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1、BRITISH STANDARD BS ISO 11542-1:1994 Incorporating Amendment No. 1 Implementation of ISO 11542-1:1994 Plastics Ultra-high-molecular- weight polyethylene (PE-UHMW) moulding and extrusion materials Part 1: Designation system and basis for specifications ICS 83.080.20 Licensed Copy: sheffieldun sheffie
2、ldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11542-1:1994 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 June 1995
3、 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference PRI/32 Draft for comment 93/30301 DC ISBN 0 580 24207 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/32, Olefin pla
4、stics, upon which the following bodies were represented: British Cable Makers Confederation British Plastics Federation Ministry of Defence Packaging and Industrial Films Association Telecommunications Cables Group of BCMC Amendments issued since publication Amd. No.DateComments 9540August 1997Indic
5、ated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11542-1:1994 BSI 03-2000i Contents Page Committees responsibleInside front cover National forewordii Forewordiii Text of ISO 11542-11 Licensed Copy: shef
6、fieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11542-1:1994 ii BSI 03-2000 National foreword This British Standard reproduces verbatim ISO 11542-1:1994 and implements it as the UK national standard. This British Standard is published under the directio
7、n of the Sector Board for Materials and Chemicals whose Technical Committee PRI/32 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor rel
8、ated international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. A British Standard does not purport to include all the necessary prov
9、isions 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title p
10、age, pages ii to iv, pages 1 to 5 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, U
11、ncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) ii BSI 03-2000 Contents Page Forewordiii 1Scope1 2Normative references1 3Designation and specification system1 4Examples of designations5 Table 1 C
12、ode-letters used in data block 22 Table 2 Ranges of density in data block 33 Table 3 Ranges of viscosity number in data block 33 Table 4 Ranges of elongational stress in data block 34 Table 5 Code-letters for fillers and reinforcing materials in data block 44 Licensed Copy: sheffieldun sheffieldun,
13、na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) BSI 03-2000iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
14、y 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 take part in the
15、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 an International Standard requi
16、res approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11542-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. ISO 11542 consists of the following parts, under the general title Plastics Ultra-high-molecular-
17、weight polyethylene (PE-UHMW) moulding and extrusion materials: Part 1: Designation system and basis for specifications; Part 2: Preparation of test specimens and determination of properties. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI i
18、v blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) BSI 03-20001 1 Scope 1.1 This part of ISO 11542 establishes a system of designation for PE-UHMW thermoplastic material which may be used as the basis for specificati
19、ons. For the purposes of this part of ISO 11542, PE-UHMW materials are polyethylene materials having a melt mass-flow rate (MFR), measured at 190 C and 21,6 kg load, of less than 0,1 g/10 min. 1.2 The types of PE-UHMW plastics are differentiated from each other by a classification system based on ap
20、propriate levels of the designatory properties a) density b) viscosity number c) elongational stress and on information about intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. 1.3 This part of ISO 11542 is applicable to a
21、ll PE-UHMW homopolymers and to ultra-high-molecular-weight co-polymers of ethylene having a content of other 1-olefinic monomers of less than 50 % (m/m) and a content of non-olefinic monomers with functional groups up to a maximum of 3 % (m/m). It applies to materials ready for normal use in the for
22、m of powder, granules or pellets and to materials unmodified or modified by colorants, additives, fillers, etc. 1.4 It is not intended to imply that materials having the same designation give necessarily the same performance. This part of ISO 11542 does not provide engineering data, performance data
23、 or data on processing conditions which may be required to specify a material for a particular application and/or method of processing. A part 2 to this International Standard covering the preparation of test specimens and determination of properties is being prepared for use if such data are requir
24、ed. 1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements may be given in data block 5 (see clause 3, introductory paragraph). 2 Normative references The following standards contain provisions which, through refere
25、nce in this text, constitute provisions of this part of ISO 11542. 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 11542 are encouraged to investigate the possibility of applying the most recent
26、 editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1043-1:1987, Plastics Symbols Part 1: Basic polymers and their special characteristics. ISO 1043-2:1988, Plastics Symbols Part 2: Fillers and reinforcing materials. I
27、SO 1183:1987, Plastics Methods for determining the density and relative density of non-cellular plastics. ISO 1628-3:1991, Plastics Determination of viscosity number and limiting viscosity number Part 3: Polyethylenes and polypropylenes. 3 Designation and specification system The designation and spe
28、cification system for thermoplastics is based on the following standardized pattern: Designation Description block (optional) Identity block International Standard Number block Individual-item block Data block 1 Data block 2 Data block 3 Data block 4 Data block 5 Licensed Copy: sheffieldun sheffield
29、un, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) 2 BSI 03-2000 The designation consists of an optional description block, reading “Thermoplastics”, and an identity block comprising the International Standard number and an individual-item block. For unambiguo
