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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 LAW Licensed Co
3、py: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 294-1:1998 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 int
4、o effect on 15 May 1997 BSI 30 April 2002 ISBN 0 580 27299 0 National foreword This British Standard is the 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 spe
5、cimens, including amendment A1:2002, published by the European Committee for Standardization (CEN). It is identical 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
6、 was entrusted to Technical Committee PRI/21, Testing of plastics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referre
7、d to in this document may be found in the BSI Standards Catalogue under the section entitled “International 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 contra
8、ct. Users of British Standards are responsible for their correct application. Compliance with a British Standard 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 interpret
9、ation, or proposals for change, and keep the UK interests informed; monitor related international and European 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,
10、 pages ii to iv, pages 1 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment. Amendments issued since publication Amd. No.DateComments 10235October 1998Impl
11、ementation of the European Standard 1312830 April 2002Indicated by a sideline Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 294-1:1998 BSI 30 April 2002 i Contents Page National forewordInside front cover Foreword2 Forewordiii Te
12、xt of ISO 294-11 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 294
13、-1 July 1998 + A1 March 2002 ICS 83.080.20 Descriptors: See ISO document English version Plastics Injection moulding of test 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) Pl
14、astiques Moulage par injection des prouvettes de matriaux thermoplastiques Partie 1: Principes gnraux, et moulage des prouvettes usages multiples et des barreaux (inclut lamendement A1:2002) (ISO 294-1:1996 + A1:2001) Kunststoffe Spritzgieen von Probekrpern aus Thermoplasten Teil 1: Allgemeine Grund
15、lagen und Herstellung von Vielzweckprobekrpern und Stben (enthlt nderung A1:2002) (ISO 294-1:1996 + A1:2001) This European 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
16、 stipulate the conditions 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 Central Secretariat or to any CEN member. This European Stand
17、ard exists 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 Central Secretariat has the same status as the official versions. CEN members are the national stand
18、ards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee
19、 fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref. No. EN ISO 294-1:1998 + A1:2002 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Unc
20、ontrolled Copy, (c) BSI EN 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 over as a European Standard by Technical Committee CEN/TC 249, Plasti
21、cs, 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 national standards shall be withdrawn at the latest by January 1999. Acco
22、rding 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, S
23、pain, 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. NOTENormative references to International Standards are listed in Annex ZA (normative). Foreword to ame
24、ndment 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 amendment to the European Standard by Technical Committee CEN/TC 249, Plastics,
25、 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 national standards shall be withdrawn at the latest by September 2002. Acc
26、ording 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, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portug
27、al, 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 any modifications. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20
28、 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Amendment 1 2001-01-15 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 294-1:1998 ii BSI 30 April 2002 Contents Page Forewordiii Introduction1 1Scope1 2Normative references1 3Defini
29、tions2 4Apparatus5 5Procedure10 6Report on test-specimen preparation11 Annex A (informative) Examples of runner configurations12 Annex B (informative) Standardized injection-moulding mould components13 Annex C (informative) Example of an injection mould14 Annex ZA (normative) Normative references to
30、 international publications with their relevant European publications15 Figure 1 Schematic diagram of an injection-moulding cycle, showing the melt pressure (full line) and the longitudinal position of the screw (dashed line) as a function of time3 Figure 2 Cavity plate for a type A ISO mould6 Figur
31、e 3 Cavity plate for a type B ISO mould7 Figure 4 Examples of single-cavity moulds8 Figure 5 Example of a family mould9 Figure A.1 Different types of runner configuration12 Figure C.1 Exploded view of an injection mould with an interchangeable two-cavity plate for a type A ISO mould14 Licensed Copy:
32、 sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 294-1:1998 BSI 30 April 2002 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Int
33、ernational 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 w
34、ith 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 technical committees are circulated to the member bodies for voting. Publication as
35、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, Thermoplastic materials. Together with the other parts, this part of ISO 294 cancels and repl
36、aces 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 the basic specimen types required for the acquisition of comparable test data. Ca
37、re 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 title Plastics Injection moulding of test specimens of thermoplastic materials: Part
38、 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 ISO 294 are for information only. Descriptors: Plastics, thermoplastic resins, inje
39、ction moulding, moulding materials, test specimens, bars (materials), specimen preparation, reference data, generalities. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:2
40、2 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 294-1:1998 BSI 30 April 2002 1 Introduction Many factors in the injection-moulding 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 pr
41、operties of such specimens are in fact 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 requirement for reproducible and comparable operating conditions. It is important in d
42、efining moulding conditions to consider any influence the conditions may have on the properties to be determined. Thermoplastics may show differences in molecular orientation (important mainly with amorphous polymers), in crystallization morphology (for crystalline and semi-crystalline polymers), in
43、 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 thermal degradation of the polymer during moulding may also influence properties. Each of these phenomena
44、must be controlled to avoid fluctuation of the numerical values of the properties measured. 1 Scope This part of ISO 294 specifies the general principles to be followed when injection moulding test specimens of thermoplastic materials and gives details of mould designs for preparing two types of spe
45、cimen 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 provides a basis for establishing reproducible moulding conditions. Its purpose is to promote uniformity in describing the main parameters of the moulding process and al
46、so to establish uniform practice in reporting moulding conditions. The particular conditions required for the reproducible preparation 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 mate
47、rial or are to be agreed upon between the interested parties. NOTEISO round-robin 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 Nor
48、mative references The following standards contain provisions which, through reference in this text, constitute provisions of this part 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
49、 294 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of 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 m