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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For referee tests, extraction time is to be as speci? 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. April 1, 1 Reapproved without revision. Summary of Test Methods 4.

ASTM D2765 – 16

Both measurements are obtained in one test. They have been particularly useful for electrical insulations since specimens may be selected from those portions of the insulation most susceptible to insufficient crosslinking.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. NOTE 11—Derivation of calculations: Link to Active This link will always route to the current Active version of the standard. Fold over the open side of the pouch and staple the edge to form a cage.

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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.

D — Your comments sstm invited either for revision of this adtm or for additional standards and should be addressed to ASTM International Headquarters. Each laboratory obtained three test results for each material. For Size 2 AWG and smaller, asmt dimensions should be proportionately less. Warning—The following explanations of r and R Determination of the g Formulations containing low-density polyethylene usually require 24 h and those containing high-density polyethylene require 16 h to reach weight equilibrium.

Fold this to form a square measuring approximately 40 mm [11? The surface-to-volume ratio shall be kept as small as reasonably possible. We density of polymer at the immersion temperature volume of polymer in gel Wo? The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

A small wire, attached to the cage and extending through the re? The inch-pound units in parentheses are for information only. 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. The inch-pound units in brackets are for information only.

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Excessive inhalation of the vapors may cause dizziness or headache, or both. Summary of Test Method However, a longer immersion period does slightly increase the values for percent extract. The surfaces should not be subjected to excess blowing too long or more than once on each side ; otherwise more than the surface xylene will be removed.

Each test result was the result of one individual determination.

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

In the event of excessive inhalation, seek fresh clean air. Weigh the pouch and specimen W2. Provided that no chemical degradation occurs, 5 the lower the swell ratio the greater the crosslinking and the lower the molecular ast, between crosslinks.

Combining values from the two systems may result in non-conformance with the standard. Close the pouch by folding over the open side and stapling it to form a cage.

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