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Alkali-free glass fiber having improved property, and preparation method thereof

An alkali-free glass fiber and performance technology, applied in glass manufacturing equipment, glass furnace equipment, glass production, etc., can solve the problems of high tonnage raw material cost, damage to the natural environment, and high cost ratio, and improve elastic modulus and resistance. Sintering performance, avoiding high cost, and improving the elastic modulus

Inactive Publication Date: 2017-07-14
JIANGSU JIUDING NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching, existing documents disclose a kind of alkali-free glass fiber, which is made of the following components by weight: SiO 2 :55.2%; B 2 o 3 : 7.3%; Al 2 o 3 : 14.8%; CaO: 18.4%; MgO: 3.2%; R 2 O=K 2 O+Na 2 O: 0.5%; F 2 :0.3%, Fe 2 o 3 :0.3%, the advantages of the alkali-free glass fiber prepared by this formula are good mechanical properties, the tensile strength of the fiber reaches 2200-2350MPa, the tensile modulus of elasticity reaches 72-73MPa, and the sintering temperature can reach 600-650℃, However, due to the relatively high boron content in the formula of the alkali-free glass fiber, a large amount of boron will be discharged into the atmosphere during the melting process, causing boron pollution, destroying the natural environment, and causing waste of resources; at the same time, the formula's The cost of boron-containing raw materials in the cost of alkali-free glass fiber raw materials is relatively high, which makes the cost of tonnage raw materials very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]The present embodiment has the composition and weight percent of the non-alkali glass fiber of improving performance to be: SiO 2 :56%; B 2 o 3 : 4.5%; Al 2 o 3 : 15%; CaO: 19%; MgO: 3.5%; R 2 O=K 2 O+Na 2 O: 0.8%; TiO 2 :0.2% and Fe 2 o 3 +ZnO+ZrO 2 +Cr 2 o 3 :1%.

[0024] The non-alkali glass fiber with improved performance of the above components is made by the following process, specifically as follows:

[0025] (1) Preparation of raw materials: Take 57.41g of pyrophyllite, 4.04g of albite, 15.07g of dolomite, 19.67g of limestone, 12.33g of boronite, 14.47g of high-grade land and 0.25g of Glauber's salt, mix the above raw materials evenly, and Sexuality ≥ 95%, the formula is consistent with the above-mentioned ingredients and content.

[0026] Although the composition of the raw materials is complex, the main components and impurity content of the raw materials used are regulated accordingly, and the glass with the above components can be prepared throu...

Embodiment 2

[0034] Process is identical with embodiment 1, and the present embodiment has the component and weight percentage of the alkali-free glass fiber of improving performance to be: SiO 2 :56.5%; B 2 o 3 : 3.5%; Al 2 o 3 : 14.5%; CaO: 20%; MgO: 3.0%; R 2 O=K 2 O+Na 2 O: 1.0%; TiO 2 :0.5% and Fe 2 o 3 +ZnO+ZrO 2 +Cr 2 o 3 :1%.

[0035] The corresponding material formula is as follows: 58.28g of pyrophyllite; 5.75g of albite; 12.86g of dolomite; 24.08g of limestone; White powder 0.13g.

[0036] Embodiment 2 compares with the test result of prior art:

[0037] Element Background technique(%) Example 2 (%) SiO 2

[0038] It can be seen from the above table that in this implementation case, through the adjustment of the ratio of glass components, the raw material cost of glass fiber has been reduced by 18.5%; Meet the stability of the fiber drawing process; the elastic modulus of the fiber is increased by 6.4GPa, which improves the brittleness of the f...

Embodiment 3

[0040] Process is identical with embodiment 1, and the present embodiment has the component and weight percentage of the alkali-free glass fiber of improving performance to be: SiO 2 :57.5%; B 2 o 3 : 3%; Al 2 o 3 : 13.5%; CaO: 20.5%; MgO: 2.8%; R 2 O=K 2 O+Na 2 O: 1.1%; TiO 2 :0.6% and Fe 2 o 3 +ZnO+ZrO 2 +Cr 2 o 3 :1%.

[0041] The corresponding material formula is as follows: 61.26g of pyrophyllite; 7.24g of albite; 11.99g of dolomite; 26.09g of limestone; White powder 0.25g.

[0042] Embodiment 3 is compared with the test result of prior art:

[0043] Element Background technique(%) Example 3 (%) SiO 2

[0044] It can be seen from the above table that in this implementation case, through the adjustment of the ratio of glass components, the raw material cost of glass fiber has dropped by 20%; the liquidus temperature of the glass is basically consistent with the existing alkali-free liquid line temperature, which can Meet the stable needs ...

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Abstract

The present invention relates to an alkali-free glass fiber having improved property, and a preparation method thereof, wherein the chemical components of the alkali-free glass fiber comprise, by weight, 56-57.5% of SiO2, 3-4.5% of B2O3, 13.5-15% of Al2O3, 19-20.5% of CaO, 2.8-3.5% of MgO, 0.8-1.1% of R2O=K2O+Na2O, 0.2-0.6% of TiO2, and the balance of Fe2O3+ZnO+ZrO2+Cr2O3, and raw material preparation, melting, drawing, spooling, glue immersing, drying and detection are performed to obtain the alkali-free glass fiber. According to the present invention, by adjusting the component ratio of the formula, the pollution caused by boron volatilization is reduced, the environmental protection is easily achieved, the resources are saved, and the powder production cost is substantially reduced; and through the synergistic effect of various components and the strict control of the component content, the prepared alkali-free glass fiber has excellent performance.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to an alkali-free [0002] Glass fibers and methods for their preparation. Background technique [0003] Glass fiber is an inorganic non-metallic material with excellent properties. English formerly known as: glass fiber or fiberglass. The ingredients are silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. It uses glass balls or waste glass as raw materials through high-temperature melting, wire drawing, winding, dipping and other processes. Finally, various products are formed. The diameter of glass fiber monofilament ranges from a few microns to more than 20 meters, which is equivalent to 1 / 20-1 / 5 of a hair. Composed of thousands of monofilaments, it is usually used as reinforcing materials in composite materials, electrical insulation materials and heat insulation materials, circuit substrates, etc., and is widely used in various fields of n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/02C03B5/235C03C6/06
CPCC03B5/235C03C1/00C03C13/00Y02P40/50
Inventor 梁中全许瑞存丁文华胡林谢峰
Owner JIANGSU JIUDING NEW MATERIAL CO LTD
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