High strength glass fiber composition

Abstract

The invention discloses a high strength glass fiber composition which comprises the components with the weight percentage: 58-65% of SiO2, 14-20% of Al2O3, 15-25% of CaO+MgO, 0.05-1% of K2O+Na2O, 0.05-1% of Fe2O3 and 0.1-2% of CeO2; wherein, the proportional relation of the components is that CaO / MgO is more than 0.7 and less than 2.2. By preference and combination of the components, the high strength glass fiber composition not only can fully utilize rich raw mineral materials of China, but also can reduce mold temperature, liquidus temperature and clarification temperature and has lower total cost and easy large scale commercial process under the premise of ensuring the high strength of glass fiber.

Description

(1) Technical field [0001] The invention relates to a glass fiber composition, in particular to a high-strength glass fiber composition. (2) Background technology [0002] Glass fiber belongs to inorganic fiber material, and it can be used to reinforce resin to make composite material with excellent performance. As the reinforcing substrate of advanced composite materials, high-strength glass fiber was originally mainly used in the fields of national defense and military industries such as aviation, aerospace, and weapons. With the advancement of science and technology and economic development, high-strength glass fibers have been widely used in civil and industrial fields such as motors, wind blades, pressure vessels, offshore oil pipelines, sports equipment, and automobiles. [0003] Since Owens-Corning of the United States developed S glass fiber, various countries have competed to develop and produce high-strength glass fiber with various components, such as R glass fib...

AI Technical Summary

Problems solved by technology

Among them, the main component of S glass fiber is SiO 2 、Al 2 o 3 , MgO, the glass forming temperature is relatively high, the drawing temperature is as high as about 1571°C, and the liquidus temperature reaches 1470°C, which makes it difficult to prepare glass and realize large-scale industrial production.

in SiO 2 、Al 2 o 3 , MgO ternary components, the high-strength 2# glass fiber also introduces Li 2 O.B 2 o 3 , CeO 2 , Fe 2 o 3 , its molding temperature is only about 1245°C, and its liquidus temperature is 1320°C, both of which are much lower than S glass fiber, but its molding temperature is lower than the liquidus temperature, which is not conducive to the good drawing of glass. Increase the drawing temperature and use a special form of leak nozzle to prevent glass devitrification during the drawing process, which makes it difficult to control the temperature and realize large-scale industrial production

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