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High-temperature-resistant biologically-soluble ceramic fiber and preparation method thereof

A technology of ceramic fiber and high temperature resistance, which is applied in the field of ceramic fiber, which can solve the problems of fiber performance, high melting temperature of raw materials, and difficult operation, etc., and achieve the effect of low raw material price, high service temperature and high mechanical strength

Inactive Publication Date: 2014-02-26
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the melting temperature of the raw materials is high, the operation of the fiber forming process is difficult, and the performance of the fiber needs to be improved, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high temperature resistant biosoluble ceramic fiber and a preparation method thereof. First use 40~54wt% quartz sand powder, 20~30wt% wollastonite powder, 20~30wt% talcum powder and 5~15wt% industrial soda ash as raw materials, and mix them evenly.

[0034] Then put the uniformly mixed raw materials in a resistance furnace, heat up to 1450~1550°C, and after melting, blow them into fibers with 0.2~0.4MPa compressed air to obtain calcium magnesium silicon ceramic fiber cotton.

[0035] Put the calcium-magnesium-silicon ceramic fiber cotton in hydrochloric acid with a concentration of 0.5~1.5mol / L, raise the temperature to 70~80°C, and keep it warm for 3~4 hours; wash the calcium-magnesium-silicon ceramic fiber cotton after acid treatment until it is washed The pH value of the waste liquid is 6~7.

[0036] Finally, the calcium-magnesium-silicon ceramic fiber cotton obtained by washing with water is heat-treated at 800-900° C. for 2-4 hours in a nitrogen atmosphere to ob...

Embodiment 2

[0039] A high temperature resistant biosoluble ceramic fiber and a preparation method thereof. First use 50~60wt% quartz sand powder, 15~25wt% wollastonite powder, 14~20wt% talcum powder and 10~20wt% industrial soda ash as raw materials, and mix them evenly.

[0040]Then put the uniformly mixed raw materials in an electric arc furnace, heat up to 1500~1600°C, and after melting, blow them into fibers with 0.3~0.5MPa compressed air to obtain calcium magnesium silicon ceramic fiber cotton.

[0041] Put the calcium-magnesium-silicon ceramic fiber cotton in nitric acid with a concentration of 1-2mol / L, raise the temperature to 75-85°C, and keep it warm for 3-4 hours; wash the calcium-magnesium-silicon ceramic fiber cotton after acid treatment until the washing waste The pH of the solution is 6-7.

[0042] Finally, the calcium-magnesium-silicon ceramic fiber cotton obtained by washing with water is heat-treated at 850-950° C. for 3-4 hours in a nitrogen atmosphere to obtain high-te...

Embodiment 3

[0045] A high temperature resistant biosoluble ceramic fiber and a preparation method thereof. First, 60~70wt% quartz sand powder, 10~15wt% wollastonite powder, 10~15wt% talcum powder and 9~15wt% industrial soda ash are used as raw materials and mixed evenly.

[0046] Then put the uniformly mixed raw materials in a resistance furnace, raise the temperature to 1600~1700°C, and directly spin them into fibers after melting to obtain calcium-magnesium-silicon ceramic fiber cotton.

[0047] Put the calcium-magnesium-silicon ceramic fiber cotton into hydrochloric acid with a concentration of 2-3mol / L, raise the temperature to 80-90°C, and keep it warm for 4-5 hours; wash the calcium-magnesium-silicon ceramic fiber cotton after acid treatment until the washing waste The pH of the solution is 6-7.

[0048] Finally, the calcium-magnesium-silicon ceramic fiber cotton obtained by washing with water is heat-treated at 900-1050° C. for 4-6 hours in a nitrogen atmosphere to obtain high-tem...

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Abstract

The invention relates to a high-temperature biologically-soluble ceramic fiber and a preparation method thereof. According to a technical scheme, the method comprises the following steps of: uniformly mixing 10-30 percent by weight of wollastonite powder or 15-40 percent by weight of dolomite powder, 10-30 percent by weight of talc powder or 8-30 percent by weight of forsterite powder, 40-70 percent by weight of quartz sand powder and 5-20 percent by weight of industrial sodium carbonate serving as raw materials; putting a mixture into a furnace, heating to 1,450-1,700 DEG C, melting, forming a fiber by blowing with compressed air of 0.2-0.5 MPa or forming a fiber by directly performing thread throwing to obtain calcium-magnesium-silicon ceramic cellucotton, putting into nitric acid or hydrochloric acid of which the concentration is 0.5-3 mol / L, heating to 70-90 DEG C, preserving heat for 3-5 hours, and washing with water till the pH value of water washing waste water is 6-7; and thermally treating under a nitrogen atmosphere at the temperature of 800-1,050 DEG C for 2-6 hours to obtain the high-temperature biologically-soluble ceramic fiber. The high-temperature biologically-soluble ceramic fiber has the characteristics of low melting temperature, easiness for operating a fiber forming process, low production cost and the like; and a product has high using temperature and high biological degradation rate.

Description

technical field [0001] The invention belongs to the technical field of ceramic fibers. In particular, it relates to a high-temperature resistant biosoluble ceramic fiber and a preparation method thereof. Background technique [0002] The main chemical composition of traditional aluminum silicate ceramic fiber is mainly silica and alumina. The fine dust particles produced during the production, use, transportation and disassembly of this fiber are absorbed by the human body and enter the respiratory system. It is difficult to be degraded by human body fluids, and the deposition of its particles in the human body will induce inflammation of the respiratory system and even cancer. Therefore, the International Association for Research on Cancer classifies aluminum silicate ceramic fibers as possible carcinogens according to their hazards to human health. Correspondingly, the substitute of aluminum silicate ceramic fiber - biosoluble ceramic fiber has received great attention f...

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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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/622
Inventor 王玺堂刘浩王周福张保国
Owner WUHAN UNIV OF SCI & TECH
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