Glass fiber for wind turbine blade and preparation method thereof

Abstract

The invention discloses a glass fiber for a wind turbine blade and a preparation method thereof. The glass fiber comprises the following raw materials by weight: 50-60 parts of SiO2, 20-25 parts of Al2O3, 10-15 parts of MgO, 0.5-1.5 parts of CeO2, 0.5-1.5 parts of Li2O, 1-1.5 parts of Bi2O3, 0.5-1.5 parts of Fe2O3, 0.5-1.5 parts of WO3, 0.05-0.1 part of MnO2 and 0.05-0.1 part of TiO2. The method is very easy to implement and the preparation process does not produce any substance toxic and harmful to the human body or polluting the environment. The prepared glass fiber has stable performance in various aspects, which is favorable for mass production. The strength, elastic modulus and other aspects of the mechanical properties can meet the mechanical property demands of the common wind turbine blade. Besides, while ensuring the above performance, compared with those prepared by other prior arts, the glass fiber prepared by the method provided in the invention has a lighter weight, which is very suitable for the mechanical structure which has demands of both enough mechanical strength and weight reduction, especially for the helical blade of the wind turbine. The method has good environmental protection and practical values.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a glass fiber for wind generator blades. Background technique [0002] Compared with ordinary non-alkali glass fiber, high-strength 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 development of science and technology, the demand for high-strength glass fibers in optical cables, temperature-resistant materials, friction materials and other industrial fields is also expanding. [0003] Commercially produced high-strength glass fibers are composed of SiO 2 -Al 2 o ...

AI Technical Summary

Problems solved by technology

However, the glass fiber produced by this method has a high density, and its mass is also very large when it is made into a larger component. If it is applied to the manufacture of wind turbine blades, it will lead to low wind energy utilization and high maintenance costs.