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ASTM D4565 Test Methods for Insulations and Jackets of Telecommunications Wire and Cable

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ASTM D4565 Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable. 


ASTM D4565 test methods cover procedures for the physical testing of thermoplastic insulations and jackets used on telecommunications wire and cable and the testing of physical characteristics and environmental performance properties of completed products. To determine the procedure to be used on the particular insulation or jacket or on the completed wire or cable, make reference to the specification for that product.


The Mechanical Test for insulations and jackets: 

Aging testFor sheath only, the performance change of the sheath material is evaluated by simulating the aging process under long-term use conditions.
Cold bending testFor insulation only, test the bending performance of the insulating material in a low temperature environment to ensure that it will not be brittle under cold conditions.
Environmental stress cracking testSuitable for polyolefin sheath, to test the ability of sheath material to resist cracking under specific environmental stress.
Thermal deformation testFor the sheath only, to investigate the ability of the sheath material to resist deformation at high temperatures.
Thermal shock testFor the sheath only, to evaluate the performance stability of the sheath when subjected to rapid temperature changes.
Insulation adhesion testMeasure the adhesion between the insulation and the conductor or other adjacent materials to ensure that the insulation layer will not fall off easily during use.
Insulation and sheath retraction test (oven method)                           The thermal stability of the insulation and sheath is evaluated by placing the sample in an oven to heat it and observing the retraction of the insulation and sheath.
Insulation compression test

Test the performance of the insulating material when subjected to compressive force to ensure that it can withstand a certain pressure during cable installation and use.

Insulation retraction test (solder method)

It is mainly used to evaluate the retraction characteristics of insulating materials when exposed to high-temperature solder.

Melt flow rate

For polyolefin materials, measure the change of their flow properties in the hot melt state to reflect the change in the properties of the material.

Oil immersion test

For the sheath only, the performance changes of the sheath material in the oil environment are investigated, and its oil resistance is evaluated.

Oxygen induction time

It is divided into polyolefin insulation and cable filling compounds, and the oxidation resistance of the material is evaluated by measuring the induction period in the oxygen environment.

Tensile and elongation tests

Determine the tensile strength and elongation at break of insulation and sheath materials to evaluate the mechanical properties of the materials.




Physical and environmental testing of finished wires and cables:

Cable torsion testSimulate the torsional force that the cable may experience during use to evaluate its performance stability.
Compound flow testIt is suitable for filling core wires and cables to test the flow performance of filled compounds under specific conditions.
Corrugated elongation testTest the elongation performance of the corrugated structure of the cable when stretched or bent.
Cable impact testEvaluate the impact resistance of the cable by simulating the impact conditions.
Sheath bonding testCheck the bonding effect between the sheath and other components to ensure the integrity of the cable structure.
Sheath incision testEvaluates the ability of the sheath to resist cracking and vandalism in the presence of incisions.
Sheath peel or pull testMeasure the bond between the sheath and the rest of the cable to ensure that the sheath will not peel off easily during use.
Sheath sliding strength testTest the sliding performance of the sheath when subjected to external force, and evaluate its fit with other parts of the cable.
Pressure testApplied to air-core wires and cables, by applying pressure to verify their tightness and structural integrity.
Sheath adhesion testTo investigate the adhesion between the sheath and other parts of the cable.
Water permeation testSuitable for filling core wires and cables to test the ability of the cable to resist water penetration.
Wire and cable bending testSimulate the bending of wires and cables during installation and use to evaluate their bending performance.
Wire Breaking Strength TestMeasure the breaking strength of a wire to evaluate its mechanical reliability




Related Standard

ISO 1133 Test Method of Determination melt mass-flow rate (MFR, MVR)

ISO 1133: Plastics -- Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics.

ISO 1133 standard specifies two procedures for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. One is a mass-measurement method. The other is a displacement-measurement method. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to ISO 1133. The test conditions normally used for thermoplastics are listed in annexes. 

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