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    DIN ISO 171-2000 Plastics - Determination of bulk factor of moulding materials (ISO 171 1980)《塑料 模塑材料体积系数的测定》.pdf

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    DIN ISO 171-2000 Plastics - Determination of bulk factor of moulding materials (ISO 171 1980)《塑料 模塑材料体积系数的测定》.pdf

    1、DEUTSCHE NORM June 2000 Plastics Determination of bulk factor of moulding materials (IS0 171 : 19801 DIN IS0 171 - ICs 83.080.01 Kunststoffe - Bestimmung des Fllfaktors von Formmassen (IS0 171 : 1980) This standard, together with DIN EN IS060 and DIN EN IS0 61, January 2000 editions, supersedes DIN

    2、53466, February 1984 edition. This standard incorporates International Standard IS0 171 Plastics - Determination of bulk factor of moulding materials. National foreword This standard has been prepared by ISO/TC 61. The responsible German body involved in its preparation was the Normenausschuss Kunst

    3、stoffe (Plastics Standards Committee), Technical Committee Physikalische, rheologische und analytische Prfungen. The DIN Standards corresponding to the International Standards referred to in clause 2 of the IS0 Standard are as follows: IS0 Standard DIN Standard IS0 60 IS0 61 IS0 554 DIN 50014 IS0 11

    4、83 DIN 53479 DIN EN IS0 60 DIN EN IS0 61 Amendments DIN 53466, February 1984 edition, has been superseded by the specifications of DIN IS0 171. Previous editions DIN 53466: 1960-11, 1984-02; DIN 53467: 1960-11; DIN 53468: 1974-12. National Annex NA Standards referred to (and not included in Referenc

    5、es) DIN 5001 4 Artificial climates in technical applications - Standard atmospheres DIN 53479 Determination of density of plastics and elastomers DIN EN IS0 60 Plastics - Determination of apparent density of material that can be poured from aspecified funnel (IS0 60 : 1977) DIN EN IS0 61 Plastics -

    6、Determination of apparent density of moulding material that cannot be poured from a specified funnel (IS0 61 : 1976) IS0 Standard comprises 2 pages. No pari of this standard may be reproduced without the prior permission of Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berl

    7、in, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN IS0 171 : 2000-0 English price group 05 Sales No. 0405 09.00 Page 1 IS0 171 : 1980 Plastics Determination of bulk factor of moulding materials Foreword IS0 (the International Organization for Standardization)

    8、is a worldwide federation of national standards institutes (IS0 member bodies). The work of developing Inter- national Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented

    9、on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by

    10、 the IS0 Council. International Standard IS0 171 was developed by Technical Committee ISO/TC 61, Plastics. It was submitted directly to the IS0 Council, in accordance with sub-clause 5.10.1 of part 1 of the Directives for the technical work of ISO. It cancels and replaces IS0 Recommendation R 171-19

    11、61, which had been approved by the member bodies of the following countries : Australia Austria Belgium Bulgaria Czechoslovakia France Germany, F. R. Hungary India Spain Israel Sweden Italy Switzerland Japan Turkey Netherlands United Kingdom Poland USA Portugal USSR Romania No member body had expres

    12、sed disapproval of the document. Page 2 IS0 171 : 1980 1 Scope and field of application This International Standard specifies a method of determining the bulk factor of a moulding material from its apparent density in the unmoulded form and its density in the moulded form. Knowledge of the bulk fact

    13、or of a moulding material is of value as a basis for the calculation of minimum cavity volume in the design of moulds. 5 Procedure 5.1 moulded form in accordance with IS0 60 or IS0 61. Determine the apparent density of the material in its un- 5.2 in accordance with ISOiR 1183. Determine the density

    14、of the material in its moulded form 6 Expression of results The bulk factor is given by the equation 2 References IS0 60, Plastics - Determination of apparent density of material that can be poured from a specified funnel. IS0 61, Plastics - Determination of apparent density of moulding material tha

    15、t cannot be poured from a specified fun- nel. IS0 554, Standard atmospheres for conditioning andlor testing - Specifications. ISOiR 1183, Plastics - Methods for determining the density and relative density (specific gravity) of plastics excluding cellular plastics. 3 Definition bulk factor of a moul

    16、ding material : The ratio of the volume of a given mass of moulding material to its volume in the moulded form. NOTE - It follows that it is also the ratio of the density of the material in its moulded form to its apparent density in the unmoulded form. 4 Test temperature The determinations of densi

    17、ty and apparent density for calcula- tion of the bulk factor shall be made at one of the test temperatures specified in IS0 554. ern y =- u where y is the bulk factor; e, is the density of the material in the moulded form, in grams per millilitre; eu is the apparent density of the material in the un

    18、- moulded form, in grams per millilitre. NOTE - In the calculation of bulk factor, the density of moulded material, in grams per millilitre, may be taken to be numerically equal to its specific gravity (relative density with water as the reference su bnance). 7 Test report The test report shall include the following particulars : reference to this International Standard; a) b) complete identification of the material tested; CI the test temperature; d) the apparent density of the moulding material; e) f) the bulk factor. the density of the material in its moulded form;


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