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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This ratio is approximately 1. The fritted ashm is extra-coarse with fused edge; Kontesmm diameter or equivalent. In case of excessive inhalation, seek fresh clean air.
satm The outer sections of this strip are discarded, thus leaving only a sample of the material closest to the conductor or shielded surface. Precision and Bias 7 Low swell ratios indicate a more tightly bound structure.
Such extraction test methods are described herein. Glass wool 13 to 19 mm thick [1?
Link to Active This link will always route to the current Active version of the standard. The degree of crosslinking is not expressed as a asm of total crosslinkability or similar expression, but is judged from swell ratio and percent extract based on experience with the particular polymer-solvent system under consideration.
Link to Active This link will always route to the current Active version of the standard. In high-voltage cable employing strand shielding tapes or compounds, the strip should be shaved as aastm as possible along the shielded surface, being careful not to include any of the semiconducting compound see Fig. A bench-top laboratory mill4,5 is satisfactory, although any procedure which will produce a sample of the required?
A superscript epsilon e indicates an editorial change since the last revision or reapproval. For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratory that tested them. 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. Warning—The following explanations of r and R Each laboratory obtained three test results for each material.
ASTM D2765 – 16
The test data in Table 1 should not be rigorously applied d275 acceptance or rejection of these materials, as those data are speci? Referenced Documents purchase separately Astj documents listed below are referenced within the subject standard but are not provided as part of the standard.
The test strip used for extraction should be taken next to the conductor only when strand shielding tapes or compounds are not employed. NOTE 9—The size of the swollen test specimen dictates the size of the weighing bottle to be used.
ASTM.D Determination of Gel content and swell ratio of crosslinked ethylene plastics_百度文库
NOTE 7—The solvent must cover the swollen test specimen at the conclusion of the immersion period to obtain reliable results.
Use only in a ventilated hood. For referee tests, extraction time is to be as speci? A small wire, attached to the cage and extending through the re? Reagents and Materials ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Weigh this pouch W1.
In the event of excessive inhalation, axtm fresh clean air. Both measurements are obtained in one test. Active view current version of standard. The extraction thimble assembly rests upon the mm portion of the thimble previously cut off, the latter inserted into the modi? NOTE 8—The immersion period speci? Do not inhale the vapors. Such extraction test methods are described herein. Any test specimen preparation, conditioning, d275, or testing parameters, or a combination thereof, covered in the materials speci?
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 inch-pound units in brackets are for information only. NOTE 10—Extreme care must be used in d27765 the swollen test specimen to obtain reliable results.