1、September 2017 English price group 16No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.080.20!%muh“2748269www.din.
2、deDIN EN ISO 294-1Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens (ISO 2941:2017);English version EN ISO 2941:2017,English translation of DIN EN ISO 294-1:2017-09Kunststoffe Spritzgieen von Probe
3、krpern aus Thermoplasten Teil 1: Allgemeine Grundlagen und Herstellung von Vielzweckprobekrpern und Stben (ISO 2941:2017);Englische Fassung EN ISO 2941:2017,Englische bersetzung von DIN EN ISO 294-1:2017-09Plastiques Moulage par injection des prouvettes de matriaux thermoplastiques Partie 1: Princip
4、es gnraux, et moulage des prouvettes usages multiples et des barreaux (ISO 2941:2017);Version anglaise EN ISO 2941:2017,Traduction anglaise de DIN EN ISO 294-1:2017-09SupersedesDIN EN ISO 2941:199810www.beuth.deDocument comprises 38 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the Germa
5、n-language original shall be considered authoritative.08.17 DIN EN ISO 294-1:2017-09 2 A comma is used as the decimal marker. National 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 “Plasti
6、cs” (Secretariat: NBN, Belgium). The responsible German body involved in its preparation was the DIN-Normenausschuss Kunststoffe (DIN Standards Committee Plastics), Working Committee NA 054-01-02 AA “Mechanical properties and preparation of test specimens”. The DIN Standards corresponding to the Int
7、ernational Standards referred to in this document are as follows: ISO 179-1 DIN EN ISO 179-1 ISO 294-2 DIN EN ISO 294-2 ISO 294-3:2002 DIN EN ISO 294-3:2003-12 ISO 294-4 DIN EN ISO 294-4 ISO 294-5 DIN EN ISO 294-5 ISO 10350-1 DIN EN ISO 10350-1 ISO 10350-2 DIN EN ISO 10350-2 ISO 11403-1 DIN EN ISO 1
8、1403-1 ISO 11403-2 DIN EN ISO 11403-2 ISO 11403-3 DIN EN ISO 11403-3 ISO 20753 DIN EN ISO 20753 Amendments This standard differs from DIN EN ISO 294-1:1998-10 as follows: a) normative references have been updated; b) types of test specimens have been introduced according to ISO 20753; c) Clause 3 “T
9、erms and definitions” has been revised; d) Figure 1 has been revised; e) Clause 4 “Apparatus” has been revised and extended; f) Clause 5 “Procedure” has been revised and extended; g) Annex D “Methods for setting the injection moulding parameters” has been included; h) the former Annex D is now Annex
10、 E; i) the standard has been editorially revised. Previous editions DIN 16770: 1972-09 DIN 16770-2: 1986-05 DIN EN ISO 294-1: 1998-10 DIN EN ISO 294-1:2017-09 3 National Annex NA (informative) Bibliography DIN EN ISO 179-1, Plastics Determination of Charpy impact properties Part 1: Non-instrumented
11、impact test DIN EN ISO 294-2, Plastics Injection moulding of test specimens of thermoplastic materials Part 2: Small tensile bars DIN EN ISO 294-3:2003-12, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates (ISO 294-3:2002) DIN EN ISO 294-4, Plastics Inject
12、ion moulding of test specimens of thermoplastic materials Part 4: Determination of moulding shrinkage DIN EN ISO 294-5, Plastics Injection moulding of test specimens of thermoplastic materials Part 5: Preparation of standard specimens for investigating anisotropy DIN EN ISO 10350-1, Plastics Acquisi
13、tion and presentation of comparable single-point data Part 1: Moulding materials DIN EN ISO 10350-2, Plastics Acquisition and presentation of comparable single-point data Part 2: Long-fibre-reinforced plastics DIN EN ISO 11403-1, Plastics Acquisition and presentation of comparable multipoint data Pa
14、rt 1: Mechanical properties DIN EN ISO 11403-2, Plastics Acquisition and presentation of comparable multipoint data Part 2: Thermal and processing properties DIN EN ISO 11403-3, Plastics Acquisition and presentation of comparable multipoint data Part 3: Environmental influences on properties DIN EN
15、ISO 20753, Plastics Test specimens DIN EN ISO 294-1:2017-09 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE 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
16、 - Part 1: General principles, and moulding of multipurpose and bar test specimens(ISO 294-1:2017) Plastiques - Moulage par injection des prouvettes de matriaux thermoplastiques - Partie 1: Principes gnraux, et moulage des prouvettes usages multiples et des barreaux (ISO 294-1:2017) Kunststoffe - Sp
17、ritzgieen von Probekrpern aus Thermoplasten - Teil 1: Allgemeine Grundlagen und Herstellung von Vielzweckprobekrpern und 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 c
18、onditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and 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 ex
19、ists in three official versions (English, French, German). A version in any other language made by translation under the 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 s
20、tandards bodies of Austria, 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, S
21、lovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN 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 m
