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A kind of pure polyphenylene sulfide fiber high-grade electrical insulating paper and its preparation method

An electrical insulating paper, high-grade technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of thick insulating paper, many production processes, and high energy consumption, saving land and workshops, and reducing energy consumption. , reduce the effect of the process flow

Active Publication Date: 2016-03-30
SICHUAN TEXTILE SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has many production processes, high energy consumption, and the insulating paper made is thick and has low strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Use a spinneret with 500 holes, the diameter of the spinneret hole is 0.18mm, the high temperature and high pressure air pressure is 0.5MPa, the temperature is 265°C, and the fineness of spinning polyphenylene sulfide is 0.01dtex.

[0028] (2) Web forming: the distance between the spinning extrusion die and the negative pressure netting curtain is 20cm, the speed of the coagulation net curtain is 5m / min, and the paving is 42g / m 2 fiber web.

[0029] (3) Paper formation: The fiber web is reinforced into paper by high temperature and high pressure treatment for a period of time. The temperature is 285°C, the pressure is 0.5MPa, and the high temperature is pressurized for 30s.

[0030] The insulating paper obtained through the implementation of Example 1 has a thickness of 0.03mm and a grammage of 41g / m 2 , the breakdown voltage is 12KV, and the volume resistivity is 10 16 Ω·cm, the dielectric strength is 15Kv / mm, and the dielectric constant is 1.6.

Embodiment 2

[0032] (1) Use a spinneret with 600 holes, the diameter of the spinneret hole is 0.18mm, the pressure of the high temperature and high pressure airflow is 0.9MPa, the temperature is 265°C, and the fineness of spinning polyphenylene sulfide is 0.03dtex.

[0033] (2) Web forming: The distance between the spinning extrusion die and the negative pressure netting curtain is 23cm, the speed of the coagulation net curtain is 75m / min, and the paving is 51g / m 2 fiber web.

[0034] (3) Paper formation: The fiber web is reinforced into paper by high temperature and high pressure treatment for a period of time. The temperature is 295°C, the pressure is 0.8MPa, and the high temperature is pressed for 30 seconds.

[0035] The insulating paper obtained through the implementation of Example 2 has a thickness of 0.23mm and a grammage of 49g / m 2 , the breakdown voltage is 13KV, and the volume resistivity is 10 16 Ω·cm, the dielectric strength is 15Kv / mm, and the dielectric constant is 1.8.

Embodiment 3

[0037] (1) Choose a spinneret with 1200 holes, the diameter of the spinneret hole is 0.22mm, the high temperature and high pressure air pressure is 1.8MPa, the temperature is 275°C, and the fineness of spinning polyphenylene sulfide is 0.07dtex.

[0038] (2) Web forming: the distance between the spinneret extrusion die and the negative pressure web forming curtain is 30cm, the speed of the coagulation net curtain is 80m / min, and the paving is 113g / m 2 fiber web.

[0039] (3) Paper formation: The fiber web is reinforced into paper by high temperature and high pressure treatment for a period of time. The temperature is 305°C, the pressure is 6.3MPa, and the high temperature is pressed for 90 seconds.

[0040] The insulating paper obtained through the implementation of Example 2 has a thickness of 0.34mm and a grammage of 108g / m 2 , the breakdown voltage is 15KV, and the volume resistivity is 10 16 Ω·cm, the dielectric strength is 19Kv / mm, and the dielectric constant is 3.6.

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Abstract

The invention discloses a pure polyphenylene sulfide (PPS) fiber high class electrical insulating paper and preparation method of the pure PPS fiber high class electrical insulating paper. PPS superfine fibers are prepared by adopting the method of combining melt spinning and high-temperature high-pressure air flow injection blowing net forming, are cooled by negative pressure cold-air and then agglutinated to form a net, and the fiber net finally forms pure PPS fiber high class electrical insulating paper after being processed in a high-temperature pressurization mode in a certain time. A technological process is short, no pollutant is generated in a productive process, energy consumption is low, prepared insulating paper has good insulativity, is high in temperature resistance grade, and has good fire resistance, chemical properties and mechanical properties.

Description

technical field [0001] The invention relates to an electric insulating paper and a preparation method thereof, belonging to the papermaking technical field of synthetic fiber paper. Background technique [0002] As an insulating material for electrical equipment, insulating paper has a long history. It plays a very important role and has a wide range of uses in electrical equipment such as motors, transformers, cables, and capacitors. The performance of insulating paper also directly affects electrical and electrical equipment. high operational reliability and long service life. Especially in recent years, with the rapid development of my country's electric power, electrical and other industries, the requirements for the grade of insulating paper are getting higher and higher. Not only the temperature resistance requirements have been greatly improved, but the requirements for the mechanical properties of the paper are also particularly prominent. In addition, with the glob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/44D04H1/54
Inventor 王桦陈丽萍覃俊何勇冯颖桢
Owner SICHUAN TEXTILE SCI RES INST
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