1、BRITISH STANDARD BS 5139:1991 Method of specifying General purpose polypropylene and propylene copolymer materials for moulding and extrusionBS5139:1991 This British Standard, having been prepared under the directionof the Plastics StandardsPolicy Committee, waspublished under the authorityof the Bo
2、ard of BSI andcomes into effect on 28 February 1991 BSI 09-1999 First published December 1974 Second edition February 1991 The following BSI references relate to the work on this standard: Committee reference PLM/28 Draft for comment 87/44855 DC ISBN 0 580 19179 6 Committees responsible for this Bri
3、tish Standard The preparation of this British Standard was entrusted by the Plastics Standards Policy Committee (PLM/-) to Technical Committee PLM/28, upon which the following bodies were represented: British Cable Makers Confederation British Plastics Federation British Telecommunications plc Minis
4、try of Defence Packaging and Industrial Films Association Standards Association of Australia Telecommunications Cables Group of BCMC Amendments issued since publication Amd. No. Date CommentsBS5139:1991 BSI 09-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Des
5、ignation 1 3 Property requirements 3 4 Methods of test and preparation of test specimens 3 5 Antioxidants 3 Appendix A Preparation of injection moulded test specimens 7 Figure 1 Examples of complete designations 2 Table 1 Codes for the intended application and method of processing 1 Table 2 Codes fo
6、r additives and other supplementary information 1 Table 3 Designatory property: melt flow rate 2 Table 4 Melt flow rate tolerances 3 Table 5 Additional properties 4 Table 6 Antioxidants 6 Publication(s) referred to Inside back coverBS5139:1991 ii BSI 09-1999 Foreword This British Standard has been p
7、repared under the direction of the Plastics Standards Policy Committee. It is a revision of BS5139:1974 which is withdrawn. It is related to ISO1873 “PlasticsPolypropylene (PP) and propylene copolymer thermoplastics” published by the International Organization for Standardization (ISO) which has now
8、 been issued in two parts, Part1 “Designation” and Part2 “Preparation of test specimens and determination of properties”. The ISO designation system in Part1 only affords a coarse classification. In view of the large number and types of general purpose polypropylene grades now available and their ma
9、ny and varied applications in the UK, the BSI committee concluded that it is no longer practicable to devise a single document that can serve as a purchasing specification for every available grade for every intended application. This revision has therefore transformed BS5139 from a classification i
10、nto a method of specifying general purpose polypropylene. A designation system based on the melt flow rate has been included to differentiate polypropylene thermoplastics from each other, based on main polymer types, basic polymer parameters, relevant modifications and recommended end uses. It is no
11、t implied that materials having the same designation give the same performance neither does this standard provide engineering data or performance data which may be required to specify materials for particular end-use applications or uses. Methods of test, including methods for the preparation of tes
12、t specimens, are also given. It is intended that all the methods of test will be published as BS2782 methods identical with the corresponding ISO standards. However, at the present time, although method numbers have already been allocated, some BS2782 methods have not yet been published and, until t
13、hey have, the corresponding ISO standards should be used. The properties of a polypropylene material may be changed by the incorporation of additives such as pigments and antistatic agents and therefore it is essential that the values quoted for selected properties are related to the material in the
14、 form in which it is supplied. The thermal history and the internal stresses of the test specimens may strongly influence the thermal and mechanical properties but exert less effect on the electrical properties which mainly depend on the chemical composition of the moulding compound. A British Stand
15、ard 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. Summary of pages This document comprises a front cover,
16、an inside front cover, pages i and ii, pages1 to 8, an inside back cover 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.BS5139:1991 BSI 09-1999 1 1 Scope This Brit
17、ish Standard describes a method of specifying requirements for all propylene homopolymers, co-polymers of propylene containing at least 50 % (mol/mol) of propylene and compositions thereof, in the form of powder, granules or pellets including compositions modified by colourants, additives and filler
