High-strength glass fiber composition and preparation method thereof

Abstract

The invention discloses a high-strength glass fiber composition and a preparation method thereof, and belongs to the technical field of inorganic nonmetallic materials. The high-strength glass fiber composition is composed of the following components: 60 to 70 wt% of SiO2; 12 to 16 weight percent of Al2O3; 8 to 12 weight percent of CaO; 2 to 5 weight percent of MgO; 1 to 3 wt% of Yb2O3; 0.5 to 1 wt% of PbO; 2 to 4w% of SrO; 0.1 to 1 wt% of BaO; 1 to 1.5 wt% of B2O3; and 2 to 3 wt% of R2O; wherein the R2O is a mixture of Na2O, K2O and Li2O; and K2O accounts for 5-10% of the total weight of R2O, and the weight ratio of Na2O to Li2O is 1: 3. According to the invention, a plurality of ions are introduced into a network formed by SiO2 and Al2O3, and a synergistic effect among the ions is utilized, so that the network is tighter, and the tensile strength is improved.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a high-strength glass fiber composition and a preparation method thereof. Background technique [0002] Fiberglass is an inorganic non-metallic material with excellent performance. It has good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but it is brittle and poor in wear resistance. It is made of pyrophyllite, quartz sand, limestone, dolomite, boronite, and boronite as raw materials through high-temperature melting, wire drawing, winding, and weaving. The diameter of the single filament is several 1 micron to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair, and each bundle of fiber filaments is composed of hundreds or even thousands of monofilaments. The glass fiber is often used as reinforcing material of composite material, electrical insulation and heat insulation materials, substrate an...

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Problems solved by technology

[0003] The high-strength glass fiber composition in the prior art has a relatively high molding temperature, and the components and their proportions added to the formula are unreasonable, which will easily lead to performance degradation or pollution

For example, the addition of antimony oxide as a clarifying agent will affect human health; Fe 2 o 3 The introduction of components can easily lead to phase separation of the glass, resulting in poor stability and mechanical strength; too high a magnesium oxide content will increase the crystallization tendency of the glass

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