Boron-free high-performance glass fiber taking pulverized fuel ash and desalted river sand as raw materials, as well as preparation method thereof

Abstract

The invention discloses a boron-free high-performance glass fiber taking pulverized fuel ash and desalted river sand as raw materials, as well as a preparation method thereof, belonging to the technical field of materials. The boron-free high-performance glass fiber is prepared from the following raw materials in percentage by weight: 30-55% of pulverized fuel ash, 0-15% of blast-furnace slag, 40-50% of desalted river sand, 0-12%of magnesium oxide, and 0-6% of calcium oxide. The high-performance glass fiber can be prepared in a common refractory material liner smelting furnace by pretreating the pulverized fuel ash and adding a less amount of blast furnace slag, magnesium oxide and calcium oxide through taking pulverized fuel ash and desalted river sand as raw materials, the strength and elastic modulus are obviously higher than those of the common E glass and ECR, Advantex boron-free glass and the like, the preparation processes are simple, the smelting temperature is at 1400-1420DEG C, a difference between the fiber forming temperature and liquid phase temperature is more than 70DEG C which is far higher than the lowest standard of the glass fiber industrial production being 50DEG C, the production cost is low, and the glass fiber industrial production standard can be met. The component glass has higher chemical corrosion resistance and high-temperature resistance properties compared with the traditional E glass.

Description

technical field [0001] The invention relates to a boron-free high-performance glass fiber made of fly ash and desalinated river sand and its preparation method. The application in the field of materials belongs to the field of special glass fiber components. Background technique [0002] Glass fiber has the characteristics of large specific surface area, high specific strength, heat resistance, non-combustibility, stable physical and chemical properties, etc., and has certain functional designability. Since its birth in the 1930s, with the development of glass fiber production technology, products have been widely used and Aerospace, aviation, automobile, shipbuilding, petrochemical, electrical, electronics, construction, environmental protection, energy, sports and leisure equipment, medical and health care and other fields. [0003] At present, the most commonly used glass fiber at home and abroad is alkali-free glass fiber (E-glass). The new ecological tensile strength o...

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Problems solved by technology

However, no matter what kind of high-performance glass, there are problems such as high glass fiber forming temperature, difficult wire drawing, inability to melt in a furnace lined with ordinary oxide refractory materials, and high production costs, such as S-2 TM High-strength glass fiber, the liquidus temperature of this glass is 1471°C, and the temperature of the drawing bushing is as high as 1571°C, which needs to be melted in a furnace lined with precious metals such as platinum and rhodium; R-glass contains more alumina, and its melting High temperature, low ΔT, easy to devitrify

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