1、BRITISH STANDARD Plastics Injection moulding of test specimens of thermo setting powder moulding compounds (PMCs) Part 1 : General principles and moulding of multipurpose test specimens The European Standard EN IS0 10724-1:2001 has the status ofa British Standard ICs 83.080.10 NO COPYING WITHOUT BSI
2、 PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN IS0 10724- 1 1200 1 Incorporating Amendment No. I to (renumbers the BS IS0 as BS EN IS0 I0724-1:2001) and incovorat ing Corrigendum No. I BS IS0 10724-I.I998 BS EN IS0 10724-112001 13759 Corrigendum No. 1 National foreword 14 March 2002 Incorpor
3、ating the Annex ZA This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 February 1999 This British Standard is the official English language versio
4、n of EN IS0 10724-1:2001. It is identical with IS0 10724-1:1998. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: -aid enquirers to understand the text; -present to the responsi
5、ble internationalEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; -monitor related international and European developments and promulgate them in the UK. Alist of organizations represented on this committee can be obtained on reques
6、t to its secretary. Cr oss-r e fer enc e s 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 Standards Correspondence Index”, or by using the “Find” facility
7、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 Standard does not of itself confer immunity from legal obligations
8、. Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, page ii, pages 1 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments i
9、ssued since publication Amd.No. IDate I Comments OBSI 14 March 2002 13328 I 18 September 2001 IImplementation of the European Standard ISBN O 580 32056 1 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 10724-1 August 200 I ICs 83.080.10 English version Plastics - Injection moulding of test
10、specimens of thermosetting powder moulding compounds (PMCs) - Part 1 : General principles and moulding of multipurpose test specimens SO 10724-111998) Plastiques - Moulage par injection dprouvettes en compositions de poudre mouler (PMC) thermodurcissables - Partie 1: Principes gnraux et moulage dpro
11、uvettes usages multiples Vielzweclcprobekrpern Kunststoffe - Spritzgieen von Probekrpern aus duroplastischen rieselfahigen Formmassen (PMC) - Teil 1 : Allgemeine Grundlagen und Herstellung von (IS0 10724-1 1998) (IS0 10724-111998) This European Standard was approved by CEN on 1 1 June 200 1. CEN mem
12、bers are bound to comply with the CENKENELEC 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 applicati
13、on to the 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 CEN member into its own language and notified to the Management Centre has the same
14、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 Committee for
15、 Standardization Comit Europen de Normalisation Europisches Komitee fur Normung hhnagement Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN AU rights of exploitation in any form and by any means reserved worldwide for CEN national Member s. Ref. No. EN IS0 10724-1:2001 E EN IS0 10724-112001 I
16、CORRECTED 2002-02-06 I 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 held b
17、y 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 February 2002, and conflicting national standards shall be withdrawn at the latest by February 2002. According to the CENKENELEC Internal Reg
18、ulations, the national standards organizations ofthe 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
19、United Kingdom. Endor sement notice The text of the International Standard IS0 10724-1:1998 has been approved by CEN as a European Standard without any modifications. NOTE listed in Annex ZA (normative). Normative references to International Standards are O BSI 14 March 2002 INTERNATIONAL STANDARD I
20、S0 10724-1 First edition 1998-1 1-15 Plastics - Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) - Part 1: General principles and moulding of multipurpose test specimens Plastiques - Moulage par injection dprouvettes en compositions de poudre mouler (PMC) thermo
21、durcissables - Partie 1: Principes gnraux et moulage dprouvettes usages multiples Reference number IS0 1 0724-1 :1998( E) EN IS0 10724-112001 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of prep
22、aring International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be representedon that committee. International organizations, governmental and non-governmental, in l
23、iaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters ofelectrotechnical st an dardizat ion. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publi
24、cation as an International Standard requires approval by at least 75 YO of the member bodies casting a vote. International Standard IS0 10724-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. Together with part 2, this part of IS0 10724 cancels a
25、nd replaces IS0 10724: 1994, which has been revised to improve the definition of the injection-moulding parameters and has been restructured to specie two types of IS0 mould for the production of the basic specimen types required for the acquisition of comparable test data. Care has been taken to en
26、sure that the IS0 moulds described can all be fitted in existing injection-moulding equipment and have interchangeable cavity plates. As far as possible, the wording of this part of IS0 10724 and its definitions corresponds to that in its counterpart for thermoplastic materials, IS0 294: 1996, Plast
27、ics - Injection moulding of test specimens of thermoplastics materials. Unlike the latter, however, there is no need for the separate moulding of rectangular bars (80 mm X 10 mm X 4 mm, which should be taken from the central portion ofthe multipurpose test specimen) or for the moulding of small tens
