Infra-red devitrified glass fibre and preparation method thereof

A glass fiber and crystallite technology, applied in the field of infrared glass-ceramic fiber and its preparation, can solve problems such as difficulty in control, affecting infrared emission ability, and the proportion of infrared ceramic particles should not be too large, so as to achieve improved spinnability and good industrialization The effect on production value

Inactive Publication Date: 2010-09-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this type of infrared fiber are: (1) due to the discontinuity of the ceramic powder, it is easy to break and block the silk holes during the spinning process, making spinning difficult; (2) the proportion of the added infrared ceramic particles cannot exceed Large (generally less than 20%), if it is too large, it will affect the strength of the textile, if it is too small, it will affect the infrared emission ability
The disadvantage is that the subsequent treatment process of this fiber is more complicated, difficult to control, and the infrared emission efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides an infrared glass-ceramic fiber and a preparation method thereof. The glass-ceramic fiber has high infrared emission efficiency, excellent flexibility, good spinnability and good health care effect.

[0017] Composition of infrared glass-ceramic fiber

[0018] MgO-Al with better infrared emission performance 2 o 3 -SiO 2 It is prepared from the bluestone ceramic formula as the main material, adding flux, transition metal oxides and additives, wherein the main material accounts for 60-80 wt% of the total weight; the transition metal oxide accounts for 11%-25 wt% of the total weight; The flux clarifier accounts for 7-10 wt% of the total weight and the additive accounts for 2-5 wt% of the total weight.

[0019] The following three issues should be considered in the composition design: (1) Try to make the glass easier to melt; (2) Easy to draw at a certain temperature; (3) Precipitate nano crystallites through temperature control during the drawing...

Embodiment 1

[0030] Select 70wt.% of the main ingredients of the above-mentioned ratio components, 8wt.% flux clarifying agent B 2 o 3 and CeO 2 (weight ratio, 3:1), 20wt.% transition metal oxide Fe 2 o 3, MnO and CuO (weight ratio, Fe 2 o 3 :MnO:CuO=2:1:1) and 2wt.% additive calcite (CaCO 3 ), pass the raw materials through a 20-mesh sieve, accurately weigh them and mix them evenly in a mixer, then put the mixture into a high-temperature furnace and melt it at 1500°C to obtain a glass melt without bubbles, and then heat it at 1250~ Spinning at 1400°C, control the winding speed of the spinning machine to 700m / min, during the spinning process, the fiber passes through a furnace chamber at 850-900°C, so as to form micro-nanocrystalline cordierite and MnFe in the glass fiber 2 o 4 、CuFe 2 o 4 , CuMn 2 o 4 , MgFe 2 o 4 and other ceramic crystals. The drawn glass fiber is passed through a polymer tank to produce a polymer-wrapped infrared glass-ceramic fiber.

[0031] The fiber c...

Embodiment 2

[0033] 73wt.% of the main ingredients of the above proportions, 8wt.% fluxing clarifier B 2 o 3 , 16wt.% transition metal oxide Fe 2 o 3 , and additive soda ash 3.0wt.%, uniformly mixed in a mixer, then put the mixture into a high-temperature furnace, and melt at 1480°C. The glass melt is transported to the wire drawing machine, and then drawn at 1250-1400°C, the winding speed of the wire drawing machine is controlled to be 600m / min. During the drawing process, the fiber passes through the furnace chamber with a temperature range of 850-900°C , forming micro-nanocrystalline cordierite and MgFe in glass fibers 2 o 4 and other ceramic crystals. The formed infrared glass-ceramic fiber is blended with organic fiber or natural fiber into low elastic filament.

[0034] The fiber can be processed into various knitted and woven fabrics by conventional techniques.

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PUM

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Abstract

The invention discloses infrared microcrystal glass fiber and a preparation method, belonging to the infrared fiber preparation technical field. The infrared microcrystal glass fiber has the comprehensive advantages of high infrared emission efficiency, good flexibility, strong spinnability and good thermal stability. The infrared emission microcrystalline glass fiber uses MgO-Al2O3-SiO2 serial cordierite ceramic formula as main material and is prepared through adding fluxing clarifier, transition metal oxide and additive. Through the melting and the clarification, the fiber is proved with perfect fiber-pulling formability and high infrared emissivity. And the microcrystalline glass fiber with high infrared emissivity is prepared. In the normal temperature environment, the infrared emission microcrystalline glass fiber has the advantages of higher strong toughness and good spinnability and can be widely applied to the textile and the braiding. The fiber can be made into insulation clothing material and can be applied to fields of mechanics, medical treatment, health care, etc.

Description

technical field [0001] The invention belongs to the technical field of infrared fiber preparation, and in particular relates to an infrared glass-ceramic fiber with excellent comprehensive properties such as high infrared emission efficiency, good flexibility, strong spinnability and good thermal stability, and a preparation method thereof. Background technique [0002] There are two main types of infrared fibers widely used at present: the first type is to add infrared ceramic powder with a smaller particle diameter to the fiber-forming polymer. The disadvantages of this type of infrared fiber are: (1) due to the discontinuity of the ceramic powder, it is easy to break and block the silk holes during the spinning process, making spinning difficult; (2) the proportion of the added infrared ceramic particles cannot exceed Large (generally less than 20%), if it is too large, it will affect the strength of the textile, if it is too small, it will affect the infrared emission ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C13/04C03B37/01
CPCC03C4/10C03C13/008
Inventor 曹建尉梁开明李要辉
Owner TSINGHUA UNIV
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