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Braided fabric needled felt aggregate and preparation method thereof

A knitted fabric and needle-punched felt technology is applied in the field of knitted fabric needle-punched felt aggregate and its preparation, which can solve the problems of long production cycle, excessive labor, and fiber waste, eliminate thermal stress and thermal strain, and save fiber raw materials. , good mechanical properties

Inactive Publication Date: 2019-06-11
重庆璨月新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using continuous functional fibers such as glass fiber, carbon fiber, etc. to weave large or thick pieces, it often requires more labor and a lot of working time. cost of production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Braided fabric needled felt aggregate and preparation method thereof
  • Braided fabric needled felt aggregate and preparation method thereof
  • Braided fabric needled felt aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0037] The present invention also provides a method for preparing a knitted fabric needle felt assembly, comprising the following steps:

[0038] Composite the continuous functional fiber braided fabric layer and the continuous functional fiber bulked yarn coarse braided fabric layer to obtain an integrated fabric;

[0039] Combining the chopped functional fiber needled felt layer with the continuous functional fiber bulked yarn coarse braid layer of the integrated fabric through needle punching to obtain a braided needle felt assembly.

[0040] In the invention, the continuous functional fiber braided fabric layer and the continuous functional fiber bulked yarn coarse braided fabric layer are combined to obtain an integrated fabric.

[0041]In the present invention, the continuous functional fiber braid layer is a single-layer or more than two-layer long fiber bundle braid commonly used in the field, which can be made of continuous functional fibers by weaving or braiding. T...

Embodiment 1

[0053] The 12K carbon fiber is made into a single-layer two-up and one-down twill weave fabric by weaving method, and its thickness is 1.5mm; Two upper and lower twill coarse braids connected by two upper and lower twill fabrics, the thickness of which is 6mm, constitutes an integrated fabric;

[0054] The chopped carbon fiber with a length of 55mm and 6K is carded into a net in the non-woven technology to make a needle-punched felt with a thickness of 8mm, and then the inner surface of the integrated fabric is attached to the inner core mold of the flat plate, and passed Acupuncture: the chopped carbon fibers in the needle felt are inserted into the bulked yarn roving layer to obtain a flat plate fiber assembly; wherein, the process conditions of the needle punch are: the needle punch density is 20 needles / cm2 ; Acupuncture depth is 25mm.

[0055] figure 1 It is a schematic diagram of the needling action in the preparation method of the woven needle felt assembly provided i...

Embodiment 2

[0058] The 12K carbon fiber is made into a single-layer plain weave fabric with one up and one down by weaving method, and its thickness is 1mm; An upper and a lower plain weave coarse braid connected with an upper and a lower plain weave, the thickness of which is 6 mm, forming an integrated fabric;

[0059] The chopped carbon fiber with a length of 60mm and 12K is carded into a net in the non-woven technology to make a needle-punched felt with a thickness of 6mm, and then the inner surface of the integrated fabric is attached to the cylindrical inner mandrel, and passed Acupuncture: the chopped carbon fibers in the needle-punched felt are inserted into the bulked yarn roving layer to obtain a cylindrical fiber aggregate; wherein, the process conditions of the needle-puncture are: the needle-punched density is 50 needles / cm2; The acupuncture depth is 8mm.

[0060] figure 2 Schematic diagram of the needling action in the preparation method of the woven needle felt assembly ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a braided fabric needled felt aggregate and a preparation method thereof. The method comprises the steps: compounding a continuous functional fiber braided fabric layer with a continuous functional fiber bulk yarn coarse braided fabric layer to obtain an integrated fabric; and then, compounding a chopped functional fiber needled felt layer with the continuous functional fiber bulk yarn coarse braided fabric layer of the integrated fabric to obtain the braided fabric needled felt aggregate. The braided fabric needled felt aggregate provided by the invention is of a fiberaggregate structure which is light in weight and high in strength and has stepped density change, the weight of the braided fabric needled felt aggregate can be reduced by 30% or above than that of afully-braided fabric on the premise that the volumes are equal, but the mechanical properties are equivalent, and the mechanical properties of the braided fabric needled felt aggregate are better thanthose of a fully-chopped fiber needled felt; and meanwhile, the fiber raw materials can also be saved by 30% or above, the preparation process is simple, and the production period is relatively short.

Description

technical field [0001] The invention relates to the technical field of fiber materials, in particular to a knitted fabric needle-punched felt assembly and a preparation method thereof. Background technique [0002] Continuous functional fiber braids, such as glass fiber braids and carbon fiber braids, are fiber aggregate materials with light weight and excellent mechanical properties, and have played a huge role in the fields of national defense and civil industry. In many engineering applications, generally only one surface of the continuous functional fiber braid is needed, that is, the working surface, and the corresponding other surface is the non-working surface. The requirements for the working surface of continuous functional fiber braids are that the weaving texture is regular, the pattern is consistent and tidy, and the fiber breakage and hair ends are less; for its non-working surface, it is generally required to have a certain Z-direction connection, and there is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B17/02B32B17/12B32B9/04B32B5/06B32B37/00
Inventor 尚田元
Owner 重庆璨月新材料有限公司
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