1、BRITISH STANDARD BS EN ISO 10724-2:2001 Incorporating Amendment No. 1 to BS ISO 10724-2:1998 (renumbers the BS ISO as BS EN ISO 10724-2:2001) Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 2: Small plates The European Standard EN ISO 10724-2:2000
2、 has the status of a British Standard ICS 83.080.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN ISO 10724-2:2001 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of t
3、he Standards Committee and comes into effect on 15 March 1999 BSI 23 October 2001 ISBN 0 580 32057 X National foreword This British Standard is the official English language version of EN ISO 10724-2:2000. It is identical with ISO 10724-2:1998. The UK participation in its preparation was entrusted t
4、o Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: 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 interes
5、ts informed; monitor related international and European developments and promulgate them in the UK. 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
6、d to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a con
7、tract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword pag
8、e, the ISO title page, pages ii to iv, pages 1 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 13401 23 October 2001 Implementation of the Europea
9、n StandardEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10724-2 September 2000 ICS 83.080.10 English version Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 2: Small plates (ISO 10724-2:1998) Plastiques Moulage par injection dprouvettes
10、 en compositions de poudre mouler (PMC) thermodurcissables Partie 2: Petites plaques (ISO 10724-2:1998) Kunststoffe Spritzgieen von Probekrpern aus duroplastischen rieselfhigen Formmassen (PMC) Teil 2: Kleine Platten (ISO 10724-2:1998) This European Standard was approved by CEN on 8 September 2000.
11、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 references concerning such national standards may be obtained on a
12、pplication 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 the responsibility of a CEN member into its own language and notified to the Central Secretariat h
13、as 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, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European C
14、ommittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10724-2:2000 EEN ISO 10724
15、-2:2000 BSI 23 October 2001 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 an European Standard by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is h
16、eld 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 March 2001, and conflicting national standards shall be withdrawn at the latest by March 2001. According to the CEN/CENELEC Internal Reg
17、ulations, 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, Spain, Sweden, Switzerland and the
18、 United Kingdom. NOTE Normative references to International Standards are listed in annex ZA (normative).EN ISO 10724-2:2000 ii BSI 23 October 2001 Contents Page Foreword iii Introduction iii 1S c o p e 1 2 Normative references 1 3 Definitions 1 4A p p a r a t u s 1 5 Procedure 4 6 Report on test-sp
19、ecimen preparation 4 Annex A (informative) Recommended applications for small-plate test specimens or parts thereof 5 Annex B (informative) Weld lines 6 Annex C (informative) Marking to test specimens 8 Annex D (informative) Bibliography 9 Figure 1 Details of type D1 and D2 ISO moulds 2 Figure 2 Cav
20、ity plate for type D1 and D2 ISO moulds 3 Figure B.1 Moulding produced using single inserts (hatched), showing the locations from where tensile specimens can be taken (dashed lines) 6 Figure B.2 Moulding produced using multiple inserts (hatched), showing the locations from where tensile specimens ca
21、n be taken (dashed lines) 7 Figure C.1 Positions of the markings for cavities “1” and “2” 8 Descriptors: Plastics, thermosetting materials, thermosetting resins, injection moulding, moulding materials, test specimens, plates, specimen preparation.EN ISO 10724-2:2000 BSI 23 October 2001 iii Foreword
22、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 technical
23、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 elect
24、rotechnical standardization. Draft International Standards adopted by the technical 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 10724-2 was prepa
25、red by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. Together with part 1, this part of ISO 10724 cancels and replaces ISO 10724:1994, which has been revised to improve the definition of the injection-moulding parameters and has been restructured to specify tw
26、o types of ISO mould for the production of 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. As far as possible,
27、 the wording of this part of ISO 10724 and its definitions corresponds to that in its counterpart for thermoplastic materials, ISO 294:1996, Plastics Injection moulding of test specimens of thermoplastic materials. Unlike the latter, however, there is no need for the separate moulding of rectangular
28、 bars (80 mm 10 mm 4 mm, which should be taken from the central portion of the multipurpose test specimen) and the moulding of small tensile bars ( 60 mm 10 mm 3 mm). Therefore the type B and type C ISO moulds specified in ISO 294 were not included in this part of ISO 10724. Regardless of this, and
29、to avoid confusion, the designation of the different mould types in this part of ISO 10724 and in ISO 294 correspond to each other. ISO 10724 consists of the following parts, under the general title Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs): Part
