High-modulus glass fiber composition

Abstract

The invention relates to a high-modulus glass fiber composition. The glass fiber composition contains the following components in parts by weight: 59-62 parts of SiO2, 13-15.5 parts of Al2O3, 12.5-18.5 parts of CaO, 4-8.5 parts of MgO, 1.5-4 parts of TiO2 and 0.1-0.6 part of Li2O; or the glass fiber composition contains the following components in parts by weight: 61-62 parts of SiO2, 14-15 parts of Al2O3, 13-14 parts of CaO, 7-8 parts of MgO, 0.4-0.6 part of Li2O and 0.8-0.9 part of B2O3. The invention has the advantages that by adopting the formula, the glass fiber composition which can meet the requirements of cost and environment is obtained, wherein the elastic modulus of the glass fiber composition can be increased and the liquidus temperature and the mechanical performance are significantly reduced.

Description

technical field [0001] The invention relates to a glass composition, in particular to a high-modulus glass fiber composition, which is mainly used in the fields of wind power blades and long-distance power transmission lines, and can also be used in the fields of national defense and military industries such as aviation, aerospace, and weapons. Background technique [0002] With the development of wind power technology, low-cost and large-scale development is an inevitable trend, and the key to the low-cost and large-scale development of wind power is to solve the technology of large-size wind power blades. As the length of blades increases, the strength and stiffness of materials are higher. Therefore, solving the strength and stiffness of blade materials is the key to solving the problem of large-scale wind power blades. For this reason, the developed countries of wind power regard the research and development of high-strength and high-modulus glass fiber as a main directi...

AI Technical Summary

Problems solved by technology

The advantage of this high-strength glass fiber is that it has good mechanical properties, that is, the tensile strength of single filament reaches 4540-4720MPa, and the tensile modulus of elasticity reaches 85-87GPa. The density of glass fiber is equivalent to that of E glass. The tensile strength is increased by more than 30 parts, and the tensile modulus is increased by more than 18 parts; in some special fields, the glass fiber modulus is required to be higher, but the modulus of the glass fiber cannot meet the requirements; and the liquidus temperature of the glass fiber is biased High, resulting in difficult production, and has a certain impact on the performance of the glass composition

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