ASTM D STANDARD TEST METHODS FOR DETERMINATION OF GEL CONTENT AND SWELL RATIO OF CROSSLINKED ETHYLENE PLASTICS. Differential Scanning. Calorimetry (ASTM. D). Dilute Solution. Viscometry ( ASTM. D, F). Fatigue (ASTM E). Swelling Analysis. (ASTM D). Tue, 30 Oct GMT astm d standard test methods pdf – Test. Method B differs from the referee test method only in sample preparation; that is.
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If this is done, the time of extraction must be reported. They have been particularly useful for electrical insulations since specimens can be selected from those portions of the insulation most susceptible to insufficient crosslinking.
ASTM D2765 – 16
For referee tests, extraction time is to be as speci? D — 01 A—Identi? Suspend the cage and specimen in the solvent so that the bottom edge of the cage is almost touching the bottom of the? Do not inhale the vapors. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applica- 1 These test methods are under the jurisdiction of ASTM Committee D20 on Plastics and are the direct responsibility of Subcommittee D X2765 test result was the result of one individual determination.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. A small wire, attached to the cage and extending through the re? Weigh this pouch W1. Determination of the g The test data in Table 1 should not be rigorously applied to acceptance or rejection of these materials, as those data are speci? In the event of excessive inhalation, seek fresh aetm air. In case of excessive asttm, seek fresh clean air.
D22765 measurements are obtained in one test. Shake this sieved material over a mesh sieve and reject any material that passes through. The inch-pound units in brackets are for information only. Specific precautionary statements are given in Sections 6, 10, and Use only in a ventilated hood. A bench-top laboratory mill4,5 is satisfactory, although any procedure which will produce a sample of the required? E—Ground-glass or cork joint. Precision and Bias 7 The transfer of the test specimen should be made quickly.
Originally approved in NOTE 4—It has been reported that drying time sometimes can be materially shortened if the cage and sample are cooled for 15 min and then are placed either on a suspended screen or on lint-free absorbent material to remove excess solvent before being put into the vacuum drying oven. Close the pouch by folding over the open side and stapling it to form a cage.
Summary of Test Method Historical Version s – view previous versions of standard. For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratory that tested them.
Fold over the open side of the pouch and staple the edge to form a cage. The test strip used for extraction should be taken next to the conductor only wstm strand shielding tapes or compounds are not employed. C—Area most susceptible to insufficient crosslinking. They are applicable to crosslinked ethylene plastics of all densities, including those containing fillers, and all provide corrections for the inert fillers present in some of those compounds.
Formulations containing low-density polyethylene usually require 24 h and those containing high-density polyethylene require 16 h to reach weight equilibrium. If you feel that your comments have not received a asrm hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. We density of polymer at the immersion temperature volume of polymer in gel Wo?
ASTM.D Determination of Gel content and swell ratio of crosslinked ethylene plastics_百度文库
Low values of percent extract indicate a high degree of crosslinking. Cool cold trap with dry ice and acetone to catch and condense xylene vapor. However, this test method permits swell ratio to be v2765.
For Size 2 AWG and smaller, the dimensions should be proportionately less. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Test Method B differs from the referee test method only in sample preparation; that is, it requires use of shavings taken at selected points in cable insulation, for example, rather than the ground sample required by the referee test method.