Preparation method of high-performance glass fiber

Abstract

The invention discloses a preparation method of high-performance glass fiber. The preparation method comprises the following steps: weighing a compound of silicon, aluminum, magnesium, calcium, zirconium, titanium, ferrum, cerium, yttrium, niobium, lithium, bismuth and boron, wherein the water-soluble compound is not less than 10% of the total molar quantity of all the compounds; then adding deionized water, and by taking zirconium oxide grinding balls as a grinding medium, sequentially performing ball grinding, spray drying, calcination, isostatic pressing treatment, fusing, wire drawing and other processes. The water-soluble compound evenly coats the surfaces of other compounds in a manner of ions through ball grinding mixing and spray drying, then nanoscale particles can be obtained after calcination. Under the high specific surface energy action of the nanoparticles and isostatic pressing, all the components are closely contacted, and the fusion temperature and fusion time of the glass can be obviously reduced, so that the energy consumption needed in the production of the glass fiber can be reduced.

Description

technical field [0001] The invention relates to a method for preparing high-performance glass fiber, which belongs to the technical field of material science. Background technique [0002] Compared with ordinary alkali-free glass fiber, high-performance glass fiber has excellent properties such as high tensile strength, high elastic modulus, good impact resistance, good chemical stability, good fatigue resistance, high temperature resistance, etc., and is widely used in aerospace, aviation , weapons, ships, chemical industry and other fields, such as missile engine casings, aerospace aircraft linings, gun stocks, launching barrels, bulletproof armor, high-pressure vessels, etc. With the continuous development of science and technology, the demand for high-performance glass fibers in optical cables, high-strength, high-temperature-resistant materials and other industrial fields is also expanding. [0003] At present, the main countries and products that produce high-performa...

AI Technical Summary

Problems solved by technology

Its preparation method is in SiO 2 -Al 2 o 3 -Based on the composition of CaO, a certain amount of Na is added 2 O, K 2 O and other basic compounds, glass fibers are obtained through the process of mixing-melting-drawing, the melting temperature is 1450°C, the drawing temperature is 1280°C, and the melting time is 4-5 hours; although a certain amount of Na is introduced + 、K + The melting temperature, melting time and high temperature viscosity of the glass are greatly reduced, and the matrix itself contains a large amount of Ca 2+ Improves the material properties of glass liquid, but its new ecological strength of monofilament is only 3200~3400 MPa

In addition, China Taishan Glass Fiber Co., Ltd. launched an environmentally friendly high-modulus glass fiber preparation method. The raw materials include silica sand, pyrophyllite, kaolin, alunite, quicklime, magnesia and blast furnace slag, and then quenched by water at 1300 ° C The glass block obtained by quenching treatment is put into the electric furnace and remelted for 4~5 hours, and the continuous glass fiber is drawn by using a single-hole drawing crucible. The melting temperature is 1470°C and the drawing temperature is 1310°C; Quenching and rapid cooling treatment and high-temperature melting make the components of glass particles more compact, greatly reducing the melting temperature and melting time, but after the rapid cooling of the melt at high temperature, the ions have no time to return, resulting in maintaining a high-energy glass state , the Si-O bonds and the Al-O bonds are arranged in an irregular disorder, which reduces the strength of the glass fiber, and its new ecological strength of the fiber is only 3100~3500 MPa