1、Plastics Injection moulding of test specimens of thermoplastic materialsPart 1: General principles, and moulding of multipurpose and bar test specimensBS EN ISO 294-1:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR
2、M EN ISO 294-1 June 2017 ICS 83.080.20 Supersedes EN ISO 294-1:1998English Version Plastics - Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens (ISO 294-1:2017) Plastiques - Moulage par injection des prou
3、vettes de matriaux thermoplastiques - Partie 1: Principes gnraux, et moulage des prouvettes usages multiples et des barreaux (ISO 294-1:2017) Kunststoffe - Spritzgieen von Probekrpern aus Thermoplasten - Teil 1: Allgemeine Grundlagen und Herstellung von Vielzweckprobekrpern und Stben (ISO 294-1:2017
4、) This European Standard was approved by CEN on 13 April 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical ref
5、erences concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a C
6、EN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon
7、ia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIO
8、N EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 294-1:2017 ENational forewordThis British Standard is the UK implementation
9、of EN ISO 294-1:2017. It is identical to ISO 294-1:2017. It supersedes BS EN ISO 294-1:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/82, Thermoplastic materials.A list of organizations represented on this committee can be obtained on request
10、 to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 87569 4ICS 83.080.20Compliance with a British Sta
11、ndard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 294-1:2017EUROPEAN STANDARD NORME EUR
12、OPENNE EUROPISCHE NORM EN ISO 294-1 June 2017 ICS 83.080.20 Supersedes EN ISO 294-1:1998English Version Plastics - Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens (ISO 294-1:2017) Plastiques - Moulage p
13、ar injection des prouvettes de matriaux thermoplastiques - Partie 1: Principes gnraux, et moulage des prouvettes usages multiples et des barreaux (ISO 294-1:2017) Kunststoffe - Spritzgieen von Probekrpern aus Thermoplasten - Teil 1: Allgemeine Grundlagen und Herstellung von Vielzweckprobekrpern und
14、Stben (ISO 294-1:2017) This European Standard was approved by CEN on 13 April 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists an
15、d bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the
16、responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugosla
17、v Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EU
18、ROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 294-1:2017 EBS EN ISO 294-1:2017EN ISO 294-1:2017 (E) 2
19、 European foreword This document (EN ISO 294-1:2017) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either
20、by publication of an identical text or by endorsement, at the latest by December 2017, and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/o
21、r CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 294-1:1998. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria
22、, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain,
23、Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 294-1:2017 has been approved by CEN as EN ISO 294-1:2017 without any modification. ISO 294-1:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Apparatus . 64.1 Moulds
24、64.1.1 ISO (multi-cavity) moulds 64.1.2 Single-cavity moulds. 94.2 Injection-moulding machine 104.2.1 General. 104.2.2 Moulding volume 104.2.3 Control system 104.2.4 Screw . 104.2.5 Clamping force 114.2.6 Thermometers 115 Procedure115.1 Conditioning of material 115.2 Injection moulding 125.3 Measure
25、ment of mould temperature 135.4 Measurement of the melt temperature . 135.5 Post-moulding treatment of test specimens. 136 Report on test-specimen preparation .13Annex A (informative) Examples of runner configurations .15Annex B (informative) Standardized injection-moulding mould components .16Annex
26、 C (informative) Example of an injection mould .17Annex D (informative) Methods for setting the injection moulding parameters .18Annex E (informative) Methods of determining the hold pressure and hold time 23Bibliography .29 ISO 2017 All rights reserved iiiContents PageBS EN ISO 294-1:2017ISO 294-1:
27、2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Apparatus . 64.1 Moulds 64.1.1 ISO (multi-cavity) moulds 64.1.2 Single-cavity moulds. 94.2 Injection-moulding machine 104.2.1 General. 104.2.2 Moulding volume 104.2.3 Control system 104.2.4 Screw . 104.2.
28、5 Clamping force 114.2.6 Thermometers 115 Procedure115.1 Conditioning of material 115.2 Injection moulding 125.3 Measurement of mould temperature 135.4 Measurement of the melt temperature . 135.5 Post-moulding treatment of test specimens. 136 Report on test-specimen preparation .13Annex A (informati
29、ve) Examples of runner configurations .15Annex B (informative) Standardized injection-moulding mould components .16Annex C (informative) Example of an injection mould .17Annex D (informative) Methods for setting the injection moulding parameters .18Annex E (informative) Methods of determining the ho
30、ld pressure and hold time 23Bibliography .29 ISO 2017 All rights reserved iiiContents PageBS EN ISO 294-1:2017ISO 294-1:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internatio
31、nal Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO
32、, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part
33、 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the
34、 elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations re
35、ceived (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessmen
36、t, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic m
37、aterials.This second edition cancels and replaces the first edition (ISO 294-1:1996), which has been technically revised with the following changes: the types of test specimen have been replaced according to ISO 20753; Annex D has been added to clarify the methods for setting the operation parameter
38、s on injection machine; the original Annex D has been renamed as Annex E.It also incorporates the Amendments ISO 294-1:1996/Amd.1:2001 and ISO 294-1:1996/Amd.2:2005.A list of all the parts in the ISO 294 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 294-1:2017ISO 29
39、4-1:2017(E)ForewordISO (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
40、 which a technical 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 a
41、ll matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. T
42、his document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).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 identifying an
43、y or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of
44、 users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Bar
45、riers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials.This second edition cancels and replaces the first edition (ISO 294-1:1996), which has been technically rev
46、ised with the following changes: the types of test specimen have been replaced according to ISO 20753; Annex D has been added to clarify the methods for setting the operation parameters on injection machine; the original Annex D has been renamed as Annex E.It also incorporates the Amendments ISO 294
47、-1:1996/Amd.1:2001 and ISO 294-1:1996/Amd.2:2005.A list of all the parts in the ISO 294 series can be found on the ISO website.iv ISO 2017 All rights reserved ISO 294-1:2017(E)IntroductionMany factors in the injection-moulding process influence the properties of moulded test specimens and hence the
48、measured values obtained when the specimens are used in a test method. The mechanical properties of such specimens are strongly dependent on the conditions of the moulding process used to prepare the specimens. Exact definition of each of the main parameters of the moulding process is a basic requir
49、ement for reproducible and comparable operating conditions.It is important in defining moulding conditions to consider any influence the conditions may have on the properties to be determined. Thermoplastics exhibit differences in molecular orientation in crystallization morphology (for crystalline and semicrystalline polymers), in phase morphology (for heterogeneous thermoplastics) as well as in the orientation of anisotropic fillers such as short fibres. Residual (“frozen-in”) stresses in the moulded test specimens and therma
