High-transparency glass fiber composition as well as glass fibers and composite material thereof

Abstract

The invention relates to a high-transparency glass fiber composition, glass fibers and a composite material. The glass fiber composition comprises: 55.2 to 59.2 wt% of SiO2, 11.6 wt% to 15.6 wt% of Al2O3, 21.5 wt% to 23.3 wt% of CaO, 0 to 0.5 wt% of MgO, 3.5 to 4.9 wt% of Y2O3, 0.1 to 1.2 wt% of La2O3, 0.1 to 1.2 wt% of CeO2, 0 to 0.4 wt% of TiO2, and 0 to 0.3 wt% of Fe2O3; wherein the sum of themass percentages of the Li2O, the Na2O and the K2O is 0.3-1.5 wt%. The refractive index of the high-transparency glass fiber is 1.580-1.590; the high-transparency glass fiber has good matching performance with the refractive index of polycarbonate resin, and has a lighter color; the tensile strength of the glass fiber impregnated yarn is 2600 MPa or above, the tensile modulus of the glass fiber impregnated yarn is larger than 87 GPa, and the glass fiber impregnated yarn has good dimensional stability. The glass fiber forming temperature does not exceed 1210 DEG C, and the crystallization upperlimit temperature does not exceed 1150 DEG C.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, in particular to a high-transparency glass fiber composition and its glass fiber and composite material. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance. It has the advantages of high tensile strength, high strength, good temperature resistance, good corrosion resistance, heat insulation, sound insulation, and non-combustibility. It is widely used in electronics, electrical appliances, automobiles, Aviation, ships, environmental protection, chemical industry, construction and other fields. [0003] As a thermoplastic resin, polycarbonate (PC) has good transparency, non-toxicity, weather and heat resistance, impact resistance, fatigue resistance and electrical properties, and is the fastest-growing general engineering among the five engineering plastics. Plastics are widely used in glass assembly industry, automobile...

AI Technical Summary

Problems solved by technology

Glass fiber components without B2O3 include (weight percent): SiO2 50-60%, Al2 O3 10-15%, CaO 15-25%, TiO2 4.1-5%, MgO 0-5%, ZnO 0-5%, BaO 0-5%, ZrO2 0-5%, Li2O+Na2O+K2O 0-2%, ZnO+Y2O3 1-5%, TiO2+ZnO+BaO+ZrO 2 6-8%, the refractive index of this glass fiber is 1.583-1.586, but the content of TiO2 is obviously high, which makes the glass fiber product bright yellow and the transparency is seriously affected

[0007] Chinese patent CN200910002941.8 discloses a similar polycarbonate resin reinforced glass fiber, its main components include (weight percent): SiO2 50-60%, Al2O3 10-15%, CaO 15-25%, TiO2 3-5 %, MgO0-5%, ZnO 0-5%, BaO 0-5%, ZrO2 0-5%, Li2O+Na2O+K2O 0-2%, ZrO2 2-5%, the refractive index of this glass fiber can reach 1.583-1.586, although it can improve The refractive index of glass fiber, however, due to the large amount of TiO2, the color of glass products is obviously yellowish, and the production is difficult, which also limits its application range

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