Enhancement type glass fiber composition

Abstract

The invention belongs to the technical field of glass fiber and relates to an enhancement type spinning high-strength and high-modulus glass fiber composition applied to the fields of electromechanics, chemical engineering, aircrafts and the like. The enhancement type spinning glass fiber composition is prepared from, by weight, 56-65% of SiO2, 15-21% of Al2O3, 9-18% of MgO, 5-13% of CaO, 0.1-4% of Y2O3, 0-0.8% of Li2O, 0.1-1% of K2O+Na2O, and 3% or less of other impurities. The enhancement type glass fiber composition is prepared through a tank furnace technological process, by means of optimization and combination of the oxide components and particularly the introduction of Y2O3, the melting temperature, the clarification temperature and the shaping temperature of the enhancement type glass fiber composition are reduced under the situation that high strength and high modulus are guaranteed, the temperature difference between the shaping temperature and the liquidus temperature is increased, the wiredrawing situation is improved, and the enhancement type glass fiber composition is beneficial to the industrial production of high-strength and high-modulus fibers.

Description

Technical field: [0001] The invention belongs to the technical field of glass fiber preparation, and relates to a reinforced textile high-strength and high-modulus glass fiber composition, which can be used in the fields of electromechanical, chemical and aircraft as a new type of material. Background technique: [0002] Glass fiber is an inorganic non-metallic material with excellent performance. It is usually used in various fields of the national economy such as reinforcing materials in composite materials, electrical insulation materials, heat insulation materials, and circuit substrates. High-strength and high-modulus glass fibers were originally used in the field of national defense and military industry. With the development of science and technology, high-strength and high-modulus glass fibers are now widely used in wind blades, high-pressure vessels, offshore oil pipelines, automobiles and aviation. Typical high-strength and high-modulus glasses mainly include S-gla...

AI Technical Summary

Problems solved by technology

The glass is due to the addition of higher Al 2 o 3 , leading to a higher liquidus temperature, ranging from 1240 to 1350 in the examples, and the melting and clarification temperature is as high as above 1500°C; Chinese patent application number CN200910104239.2 discloses a high-strength and high-modulus glass Fiber, its composition is: 56-64% SiO 2 , 13-20% Al 2 o 3 , 7-12% MgO, 8-13% CaO, 0-2.5% TiO 2 , 0~2% ZrO 2 , 0~1% K 2 O+Na 2 O content, the glass added TiO 2 , resulting in yellowing of the glass color, which is limited in some industrial applications

At the same time added ZrO 2 , leading to devitrification easily during wire drawing; Chinese patent application number CN201180037080.2 discloses a high-strength and high-modulus glass fiber composition, which consists of 74-80% SiO 2 , 5-9.5% Al 2 o 3 , 8.75-14.75% MgO, 0-3% CaO, 2-3.25% Li 2 O, 0-2% Na 2 O; the glass uses a very high proportion of SiO 2 , so that the forming temperature reaches 1400°C, and the liquidus temperature reaches 1457°C, resulting in excessively high forming temperature and liquidus temperature, and at the same time, the forming temperature is lower than the liquidus temperature, which is not conducive to the drawing of glass fibers; the Chinese patent application number is CN201180037104.4 Disclosed is a high-strength and high-modulus glass fiber composition, which consists of: 60-73.01% SiO 2 , 13-26% Al 2 o 3 , 5-12.75% MgO, 3.25-4% CaO, 3.24-4% Li 2 O, 0-0.75% Na 2 O; the glass added higher LiO 2 , has a reducing effect on the strength of the glass, and also has a large erosion on the refractory material, and forms an inhomogeneous glass with the refractory material. At the same time, due to the extremely low ratio of CaO / MgO, the glass is prone to devitrification, which is not conducive to the drawing of fibers.

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