28、ile bars (2 60 mm X 10 mm X 3 mm). Therefore the type B and type C IS0 moulds specified in IS0 294 have not been included in this part of IS0 10724. Regardless of this, and to avoid confusion, the designation of the different mould types in this part ofISO 10724 and in IS0 294 correspond to each oth
29、er. IS0 10724 consists of the following parts, under the general title Plastics - Injection moulding of test specimens of thewnosettingpowder moulding compounds (FMCs): -Part I: General principles and moulding of multipurpose test specimens; -Part 2: Small plates. Annex A, Annex B, Annex C and Annex
30、 D of this part of IS0 10724 are for information only. Descriptors: Plastics, thermosetting materials, thermosetting resins, injection moulding, moulding materials, test specimens, specimen preparation, generalities. 11 O BSI 14 March 2002 EN IS0 10724-112001 I nt r o du c t i o n Many factors in th
31、e injection-moulding process which can influence the properties of moulded test specimens and hence the measured 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 proc
32、ess used to prepare the specimens. Exact definition of each ofthe main parameters ofthe 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
33、 be determined. Thermosets may show differences in orientation and length of anisotropic fillers such as short fibres 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 in
34、fluence on mechanical properties than it is for thermoplastics. Each of these phenomena must be controlled to avoid fluctuation of the numerical values of the measured properties. 1 Scope This part ofISO 10724 specifies the general principles to be followed when injection moulding test specimens of
35、thermosetting powder moulding compounds (PMCs) and gives details of mould designs for preparing one type of specimen for use in establishing reproducible moulding conditions. Its purpose is to promote uniformity in describing the main parameters of the moulding process and also to establish uniform
36、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 material or are to be agreed
37、 upon between interested parties. NOTE IS0 round-robin tests with phenolic (PF), urea-formaldehyde (UF), melamine (MF), melamine phenolic (MP) and unsaturated-polyester (UP) injection-moulding materials have shown that mould design is an important factor in the reproducible preparation of test speci
38、mens. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 10724. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on thi
39、s part of IS0 10724 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 294- 1 : 1996, Plastics -Injection moulding of test specimens of thermopl
40、astic materials - Part I: Generalprinciples, and moulding of multipuvose and bar test specimens. IS0 294-2: 1996, Plastics -Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars. IS0 294-3: 1996, Plastics -Injection moulding of test specimens of thermoplastic m
41、aterials - Part 3: Small plates. IS0 4721, Plastics - Viabu1ary.l) IS0 2577: 1984, Plastics - Thermosetting moulding materials -Determination ofshrinkage. IS0 3 167: 1993, Plastics -Multipuvose test specimens. IS0 10350-1 : 1998, Plastics -Acquisition andpresentation of comparable single-point data
42、- Part I: Maulding materials. IS0 10724-2: 1998, Plastics -Injection moulding of test specimens of thermosetting materials - Part 2: Smallplates. IS0 11403-1: 1994, Plastics -Acquisition andpresentation of comparable multipoint data - Part I: Mechanical properties. IS0 1 1403-2: 1995, Plastics -Acqu
43、isition andpresentation of comparable multipoint data - Part 2: Thermal andprocessingpropenes. IS0 1 1403-3:, Acquisition andpresentation of comparable multipoint data - Part 3: Environmental influences on properties=). 1) To be published. (Revision of IS0 472: 1988). 1 O BSI 14 March 2002 EN IS0 10
44、724-112001 3 Definitions For the purposes of this part ofISO 10724, the definitions given in IS0 472 as well as the following apply. 3.1 mould temperature, Tc the average temperature ofthe mould cavity surfaces measured after the system has attained thermal equilibrium and immediately after opening
45、the mould it is expressed in degrees Celsius (OC) 3.2 melt temperature, TM the temperature of the plasticized material in a free shot it is expressed in degrees Celsius (OC) 3.3 melt pressure, p the pressure of the plastic material in front of the screw at any time during the moulding process (seeFi
46、gure 1) it is expressed in megapascals (MPa) the melt pressure, which is generated hydraulically for instance, can be calculated from the force Fs acting longitudinally on the screw using equation (1): 3 TI xD2 4 x 10 xFs P= where p is the melt pressure, in megapascals (MPa); Fs is the longitudinal
47、force, in kilonewtons (kN), acting upon the screw; D is the screw diameter, in millimetres (mm). 3.4 hold pressure,m the melt pressure during the hold time (see Figure 1) it is expressed in megapascals (MPa) 3.5 moulding cycle the complete sequence of operations in the moulding process required for
48、the production of one set of test specimens (see Figure 1) 3.6 cycle time, tT the time required to carry out a complete moulding cycle it is expressed in seconds (s) the cycle time is the sum of the injection time tI, the cure time tCR and the mould-open time to 3.7 injection time, tI the time from
49、the instant the screw starts to move forwarduntil the switchover point between the injection period and the hold period it is expressed in seconds (s) 2) To be published. 2 OBSI 14 March 2002 EN IS0 10724-112001 3.8 cure time, t,-R the time from the end of the injection period until the mould starts to open it is expressed in seconds (s) 3.9 hold time, tH the time from the end of the injection period until the hold pressure it is expressed in seconds (s) 3.10 mould-open time, to the time from the instant the mould starts to open until the mould is closed and ex
