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Manufacture process of low-flourine mica tape

A manufacturing process, mica tape technology, applied in the direction of mica, cable/conductor manufacturing, conductors, etc., can solve the problems of low tensile strength, gluing penetration time, unstable air permeability, low compressive strength, etc., to prevent electrical conduction , reduce the probability of being burned out, and reduce the effect of calcination time

Active Publication Date: 2015-11-18
PINGJIANG XINGKE MICA PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the technical problems of mica paper such as low compressive strength, low tensile strength, unstable gluing penetration time and air permeability, and provides a mica paper with high compressive strength, good tensile strength, gluing penetration time and air permeability. Stable mica paper production method

Method used

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  • Manufacture process of low-flourine mica tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) The selection of raw materials, select natural mica flakes with flat flakes and large diameters from the mica raw material pile;

[0050] 2) Medium-temperature calcination, the selected natural mica is sent to a medium-temperature flow converter at 600°C for calcination for 5 minutes to preheat;

[0051] 3) Defluorination process, sending the preheated mica to a high-temperature flow furnace at 900°C for calcination for 25 minutes to remove fluoride;

[0052] 4) Low-temperature calcination, the defluoridated mica is then calcined at 400°C for 10 minutes to cool down;

[0053] 5) Cooling, washing and foaming, put the cooled mica in the equipment for cooling, washing and foaming;

[0054] 6) pulping, the mica obtained in step 5) is mechanically pulped by pulping equipment;

[0055] 7) Copying, making mica pulp into low-fluorine mica paper;

[0056] 8) Inspection, test the fluorine content of the mica paper that has been made, and the qualified standard of the inspecti...

Embodiment 2

[0064] 1) The selection of raw materials, select natural mica flakes with flat flakes and large diameters from the mica raw material pile;

[0065] 2) Medium-temperature calcination, the selected natural mica is sent to a medium-temperature flow converter at 750°C for calcination for 10 minutes to preheat;

[0066] 3) In the defluorination process, the preheated mica is sent to a high-temperature flow furnace at 810°C for calcination for 15 minutes to defluoride;

[0067] 4) Low-temperature calcination, the defluoridated mica is then calcined at 600°C for 5 minutes to cool down;

[0068] 5) Cooling, washing and foaming, put the cooled mica in the equipment for cooling, washing and foaming;

[0069] 6) pulping, the mica obtained in step 5) is mechanically pulped by pulping equipment;

[0070] 7) Copying, making mica pulp into low-fluorine mica paper;

[0071] 8) Inspection, test the fluorine content of the mica paper that has been made, and the qualified standard of the insp...

Embodiment 3

[0079] 1) The selection of raw materials, select natural mica flakes with flat flakes and large diameters from the mica raw material pile;

[0080] 2) Medium-temperature calcination, the selected natural mica is sent to a medium-temperature flow converter at 700°C for 8 minutes of preheating;

[0081] 3) In the process of defluoridation, the preheated mica is sent to a high-temperature flow furnace at 840°C for calcination for 20 minutes to remove fluoride;

[0082] 4) Calcining at low temperature, the defluoridated mica is then calcined at 500°C for 7 minutes to cool down;

[0083] 5) Cooling, washing and foaming, put the cooled mica in the equipment for cooling, washing and foaming;

[0084] 6) pulping, the mica obtained in step 5) is mechanically pulped by pulping equipment;

[0085] 7) Copying, making mica pulp into low-fluorine mica paper;

[0086] 8) Inspection, test the fluorine content of the mica paper that has been made, and the qualified standard of the inspectio...

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Abstract

The present invention relates to the mica tape manufacturing field, and especially relates to a manufacture process of low-flourine mica tapes. The manufacture process comprises the steps of coating brushing, mixed layer manufacturing, drying, cooling and tape cutting, wherein mica paper used in mixed layer manufacturing is tested low-flourine mica paper. With adoption of the manufacturing process provided by the present invention, a fluorine content of the manufactured mica tape is greatly reduced, requirements for environment protection are met, harms to human bodies are reduced, and the amount of release of fluorine especially in high-voltage cable application is lowered.

Description

technical field [0001] The invention relates to the field of mica tape manufacturing, in particular to a manufacturing process of low-fluorine mica tape. Background technique [0002] Due to its excellent performance, mica paper has excellent performance in heat resistance and insulation, so it has a wide range of uses, mainly used in wires, cables, military industry, aerospace and other fields. [0003] Mica paper generally needs to be made into mica tape before it can be used in the field of wires and cables. Mica paper has no tension, but the outer covering of cables and wires needs a certain tension. Therefore, simply cutting mica paper into mica tapes cannot meet the requirements. To meet the needs of the cable industry, the existing glass fibers are generally used to form a layered structure, which can meet the tension requirements of the outer cladding of the cable. [0004] Natural mica (molecular formula KAl2(AlSi3O10)(OHF)) is a non-metallic mineral, which contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/04H01B7/17H01B13/00H01B19/00B32B19/06
Inventor 佘固卢吴南祥朱为豪
Owner PINGJIANG XINGKE MICA PRODS
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