To provide a glass fiber which can improve the refractive index of the glass fiber to the same level as a polycarbonate and maintain the transmittance of a molded product after the fiber is reinforced, and a glass fiber-reinforced polycarbonate resin molded product using the glass fiber. A glass fib
To provide a glass fiber which can improve the refractive index of the glass fiber to the same level as a polycarbonate and maintain the transmittance of a molded product after the fiber is reinforced, and a glass fiber-reinforced polycarbonate resin molded product using the glass fiber. A glass fiber to be used as a glass fiber for reinforcing a polycarbonate resin comprising, as inorganic components in whole glass fiber, from 50 to 60 mass % of SiO2, from 10 to 15 mass % of Al2O3, from 15 to 25 mass % of CaO, from 2 to 10 mass % of TiO2, from 2 to 8 mass % of B2O3, from 0 to 5 mass % of MgO, from 0 to 5 mass % of ZnO, from 0 to 5 mass % of BaO, from 0 to 5 mass % of ZrO2, from 0 to 2 mass % of Li2O, from 0 to 2 mass % of Na2O and from 0 to 2 mass % of K2O, wherein the total content of the above Li2O, Na2O and K2O is from 0 to 2 mass % based on the above whole glass fiber, and the refractive index of the above glass fiber is from 1.580 to 1.590.
대표청구항▼
1. A glass fiber for reinforcing a polycarbonate resin comprising, as inorganic components in the whole glass fiber: from 50 to 60 mass % of silicon dioxide (SiO2),from 10 to 15 mass % of aluminum oxide (Al2O3),from 15 to 25 mass % of calcium oxide (CaO),from 4.1 to 5 mass % of titanium oxide (TiO2)
1. A glass fiber for reinforcing a polycarbonate resin comprising, as inorganic components in the whole glass fiber: from 50 to 60 mass % of silicon dioxide (SiO2),from 10 to 15 mass % of aluminum oxide (Al2O3),from 15 to 25 mass % of calcium oxide (CaO),from 4.1 to 5 mass % of titanium oxide (TiO2),from 0 to 5 mass % of magnesium oxide (MgO),from 0 to 3.9 mass % of zinc oxide (ZnO),from 0 to 3.9 mass % of barium oxide (BaO),0 mass % of zirconium oxide (ZrO2),from 0 to less than 1.0 mass % of lithium oxide (Li2O),from 0 to less than 1.0 mass % of sodium oxide (Na2O) andfrom 0 to less than 1.0 mass % of potassium oxide (K2O),whereina total content of the lithium oxide (Li2O), sodium oxide (Na2O) and potassium oxide (K2O) is less than 1.0 mass %,a total content of the zinc oxide (ZnO) and barium oxide (BaO) is from 1 to 3.9 mass %,a total content of the titanium oxide (TiO2), zinc oxide (ZnO) and barium oxide (BaO) is from 6 to 8 mass %,and the refractive index of the above glass fiber is from 1.583 to 1.586. 2. The glass fiber for reinforcing a polycarbonate resin according to claim 1, which contains substantially no boron oxide (B2O3). 3. A transparent molded polycarbonate resin product obtained by molding a resin composition comprising: a glass fiber; anda polycarbonate resin;whereina refractive index of the glass fiber is from 1.583 to 1.586, andthe glass fiber comprises, based on the whole glass fiber:from 50 to 60 mass % of silicon dioxide (SiO2),from 10 to 15 mass % of aluminum oxide (Al2O3),from 15 to 25 mass % of calcium oxide (CaO),from 4.1 to 5 mass % of titanium oxide (TiO2),from 0 to 5 mass % of magnesium oxide (MgO),from 0 to 3.9 mass % of zinc oxide (ZnO),from 0 to 3.9 mass % of barium oxide (BaO),0 mass % of zirconium oxide (ZrO2),from 0 to less than 1.0 mass % of lithium oxide (Li2O),from 0 to less than 1.0 mass % of sodium oxide (Na2O) andfrom 0 to less than 1.0 mass % of potassium oxide (K2O),whereina total content of the lithium oxide (Li2O), sodium oxide (Na2O) and potassium oxide (K2O) is less than 1.0 mass %,a total content of the zinc oxide (ZnO) and barium oxide (BaO) is from 1 to 3.9 mass %, anda total content of the titanium oxide (TiO2), zinc oxide (ZnO) and barium oxide (BaO) is from 6 to 8 mass %. 4. The transparent molded polycarbonate resin product according to claim 3, wherein a content of the glass fiber is from 5 to 60 mass %. 5. The transparent molded polycarbonate resin product according to claim 3, wherein the difference between the refractive index of the polycarbonate resin and the refractive index of the glass fiber is at most 0.001. 6. The transparent molded polycarbonate resin product according to claim 4, wherein the difference between the refractive index of the polycarbonate resin and the refractive index of the glass fiber is at most 0.001.
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이 특허에 인용된 특허 (1)
Erickson Thomas D. (Newark OH) Wolf Warren W. (Reynoldsburg OH), Glass compositions, fibers and methods of making same.
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