High temperature-resistant ultrafine quartz glass fiber cotton and preparation method thereof

A technology of quartz glass fiber and quartz glass, which is applied in the field of high-temperature-resistant ultra-fine quartz glass fiber cotton and its preparation, and can solve the problem that ordinary glass fiber cotton cannot be used in high-temperature use environments, special use environments that cannot be applied to high temperatures, and the diameter of monofilaments. Uniformity is difficult to control and other problems, to achieve the effect of improving product use effect, good product quality, and easier control of uniformity

Active Publication Date: 2015-12-09
武汉鑫友泰光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use temperature of ordinary glass fiber cotton is below 600°C, so it cannot be applied to some special use environments with high temperature.
[0003] In order to solve the problem that ordinary glass fiber wool cannot be used in high-temperature environments, the current substitute product is a kind of quartz glass wool. It is made by flame secondary melting, which has better heat resistance than ordinary glass fiber cotton
[0004] However, in the actual use process, it is found that the quartz glass wool drawn by two-stage melting method has the problem that the diameter of the single filament is relatively thick and the diameter uniformity is difficult to control during the production process, so that the pores of the produced quartz glass wool The density is relatively loose, and the thermal insulation performance is not ideal, which affects the use effect

Method used

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  • High temperature-resistant ultrafine quartz glass fiber cotton and preparation method thereof

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Effect test

preparation example Construction

[0025] see figure 1 As shown, the present invention provides a method for preparing high-temperature-resistant ultrafine quartz glass fiber cotton. The preparation device required for the preparation method includes a moving clamping rod device, an electric heating device, a primary burner device, a secondary burner device, a primary drum, Secondary drum, quartz glass wire divider and special quartz glass rod tool, the preparation method comprises the following steps:

[0026] S1: Prepare raw materials: select 3 to 9 quartz glass rods with a diameter of 1.6-2.0mm and a silicon dioxide content ≥ 99.95%; put all the quartz glass rods into the mobile clamping rod device, and turn to S2.

[0027] During specific operation, the number of quartz glass rods is preferably 6; the diameter of the quartz glass rods is preferably 1.85mm.

[0028] S2: Debugging device: Turn on the electric heating device to raise the temperature to 1800-2000°C; turn on the primary burner device, and adjus...

Embodiment 1

[0038] Embodiment 1 provides a kind of preparation method of high temperature resistant ultra-fine quartz glass fiber wool, comprising the following steps:

[0039] S1: Select 3 quartz glass rods with a diameter of 1.6mm and a silica content ≥ 99.95%; put all the quartz glass rods together into the mobile clamping rod device, and turn to S2;

[0040]S2: Turn on the electric heating device to raise its temperature to 1800°C; turn on the primary burner device, adjust the flame temperature of the primary burner device to 1900°C by adjusting the natural gas valve and oxygen valve; turn on the secondary burner device, Gas valve, oxygen valve, adjust the flame temperature of the secondary burner device to 1900°C, adjust the jet flow speed to 200m / s, and turn to S3;

[0041] S3: Turn on the moving rod clamping device and adjust its linear speed to 7mm / min; the moving rod clamping device drives all the quartz glass rods to pass through the electric heating device at 1800°C at a consta...

Embodiment 2

[0046] Embodiment 2 provides a kind of preparation method of high temperature resistant ultrafine quartz glass fiber wool, and its basic steps are identical with embodiment 1, and difference is:

[0047] The number of quartz glass rods in S1 is 9, and the diameter is 2.0mm; the specific steps of S2 are: turn on the electric heating device, make the temperature rise to 2000°C, adjust the flame temperature of the primary burner device to 2300°C, and turn on the secondary The flame temperature of the burner device is adjusted to 2300°C, and the jet airflow speed is adjusted to 250m / s; the linear speed of the moving rod clamping device in S3 is 10mm / min, and the linear speed of the primary roller is 40mm / min, and the drawn quartz glass thin rod The diameter is 1.0mm; the linear speed of the secondary roller in S4 is 6200mm / min, and the diameter of the drawn quartz glass filament is 80μm; the diameter of the quartz glass fiber wool in S5 is 3μm.

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Abstract

The invention discloses a high temperature-resistant ultrafine quartz glass fiber cotton and a preparation method thereof, and belongs to the field of quartz glass fiber cotton preparation. The preparation method comprises following steps: three to nine quartz glass rods with a diameter ranging from 1.6 to 2.0mm and silicon dioxide content of 99.95% or higher are selected; the quartz glass rods are heated to be molten using an electric heating device, and are made into quartz glass thin rods with a diameter ranging from 0.8 to 1.0mm via drawing of a primary roller at a linear speed ranging from 25 to 40mm/min; the quartz glass thin rods are heated to be molten in a primary fire head device at 1900 to 2300 DEG C, and are made into quartz glass silk with a diameter ranging from 50 to 80<mu>m via drawing of a secondary roller at a linear speed ranging from 6000 to 16000mm/min; and the quartz glass silk is made into the quartz glass fiber cotton with a diameter ranging from 1 to 3<mu>m via blowing in a secondary fire head device at 1900 to 2300 DEG C at a jet stream speed ranging from 200 to 400m/s. The high temperature-resistant ultrafine quartz glass fiber cotton is capable of resisting super high temperature as high as 1100 DEG C; signal silk diameter is low; diameter uniformity is better; and product quality is high.

Description

technical field [0001] The invention relates to the technical field of preparation of quartz glass fiber cotton, in particular to a high-temperature resistant ultra-fine quartz glass fiber cotton and a preparation method thereof. Background technique [0002] Ordinary glass fiber cotton has a fiber length of 50-150 mm and a fiber diameter of 12 μm. It is white in appearance and fluffy in shape, similar to cotton wool, so it is also called short cotton. Ordinary glass fiber wool is composed of interlaced glass fibers to form a porous structure. It has the advantages of light weight (the apparent density is only half of the apparent density of mineral wool), good sound absorption performance, high filtration efficiency, and non-combustibility. It is widely used in national defense , petrochemical, construction, metallurgy, refrigeration, transportation and other industries. It is an excellent thermal insulation, heat insulation, cold insulation and sound-absorbing material for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/005
Inventor 陈宜平刘涛刘正楠夏新艾春生
Owner 武汉鑫友泰光电科技有限公司
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