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1、INTERNATIONAL STANDARD IS0 8989 Second edition 1995-l 2-15 Plastics - Liquid phenolic resins - Determination of water miscibility Plastiques - R m is the mass, in grams, of the test portion. NOTE 2 It is also possible to express the results as the ratio By means of the burette (5.41, add grade 3 wat
2、er, also preconditioned at 23 “C IL 0,l OC, in accordance with the following procedure: 1 n where x = WMIIOO - the first addition shall be approximately 50 % of the quantity expected to be required to reach the miscibility limit (i.e. approximately 50 % of that determined in the preliminary test if
3、the miscibility was unknown); - subsequent additions shall be approximately 10 % of the quantity expected to be required, until turbidity occurs and vanishes again upon stirring; - verify with the thermometer that the temperature of the mixture is 23 “C + 0,l C, then resume the addition of water dro
4、pwise until the turbidity per- sists for at least 30 s. Record the volume (V ml) of water added. 9 Test report The test report shall include the following information. a) a reference to this International Standard; b) all details necessary for complete identification of the resin tested; c) the test
5、 result, calculated in accordance with clause 8; d) the date of the test. NOTE 3 If both opalescent turbidity and opaque turbidity were determined, as discussed in 7 2, note 1, there will be two results 2 Copyright International Organization for Standardization Provided by IHS under license with ISO
6、 Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 04:58:20 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8989:1995(E) ICS 83.080.10 Descriptors: plastics, resins, liquid resins, phenoplasts, tests, mixing tests, determination, mixing water Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 04:58:20 MDTNo reproduction or networking permitted without license from IHS -,-,-