30、 1: General principles and moulding of multipurpose test specimens; Part 2: Small plates. Annex A to Annex D of this part of ISO 10724 are for information only. Introduction Many factors in the injection-moulding process which can influence the properties of moulded test specimens and hence the meas
31、ured values obtained when the specimens are used in a test method. The thermal and mechanical properties 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 i
32、s 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. Thermosets may show differences in orientation of anisotropic fillers such as short fibres
33、 and in curing. Residual (“frozen-in”) stresses in the moulded test specimens may also influence properties. Due to the crosslinking of thermosets, molecular orientation is of less influence on mechanical properties than it is for thermoplastics. Each of these phenomena must be controlled to avoid f
34、luctuation of the numerical values of the measured properties.iv blankEN ISO 10724-2:2000 BSI 23 October 2001 1 1 Scope This part of ISO 10724 specifies two two-cavity moulds, designated the type D1 and type D2 ISO moulds, for the injection moulding of small plates measuring 60 mm 60 mm with preferr
35、ed thicknesses of 1 mm (type D1) or 2 mm (type D2) which can be used for a variety of tests (see Annex A). The moulds may additionally be fitted with inserts for studying the effects of weld lines on the mechanical properties (see Annex B). 2 Normative references The following standards contain prov
36、isions which, through reference in this text, constitute provisions of this part of ISO 10724. 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 10724 are encouraged to investigate the possibility
37、 of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 472:, Plastics Vocabulary 1) . ISO 2577:1984, Plastics Thermosetting moulding materials Determination of shrinkage. ISO 6603-1:, Plastics
38、Determination of puncture impact behaviour of rigid plastics Part 1: Non-instrumented impact test 2) . ISO 6603-2:, Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented impact test 3) . ISO 10724-1:1998, Plastics Injection moulding of test specimens of thermoset
39、ting materials Part 1: General principles and moulding of multipurpose test specimens. 3 Definitions For the purposes of this part of ISO 10724, the definitions given in ISO 472 as well as those in ISO 10724-1 apply. 4 Apparatus 4.1 Type D1 and D2 ISO moulds Type D1 and D2 moulds are two-cavity moul
40、ds (see Figure 2) intended for the preparation of plates measuring 60 mm 60 mm. The plates produced using these moulds shall have the dimensions given in Figure 1. 1) To be published. (Revision of ISO 472:1988) 2) To be published. (Revision of ISO 6603-1:1985) 3) To be published. (Revision of ISO 66
41、03-2:1989)EN ISO 10724-2:2000 2 BSI 23 October 2001 Key Sp Sprue GG a t e R Runner P Pressure sensor Dimensions in mm l Length of plate 60 2 1) b Width of plate 60 2 1) h Thickness of plate: type D1 mould 1,0 0,1 type D2 mould 2,0 0,1 1) l G Length of gate 4,0 0,1 2) h G Height of gate (0,75 0,05) h
42、 2)3) l R Length of runner 25 to 30 4) b R Width of runner at gate (b + 6) h R Depth of runner at gate h +( 1 , 5 0,5) l * Unspecified distance l P Distance of pressure sensor from gate 5 2 5) 1) These dimensions are for the preferred test specimen used in ISO 6603. 2) See note 1 to subclause 4.1. 3
43、) See note 2 to subclause 4.1. 4) See note 3 to subclause 4.1. 5) The position of the pressure sensor shall be further limited by the following conditions: l p + r p 10 l p r p 0 where r pis the radius of the sensor. Figure 1 Details of type D1 and D2 ISO mouldsEN ISO 10724-2:2000 BSI 23 October 200
44、1 3 The main constructional details of type D1 and D2 ISO moulds shall be as shown in Figure 1 and Figure 2 and shall meet the following requirements: Key Sp Sprue Moulding volume V M 30 000 mm 3 (at 2 mm thickness) G Gate Projected area A p 11 000 mm 2 l C is the distance between the lines along wh
45、ich the test specimens are cut from the runners (see notes 4 and 5 to subclause 4.1) Figure 2 Cavity plate for type D1 and D2 ISO moulds a) See ISO 10724-1:1998, subclause 4.1.4, item a). b) Not applicable. c) See ISO 10724-1:1998, subclause 4.1.4, item c). d) and e) Not applicable. f) See ISO 10724
46、-1:1998, subclause 4.1.4, item f), but without the last part of the second sentence. g) See ISO 10724-1:1998, subclause 4.1.4, item g), but with reference to ISO 6603. The main dimensions, in millimetres, of the cavities shall be as follows (see also Figure 1): Length: 60 to 62; Width: 60 to 62; Dep
47、th: type D1 mould 1,0 to 1,1 type D2 mould 2,0 to 2,1. h) to j) See ISO 10724-1:1998, subclause 4.1.4, items h) to j). k) Figure 1 shows the position of a pressure sensor P within the cavity, which is mandatory for the measurement of moulding shrinkage only (see ISO 2577). It may be useful, however,
48、 in controlling the injection period with any ISO mould see ISO 10724-1:1998, subclause 4.1.4, item k). The pressure sensor shall be flush with the cavity surface in order to avoid interference of the melt flow. l) See ISO 10724-1:1998, subclause 4.1.4, item l). m) See ISO 10724-1:1998, subclause 4.
49、1.4, item m), and Annex C of this part of ISO 10724. n) See ISO 10724-1:1998, subclause 4.1.4, item n), and Annex D of this part of ISO 10724.EN ISO 10724-2:2000 4 BSI 23 October 2001 NOTE 1 The height and length of the gate strongly influence the process of curing of the melt as it flows into the cavity, and hence the moulding shrinkage (see ISO 2577). The dimensions of the gate are therefore defined with tight tolerances. NOTE 2 Gates which are severely li
