Method for preparing environment-friendly high-modulus glass fiber

Abstract

The invention relates to an environment-friendly high-modulus glass fiber composition, and discloses a glass component combination used for preparing the high-modulus glass fiber. The glass fiber prepared by glass components is particularly applied to preparing glass fiber reinforced plastic composite material with higher rigidity requirement. The glass composition has no emission of harmful gas, greatly reduces the emission of greenhouse gas, and is an environment-friendly glass fiber formula. The environment-friendly high-modulus glass fiber composition is characterized in that: a blast furnace slag preferably serves as one of major raw materials for reducing the operational difficulty and prepares the high-modulus glass fiber, and the high-modulus glass fiber can be produced and wiredrawn on a tank furnace having an electro-boost structure on a large scale by adopting a direct method. The fiber mainly comprises the following main components: 57 to 62.5 weight percent of SiO2, 14.5 to 19.5 weight percent of Al2O3, 16 to 23.5 weight percent of RO (wherein RO is the sum of CaO, MgO, SrO and BaO), and less than and equal to 1.5 percent of alkali metal oxide. The glass composition and the adopted raw material mode are suitable for the mass production under the production technological condition of the electro-boost tank furnace, and the glass composition has low production cost.

Description

technical field

[0001] The invention relates to a high modulus glass fiber and a preparation method thereof, in particular to the application of a reinforcing fiber whose strength and rigidity are difficult to be met by the current general glass fiber. The invention also relates to an environment-friendly glass fiber formula with less harmful gas emission. Background technique

[0002] The most common glass composition used to make continuous glass fiber strands is alkali-free glass fibers, commonly known as "E-glass". With the increasing application of non-alkali glass fiber, in some fields, especially those with higher strength and modulus requirements, non-alkali glass fiber can no longer meet the requirements of its mechanical properties. In aerospace components, special-purpose automotive components, and windmill blades for large-scale wind power generation, it is necessary to find composite materials suitable for higher strength, higher modulus, and larger-sized parts,...