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Continuous alumina fiber, preparation method thereof and thermal insulation protective fabric

A technology of alumina fiber and fabric, which is applied in the direction of inorganic raw material artificial filament, fabric, textile, etc., and can solve problems such as uneven sizing and decreased fabric integrity

Pending Publication Date: 2021-12-31
国装新材料技术(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, alumina fibers are mainly chopped fibers and composite material components. For example, the application number is CN02802459.1, and the Chinese invention patent named alumina fiber aggregates and its manufacturing method. In the preparation of fabrics, short fibers will exist Problems such as uneven sizing, loss of fabric integrity, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Continuous alumina fiber, preparation method thereof and thermal insulation protective fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add aluminum chloride and deionized water to the reaction kettle to dissolve, heat to 70°C, then add elemental aluminum to the reaction kettle, after complete hydrolysis reaction, add polyvinylpyrrolidone, evaporate and concentrate at 60-100°C for 24 hours to reach Adjust the viscosity of silk to obtain sol-gel. Using dry spinning, the sol-gel is assisted by 5-7Mpa high-pressure air to pass through the spinning channel to form filaments. After calcined at 1100-1400°C, alumina fibers are formed, and the drawing speed is 15-20mm / s. The pressure of the high-pressure air is determined according to the viscosity of the sol-gel. The mass ratio of aluminum chloride to elemental aluminum is 1:1-1:1.5

[0025] The above-mentioned continuous alumina fiber can be woven by the existing weaving method to obtain the continuous alumina fiber fabric. Preferably, the continuous alumina fiber fabric is woven by the continuous alumina fiber in a plain weave orthogonal manner, and the yi...

Embodiment 2

[0028] Add aluminum nitrate to deionized water to dissolve in the reactor, heat to 70°C, and then add elemental aluminum and aluminum chloride. After the complete hydrolysis reaction, add polyvinyl alcohol as an auxiliary agent, evaporate and concentrate at 60-100°C for 24 hours to adjust the silk viscosity to obtain sol-gel. Using dry spinning, the sol-gel is assisted by 5-7Mpa high-pressure air to pass through the spinning channel to form filaments. After calcined at 1100-1400°C, alumina fibers are formed, and the drawing speed is 15-20mm / s. The pressure of the high-pressure air is determined according to the viscosity of the sol-gel. The mass ratio of aluminum nitrate, aluminum chloride and elemental aluminum is 2:1:3.

[0029] The above-mentioned continuous alumina fiber can be woven by the existing weaving method to obtain the continuous alumina fiber fabric. Preferably, the continuous alumina fiber fabric is woven by the continuous alumina fiber in a plain weave orthog...

Embodiment 3

[0032] Dissolve aluminum chloride with deionized water in the reactor, heat to 70°C, and add aluminum isopropoxide. Add elemental aluminum after the hydrolysis reaction, add additive polyethylene glycol, and evaporate and concentrate at 60-100°C for 24 hours to adjust the silk viscosity to obtain sol-gel. The sol-gel is assisted by 5-7Mpa high-pressure air to pass through the spinning channel to form filaments. After calcined at 1100-1400°C, alumina fibers are formed, and the drawing speed is 15-20mm / s. The pressure of the high-pressure air is determined according to the viscosity of the continuous alumina crystal fiber. The mass ratio of aluminum isopropoxide, aluminum chloride and elemental aluminum is 1:2:3.

[0033] The above-mentioned continuous alumina fiber can be woven by the existing weaving method to obtain the continuous alumina fiber fabric. Preferably, the continuous alumina fiber fabric is woven by the continuous alumina fiber in a plain weave orthogonal manner...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a preparation method of a continuous alumina fiber. The preparation method comprises the following steps of preparing a continuous alumina crystal fiber by adopting a sol-gel method; boosting the continuous alumina crystal fiber by using high-pressure air and forming an alumina fiber precursor through a spinning duct, wherein the high pressure is 5-7Mpa; and enabling the alumina fiber precursor to be calcined at a high temperature of 1100-1400 DEG C, and to be drafted, wound and rolled to form continuous alumina fiber long fibers, wherein the drafting rate is 15-20 mm / s. The invention also provides a continuous alumina fiber fabric prepared by the preparation method.

Description

technical field [0001] The disclosure relates to the technical field of textile raw materials, in particular to a continuous alumina fiber, a preparation method thereof, and a heat-insulating protective fabric. Background technique [0002] At present, alumina fibers are mainly chopped fibers and composite material components. For example, the application number is CN02802459.1, and the Chinese invention patent named alumina fiber aggregates and its manufacturing method. In the preparation of fabrics, short fibers will exist. Uneven sizing, loss of fabric integrity, etc. Contents of the invention [0003] In order to solve at least one of the above technical problems, the present disclosure provides a continuous alumina fiber, a preparation method thereof, and a thermal insulation protection fabric. [0004] According to one aspect of the present disclosure, a method for preparing continuous alumina fibers includes: [0005] Using aluminum-containing inorganic substances...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D01F9/08D03D15/242
CPCD01F9/08D03D15/242
Inventor 刘点马小民马晓东张春苏赵纪周
Owner 国装新材料技术(江苏)有限公司