Method for preparing environment-friendly high-modulus glass fiber
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A technology of glass fiber and high modulus, which is applied in the field of high modulus glass fiber and its preparation, and can solve the problems of high-fiberization temperature and difficult operation of high-performance reinforced glass fiber
Active Publication Date: 2010-06-16
TAISHAN FIBERGLASS INC
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Problems solved by technology
[0006] The object of the present invention aims at the shortcomings of existing high-performance reinforced glass fibers, such as high fiberization temperature and difficult operation, by introducing blast furnace slag processed under specific conditions as a flux to provide a reinforced glass fiber composition. The material can be made into glass fiber cheaply by using the low-cost direct melting method in the ordinary alkali-free glass fiber tank kiln, and has good economic value and use value in the field of high modulus glass fiber production
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Embodiment 1
[0039] Example 1, the blast furnace slag that has been quenched at a high temperature above 1300°C from the steelmaking blast furnace is treated with an iron removal system, and the iron content is detected and controlled to be less than or equal to 0.3%. According to the redox property of the detected blast furnace slag, a certain amount of oxidizing compound is added for reconciliation, such as sulfate (about 1 ton of blast furnace slag is added with 1 to 10Kg of oxidizing compound).
[0040] Weigh 200Kg of suitable blast furnace slag for grinding, test its composition, and calculate according to the formula, add corresponding mineral raw materials such as pyrophyllite, quicklime, silica sand, etc. CeO2 is used as a clarifier, which is melted in a pool kiln with an electric melting structure, and the fully clarified glass is uniformly transported through the channel to the platinum-rhodium alloy bushing plate for drawing to make glass fiber, and the glass fiber is detected T...
Embodiment 2
[0041] Example 2, take 100Kg of processed blast furnace slag as in Example 1, detect its composition, calculate according to the formula, add corresponding mineral raw materials such as pyrophyllite, quicklime, silica sand, and be mixed with 1000Kg of batch materials as shown in the following table, and melt in the pool kiln The glass fiber was melted and drawn, and the glass fiberization temperature was detected to be 1261°C, and the ΔT was 96°C.
Embodiment 3
[0042] Example 3, take 80Kg of processed blast furnace slag as in Example 1, detect its composition, calculate according to the formula, add mineral raw materials such as corresponding pyrophyllite, quicklime, silica sand and be mixed with the batch material 1000Kg of the following table of composition, melt in the pool kiln The glass fiber was melted and drawn, and the glass fiberization temperature was detected to be 1267°C, and the ΔT was 96°C.
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Abstract
The invention relates to an environment-friendly high-modulus glass fiber composition, and discloses a glass component combination used for preparing the high-modulus glass fiber. The glass fiber prepared by glass components is particularly applied to preparing glass fiber reinforced plastic composite material with higher rigidity requirement. The glass composition has no emission of harmful gas, greatly reduces the emission of greenhouse gas, and is an environment-friendly glass fiber formula. The environment-friendly high-modulus glass fiber composition is characterized in that: a blast furnace slag preferably serves as one of major raw materials for reducing the operational difficulty and prepares the high-modulus glass fiber, and the high-modulus glass fiber can be produced and wiredrawn on a tank furnace having an electro-boost structure on a large scale by adopting a direct method. The fiber mainly comprises the following main components: 57 to 62.5 weight percent of SiO2, 14.5 to 19.5 weight percent of Al2O3, 16 to 23.5 weight percent of RO (wherein RO is the sum of CaO, MgO, SrO and BaO), and less than and equal to 1.5 percent of alkali metal oxide. The glass composition and the adopted raw material mode are suitable for the mass production under the production technological condition of the electro-boost tank furnace, and the glass composition has low production cost.
Description
technical field [0001] The invention relates to a high modulus glass fiber and a preparation method thereof, in particular to the application of a reinforcing fiber whose strength and rigidity are difficult to be met by the current general glass fiber. The invention also relates to an environment-friendly glass fiber formula with less harmful gas emission. Background technique [0002] The most common glass composition used to make continuous glass fiber strands is alkali-free glass fibers, commonly known as "E-glass". With the increasing application of non-alkali glass fiber, in some fields, especially those with higher strength and modulus requirements, non-alkali glass fiber can no longer meet the requirements of its mechanical properties. In aerospace components, special-purpose automotive components, and windmill blades for large-scale wind power generation, it is necessary to find composite materials suitable for higher strength, higher modulus, and larger-sized parts,...
Claims
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Application Information
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