22、eans reserved worldwide for CEN national Members. Ref. No. EN ISO 294-1:2017 EEuropean foreword .3Introduction 51 Scope . 62 Normative references 63 Terms and definitions . 64 Apparatus 114.1 Moulds . 114.1.1 ISO (multi-cavity) moulds . 114.1.2 Single-cavity moulds 144.2 Injection-moulding machine 1
23、54.2.1 General. 154.2.2 Moulding volume 154.2.3 Control system 154.2.4 Screw . 154.2.5 Clamping force 164.2.6 Thermometers 165 Procedure165.1 Conditioning of material 165.2 Injection moulding 175.3 Measurement of mould temperature 185.4 Measurement of the melt temperature . 185.5 Post-moulding treat
24、ment of test specimens. 186 Report on test-specimen preparation .18Annex A (informative) Examples of runner configurations .20Annex B (informative) Standardized injection-moulding mould components .21Annex C (informative) Example of an injection mould .22Annex D (informative) Methods for setting the
25、 injection moulding parameters .23Annex E (informative) Methods of determining the hold pressure and hold time 28Bibliography .34Contents PageDIN EN ISO 294-1:2017-09 EN ISO 294-1:2017 (E) 2Foreword . 4European foreword This document (EN ISO 294-1:2017) has been prepared by Technical Committee ISO/T
26、C 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 by publication of an identical text or by endorsement, at the latest by December 2017, and conflict
27、ing 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/or CENELEC shall not be held responsible for identifying any or all such patent rights. This documen
28、t 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, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Re
29、public 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 the United Kingdom. Endorsement notice The text of ISO 294-1:2017 h
30、as been approved by CEN as EN ISO 294-1:2017 without any modification. DIN EN ISO 294-1:2017-09 EN ISO 294-1:2017 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Sta
31、ndards 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, also
32、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 1. In
33、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 elemen
34、ts 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 received
35、(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 assessment, as w
36、ell 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 material
37、s.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 parameters on in
38、jection 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.DIN EN ISO 294-1:2017-09 EN ISO 294-1:2017 (E) 4 IntroductionMan
39、y factors in the injection-moulding process influence the properties of moulded test specimens and hence the 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 pre
40、pare the specimens. Exact definition of each of the main parameters of the moulding process is a basic requirement 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
41、. 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”) stresse
42、s in the moulded test specimens and thermal degradation of the polymer during moulding also influence properties. Each of these phenomena must be controlled to minimize variability of the numerical values of the properties measured.Care has been taken to ensure that the ISO moulds described can all
43、be fitted in existing injection-moulding equipment and have interchangeable cavity plates.DIN EN ISO 294-1:2017-09 EN ISO 294-1:2017 (E) 5 1 ScopeThis document specifies the general principles to be followed when injection moulding test specimens of thermoplastic materials and gives details of mould
44、 designs for preparing two types of specimen for use in acquiring reference data, i.e. type A1 and type B1 test specimens as specified in ISO 20753, and provides a basis for establishing reproducible moulding conditions. Its purpose is to provide consistent descriptions of the main parameters of the
45、 moulding process and to establish a uniform practice in reporting moulding conditions. The particular conditions required for the reproducible preparation of test specimens will vary for each material used and are given in the International Standard for the relevant material or are to be agreed upo
46、n between the interested parties.NOTE Interlaboratory tests with acrylonitrile/butadiene/styrene (ABS), styrene/butadiene (SB) and poly(methyl methacrylate) (PMMA) have shown that mould design is an important factor in the reproducible preparation of test specimens.2 Normative referencesThe followin
47、g documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 179-1,
48、 Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact testISO 294-2, Plastics Injection moulding of test specimens of thermoplastic materials Part 2: Small tensile barsISO 294-3:2002, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small platesISO 294-4, Plastics Injection moulding of test specimens of thermoplastic materials Part 4: Determination of moulding shrinkageISO 20753, Plastics Test specime
