Alkali-free superfine glass fiber formula

Abstract

The invention belongs to the technical field of glass fibers, and specifically relates to an alkali-free superfine glass fiber formula, wherein 100 Kg of the alkali-free superfine glass fiber comprise, by mass, 50-65% of SiO2, 10-16.5% of Al2O3, 17-28% of CaO, 0.2-4.0% of MgO, 0.1-0.8% of Na2O and K2O, 0.1-0.5% of CeO2, 0.1-0.7% of Li2O, 0.05-0.6% of Fe2O3, 0.1-1% of TiO2 and the balance of impurities. According to the invention, the preparation of alkali-free superfine glass fibers does not use fluorine-containing and boron-containing raw materials, and CeO2 and Li2O are introduced into the production of the superfine glass fibers, so that B2O3 and F greatly effecting the environment are prevented from being used, environmental pollution is reduced, the monofilament strength of the prepared glass fibers is improved by about 9% compared with the monofilament strength of the traditional E glass fiber, and the comprehensive performance of the prepared glass fiber product is obviously improved compared with the comprehensive performance of the existing E glass fibers.

Description

technical field [0001] The invention belongs to the technical field of glass fibers, and in particular relates to an alkali-free superfine glass fiber formula. Background technique [0002] In the production of existing ultra-fine glass fibers, glass component B is required 2 o 3 >5.0%, F>0.40%, lower than this value, will lead to changes in glass forming properties, it is difficult to draw ultra-fine glass fiber yarn, but when melting alkali-free glass due to F 2 with SiO 2 Combined with being extremely volatile, more than 50% of the fluoride will volatilize with the flue gas during the melting process. The treatment of fluorine-containing waste gas requires a lot of manpower and material resources. Waste gas treatment has caused a heavy economic burden to the glass fiber industry, and if Improper handling and discharge into the atmosphere will cause serious consequences and endanger the health of the public. Boron compounds are also volatile and expensive componen...

AI Technical Summary

Problems solved by technology

This patent completely removes the volatile boron-containing raw materials, and optimizes an industrial lithium-containing tailings as one of the main raw materials, which reduces the melting temperature, greatly reduces exhaust gas emissions, and its monofilament strength is significantly higher than traditional The intensity of the E glass fiber, improves about 8%; Therefore, the performance of the glass fiber product that the present invention produces has obviously improved than existing E glass fiber product performance, yet this patent defect is that although added Li 2 O guarantees the fusibility of the glass, but the high-temperature clarification ability is insufficient, and it is difficult to effectively discharge a large number of small bubbles in the glass, which affects the continuity of the glass fiber. It is difficult to draw glass fibers below 10 microns, even if it is barely drawn, It will also lead to the generation of hollow fibers due to the large amount of air bubbles, which will affect product quality and reduce operating efficiency

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