A method for preparing filament bundles with variable cross-section
A filament bundle and variable cross-section technology, applied in textiles and papermaking, yarn, adhesives, etc., can solve the problems of high manual participation, affecting the performance of composite windows, and high labor intensity
Active Publication Date: 2021-09-10
SHANDONG ZHONGHENG CARBON FIBER TECH DEV CO LTD
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Problems solved by technology
In this processing method, there are many tow breakages, which directly affect the performance of the composite window, and more manual involvement, high labor intensity, low efficiency, and poor product consistency
Method used
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The purpose of the present invention is to provide a method for preparing filament bundles with variable cross-sections, so as to solve the problems existing in the prior art, so that the yarns are not broken, the labor intensity is reduced, and the product consistency and work efficiency are improved.
[0021] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further d...
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Abstract
The invention discloses a method for preparing filament bundles with variable cross-sections, which specifically includes the following steps: 1. Monofilaments are combined, cut, carded, sized and dried to form continuous filament bundles, and the filament bundles are placed in The vertically arranged rubber rollers are used for processing, so that the filament bundles are transported under the traction of the traction device. 2. During the conveying process, the filament tow is cut into a set variable-section tow by a hob, and the variable-section tow is then subjected to sizing and drying to obtain a finished product. The preparation method of variable cross-section filament bundles of the present invention provides a new raw material preparation method for weaving or weaving, which makes the diameter-changing operation of filament bundles easy and efficient, and there are no broken filament bundles in the fabric processing process, which is effective. It is conducive to the play of fiber properties in composite materials, and provides technical support for the manufacture of composite fan blades and prefabricated surfaces with continuously variable cross-section or variable thickness, and is of great significance to the overall molding of aerospace related components.
Description
technical field [0001] The invention relates to the technical field of composite material prefabricated body manufacturing, in particular to a method for preparing filament bundles with variable cross-sections. Background technique [0002] Variable thickness or variable section or curved surface parts have important application value in aerospace field, such as engine blades. Generally, the continuous filament bundles are of equal cross-section, and the continuous filament bundles generally consist of 500-4800 monofilaments with a diameter of 1-20 μm, and the monofilaments are bonded together by a sizing agent. In engineering, there is a method of locally adding short tows (that is, adding yarn) to achieve the purpose of making the tow thicker, so as to meet the technical requirements of variable cross-section or variable thickness components. In this processing method, there are many tow breakages, which directly affect the performance of the composite window, and more ma...
Claims
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IPC IPC(8): D02G3/34D02G3/40
CPCD02G3/34D02G3/40D10B2101/06D10B2101/12
Inventor 吕明迪关昊辰杨朝坤
Owner SHANDONG ZHONGHENG CARBON FIBER TECH DEV CO LTD