DIN ISO 1409-2008 Plastics rubber - Polymer dispersions and rubber latices (natural and synthetic) - Determination of surface tension by the ring method (ISO 1409 2006) English ver.pdf
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1、November 2008DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.040.10; 83.080.01!$
2、Rw“1478499www.din.deDDIN ISO 1409Plastics/rubber Polymer dispersions and rubber latices (natural and synthetic) Determination of surface tension by the ring method (ISO 1409:2006)English version of DIN ISO 1409:2008-11Kunststoffe/Kautschuk Polymerdispersionen und Kautschuklatices (natrliche und synt
3、hetische) Bestimmung der Oberflchenspannung mit dem Ringverfahren (ISO 1409:2006)Englische Fassung DIN ISO 1409:2008-11SupersedesDIN ISO 1409:1999-07www.beuth.deDocument comprises 10 pages2 Contents Page National foreword 2 National Annex NA (informative) Bibliography 3 1 Scope 4 2 Normative referen
4、ces 4 3 Principle5 4 Reagents.5 5 Apparatus .5 6 Sampling.5 7 Procedure .5 7.1 Preparation of apparatus 5 7.2 Calibration 5 7.3 Preparation of the test sample .6 7.4 Determination.6 8 Expression of results 7 8.1 Calibration against standard mass7 8.2 Calibration against a standard liquid 8 9 Test re
5、port 8 Annex A (informative) Precision of the test method .9 Annex B (informative) Correction factors 10 National foreword This standard has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” (Secretariat: DSM, Malaysia), Subcommittee SC 2 “Testing and analysis” (Secretariat
6、: SIS, Sweden). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Technical Committee NA 062-04-32 AA Prfung von Latex. The text of ISO 1409:2006 has been adopted in this standard without any modification. It shoul
7、d be noted that there is an error in ISO 1409:2006, subclause 5.3 “Thermostatic bath”: The temperature for tropical countries should read (27 1) C instead of (27 + 1) C. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 123 DIN ISO 123 IS
8、O 124 DIN 53563 ISO 705 DIN ISO 705 ISO 255 DIN EN ISO 2555 ISO 321 DIN EN ISO 3219 ISO 3696:1987 DIN ISO 3696 DIN ISO 1409:2008-11 3 Amendments This standard differs from DIN ISO 1409:1999-07 as follows: a) Clause 2 “Normative references” has been updated. b) The standard has been editorially revis
9、ed. c) In the German version, the correction index in Table B.2 has been corrected. d) The content of ISO 1409:2006 has been adopted in full. Previous editions DIN ISO 1409: 1999-07 DIN 53593: 1980-01 National Annex NA (informative) Bibliography DIN 53563, Testing of latex Determination of total sol
10、ids content DIN EN ISO 2555, Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield test method DIN EN ISO 3219, Plastics Polymers/resins in the liquid state or as emulsions or dispersions Determination of viscosity using a rotational
11、 viscometer with defined shear rate DIN ISO 123, Rubber latex Sampling DIN ISO 705, Rubber latex Determination of density between 5 C and 40 C DIN ISO 3696:1991, Water for analytical laboratory use Specification and test methods DIN ISO 1409:2008-11 Plastics/rubber Polymer dispersions and rubber lat
12、ices (natural and synthetic) Determination of surface tension by the ring method WARNING Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. lt is the resp
13、onsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International Standard specifies a ring method for the determination of the surface tension of polymer dispersions and rubber latices (natural an
14、d synthetic). The method is valid for polymer dispersions and rubber latices with a viscosity less than 200 mPas. To achieve this, the dispersion or latex is diluted with water to a mass fraction of total solids of 40 %. If necessary, the solids content is further reduced to ensure that the viscosit
15、y is under the specified limit. The method is also suitable for prevulcanized latices and compounded materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referenc
16、es, the latest edition of the referenced document (including any amendments) applies. ISO 123, Rubber Iatex Sampling ISO 124, Latex, rubber Determination of total solids content ISO 705, Rubber latex Determination of density between 5 C and 40 C ISO 1652, Rubber latex Determination of apparent visco
17、sity by the Brookfield test method ISO 2555, Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield Test method ISO 3219, Plastics Polymers/resins in the liquid state or as emulsions or dispersions Determination of viscosity using a r
18、otational viscometer with defined shear rate ISO 3696:1987, Water for analytical laboratory use Specification and test methods 4 DIN ISO 1409:2008-11 3 Principle A horizontally suspended ring of thin wire is attached to a “du Nouy“ type tensiometer and immersed in the liquid under test, then slowly
19、pulled out. Just before the ring detaches itself from the surface of the liquid, the force required reaches a maximum. This force is measured by a torsion balance, inductive pick-up or some other suitable measuring device. 4 Reagents 4.1 Distilled water, carbon-dioxide-free, or water of equivalent p
20、urity (grade 3 as defined in ISO 3696:1987). 4.2 Toluene, of recognized analytical purity. 5 Apparatus 5.1 Tensiometer (du Nouy type), with a platinum or platinum-iridium alloy ring of either 60 mm or 40 mm nominal circumference (corresponding to 9,55 mm or 6,37 mm internal radius, respectively) and
21、 made of wire having a nominal radius of 0,185 mm. 5.2 Glass dish or vessel, of 50 cm3capacity, with an internal diameter of at least 45 mm. 5.3 Thermostatic bath, or some other means of adjusting the temperature of the test sample to NOTE The temperature coefficient of rubber latices over the tempe
22、rature range 20 C to 30 C is 0,1 mN/m per degree Celsius. 6 Sampling Carry out the sampling in accordance with one of the methods specified in ISO 123. 7 Procedure 7.1 Preparation of apparatus Clean the dish or vessel (5.2) carefully, since any contamination may lead to variable results. Clean the r
23、ing of the tensiometer (5.1) by washing in water (4.1) and then heating in the oxidizing section of a Bunsen or methanol flame. Take extreme care to avoid touching or distorting the tensiometer ring when handling it; ensure that the ring remains parallel to the surface of the liquid during the deter
24、mination. Failure to observe these precautions will lead to inaccurate results. 7.2 Calibration Carefully calibrate the tensiometer scale against a standard mass or a reference liquid such as distilled water (4.1) or toluene (4.2) in accordance with the manufacturers instructions, so that the scale
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