A method for evaluating the self-healing performance of cable sheath materials

Abstract

The invention provides a method for evaluating the self-healing property of a cable sheath material. According to the method, a cable sheath material is cut, and the self-healing efficiency of the material is calculated through a tensile test; the evaluation method has characteristics of simpleness, easy performing, easy promotion and high accuracy of the evaluation result, can effectively judge the self-healing ability of the material, and can easily establish the tensile mechanical property evaluation test specification of the self-healing cable sheath material; with the method, the self-healing material can be optimized and improved according to the self-healing cable evaluation result, such that the self-healing property, the mechanical property and the electrical property can mutuallypromoted; and further the service life of the material can be easily prolonged by understanding the self-healing property of the insulating sheath material so as to effectively control the cost and reduce the reduced resource loss.

Description

technical field

[0001] The invention relates to the technical field of chemical materials, in particular to a method for evaluating the self-healing performance of cable sheath materials. Background technique

[0002] The development of self-healing cable sheath materials is a major breakthrough in the existing fault repair methods, which is conducive to prolonging the life of materials and saving the cost of power grid construction and operation and maintenance. The self-healing performance of the cable sheath material means that it does not rely on fault location technology, does not need to dig out the covering soil, remove the wires, power outages, and does not require external stimulation. A major breakthrough in the way faults are repaired. Self-healing requires not only the apparent repair of the material, but as an electrical material, the cable also requires that the mechanical properties can be restored to normal use after self-healing. At present, there are few ...

Examples

Embodiment 1

[0051] Divide the cable sheath material into 3 samples. The arithmetic mean value of the tensile stress of each sample before damage is 1.1452MP1804997a. After cutting off the sample, put the two ends of the wound in contact with each other, wait for 2 hours at room temperature, and then use The arithmetic mean δ of the tensile stress of each sample after the first healing is determined by the universal tensile testing machine 1 is 1.0956MP1804997a, and finally calculated the self-healing efficiency η of the sample 1 is 95.66%.

Embodiment 2

[0053] The sample in embodiment 1 is disconnected from the original position, re-healed, and measure the tensile stress δ of healing for the second time 2 is 1.0064MP1804997a, and the self-healing efficiency η of the sample is finally calculated 2 was 87.87%.

Embodiment 3

[0055] The sample in embodiment 1 is disconnected from the original position again, and healed again, measure the tensile stress δ of healing for the third time 3 is 0.9468MP1804997a, and finally calculated the self-healing efficiency η of the sample 3 was 82.67%.

[0056] It can be seen from the above examples that the self-healing evaluation method provided by the present invention performs multiple damage treatments on the cable sheath material in order to obtain accurate tensile stress and ensure the accuracy of the evaluation results.

technical field

[0001] The invention relates to the technical field of chemical materials, in particular to a method for evaluating the self-healing performance of cable sheath materials. Background technique

[0002] The development of self-healing cable sheath materials is a major breakthrough in the existing fault repair methods, which is conducive to prolonging the life of materials and saving the cost of power grid construction and operation and maintenance. The self-healing performance of the cable sheath material means that it does not rely on fault location technology, does not need to dig out the covering soil, remove the wires, power outages, and does not require external stimulation. A major breakthrough in the way faults are repaired. Self-healing requires not only the apparent repair of the material, but as an electrical material, the cable also requires that the mechanical properties can be restored to normal use after self-healing. At present, there are few ...

Examples

Embodiment 1

[0051] Divide the cable sheath material into 3 samples. The arithmetic mean value of the tensile stress of each sample before damage is 1.1452MP1804997a. After cutting off the sample, put the two ends of the wound in contact with each other, wait for 2 hours at room temperature, and then use The arithmetic mean δ of the tensile stress of each sample after the first healing is determined by the universal tensile testing machine 1 is 1.0956MP1804997a, and finally calculated the self-healing efficiency η of the sample 1 is 95.66%.

Embodiment 2

[0053] The sample in embodiment 1 is disconnected from the original position, re-healed, and measure the tensile stress δ of healing for the second time 2 is 1.0064MP1804997a, and the self-healing efficiency η of the sample is finally calculated 2 was 87.87%.

Embodiment 3

[0055] The sample in embodiment 1 is disconnected from the original position again, and healed again, measure the tensile stress δ of healing for the third time 3 is 0.9468MP1804997a, and finally calculated the self-healing efficiency η of the sample 3 was 82.67%.

[0056] It can be seen from the above examples that the self-healing evaluation method provided by the present invention performs multiple damage treatments on the cable sheath material in order to obtain accurate tensile stress and ensure the accuracy of the evaluation results.

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