1、BRITISH STANDARD BS EN ISO 294-1:1998 BS 2782-9: Method 910B: 1997 Implementing Amendment No. 1 to BS 2782-9: Method 910B:1997 (renumbers the BS as BS EN ISO 294-1:1998) and incorporating Amendment No. 1 to BS EN ISO 294-1:1998 Plastics Injection moulding of test specimens of thermoplastic materials
2、 Part 1: General principles, and moulding of multipurpose and bar test specimens The European Standard EN ISO 294-1:1998, with the incorporation of amendment A1:2002, has the status of a British Standard ICS 83.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN ISO 29
3、4-1:1998 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 May 1997 BSI 30 April 2002 ISBN 0 580 27299 0 National foreword This British Standard is the
4、English language version of EN ISO 294-1:1998 Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens, including amendment A1:2002, published by the European Committee for Standardization (CEN). It is id
5、entical with ISO 294-1:1996, including amendment 1:2001, published by the International Organization for Standardization (ISO). The UK participation in the preparation of this British Standard was entrusted to Technical Committee PRI/21, Testing of plastics, which has the responsibility to: A list o
6、f organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International
7、Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Stan
8、dard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe
9、an developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 15 and a back cover. The BSI copyright notice displayed in this document indicat
10、es when the document was last issued. Sidelining in this document indicates the most recent changes by amendment. Amendments issued since publication Amd. No. Date Comments 10235 October 1998 Implementation of the European Standard 13128 30 April 2002 Indicated by a sidelineBS EN ISO 294-1:1998 BSI
11、30 April 2002 i Contents Page National foreword Inside front cover Foreword 2 Foreword iii Text of ISO 294-1 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 294-1 July 1998 + A1 March 2002 ICS 83.080.20 Descriptors: See ISO document English version Plastics Injection moulding of te
12、st specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens (includes amendment A1:2002) (ISO 294-1:1996 + A1:2001) Plastiques Moulage par injection des prouvettes de matriaux thermoplastiques Partie 1: Principes gnraux, et moulage des prou
13、vettes usages multiples et des barreaux (inclut lamendement A1:2002) (ISO 294-1:1996 + A1:2001) Kunststoffe Spritzgieen von Probekrpern aus Thermoplasten Teil 1: Allgemeine Grundlagen und Herstellung von Vielzweckprobekrpern und Stben (enthlt nderung A1:2002) (ISO 294-1:1996 + A1:2001) This European
14、 Standard was approved by CEN on 12 June 1998. Amendment A1 was approved by CEN on 5 January 2002. 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-t
15、o-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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
16、 the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem
17、bourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and b
18、y any means reserved worldwide for CEN national Members Ref. No. EN ISO 294-1:1998 + A1:2002 EEN ISO 294-1:1998 BSI 30 April 2002 2 Foreword The text of the International Standard from Technical Committee ISO/TC 61, Plastics, of the International Organization for Standardization (ISO) has been taken
19、 over as a European Standard by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is held by IBN. 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 January 1999, and conflicting nat
20、ional standards shall be withdrawn at the latest by January 1999. According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
21、 Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 294-1:1996 has been approved by CEN as a European Standard without any modification. NOTE Normative references to Inte
22、rnational Standards are listed in Annex ZA (normative). Foreword to amendment A1 The text of this amendment EN ISO 294-1:1998/ A1:2002 to the EN ISO 294-1:1998 from Technical Committee ISO/TC 61, Plastics, of the International Organization for Standardization (ISO) has been taken over as an amendmen
23、t to the European Standard by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is held by IBN. 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 September 2002, and conflicting nat
24、ional standards shall be withdrawn at the latest by September 2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, G
25、reece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the amendment to the International Standard ISO 294-1:1996/A1:2001 has been approved by CEN as an amendment to the European Standard without an
26、y modifications. Amendment 12001-01-15EN ISO 294-1:1998 ii BSI 30 April 2002 Contents Page Foreword iii Introduction 1 1S c o p e 1 2 Normative references 1 3 Definitions 2 4A p p a r a t u s 5 5 Procedure 10 6 Report on test-specimen preparation 11 Annex A (informative) Examples of runner configura
27、tions 12 Annex B (informative) Standardized injection-moulding mould components 13 Annex C (informative) Example of an injection mould 14 Annex ZA (normative) Normative references to international publications with their relevant European publications 15 Figure 1 Schematic diagram of an injection-mo
28、ulding cycle, showing the melt pressure (full line) and the longitudinal position of the screw (dashed line) as a function of time 3 Figure 2 Cavity plate for a type A ISO mould 6 Figure 3 Cavity plate for a type B ISO mould 7 Figure 4 Examples of single-cavity moulds 8 Figure 5 Example of a family
