A kind of hollow box-shaped reinforcement and preparation method thereof, and preparation method of hollow box

A reinforcement and hollow technology, applied in textiles, papermaking, textiles, fabrics, etc., can solve the problems of low rigidity of hollow box-shaped structural parts, scattered box top and box body, poor mechanical properties, etc.
CN112538679BActive Publication Date: 2022-07-12NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING FIBERGLASS RES & DESIGN INST CO LTD
Publication Date
2022-07-12

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Abstract

The invention discloses a hollow box-shaped reinforcement, a preparation method thereof, and a preparation method of the hollow box. The hollow box preform comprises an integrally woven box bottom and an integrally woven box body; The two side walls that are bent and extended on both sides and the first connecting portion of the bottom of any side wall that is bent outward, the first connecting portion is laminated and connected to the bottom of the box; the box body and the box A hollow channel is enclosed between the bottoms. Because the box body and the box bottom are integrally woven, the box body forms the box top, the two side walls of the box, and the first connecting part, and the side walls of the box will not be scattered; The first surface is attached and connected; the hollow box-shaped reinforcement is injected into the matrix and then cured and formed, and the side wall of the box is integrated to improve the strength of the side wall of the box; the first surface is attached to the connecting surface and connected, thereby making the box body A surface connection is formed with the bottom of the box to improve the strength and mechanical properties of the hollow box.
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Description

technical field

[0001] The invention belongs to the general technical field of weaving and manufacturing fiber reinforced structures, and in particular relates to a hollow box-shaped reinforcement and a preparation method thereof, and a preparation method of a hollow box. Background technique

[0002] At present, the preparation of high-strength and high-modulus structural parts is mostly made of composite materials. Generally, a fiber preform is prepared by a weaving method, and then an injection molding matrix is ​​used to densify the fiber preform to obtain a composite structure. For example, the fibers can be glass fibers, carbon fibers or ceramic fibers, and the matrix can be a resin material.

[0003] For example, Chinese patent document CN104395515B discloses a method for preparing a hollow box-shaped structural member, wherein the cross-section of the hollow box-shaped structural member is an inverted π type, and the tops of the two side walls of the inverted π are c...

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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