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Preparation method of surface-flashover-resistant insulating material for high-temperature superconducting

A surface flashover and insulating material technology, applied in the field of preparation of new insulating materials, can solve problems restricting the development of superconducting devices

Inactive Publication Date: 2020-04-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surface flashover of low-temperature insulation is one of the main causes of insulation failure in superconducting systems, which seriously restricts the development of superconducting devices

Method used

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  • Preparation method of surface-flashover-resistant insulating material for high-temperature superconducting
  • Preparation method of surface-flashover-resistant insulating material for high-temperature superconducting
  • Preparation method of surface-flashover-resistant insulating material for high-temperature superconducting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A kind of preparation method of surface flashover resistant insulating material for high temperature superconducting, comprises the following steps:

[0029] 1) Prepare polypropylene granules and weigh them;

[0030] 2) Prepare aluminum nitride particles and weigh them, the amount of aluminum nitride particles is 5% of the weight of polypropylene particles;

[0031] 3) Place the polypropylene granules on a two-roller machine and heat them;

[0032] 4) Add aluminum nitride particles after the polypropylene particles are melted, turn on the double-roller machine, set the speed at 50rmp and mix for 10 minutes to form a polypropylene / aluminum nitride composite material;

[0033] 5) After mixing evenly, the polypropylene / aluminum nitride composite material is taken out, and naturally cooled to room temperature for use;

[0034] 6) Preheat the stainless steel mold to 190°C, put it into the polypropylene / aluminum nitride composite material, pressurize at 15MPa ...

Embodiment 2

[0038] Embodiment 2: A kind of preparation method of surface flashover resistant insulating material for high temperature superconducting, comprises the following steps:

[0039] 1) Prepare polypropylene granules and weigh them;

[0040] 2) Prepare and weigh aluminum nitride particles, the amount of aluminum nitride particles is 20% of the weight of polypropylene particles;

[0041] 3) Place the polypropylene granules on a two-roller machine and heat them;

[0042] 4) Add aluminum nitride particles after the polypropylene particles are melted, turn on the double-roller machine, set the speed at 50rmp and mix for 10 minutes to form a polypropylene / aluminum nitride composite material;

[0043] 5) After mixing evenly, the polypropylene / aluminum nitride composite material is taken out, and naturally cooled to room temperature for use;

[0044] 6) Preheat the stainless steel mold to 190°C, put it into the polypropylene / aluminum nitride composite material, pressurize at 15MPa and ...

Embodiment 3

[0048] Embodiment 3: a kind of preparation method of surface flashover resistant insulation material for high temperature superconducting, comprises the following steps:

[0049] 1) Prepare polypropylene granules and weigh them;

[0050] 2) Prepare aluminum nitride particles and weigh them, the amount of aluminum nitride particles is 5% of the weight of polypropylene particles;

[0051] 3) Place the polypropylene granules on a double-roller and heat them;

[0052] 4) Add aluminum nitride particles after the polypropylene particles are melted, turn on the double-roller machine, set the speed at 50rmp and mix for 10 minutes to form a polypropylene / aluminum nitride composite material;

[0053] 5) After mixing evenly, the polypropylene / aluminum nitride composite material is taken out, and naturally cooled to room temperature for use;

[0054] 6) Preheat the stainless steel mold to 195°C, put it into the polypropylene / aluminum nitride composite material, pressurize at 17MPa and p...

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Abstract

The invention discloses a preparation method of a surface-flashover-resistant insulating material for high-temperature superconducting. The preparation method comprises the following steps: 1) preparing polypropylene particles and weighing; 2) preparing aluminum nitride particles and weighing, wherein the dosage of the aluminum nitride particles is 5-20% of the weight of the polypropylene particles; 3) heating the polypropylene particles on a double-roller machine; 4) adding aluminum nitride particles after the polypropylene particles are melted, and starting the double-roller machine to set arotating speed to form a polypropylene / aluminum nitride composite material; 5) uniformly mixing, taking out the polypropylene / aluminum nitride composite material, and naturally cooling to room temperature for later use; 6) preheating a stainless steel mold, putting the polypropylene / aluminum nitride composite material, and carrying out hot pressing; 7) keeping the mold pressure, and air-cooling the mold; and 8) taking out the polypropylene / aluminum nitride composite material, and naturally cooling to room temperature. According to the invention, the insulating material with the high surface flashover voltage is applied to a high-temperature superconducting power transmission system under the normal working condition and the quench condition.

Description

technical field [0001] The invention relates to the field of preparation of new insulating materials, in particular to a preparation method of a new insulating material with high surface flashover voltage applied in a high-temperature superconducting power transmission system. Background technique [0002] The development of high-temperature superconductivity (HTS) has facilitated the study of the behavior of insulating materials in low-temperature environments. Surface flashover of low-temperature insulation is one of the main causes of insulation failure in superconducting systems, which seriously restricts the development of superconducting devices. The insulation structure formed by laminating polypropylene (PP) film and kraft paper plays an important role in the insulation system of high temperature superconducting equipment. When a fault occurs during operation, the superconductor will experience a quench condition. Insulation material will withstand high voltage and...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K3/28
CPCC08K3/28C08K2003/282C08K2201/003C08L2203/20C08L23/12
Inventor 杜伯学王明洋韩学涛李一萌侯兆豪李进
Owner TIANJIN UNIV
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