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Industrial-grade aluminum oxide continuous fiber winding and sintering device and technological method

A technology of sintering device and process method, which is applied in the direction of furnace, furnace type, lighting and heating equipment, etc. It can solve the problems affecting the continuity of alumina fiber, reducing the quality of fiber forming, and the decline of fiber mechanical properties, so as to ensure continuous production , reduce fiber breakage and reasonable heating rate

Pending Publication Date: 2021-03-05
上海榕融新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, during the sintering process of alumina fiber, due to the presence of a large amount of liquid phase in the gel skeleton, shrinkage occurs during drying, and the shrinkage rate can reach more than 30%, which is easy to cause product cracking and fiber breakage, resulting in a decrease in the mechanical properties of the fiber. Affect the continuity of alumina fiber and reduce the quality of fiber forming
The winding surface of the ordinary winding sintering device cannot reduce the winding diameter correspondingly with the shrinkage of the alumina fiber, causing the alumina fiber to break due to excessive tension

Method used

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  • Industrial-grade aluminum oxide continuous fiber winding and sintering device and technological method
  • Industrial-grade aluminum oxide continuous fiber winding and sintering device and technological method
  • Industrial-grade aluminum oxide continuous fiber winding and sintering device and technological method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A winding sintering device (structure such as figure 1 ), the winding sintering device includes two parts, one part is a cylinder 1 with a uniform through-hole in the cylinder wall; the other part is a cylinder 2 with a uniform grid in the cylinder wall, and a cylinder 2 with a uniform grid in the cylinder wall The cylinder 2 is nested outside the cylinder 1 whose wall contains uniform through holes.

[0034] Further, the grid in the cylinder 2 with a uniform grid on the cylinder wall is a multi-layer structure, from the outside to the inside are respectively a sponge layer, a polypropylene PP layer, a polyamide PA layer, a polyimide PI layer and an aromatic Lun layer, the thickness ratio of the five layers is 4:6:10:9:3.

[0035] Further, the multilayer structure of the grid is bonded together by an adhesive, and the preparation method of the grid is to coat the polypropylene PP resin on the sponge layer and cure it; then coat the polyamide PA resin and cure it. ; Co...

Embodiment 2

[0044] A winding and sintering process for industrial-grade alumina continuous fibers, the method is to use the winding and sintering device described in Example 1, specifically:

[0045] The cylinder wall contains a cylinder with uniform through holes 1 ( figure 2 ) has a length of 400mm, a radius of 100mm, a through-hole radius of 5mm, and a distance between two rows of through-holes of 10mm.

[0046] The cylinder wall contains a cylinder with a uniform grid 2 ( image 3 ) grid width is 10mm, the gap between two grids is 15mm, and the quantity is 24; the grid height is 32mm, the height of sponge is 4mm, the height of polypropylene is 6mm, and the height of polyamide is 10mm. The imide has a height of 9 mm and the polyurethane foam has a height of 5 mm.

[0047] Spread the precursor fibers (industrial grade alumina continuous fibers) prepared by the sol-gel method evenly on the surface of the cylinder 2 with a uniform grid on the cylinder wall, and put the whole winding an...

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Abstract

The invention discloses an industrial-grade aluminum oxide continuous fiber winding and sintering device and a technological method, and belongs to the field of aluminum oxide spinning equipment. Thesintering device comprises two parts, the winding and sintering device comprises two parts: one part is a cylinder of which the cylinder wall is provided with uniform through holes, and the other partis a cylinder of which the cylindrical wall contains uniform grids, wherein the grids are of a multi-layer structure and comprise a sponge layer, a polypropylene PP layer, a polyamide PA layer, a polyimide PI layer and an aramid fiber layer from outside to inside; the thickness ratio of the five layers is 4:6:10:9:3; and the cylinder with the uniform grids on the cylinder wall is embedded outsidethe cylinder with the uniform through holes in the cylinder wall. According to the aluminum oxide continuous fiber winding and sintering device, it can be guaranteed that when aluminum oxide fibers are sintered, the situation that during fiber shrinkage, the sintering device cannot shrinks and changes accordingly, so that yarn breaks is avoided.

Description

technical field [0001] The invention relates to an industrial-grade alumina continuous fiber winding and sintering device and a process method, belonging to the field of alumina spinning equipment. Background technique [0002] Alumina fiber is a polycrystalline inorganic fiber whose main component is alumina, and the main component is Al 2 o 3 , and some also contain a small amount of SiO 2 and B 2 o 3 and other metal oxides. The heat resistance of alumina fiber is better than some other fibers. It can withstand ultra-high temperature of 1450 ° C ~ 1600 ° C. It has high tensile strength, good elastic modulus, good electrical insulation performance, and good chemical stability. It also has excellent characteristics such as low thermal conductivity and thermal expansion coefficient, and good thermal shock resistance. Alumina continuous fibers are usually used as structural reinforcement materials to prepare composite materials. Composite materials have been widely used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D10/02F27B21/00
CPCD01D10/02F27B21/00
Inventor 关克田孙树人房海燕
Owner 上海榕融新材料科技有限公司