30、us coding, the individual-item block is subdivided into 5 data blocks comprising the following information: The first character of the individual-item block shall be a hyphen. The data blocks shall be separated from each other by commas. If a data block is not used, this shall be indicated by doubli
31、ng the separation sign, i.e. by two commas (,). 3.1 Data block 1 In this data block, after the hyphen, PE-UHMW plastics are identified by the symbol “PE-UHMW”, in accordance with ISO 1043-1. 3.2 Data block 2 In this data block, information about intended application and/or method of processing is gi
32、ven in position 1 and information about important properties, additives and colour in positions 2 to 8. The code-letters used are specified in Table 1. If information is presented in positions 2 to 8 and no specific information is given in position 1, the letter X shall be inserted in position 1. Ta
33、ble 1 Code-letters used in data block 2 Data block 1:Identification of the plastic by its symbol PE-UHMW in accordance with ISO 1043-1 (see 3.1). Data block 2:Position 1: Intended application or method of processing (see 3.2). Positions 2 to 8: Important properties, additives and supplementary infor
34、mation (see 3.2). Data block 3:Designatory properties (see 3.3). Data block 4:Fillers or reinforcing materials and their nominal content (see 3.4). Data block 5:For the purpose of specifications, a fifth data block may be added containing additional information. Code-letterPosition 1Code-letterPosit
35、ions 2 to 8 AProcessing stabilized CColoured DPowder EExtrusionEExpandable FExtrusion of filmsFSpecial burning characteristics GGeneral useGGranules HHeat ageing stabilized KMetal deactivated LLight or weather stabilized MMoulding NNatural (no colour added) QCompression moulding RMould release agent
36、 SSinteringSLubricated XNo indicationXCrosslinkable YTextile yarns, spinningYIncreased electrical conductivity ZAntistatic Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) BSI 03-20003 3.3 Data block 3 In this data block,
37、the range of the density is represented by a 2-figure code-number (see 3.3.1), the viscosity number by a 1-figure code-number (see 3.3.2) and the elongational stress by a 1-figure code-number (see 3.3.3). The code-numbers are separated from each other by hyphens. If a property value falls on or near
38、 a range limit, the manufacturer shall state which range will designate the material. If subsequent individual test values lie on, or on either side of, the limit because of manufacturing tolerances, the designation is not affected. NOTE 1Not all combinations of the values of the designatory propert
39、ies have to be provided for currently available polymers. 3.3.1 Density The density shall be determined in accordance with ISO 1183 on a piece of the test specimen as used for elongational-stress determination. The possible values of density are divided into 6 ranges, each represented by a 2-figure
40、code-number as specified in Table 2. Table 2 Ranges of density in data block 3 3.3.2 Viscosity number The viscosity number shall be determined in accordance with ISO 1628-3, preferably using a nitrogen atmosphere. The possible values of viscosity number are divided into 6 ranges, each represented by
41、 a 1-figure code-number as specified in Table 3. Table 3 Ranges of viscosity number in data block 3 Code-number Range of density kg/m3 20u 922 25 922butu 927 30 927butu 932 35 932butu 937 40 937butu 942 45 942 Code-number Range of viscosity number ml/g 0u 1 710 1 1 710butu 2 190 2 2 190butu 2 700 3
42、2 700butu 3 400 4 3 400butu 4 100 5 4 100 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) 4 BSI 03-2000 3.3.3 Elongational stress The elongational stress shall be determined by a method agreed on between the interested pa
43、rties. An ISO test method is being prepared and will be included in part 2 of this International Standard. The possible values of elongational stress are divided into 5 ranges, each represented by a 1-figure code-number as specified in Table 4. Table 4 Ranges of elongational stress in data block 3 3
44、.4 Data block 4 In this data block, the type of filler and/or reinforcing material is represented by a single code-letter in position 1 and its physical form by a second code-letter in position 2, the code-letters being as specified in Table 5. Subsequently (without a space), the mass content may be
45、 given by a 2-figure number in positions 3 and 4. Table 5 Code-letters for fillers and reinforcing materials in data block 4 Code-number Range of elongational stress MPa 1 0,1butu 0,2 2 0,2butu 0,3 3 0,3butu 0,5 5 0,5butu 0,7 7 0,7 Code-letterMaterialCode-letterForm BBoronBBeads, spheres, balls CCar
46、bona DPowder FFibre GGlassGGround HWhiskers KCalcium carbonate MMineralab, metala SSynthetic, organicaSScales, flakes TTalc XNot specifiedXNot specified ZOthersaZOthersa a These materials may be further defined by their chemical symbol, for example, or additional symbols defined in the relevant Inte
47、rnational Standard. In the case of metals (M) it is essential to indicate the type of metal by means of its chemical symbol. b Mineral fillers should be designated more precisely if a symbol is available. Mixtures of materials and/or forms may be indicated by combining the relevant codes using the s
48、ign “+” and placing the whole between parentheses. For example, a mixture of 25 % glass fibres (GF) and 10 % mineral powder (MD) would be indicated by (GF25 + MD10). Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11542-1:1994(E) BSI 03-
49、20005 3.5 Data block 5 Indication of additional requirements in this optional data block is a way of transforming the designation of a material into a specification for a particular application. This may be done for example by reference to a suitable national standard or to a standard-like, generally established specification. Only material with code-numbers 1 to 5 in Table 3 shall be specified if the abrasion resistance of the material is important to the application. 4 Examples of designations 4.1 Designation
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