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1、IS0 Lb22 PTxL 9Y = Y851903 0577917 Ob9 W I NTER NAT I O NAL S TA N DA R D IS0 162211 Second edition 1994-1 0-1 5 Plastics - Polystyrene (PS) moulding and extrusion materials - Part 1: Designation system and basis for specifications Plastiques - Polystyrne (PS) pour moulage et extrusion - Partie 1: S
2、ystme de dsignation et base de spcification Reference number IS0 1622-1 1 1 994(E) -,-,- IS0 Lb22 PT*3 94 4853903 0577938 TT5 IS0 1622-1:1994(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of p
3、reparing 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 represented on that committee. International organizations, governmental and non-governmental,
4、in liaison with ISO, also take part in the work. IS0 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. Pub
5、lication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 1622-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This second edition cancels and replaces the first edit
6、ion (IS0 1622-1:1985), the text of which has been brought into accordance with the revised frame text for designation standards. IS0 1622 consists of the following parts, under the general title Plastics - Polystyrene (PSI moulding and extrusion materials: - Part 7: Designation system and basis for
7、specifications - Part 2: Preparation of test specimens and determination of proper- ties O IS0 1994 All rights reserved. Unless otherwise specified. no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,
8、without permission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-1 21 1 Genve 20 Switzerland Printed in Switzerland II -,-,- IS0 Lb22 PT*L 74 4853903 05779ii7 731 D INTERNATIONAL STANDARD 0 IS0 IS0 1622-1:1994(E) Plastics - Polystyrene (PS) moulding
9、 and extrusion materials - Part 1: Designation system and basis for specifications 1 Scope 1.1 be used as the basis for specifications. This part of IS0 1622 establishes a system of designation for polystyrene thermoplastic material, which may 1.2 The types of polystyrene plastics are differentiated
10、 from each other by a classification system based on ap- propriate levels of the designatory properties a) Vicat softening temperature b) melt mass-flow rate and on information about the intended application and/or method of processing, important properties, additives and colorants. 1.3 This part of
11、 IS0 1622 is applicable to all amorphous polystyrene homopolymers. It applies to materials ready for normal use, unmodified or modified by colorants, additives, fillers, etc. This part of IS0 1622 does not apply to expanded polystyrene, styrene copolymers, homopolymers of substituted styrene and tho
12、se modified with other polymers such as elastomers. 1.4 It is not intended to imply that materials having the same designation give necessarily the same perform- ance. This part of IS0 1622 does not provide engineering data, performance data or data on processing conditions which may be required to
13、specify a material for a particular application and/or method of processing. If such additional properties are required, they shall be determined in accordance with the test methods specified in part 2 of this International Standard, if suitable. 1.5 additional requirements may be given in data bloc
14、k 5 (see clause 3, introductory paragraph). In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, 1 -,-,- IS0 Lb22 PT*3 94 4853903 O577920 653 I IS0 1622-1 : 1994(E) Identity block I 0 IS0 Description block (OptiOnl) 2 Normative references in
15、ternational Standard The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 1622. 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
16、 IS0 1622 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 306: 1994, Plastics - Thermoplastic materials - Determination of Vicat softening te
17、mperature IVSV. IS0 1043-1 :1987, Plastics - Symbols - Part 7: Basic polymers and their special characteristics. IS0 1133:1991, Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics. IS0 1622-2:-”, Plastics - Polystyrene (PSI moulding and ext
18、rusion materials - Part 2: Preparation of test specimens and determination of properties. 3 Designation system The designation system for thermoplastics is based on the following standardized pattern: I Designation 1 The designation consists of an optional description block, reading “Thermoplastics”
19、, and an identity block com- prising the International Standard number and an individual-item block. For unambiguous designation, the individual-item block is subdivided into 5 data blocks comprising the following information: Data block 1: Data block 2: Data block 3: Data block 4: Data block 5: Ide
20、ntification of the plastic by its symbol PS in accordance with IS0 1043-1 (see 3.1). Position 1 : Intended application or method of processing (see 3.2). Positions 2 to 8: Important properties, additives and supplementary information (see 3.2). Designatory properties (see 3.3). Fillers or reinforcin
21、g materials and their nominal content (not included in this standard). For the purpose of specifications, a fifth data block may be added containing additional infor- mation. The first character of the individual-item block shall be a hyphen. The data blocks shall be separated from each other by com
22、mas. If a data block is not used, this shall be indicated by doubling the separation sign, .e. by two commas (J. 1) To be published. (Revision of IS0 1622-2:1980) 2 -,-,- IS0 Lb22 PT*1 94 4851903 0577923 59T X 0 IS0 R Mould release agent S Lubricated No indication 2 Antistatic IS0 1622-1:1994(EI 3.1
23、 Data block 1 In this data block, after the hyphen, polystyrene plastics are indentified by the symbol “PS“, in accordance with IS0 1043-1. 3.2 Data block 2 In this data block, information about the intended application and/or method of processing is given in position 1 and information about importa
24、nt 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. 3.3 Data block 3 In this data block, the range of
25、 the Vicat softening temperature is represented by a 3-figure code-number (see 3.3.1 1 and the range of the melt flow rate by a 2-figure code-number (see 3.3.2). The code-numbers are separated from each other by hyphens. If a property value falls on or near a range limit, the manufacturer shall stat
26、e which range will designate the ma- terial. If subsequent individual test values lie on, or on either side of, the limit because of manufacturing tolerances, the designation is not affected. NOTE 1 polymers. Not all the combinations of the values of the designatory properties have to be provided fo
27、r currently available 3 -,-,- IS0 Lb22 PT*1 94 m 4851903 0577922 426 m IS0 1622-1:1994(E) _ 075 , 100 80 but , 90 but G 100 8 IS0 03 06 12 20 3.3.1 Vicat softening temperature The Vicat softening temperature shall be determined in accordance with IS0 306. The possible values of Vicat softening tempe
28、rature are divided into 4 ranges, each represented by a 3-figure code-number as specified in table 2. 4 but 8 but 16 Table 2 - Ranges of Vicat softening temperature in data block 3 Code-number Range of Vicat softening temperature (“Cl 3.3.2 Melt flow rate The melt mass-flow rate shall be determined
29、in accordance with IS0 1133 at a temperature of 200 “C with a load of 5 kg. The possible values of melt mass-flow rate are divided into 4 ranges, each represented by a 2-figure code-number as specified in table3. Table 3 - Ranges of melt mass-flow rate in data block 3 Range of melt mass-flow rate IM
30、FR) (g/lO min) Code-number NOTE 2 part of IS0 1622. Melt mass-flow rate (MFR) will be replaced by melt volume-flow rate (MVR) at the next five-year revision of this 3.4 Data block 5 Indication of additional requirements in this optional data block is a way of tranforming the designation of a materia
31、l 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. 4 -,-,- 0 IS0 Description block (optional) IS0 Lb22 PT*L 9Y m 4853903 0577923 3b2 m IS0 1622-1:1994(E) Internatio
32、nal Standard individual-item block number block 11 21 3 4 Example of a designation A polystyrene moulding and extrusion material (PSI, intended for injection moulding (M), light and/or weather sta- bilized (L), natural (not coloured) (NI, with a Vicat softening temperature VST/B/50 of 84 OC (085) and a melt flow rate of 9,0 9/10 min (121, would be designated: 5 -,-,- IS0 3b22 PTUL 94 m 4853903 0577924 2T9 M IS0 1622-1:1994(E) Q IS0 ICs 83.080.20 Descriptors: plastics, thermoplastic resins. moulding materials, extrusion materials, polystyrene, designation. Price based on 5 pages -,-,-