18、s. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Designation 2.1 When required, the designation system given in2.2 in which the general purpose polypropylene is classified according to its basic type, method of processing, additives, designato
19、ry property, i.e. melt flow rate, and certain other supplementary information shall be used. The designation system is intended only to indicate a broad classification and in most circumstances specific values for the designatory properties and other characteristics will be required (see clause3 and
20、Table 1,Table 2 andTable 3). Table 1 Codes for the intended applicationand method of processing 2.2 The designation shall consist of the following information given in the order presented: a) the number and date of this British Standard, i.e. BS5139:1991; b) identification of the plastics materials,
21、 i.e.either PP-H, PP-C, PP-R and PP-Q, as follows. 1) Type H: all propylene homopolymers 2) Type C: all thermoplastic propylene block copolymers having not more than50% (mol/mol) of another monomer or monomers co-polymerized with propylene, and their blends with elastomeric and/or other1-olefinic po
22、lymers in which the total polymer fraction consists of at least50% (mol/mol) of propylene. 3) Type R: all thermoplastic propylene random co-polymers having not more than50% (mol/mol) of another monomer or monomers co-polymerized with propylene, and their blends with elastomeric and/or other1-olefini
23、c polymers in which the total polymer fraction consists of at least50% (mol/mol) of propylene. 4) Type Q: blends of polymers with at least50% (mol/mol) of propylene homopolymer type H, block copolymer and/or random copolymer type R. Table 2 Codes for additives and other supplementary information Cod
24、e Intended application and method of processing A B B1 B2 C E E1 E2 E3 E4 E5 F G H H1 H2 K L M Q R S T V X Y adhesives blow moulding extrusion blow moulding injection blow moulding calendering extrusion extrusion of pipes extrusion of profiles extrusion of sheets extrusion of tubings coextrusion ext
25、rusion of films general use coating powder coating dip coating cable and wire coating monofilament extrusion injection moulding compression moulding rotational moulding sintering tape manufacture thermoforming no indication textile yarns, spinning Code Additives and other supplementary information A
26、 B C D E F G H H1 H2 K L M N P Q1 Q2 S T X Y Z processing stabilized antiblocking coloured powder expandable special burning characteristics granules high heat stabilized stabilized against radiation extraction resistant metal deactivated light and weather stabilized nucleated natural (no colour add
27、ed) impact modified plateable laser printable lubricated transparent crosslinkable increased electrical conductivity antistaticBS5139:1991 2 BSI 09-1999 c) the code as given inTable 1 corresponding to the intended application and method of processing; d) the code as given inTable 2 corresponding to
28、additives and other supplementary information; NOTEOne character is reserved to indicate “Important additives which substantially modify the performance”. This is to avoid enumeration of self-evident additives and to restrict the indication to the one additive which is decisive for the intended appl
29、ication. A second can be added if required. e) the designatory property, melt flow rate, indicated by the codes as given inTable 3. If a property value falls on or near a cell limit, the manufacturer shall state which cell will designate the material. If subsequent individual test values lie on, or
30、either side of, the cell limit, because of manufacturing tolerances, the designation shall not be affected. NOTEThey indicate the central values of the nominal melt flow rate ranges shown inTable 3. f) the fillers designated using the following abbreviations and their nominal percentage contents (m/
31、m). If no fillers are present no entry in the designation shall be made. Table 3 Designatory property: melt flowrate GF Glass fibres GB Glass balls T Talc K Chalk X Not specified Z Miscellaneous Nominal melt flow rate range Code Method g/10 min. 0.10 0.20 0.40 0.80 1.5 3.0 6.0 12 25 50 k to to to to
32、 to to to to to 0.10 0.20 0.40 0.80 1.5 3.0 6.0 12 25 50 000 001 003 006 012 022 045 090 200 400 700 Carry out the test using condition 12 of Table 2 of Method720A aof BS2782 a The corresponding ISO method is ISO 1133 Condition 12 (condition M of Table 4 of ISO 1873-1). Example 1 A natural polypropy
33、lene homopolymer (type H), intended for film extrusion, heat stabilised with a nominal melt flow rate of 3.4 g/10 min (045). Reference 2.2 (a) (b) (c) (d) (e) (f) Designation BS 5139:1991 PP-H F HN 045 The full designation is: BS 5139:1991, PP-H, F, HN, 045 Example 2 A talc filled polypropylene mixt
34、ure intended for injection moulding containing 20 % (m/m) of filler, no additive and a nominal melt flow rate of 1.4 g/10 min (012). Reference 2.2 (a) (b) (c) (d) (e) (f) Designation BS 5139:1991 PP-Q M N 012 T20 The full designation is: BS 5139:1991, PP-Q, M, N, 012, T20 Figure 1 Examples of comple
