specifications for components and the system Metric series ISO 15876-3, Plastics piping systems for hot and cold water installations Polybutylene (PB) Part 3: Fittings 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 melt mass-flow rate M

41、FR rate of extrusion of a molten resin through a die of specified length and diameter under prescribed conditions of temperature, load and piston position in the barrel of an extrusion plastometer, the rate being determined as the mass extruded over a specified time NOTE The correct SI units are dec

42、igrams per minute (dg/min). However, grams per 10 minutes (g/10 min) have customarily been used in the past and are also acceptable. SANS 1133:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 1133:2005(E) ISO 2005 All rights reserved 3

43、3.2 melt volume-flow rate MVR rate of extrusion of a molten resin through a die of specified length and diameter under prescribed conditions of temperature, load and piston position in the barrel of an extrusion plastometer, the rate being determined as the volume extruded over a specified time NOTE

44、 The correct SI units are cubic decimetres per minute (dm3/min). More commonly used units, which are also acceptable, are cubic centimetres per 10 minutes (cm3/10 min). 3.3 load combined mass of piston and added weight, as specified by the conditions of the test NOTE It is expressed in kilograms (kg

45、). 4 Principle The melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) are determined by extruding molten material from the barrel of a plastometer under preset conditions of temperature and load. For melt mass-flow rate, timed segments of the extrudate are weighed and the extrudate rate i

46、s calculated in g/10 min and recorded. For melt volume-flow rate, the distance that the piston moves in a specified time or the time required for the piston to move a specified distance is measured to generate data in cm3/10 min. Melt volume-flow rate may be converted to melt mass-flow rate, or vice

47、-versa, if the density of the material is known under the conditions of the test. 5 Apparatus 5.1 Extrusion plastometer The basic apparatus comprises an extrusion plastometer operating at a fixed temperature. The general design is as shown in Figure 1. The thermoplastic material, which is contained

48、in a vertical cylinder, is extruded through a die by a piston loaded with a known weight. The apparatus consists of the following essential parts. 5.1.1 Cylinder, fixed in a vertical position (see 5.1.5). The cylinder shall be manufactured from a material resistant to wear and corrosion up to the ma

49、ximum temperature of the heating system, and the finish, properties and dimensions of its surface shall not be affected by the material being tested. For particular materials, measurements may be required at temperatures up to 450 C. The cylinder shall have a length between 115 mm and 180 mm and an internal diameter of 9,550 mm 0,025 mm. The base of the cylinder shall be thermally insulated in such a way that the area of exposed metal is less than 4 cm2, and it is rec