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A temperature-memory color-changing insulating material and insulating sleeve

A technology of insulating material and temperature memory

Active Publication Date: 2016-11-30
JIANGSU ELECTRIC POWER COMPANY YANGZHOU POWER +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the thermochromic luminescent protective layer can change color with the temperature change to visually observe the temperature change of the cable, it does not have the functions of insulation and shielding, and still needs the outer sheath, inner sheath, and insulating shielding layer of the inner layer. and other structures to achieve the insulation effect, the structure is complex, which increases the cost of production and implementation

Method used

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  • A temperature-memory color-changing insulating material and insulating sleeve
  • A temperature-memory color-changing insulating material and insulating sleeve
  • A temperature-memory color-changing insulating material and insulating sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]

[0028]

[0029] Prepare the insulating sleeve with the above components as follows: first mix the components together, then use a twin-screw extruder to plasticize, melt, and extrude granules, and the extrusion temperature is 180°C; use a single-screw extruder The machine extrudes the obtained particles into a round tube with the temperature controlled at 150°C; the obtained round tube is processed by irradiation and then heated and expanded with the temperature controlled at 130°C. Among them, the color materials in the components can use various color toners and color masterbatches (the same below).

Embodiment 2

[0031]

[0032] Prepare the insulating sleeve with the above components as follows: first mix the components together, then use a twin-screw extruder to plasticize, melt, and extrude granules, and the extrusion temperature is 180°C; use a single-screw extruder The obtained pellets are extruded into a round tube by a machine, and the temperature is controlled at 170°C; the obtained round tube is subjected to irradiation processing, and then heated and expanded, and the temperature is controlled at 150°C.

Embodiment 3

[0034] The types and mass parts of the components and the steps of preparing the insulating tube are the same as those in Example 2, except that the temperature is controlled at 160°C during the process of extruding the obtained pellets into a round tube with a single-screw extruder; during the heating and expansion process, the temperature is controlled at 140°C.

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PUM

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Abstract

The invention discloses a temperature-memory color-changing insulating material and an insulating sleeve, which comprise the following components by mass: 25-50 parts of EPDM rubber, 20-40 parts of polyolefin elastomer, and dioctyl phthalate 5-20 parts of ester, 15-30 parts of aluminum hydroxide, 1-5 parts of antioxidant, 20-40 parts of flame retardant, 1-5 parts of light stabilizer, 5-40 parts of colorant. And the casing is prepared according to the following method: after mixing all the components together, use a twin-screw extruder to plasticize, melt, and extrude the pellets, and the extrusion temperature is 180 ° C; use a single-screw extruder to extrude the obtained pellets Produced into a round tube, the temperature is controlled at 140-170°C; the obtained round tube is subjected to irradiation processing, and then heated and expanded, and the temperature is controlled at 130-150°C. The insulating material and the casing can change color when the temperature reaches 70°C, and the color returns to normal when the temperature is lower than 70°C.

Description

technical field [0001] The invention relates to the technical field of high-temperature insulating materials, in particular to a temperature-memory color-changing insulating material and an insulating sleeve. Background technique [0002] In the field of electric power construction and equipment, components such as bus bars, cables, cable accessories, and reinforced aluminum stranded wires need to be covered with insulating sleeves made of insulating materials to avoid chemical corrosion and prevent maintenance personnel from entering the charged gap by mistake and causing personal injury and other adverse factors. However, the temperature of these components will increase with the running time of the power system. When the temperature is too high, it will cause internal circuit failures, and even burn and explode in severe cases, seriously affecting the normal and safe operation of the power system. [0003] In order to prevent adverse effects caused by overheating of comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/28H01B3/44H01B17/58H01B19/00
Inventor 冯迎春徐勇高晓宁张红月
Owner JIANGSU ELECTRIC POWER COMPANY YANGZHOU POWER
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