29、mould 9 Figure A.1 Different types of runner configuration 12 Figure C.1 Exploded view of an injection mould with an interchangeable two-cavity plate for a type A ISO mould 14EN ISO 294-1:1998 BSI 30 April 2002 iii Foreword ISO (the International Organization for Standardization) is a worldwide fede
30、ration 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 technical committee has been established has the right to be represented on that commi
31、ttee. 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 electrotechnical standardization. Draft International Standards adopted by the te
32、chnical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 294-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplast
33、ic materials. Together with the other parts, this part of ISO 294 cancels and replaces the second edition of ISO 294 (ISO 294:1995) which has been revised to improve the definition of the injection-moulding parameters and has been restructured to specify four types of ISO mould for the production of
34、 the basic specimen types required for the acquisition of comparable test data. Care has been taken to ensure that the ISO moulds described can all be fitted in existing injection-moulding equipment and have interchangeable cavity plates. ISO 294 consists of the following parts, under the general ti
35、tle Plastics Injection moulding of test specimens of thermoplastic materials: Part 1: General principles, and moulding of multipurpose and bar test specimens; Part 2: Small tensile bars; Part 3: Small plates; Part 4: Determination of moulding shrinkage. Annex A, Annex B and Annex C of this part of I
36、SO 294 are for information only. Descriptors: Plastics, thermoplastic resins, injection moulding, moulding materials, test specimens, bars (materials), specimen preparation, reference data, generalities.iv blankEN ISO 294-1:1998 BSI 30 April 2002 1 Introduction Many factors in the injection-moulding
37、 process may 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 in fact strongly dependent on the conditions of the moulding process used to prepare the specimens. Exa
38、ct 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. Thermoplastics may s
39、how differences in molecular orientation (important mainly with amorphous polymers), in crystallization morphology (for crystalline and semi-crystalline polymers), in phase morphology (for heterogeneous thermoplastics) as well as in the orientation of anisotropic fillers such as short fibres. Residu
40、al (“frozen-in”) stresses in the moulded test specimens and thermal degradation of the polymer during moulding may also influence properties. Each of these phenomena must be controlled to avoid fluctuation of the numerical values of the properties measured. 1 Scope This part of ISO 294 specifies the
41、 general principles to be followed when injection moulding test specimens of thermoplastic materials and gives details of mould designs for preparing two types of specimen for use in acquiring reference data, i.e. multipurpose test specimens as specified in ISO 3167 and 80 mm 10 mm 4 mm bars. It pro
42、vides a basis for establishing reproducible moulding conditions. Its purpose is to promote uniformity in describing the main parameters of the moulding process and also to establish uniform practice in reporting moulding conditions. The particular conditions required for the reproducible preparation
43、 of test specimens which will give comparable results will vary for each material used. These conditions are given in the International Standard for the relevant material or are to be agreed upon between the interested parties. NOTE ISO round-robin tests with acrylonitrile/butadiene/styrene (ABS), s
44、tyrene/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 references The following standards contain provisions which, through reference in this text, constitute provisions of this par
45、t of ISO 294. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 294 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of
46、IEC and ISO maintain registers of currently valid International Standards. ISO 179:1993, Plastics Determination of Charpy impact strength. ISO 294-2:1996, Plastics Injection moulding of test specimens of thermoplastic materials Part 2: Small tensile bars. ISO 294-3:1996, Plastics Injection moulding
47、of test specimens of thermoplastic materials Part 3: Small plates. ISO 294-4:Plastics Injection moulding of test specimens of thermoplastic materials Part 4: Determination of moulding shrinkage. 1) ISO 3167:1993, Plastics Multipurpose test specimens. ISO 10350:1993, Plastics Acquisition and presenta
48、tion of comparable single-point data. ISO 11403-1:1994, Plastics Acquisition and presentation of comparable multipoint data Part 1: Mechanical properties. ISO 11403-2:1995, Plastics Acquisition and presentation of comparable multipoint data Part 2: Thermal and processing properties. ISO 11403-3:, Pl
49、astics Acquisition and presentation of comparable multipoint data Part 3: Environmental influences on properties. 2) 1) To be published. (Revision in part of ISO 294:1995) 2) To be published.EN ISO 294-1:1998 2 BSI 30 April 2002 3 Definitions For the purposes of the various parts of ISO 294, the following definitions apply. 3.1 mould temperature, T C the average temperature of the mould cavity surfaces measured after the system has att
