Basalt fiber composition with high alkali resistance and application method of basalt fiber composition

Abstract

The invention discloses a basalt fiber composition with high alkali resistance. The basalt fiber composition comprises the following ingredients by weight: 50% to 60.5% of SiO2, 3.6% to 7.5% of Al2O3, 0.5% to 1.8% of MgO, 8.2% to 15.5% of CaO, 8% to 15% of Fe2O3 and FeO, 1% to 4.5% of K2O, 3% to 6% of Na2O, 1% to 3% of TiO2, 3.5% to 9.5% of ZrO2, and 0.5% to 1.3% of CeO2. As a proper quantity of CeO2 is used, the alkali-resisting performance and drawing operation performance of the basalt fiber are improved. The basalt fiber prepared from the raw materials has excellent mechanical property and alkali resistance, can be used for reinforcing a cement-based composite individually, and also can be used as a reinforcing material of a resin matrix-based composite with high alkali resistance.

Description

technical field [0001] The invention relates to the field of basalt fiber materials, in particular to a high alkali resistance basalt fiber composition and an application method thereof. Background technique [0002] Continuous basalt fiber (Continuous Basalt Fiber, referred to as CBF or BF) is made of natural basalt ore as raw material. After melting at a high temperature of about 1500 ° C, it is formed by a platinum-rhodium alloy bushing plate and drawn continuously for tens of thousands of meters by a wire drawing machine. fiber. Continuous basalt fiber is a new type of environmentally friendly inorganic fiber material, which has excellent properties such as light weight, high strength, high temperature resistance, corrosion resistance, oxidation resistance, radiation protection, heat insulation and sound insulation. It is another high-tech fiber after carbon fiber, aramid fiber and ultra-high molecular weight polyethylene fiber. It has a wide range of uses in aerospace,...

AI Technical Summary

Problems solved by technology

SiO in this patent 2 with Al 2 o 3 The sum of the contents is relatively high, and the alkali resistance is not ideal. The reported data is: Ca(OH) at 100°C 2 After soaking in saturated solution for 4 hours, the tensile strength of the fiber is >800MPa, and the retention rate of monofilament strength is >75%.

In addition, this patent uses fluorite as a raw material, which will decompose and produce fluorine-containing gas during the fiber production process, pollute the air, and cause harm to the growth of surrounding organisms

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