Impregnating compound for improving aging resistance of alumina continuous fibers, and preparation method and application thereof

A technology of continuous fiber and sizing agent, applied in the field of surface modification of inorganic ceramic fibers, can solve the problems of unsatisfactory improvement effect of fiber service cycle, inability to increase fiber wear resistance and mechanical properties, and insignificant anti-aging effect, and achieve good clustering. performance and lubricity, increased mechanical properties, low static electricity

Active Publication Date: 2020-10-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although polyvinyl butyral is disclosed in the above-mentioned prior art, how it is applied to alumina continuous fibers is not disclosed, and the formulation disclosed in the above-mentioned patent documents is directly used to coat alumina continuous fibers On the surface, there are the following defects: 1. The anti-aging effect is not obvious, and the improvement effect of the service life of the fiber and subsequent processing and use is not ideal. 2. The fiber cannot be bundled, and the wear resistance of the fiber cannot be increased to improve its mechanical properties.

Method used

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  • Impregnating compound for improving aging resistance of alumina continuous fibers, and preparation method and application thereof
  • Impregnating compound for improving aging resistance of alumina continuous fibers, and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0031] Example 1: A preparation process of a sizing agent for improving the aging resistance of alumina continuous fibers:

[0032] S1: dilute 0.5-2wt% polyvinyl butyral resin with 15-25 times of organic solvent, and stir for 0.5-2 hours;

[0033] S2: dilute 0.5-2wt% lubricant with 15-25 times of organic solvent, and stir for 0.5-2 hours;

[0034] S3: Dissolving 0.05-0.2wt% antistatic agent with 15-25 times of organic solvent, stirring time is 0.5-2h;

[0035]S4: The solutions in steps S1, S2, and S3 are sequentially added to the remaining organic solvent, mixed evenly, and stirred for 1-2 hours to obtain the sizing agent for improving the aging resistance of the alumina continuous fiber.

[0036] It can be understood that the properties of the PVB used are: the butyral content in the polyvinyl butyral resin is 45-50wt%, and the viscosity is 15-18mPa . s. The molecular weight is 280-310.

[0037] It can be understood that the mass percentages of all material components in t...

Embodiment 2

[0040] Example 2: Characterization:

[0041] The sizing agents in Example 1 were coated on the surface of the alumina continuous fibers at a coating rate of 1.4-1.9 wt%. Performance tests were performed on the continuous fibers coated with the sizing agents. The test results are shown in Table 1 below.

[0042] In this example, the performance of alumina continuous fibers after coating the sizing agent on the alumina continuous fiber precursors, and the performance of alumina continuous fibers (including fiber precursors and fibers coated with sizing agent) after aging at 100°C were tested respectively. Fiber properties, fiber properties after ultraviolet aging of alumina continuous fibers (including fiber precursors and fibers coated with sizing agent).

[0043] It can be understood that the alumina continuous fibers used in each embodiment are the same batch of finished fibers.

[0044] It can be understood that the aging method of alumina continuous fiber coated with sizin...

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Abstract

The invention discloses an impregnating compound for improving the aging resistance of alumina continuous fibers and a preparation method and application thereof. The impregnating compound comprises the following components in percentage by weight: 0.5-2% of polyvinyl butyral resin, 0.5-2% of a lubricant, and 0.05-0.2% of an antistatic agent, with the balance being an organic solvent. A film-forming agent adopted is an alcohol-soluble polymer, and the solution is a stable, transparent and uniform solution. After the impregnating compound is applied to the alumina continuous fibers, on one hand, the fibers can be prevented from being influenced by external environment aging, and the performance of the fibers is maintained; and on the other hand, the impregnating compound has an anti-aging effect after self film formation, the fibers have good mechanical properties, the wear resistance of the fibers can be improved, the fibers are soft while meeting the coating rate requirement, the appearance is kept bright and white for a long time, the mechanical properties are stable, and the requirements of subsequent textile processing can be met.

Description

technical field [0001] The application belongs to the technical field of surface modification of inorganic ceramic fibers, and in particular relates to a sizing agent for improving the aging resistance of alumina continuous fibers and its preparation method and application. Background technique [0002] Alumina continuous fiber is a kind of new high-performance ceramic fiber, which has excellent properties such as high temperature resistance, corrosion resistance, high strength and high modulus, and has strategic significance in military industry, aerospace and other fields. But at the same time, alumina continuous fiber is a brittle material with low bending strength. Alumina continuous fibers are prone to surface cracks and defects during a series of forming processes such as spinning, sintering, and drawing, and the size, number, and distribution of defects and cracks will affect the properties of the fibers, and it is impossible to obtain perfect fibers in this process. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/83
CPCC04B41/83C04B41/4873C04B41/4896C04B41/009C04B41/46C04B41/4535C04B41/4584C04B14/4625
Inventor 王安琪贾玉娜陈代荣焦秀玲
Owner SHANDONG UNIV
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