ASTM D2765 Standard Test Methods for Determining Gel Content and Swelling Rate of Crosslinked Ethylene Plastics

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D2765 testing. The gel content (insoluble fraction) produced by crosslinking in ethylene plastics is determined by extraction with solvents such as decahydronaphthalene or xylenes.

The methods described here are applicable to cross-linked ethylene plastics of all densities, including those containing fillers, and all provide corrections for inert fillers found in some of these compounds.

Test Method A, which allows for the most complete extraction in the shortest time, will be used for referee tests, but two alternative non-judge Test Methods B and C are also described.

Test Method B differs from the referee test method only in sample preparation; that is, instead of the ground sample required by the referee test method, it requires the use of chips taken from selected points, for example, in cable insulation. Because the sheared particles are larger, less total surface exposure per sample is exposed, so this test method normally gives leaching values ​​approximately 1 to 2% lower than the referee method.

Test Method C requires a solid sample to be extracted in xylenes at a constant temperature of 110°C.

Extraction tests are performed on items of any shape. It has been particularly useful for electrical insulation, as samples can be selected from those parts of the insulation most susceptible to insufficient crosslinking.

Values ​​stated in SI units or inch-pound units will be considered standard separately.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

EUROLAB assists manufacturers with ASTM D2765 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.