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Glass composition and glass product using same

A technology of glass composition and glass long fiber, which is applied in the direction of textiles and papermaking, inorganic raw material artificial filament, yarn, etc., to achieve the effect of high Young's modulus and large crack resistance load

Active Publication Date: 2020-02-18
NIPPON SHEET GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most glass compositions for practical use have a Young's modulus (tensile elastic modulus) of 90 GPa or less, but the Young's modulus of the glass composition of Patent Document 1 exceeds 100 GPa

Method used

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  • Glass composition and glass product using same
  • Glass composition and glass product using same
  • Glass composition and glass product using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0102] Hereinafter, the present invention will be described more specifically by way of examples.

[0103] Glass raw materials were prepared so as to have the compositions shown in Tables 1 and 2, and melted in an electric furnace maintained at 1500°C to 1600°C for 4 hours. During melting, in order to ensure the homogeneity of the glass, stirring was performed several times with a stirring rod made of quartz glass. Thereafter, the molten glass is poured into a stainless steel frame to produce plate-shaped glass. The plate glass was kept at the glass transition temperature of each glass + 20°C to 50°C for 2 hours or more, then naturally cooled to room temperature over about 8 hours, and then slowly cooled, which was used as a sample glass for measurement. Using the sample glass thus obtained, the following characteristics were measured.

[0104] (density)

[0105] For small pieces of sample glass, the density was measured by the Archimedes method using water as an immersion ...

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PUM

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Abstract

The present invention provides a glass composition which can be produced using an ordinary glass production apparatus without using large quantities of rare earth raw materials, which has a high Young's modulus and a large crack resistance load, and which is suitable for use as glass fibers and the like. This glass composition contains 50-65% of SiO2, 7.5-26% of Al2O3, 15-30% of MgO, 0-8% of CaO,0-3% of B2O3, 0-3% of Li2O and 0-0.2% of Na2O in terms of mol%, with the total content of MgO and CaO being 18-35 mol% and the value of Al2O3 / (MgO+CaO) being less than 1.

Description

technical field [0001] The present invention relates to a glass composition suitable for glass fibers, and more specifically, to a glass composition suitable for rubber reinforcing threads, glass fiber products such as glass fiber non-woven fabrics, granular glass products used as fillers, and the like; And glass products made of the glass composition. Background technique [0002] Rubber reinforcement threads are used as reinforcing materials for rubber products subjected to repeated bending stress. Rubber reinforcing threads are embedded in rubber products such as rubber belts and tires to suppress the reduction in elongation and strength of the rubber products, and contribute to the improvement of the dimensional stability of the rubber products and the prolongation of the fatigue life. As fibers for constituting rubber reinforcing threads, aramid fibers, carbon fibers, polyester fibers, etc., and glass fibers are known. [0003] Patent Document 1 discloses glass fibers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/00C03C3/085C03C3/087C03C3/091D02G3/18
CPCC03C3/085C03C3/087C03C3/091C03C12/00C03C13/00C08K3/40C08K7/14C08L21/00D04H1/4218C03C3/095C08J5/042D01F9/08
Inventor 中村文小路谷将范
Owner NIPPON SHEET GLASS CO LTD