Process for manufacturing multielement composition high silica glass fibre fixed-length yarn

Abstract

The invention relates to a high-temperature resistant material, belongs to the field of special glass fibre materials and particularly relates to a multielement composition high silica glass fibre fixed-length yarn. The process comprises the following steps of: melting and processing sodium-boron-silicon three-element composition original glass as a raw material so as to perform fibre forming; sequentially carrying out calcination, cabling, warping and drawing-in to manufacture a yarn bundle; and then carrying out thermal treatment, acid leaching, water treatment, baking, thermal sintering and aftertreatment working procedures, so as to obtain the multielement composition high silica glass fibre fixed-length yarn. The process is reasonable in design and provides revelation for processing multielement composition high silica glass fibre products, so that the process can be widely applied to the production of various high silica glass fibre continuous filaments, short shreds, fabrics, mesh fabrics, gore text fabrics, punched felts, belts, sleeves and rope products, and the like. The multielement composition high silica glass fibre fixed-length yarn product is wider in application range, and is mainly used as an anti-ablation and heat-insulated insulating material in the aerospace and defence industry field, and used for high-temperature metal liquid filtration in the field of precision casting of cast copper, cast iron and the like, and heat insulation, protection, insulation and the like in the chemical engineering, metallurgy and building materials industries.

Description

technical field [0001] The invention relates to a high-temperature-resistant material, which belongs to the field of special glass fiber materials, in particular to a manufacturing process of multi-component high-silica glass fiber cut-to-length yarns. Background technique [0002] High silica glass fiber is a kind of high temperature resistant inorganic fiber, its silica content is 95% to 99%, and it can be used for a long time at 900°C. It is a reinforced material with high temperature resistance, ablation resistance, heat insulation and heat preservation functions. In recent years, with the gradual prohibition of the use of asbestos materials in the world and the promotion of the use of "non-ceramic" fiber products, high-silica glass fibers have been widely developed and applied. [0003] There are mainly two production methods of high silica glass fiber in the world, namely acid leaching method and sol-gel method. The sol-gel method has not yet formed an industrialized...

AI Technical Summary

Problems solved by technology

In the future, high-silica glass fiber will develop towards multi-variety and multi-standardization, especially through post-finishing processes, such as surface coating of various elemental materials or organic materials, to improve its machinability; 2 Content method to further improve its temperature resistance, the current domestic ternary high silica fiber SiO 2 The highest content is 97%, which is lower than the SiO of multi-component high-silica glass fiber products using E glass 2 Therefore, it is the future development direction to use multi-component high-silica glass fiber to prepare high-silica glass fiber products in domestic high-silica glass fiber production.

Images