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Preparation method of superhigh temperature filter material

A filter material and ultra-high temperature technology, applied in the field of ultra-high temperature filter material preparation, can solve the problems of unsatisfactory physical and chemical indicators such as high temperature resistance, chemical resistance, structural stability, etc., and achieve shortened drying time, outstanding filtration performance, The effect of improving temperature resistance

Inactive Publication Date: 2013-08-07
昆山万瑞达工业纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of unsatisfactory physical and chemical indicators such as high temperature resistance, chemical resistance, and structural stability in the high-silica fiber filter material made by the existing technology, and to improve the high-silica fiber through the optimization and improvement of the process. Comprehensive performance of the product, expanding the scope of application of the product, providing an ultra-high temperature filter material and its preparation method

Method used

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  • Preparation method of superhigh temperature filter material
  • Preparation method of superhigh temperature filter material
  • Preparation method of superhigh temperature filter material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Put the selected three-component sodium borosilicate glass fiber product (ie glass fiber raw material) into the wire drawing furnace for high temperature melting, the melting temperature is 1420 ° C; The produced high silica fiber is coated with monofilament and passed through a strong cooling device to ensure that the fracture rate of monofilament is within 1%.

[0031] (2) Make part of the glass fiber staple fiber into glass fiber woven fabric.

[0032] (3) Place glass fiber staple fibers and glass fiber woven fabrics (hereinafter collectively referred to as "glass fiber products") in an acid leaching tank for acid leaching treatment. Acid leaching formula: concentrated hydrochloric acid 10wt%, silane coupling Agent 2wt%, the balance of distilled water; constant temperature acid leaching temperature is controlled at 85 ℃, and treated for 1.5 hours. The chemical formula of acid leaching is optimized, and after many tests, it is determined that the coupling agent a...

Embodiment 2

[0043] (1) Put the selected three-component sodium borosilicate glass fiber product into the wire drawing kiln for high-temperature melting, the melting temperature is 1480 ° C; The fiber is monofilament coated and passed through a strong cooling device to ensure that the fracture rate of the monofilament is within 1%.

[0044] (2) Weave part of the glass fiber into glass fiber woven cloth.

[0045] (3) Arrange the glass fiber short fiber and the glass fiber weaving in the acid leaching tank for acid leaching treatment, acid leaching formula: concentrated hydrochloric acid 20wt%, silane coupling agent 5wt%, distilled water balance; constant temperature The acid leaching temperature is controlled at 98°C, and the treatment is 3.5 hours;

[0046] (4) Rinse the acid-leached glass fiber product with warm water to remove residual acid on the surface of the product. The preferred water temperature is 50°C, then soak it in a circulating filter tank, and use flowing warm water to cle...

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Abstract

The invention provides a preparation method of a superhigh temperature filter material. The preparation method comprises the steps of melting glass fiber raw materials at high temperature, and then, drawing the molten glass fiber raw materials to produce high silica fiber; weaving the fiber into a high silica fiber woven fabric; carrying out acid leaching treatment on the high silica fiber and the high silica fiber woven fabric; washing, volatilizing, drying and carrying out high-temperature sintering on a glass fiber product subjected to acid leaching; making the prepared high silica chopped fiber into a felt by taking the high silica fiber woven fabric as a base fabric by using a conventional needling or spunlacing process, wherein the diameter of a monofilament of the prepared high silica chopped fiber is over 6mum; needling or spunlacing high silica chopped yarn on one side of the prepared felt, wherein the diameter of a monofilament of the prepared high silica chopped yarn is smaller than 5mum; and finally, coating a vermiculite and coupling agent high-temperature resistant coating on the surface of a finished spun yarn. The superhigh temperature filter material prepared by using the preparation method can achieve the continuous working temperature of 650-850 DEG C and bear the instant high temperature of 950 DEG C and also has the physiochemical indexes such as high temperature resistance, chemical resistance, stable structure and remarkable filtering property.

Description

technical field [0001] The invention belongs to the field of environmental protection dust removal and filtration, and in particular relates to a preparation method of an ultra-high temperature filter material. Background technique [0002] As an inorganic non-metallic special fiber material, high silica glass fiber has been extensively studied in our country, and its products have been widely used in various industrial fields in our country due to their excellent performance. High-temperature insulation, high-temperature gas dust collection, liquid filtration, metal melting filtration, purification, etc., have very broad application prospects and huge market potential. [0003] High-silica glass fiber has achieved a large number of research results from the research of glass components in the preparation process and post-processing to the development of new varieties, new processes, and new equipment, and the production process is becoming more and more mature. In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20D04H13/00C03C25/66
Inventor 宋朋泽鞠东升
Owner 昆山万瑞达工业纺织品有限公司
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