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1、INTERNATIONAL STANDARD IS0 4440-I First edition 1994-l O-01 Thermoplastics pipes and fittings - Determination of melt mass-flow rate - Part 1: Test method Tubes et raccords en mat %om is the nominal load, in kilograms; her is the reference time (10 min), in seconds (600 9; m is the average mass of t
2、he extrudate cut-offs, in grams; t is the interval between two cuts of an extrudate, in seconds. Express the results to two significant figures. 8 Test report The test report shall include the following information: a) a reference to this part of IS0 4440; b) complete identification of the pipe or f
3、itting tested; c) the chemical nature and physical form of the material with which the cylinder is charged; d) details of any conditioning; e) the diameter of the die, the temperature and the load used to carry out the test; f) the melt-flow rate; g) details of any unsual behaviour of the test speci
4、men, such as decomposition, sticking, distortion of the extrudate or an unexpected variation in the melt-flow rate. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 04:59:22 MDT
5、No reproduction or networking permitted without license from IHS -,-,- IS0 4440-1:1994(E) ICS 23.040.20; 23.040.45 Descriptors: pipes (tubes), pipe fittings, plastics products, thermoplastic resins, plastic tubes, tests, determination, meltlng. 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 04:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,-