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Production process of high-strength high-silicon dioxide glass fiber yarns

A high-silica glass fiber, production process technology, applied in two or more different solvent-based treatment materials, yarns, heating/cooling fabrics, etc., can solve the problem of acid leaching initial speed reduction of product strength and other problems , to achieve the effect of improving the use of the field, improving the strength, and improving the quality and stability

Active Publication Date: 2014-12-03
JIANGSU HENGZHOU SPECIAL GLASS FIBER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem of product strength reduction caused by too fast acid leaching initial speed of high-silica glass fiber yarn at present, and adopts a two-step acid leaching process, that is, high-silica glass fiber raw yarn is pretreated by low temperature and dilute acid. leaching, and then through the normal acid leaching and water washing process, within the process requirements of the present invention, the strength of the high silica glass fiber yarn produced by the production process of this invention is more than 15% higher than that of the previous process, and the strength Stability increased by more than 10%

Method used

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  • Production process of high-strength high-silicon dioxide glass fiber yarns

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) The ternary high-silica glass fiber precursor with a specification of BC8-24 is annealed, and annealed into a BC8-24×4Z110 yarn, and then plied to form a BC8-24×4×3S110 High silica fiberglass raw yarn.

[0022] (2) Wind the raw yarn of BC8-24×4×3S110 on a special yarn frame with a winding machine to make a yarn roll with a length of 2500 meters of raw yarn.

[0023] (3) Distribute the yarn rolls evenly in a suspended manner and place them in the acid leaching tank. There are 40 rolls in total. When the yarn roll is submerged, stop adding acid. After adding acid, start the acid-resistant pump to circulate and stir. After 0.5 hours, stop the pump to stop stirring, and then discharge the acid.

[0024] (4) After the acid is drained, add a hydrochloric acid solution with a concentration of 2.6N to the acid leaching tank. When the acid is immersed in the yarn roll, stop adding acid. , open the steam valve, and heat the acid solution by direct steam heating. When the ac...

Embodiment 2

[0037] (1) The ternary high-silica glass fiber precursor with a specification of BC9-33 is annealed, and annealed into a BC9-33×4Z110 yarn, and then plied to form a BC8-33×4×2S110 High silica fiberglass raw yarn.

[0038] (2) Wind the raw yarn of BC9-33×4×2S110 on a special yarn frame with a winding machine to make a yarn roll with a length of 2400 meters of raw yarn.

[0039] (3) Distribute the yarn rolls evenly in a suspended manner and place them in the acid leaching tank. There are 40 rolls in total. Stop adding acid when the yarn roll is submerged. After adding acid, start the acid-resistant pump to circulate and stir. After 45 minutes, stop the pump, stop stirring, and then discharge the acid.

[0040] (4) After the acid is drained, add a hydrochloric acid solution with a concentration of 2.5N to the acid leaching tank. When the acid is immersed in the yarn roll, stop adding acid. , open the steam valve, and heat the acid solution by direct steam heating. When the acid...

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Abstract

The invention discloses a production process of high-strength high-silicon dioxide glass fiber yarns. The production process comprises the steps of (1) preparing borosilicate glass fiber protofilaments to be high-silicon dioxide glass fiber yarns; (2) preparing yarns to be yarn coils; (3) conducting the first step of acid leach treatment; (4) conducting the second step of acid treatment; (5) conducting hot water washing; (6) washing with water at the room temperature; and (7) measuring the acid content state of the surface of each yarn by using pH test paper, when the pH value is smaller than 5, repeating the step (6), and when the pH value is larger than 5, finishing the water washing; (8) conducting high-temperature hot setting treatment; (9) conducting drying treatment; and (10) winding the dried yarns on a tower tube by a filament dividing and winding device. According to the high-silicon dioxide glass fiber yarns produced by the process provided by the invention, the appearance quality is superior to that of the product obtained by a conventional high-silicon dioxide glass fiber yarn production process, the quality stability is improved, the strength of the high-silicon dioxide glass fiber yarns produced by the process is improved by 15%, the quality stability of the of the high-silicon dioxide glass fiber yarns produced by the process is improved by more than 10%, so that the occasion of the using field of the yarns is expanded.

Description

technical field [0001] The invention relates to a production process of high-strength and high-silica glass fiber yarn, which belongs to the field of special new materials. Background technique [0002] High-silica glass fiber yarn has excellent properties such as temperature resistance and ablation resistance, and is widely used in aerospace, aviation and other fields. At present, the production process of high-silica glass fiber yarn at home and abroad: the high-silica glass fiber raw yarn is wound on a device, and the device and the yarn are put into the acid leaching tank together, and then a certain concentration of acid is added to the tank, and the acid is heated to The temperature is called for, held until the acid leach is complete, then the yarn is rinsed in the sink until the rinse is complete. In this process, the initial acid leaching speed is too fast, which is easy to cause the reaction product B 2 o 3 、Na 2 The concentration of O, etc. in the solution is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/18D02G3/40D06B9/04D06C7/02
Inventor 贺新民尤勇钟英杰贺广东刘玉军贺恒山贺广州杨巧燕
Owner JIANGSU HENGZHOU SPECIAL GLASS FIBER MATERIAL