Posted on February 22, 2019

ASTM D2765 PDF

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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Summary of Test Methods 4. A bench-top laboratory mill4,5 is satisfactory, although any procedure which will produce a sample of the required? A number in parentheses indicates the year of last reapproval. 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.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Summary of Test Method The outer sections of this strip are discarded, thus leaving only a sample of the material closest to the conductor or shielded surface.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Historical Version s – view previous versions of standard. However, if there is any doubt about the values obtained with reused extractant, the test should be repeated with fresh extractant. Such extraction test methods are described herein. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The transfer of the test specimen should be made quickly.

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If there are no material specifications, then the default conditions apply.

ASTM D2765 – 16

Link to Active This link will always route to the current Active version of the standard. Each laboratory obtained three test results for each material. The test specimen should not be squeezed with the forceps. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials speci?

However, this test method permits swell ratio to be determined. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. The principles of A small wire, attached to the cage and extending through the re? Provided that no chemical degradation occurs, the greater the degree of crosslinking the lower the amount of extract s2765 percent extract.

Last previous edition approved in as D — They have been particularly useful for electrical insulations since specimens may be selected from those portions of the insulation most susceptible to insufficient crosslinking.

The test data in Asym 1 should not be rigorously applied to acceptance or rejection of these materials, as those data are speci? Warning—The following explanations of r and R The methods described herein 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.

The extraction thimble assembly rests upon the mm portion of the thimble previously cut off, the latter inserted into the modi?

Reagents and Materials It is not equivalent to ISO in any other measurement or section. Excessive inhalation of d7265 vapors may cause dizziness or headache, or both. E—Ground-glass or cork joint. Increasing this period to 72 h had no signi? d27655

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The extraction thimble, with extra-coarse fritted glass disk sealed in; Kontesmm body diameter, mm height or equivalent height must subsequently be cut to 75 mm. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability d7265 regulatory limitations prior to use.

ASTM.D Determination of Gel content and swell ratio of crosslinked ethylene plastics_百度文库

For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratory that tested them. If necessary, they may be cut into two or three pieces crosswise so that they can be completely submerged in the solvent.

The inch-pound units in brackets are for information only. Test specimens that break up during the immersion period usually very low degrees of crosslinking can be caught on ast mesh or? Do not inhale the vapors.

Suspend the cage and specimen in the solvent so that the bottom edge of the cage is almost touching the bottom of the? C—Area most susceptible to insufficient crosslinking. Hence, determination of the gel content provides a means of both controlling the process and rating the quality of finished products. Low values of percent extract indicate a high degree of crosslinking. Link to Active This link will always route to the current Active version of the standard.