35、te designationsBS5139:1991 BSI 09-1999 3 3 Property requirements 3.1 Minimum requirement The minimum requirement for a specification is characterization by melt flow rate. The materials shall be characterized by the declared value 1)and the corresponding tolerance (seeTable 4). Table 4 Melt flow rat
36、e tolerances 3.2 Additional properties Additional properties to be selected for a specification will be determined by the characteristics required for processing and the characteristics required of the processed article. Typical additional properties to be measured are listed inTable 5. NOTEThe purc
37、haser should establish his own correlation between the properties of the processed article and the material properties required for their achievement. 4 Methods of test and preparation of test specimens 4.1 Test methods Test methods shall be as indicated inTable 3 andTable 5 using injection moulded
38、test specimens prepared as described inAppendix A. 4.2 Conditioning Unless otherwise specified the test specimens shall be conditioned at23 2 C and505%r.h. for at least7days. 5 Antioxidants 5.1 General limitations The antioxidant shall be one or more selected from groups1 and2 ofTable 6 except that
39、antioxidants from group1 shall be used in conjunction with antioxidants from group2. Group1 antioxidants shall not be used alone. Antioxidants shall be used in such amounts that when the compound is tested as described in Method434D of BS2782 the total antioxidant content (group1 and group2) shall b
40、e between0.025% and0.8% by mass. These amounts shall be augmented if required by a synergist selected from group3 ofTable 6. 5.2 Contact with foodstuffs If the polypropylene is to be used in contact with foodstuffs, the antioxidants shall be approved by the British Plastics Federation and listed in
41、the British Industrial Biological Research Association Code of Practice as approved for use in contact with foodstuffs 2) . 5.3 Contact with water intended for human consumption Where polypropylene based products are used in contact with water intended for human consumption in applications covered b
42、y a British Standard its requirements with respect to the polypropylene based materials shall be met, e.g.BS4213 and BS4991. If no standard exists, the material used in the application shall meet the requirements of BS6920. 5.4 New or additional antioxidants (see note) New or additional antioxidants
43、 submitted for approval shall be accompanied by the following information: a) chemical formula, trade name and manufacture; b) proposed concentration range; c) whether suitable for use in a polymer in contact with foodstuffs and water intended for human consumption; d) a technical comparison with an
44、tioxidant(s) inTable 6 illustrating the ability of the antioxidant to confer adequate stability for fabrication and use on the polypropylene. NOTEApplications for approval of new antioxidants should be submitted to the Secretary of the BSI committee responsible for the preparation of this standard.
45、1) A typical physical property value indicated for a material by a manufacturer or supplier. Nominal melt flow rate Tolerances g/10 min. % k 0.8 30 0.8 k 6 25 6 20 2) “Plastics for food contact applications. A Code of Practice for safety in use”, revised edition1981, published by the British Plastic
46、s Federation,5 Belgrave Square, London SW1X8PHBS 5139:1991 4 BSI 09-1999 Table 5 Additional properties Property Unit BS 2782 method Corresponding international method Specimen dimensions Particulars Tests on moulding material Viscosity number Density cm 3 /g kg/m 3 730A 620A ISO 1628/3 ISO 1183/A mm
47、 Tests on standard specimens Mechanical properties Shear modulus Mechanical loss factor Tensile elastic modulus Tensile stress at break Tensile elongation at break Flexural elastic modulus Flexural stress at rupture Flexural deflection Impact strength Charpy Impact strength Izod c Compressive streng
48、th Rockwell hardness MPa MPa MPa % MPa MPa mm kJ/m 2 kJ/m 2 MPa MPa 342A + B a 342A + B a 320C 320C 320C 335A 335A 335A 359/2C 350/3A 350/4A 345A 365A ISO 537 ISO 537 ISO R527 ISO R527 ISO R527 ISO 178 ISO 178 ISO 178 ISO 179/2C ISO 180/3A ISO 180/4A ISO 604 ISO 2039/2 60 10 1 60 10 1 150 20/10 4 15
49、0 20/10 4 150 20/10 4 80 10 4 80 10 4 80 10 4 50 6 4 b(specimen type 2) 63.5 12.7 3.2 or 6.4B b(specimen type 3 or 4) 11.6 6 4 10 10 4 Frequency 0.1 to 10 Hz Frequency 0.1 to 10 Hz Testing speed 2 mm/min Testing speed 50 mm/min Testing speed 50 mm/min Testing speed 1 mm/min Testing speed 2 mm/min Testing speed 2 mm/min Testing speed 1 mm/min Load 35.8 daN, time 30 s Thermal properties Temperature of deflection C 121A ISO 75 method A 110 10 4 Heating rate 2 C/min Electrical pr
