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1、 RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORT- ING DOCUMENTATION. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO- LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
2、 INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STAN- DARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. Reference number ISO 124:1997/FDAM 2:2007(E) ISO 2007 FINAL DRAFT ISO/TC 45/SC 3 Secretariat: AFNOR Voting begins on: 2007-10-0
3、2 Voting terminates on: 2007-12-02 AMENDMENT ISO 124:1997 FDAM 2 Latex, rubber Determination of total solids content AMENDMENT 2: Determination at temperatures higher than 105 C Latex de caoutchouc Dtermination des matires solides totales AMENDEMENT 2: Dtermination des tempratures suprieures 105 C C
4、opyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) PDF disclaimer
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10、2 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. ii ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with
11、 ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) ISO 2007 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a
12、worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally 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
13、 on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are draft
14、ed in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Stan
15、dard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Amendment 2 to ISO 124:1
16、997 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wi
17、ng, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:
18、15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) ISO 2007 All rights reserved 1 Latex, rubber Determination of total solids content AMENDMENT 2: Determination at temperatures higher than 105 C 1 Scope Page 1, Subclause 4.2 Replace “or 105 C
19、5 C” by “or at any temperature from 105 C to 160 C, accurate to 5 C”. Page 2, Clause 6 At the end of the introductory paragraph, add the following sentence: “For synthetic rubber latex dried in accordance with 6.1, a higher drying temperature can be used by agreement between the interested parties i
20、n order to shorten the drying time (see Annex B).” Page 2, Subclause 6.1, second paragraph In the first sentence, after “heat it at 70 C 2 C for 16 h or at 105 C 5 C for 2 h”, insert: “or at a higher temperature (from 110 C 5 C to 160 C 5 C) for a shorter drying time (see Annex B)”. After “Return th
21、e dish to the oven for 30 min if the original drying temperature used was 70 C 2 C, or for 15 min if the drying temperature was 105 C 5 C”, add: “or for 10 min if the drying temperature was from 110 C 5 C to 160 C 5 C”. In the last sentence, add “or 10 min” between “Repeat the drying procedure for p
22、eriods of 30 min or 15 min” and “as appropriate”. Page 4 Add new Annex B. Page 5 Add new Annex C. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproductio
23、n or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) 2 ISO 2007 All rights reserved Annex B (informative) Drying conditions for synthetic latices at atmospheric pressure B.1 Suitable drying conditions for various synthetic latices have been determined, i.e. conditions
24、 which give a constant mass. These are summarized in Table B.1. The conditions given for each latex are not to be considered as required conditions, but as recommended conditions for the measurement of total solids content. B.2 CR (chloroprene rubber) latex should not be heated at more than 130 C be
25、cause of possible decomposition. Table B.1 Drying conditions at 130 C and 160 C Drying time min Latex a 130 C 160 C X-SBR 40 20 CR 30 Not applicable b VP 40 20 SBR 40 20 X-SBR (with antidegradant) 40 20 NBR (with antidegradant) 40 20 X-NBR 40 20 X-NBR (with antidegradant) 40 20 X-MBR 40 20 a “X-” me
26、ans “carboxylated”. b See Clause B.2. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO
27、 124:1997/FDAM 2:2007(E) ISO 2007 All rights reserved 3 Annex C (informative) Precision C.1 The precision of this method using drying temperatures higher than 105 C was determined in accordance with ISO/TR 9272. Refer to this document for terminology and explanations of statistical concepts. C.2 The
28、 precision details in this precision statement give an estimate of the precision of this test method with the materials used in the particular interlaboratory programme as described below. The precision parameters should not be used for acceptance/rejection testing of any group of materials without
29、documentation that the parameters are applicable to those particular materials and the specific test protocol of this test method. C.3 The precision results are given in Table C.1. The precision is expressed on the basis of a 98 % confidence level for the values established for repeatability r and r
30、eproducibility R. C.4 The results given in Table C.1 are average values and give an estimate of the precision of this test method as determined in an interlaboratory test programme conducted in 2004. Eleven laboratories performed triplicate analyses on three materials: X-SBR-1, X-SBR-2 and CR. Each
31、participating laboratory was required to carry out the test on each of these three materials, which had been given to the participants in the ITP, using the drying temperatures and times given in Table C.1. C.5 A type 1 precision was determined, based on the sampling method used for the latex materi
32、als in the ITP. C.6 Repeatability: The repeatability r (in measurement units) of this test method has been established as the appropriate value tabulated in Table C.1. Two single test results, obtained in the same laboratory under normal test conditions, that differ by more than the tabulated value
33、of r (for any given level) shall be considered to have come from different (non-identical) sample populations. C.7 Reproducibility: The reproducibility R (in measurement units) of this test method has been established as the appropriate value tabulated in Table C.1. Two single test results, obtained
34、 under normal test conditions, that differ by more than the tabulated value of R (for any given level) shall be considered to have come from different (non-identical) sample populations. C.8 Bias: In test method terminology, bias is the difference between an average test value and the reference (or
35、true) test property value. Reference values do not exist for this test method since the value (of the test property) is exclusively defined by the test method. Bias, therefore, cannot be determined for this particular test method. Copyright International Organization for Standardization Provided by
36、IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) 4 ISO 2007 All rights reserved Table C.1 Precision of test method at drying temper
37、atures of 130 C and 160 C Within laboratory Between laboratories Conditions Material a Mean value b r (r) R (R) X-SBR-1 50,7 0,46 0,91 0,46 0,91 X-SBR-2 50,6 0,20 0,39 0,38 0,75 160 C 20 min CR 50,1 0,18 0,36 0,33 0,66 X-SBR-1 50,7 0,21 0,41 0,25 0,49 X-SBR-2 50,6 0,08 0,16 0,11 0,22 130 C 40 min CR
38、 50,2 0,12 0,24 0,40 0,80 X-SBR-1 50,6 0,04 0,08 0,16 0,32 X-SBR-2 50,6 0,05 0,09 0,16 0,32 160 C 30 min CR 50,0 0,11 0,23 0,43 0,86 X-SBR-1 50,7 0,10 0,20 0,18 0,36 X-SBR-2 50,6 0,04 0,08 0,14 0,28 130 C 50 min CR 50,2 0,09 0,19 0,56 1,12 p = 11, q = 3, N = 2 r = repeatability (in measurement units
39、) (r) = repeatability (in percent of mean level) c R = reproducibility (in measurement units) (R) = reproducibility (in percent of mean level) c a “X-” means “carboxylated”. b Solids content in % (m/m). c As the actual measurement units are %, these values represent percent relative, i.e. percent of
40、 a percent. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organ
41、ization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 124:1997/FDAM 2:2007(E) ICS 83.040.10 Price based on 4 pages ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 05:15:35 MDTNo reproduction or networking permitted without license from IHS -,-,-