High modulus glass fiber

Abstract

The invention provides a high modulus glass fiber, which belongs to the technical field of an inorganic nonmetal material. The high modulus glass fiber comprises the following components by weight percent: 59 to 61 percent of SiO2, 16 to 18 percent of Al2O3, 9.5 to 10.9 percent of CaO, 9.5 to 12 percent of MgO, 0 to 5 percent of BeO, 0 to 1.2 percent of TiO2, 0 to 0.6 percent of Fe2O3, 0.1 to 0.8 percent of Na2O+K2O, and also comprises less than or equal to 2 percent of one or two of ZrO2 and ZnO, so that the stretching modulus of the glass fiber is further improved. By adopting the high modulus glass fiber, an optimum proportioning ratio of the high modulus glass fiber is found, so that the mechanical performance of the glass fiber is greatly improved, under the condition of not increasing the fusion difficulty, the production cost is reduced, the product performance is improved, and the market prospect is promising.

Description

Technical field [0001] The invention relates to a glass fiber, in particular to a high modulus glass fiber, and belongs to the technical field of inorganic non-metallic materials. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance. It has many advantages such as high specific strength, high specific modulus, good electrical insulation, strong heat resistance, and good corrosion resistance. It is currently used in resin-based composite materials. The most widely used reinforced substrate, the use ratio exceeds 90%. [0003] With the continuous expansion of the application fields of glass fiber composite materials, the performance requirements of glass fibers in the industry are also increasing, especially in the fields of wind power, aerospace, shipbuilding, military industry, and automobiles. These fields have Stability, strength, etc. have stricter requirements. Therefore, for glass fiber as a reinforcing substrate, it is ne...

AI Technical Summary

Problems solved by technology

It is said that the tensile modulus of this glass fiber can reach 12.8KPSI (about 88.3GPa), but its molding temperature is too high, basically exceeding 2600°F (about 1427°C), the energy consumption is large, and the liquidus temperature is too high. Too high, liquidus temperature and wire drawing forming temperature are close to make fiber forming more difficult

[0011] Generally speaking, although people have made a lot of efforts and made great progress in improving the tensile modulus of glass fibers, there are still problems in the improvement of the tensile modulus of glass fibers due to the high fiber molding temperature and the high molding temperature. Due to the problem of being too close to the liquidus temperature, the processing cost is high and the industrialization cannot be realized.

Those skilled in the art know that if the tensile modulus of glass fiber is increased by 1GPa on the existing basis, the processing cost will be increased to more than 20% or even doubled to dozens of times due to reduced efficiency or increased requirements for processing equipment. times

Therefore, if the tensile modulus can exceed 88.3GPa or even reach more than 90GPa, while reducing the cost of glass fiber production or maintaining the original cost is the technical bottleneck in the field of glass fiber production, there are still many technical difficulties

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