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Continuous fiber self-reinforcing gradient lamination board and preparation method thereof

A continuous fiber and gradient layer technology, applied in the field of continuous fiber self-reinforced gradient laminate and its preparation, can solve problems such as difficulty in realization and lack of research, and achieve the effects of improving winding accuracy, saving time, and excellent mechanical properties

Inactive Publication Date: 2013-05-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current research on gradient materials is mainly ceramic-metal and other particle-reinforced gradient composite materials. Fiber-reinforced or slightly longer fiber-reinforced gradient composites, although some scholars have proposed laminated textile-structured gradient composites and conducted preliminary bending performance research, but this structure is difficult to achieve because the woven fabric is gradient, so No further research and widespread concern

Method used

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  • Continuous fiber self-reinforcing gradient lamination board and preparation method thereof
  • Continuous fiber self-reinforcing gradient lamination board and preparation method thereof
  • Continuous fiber self-reinforcing gradient lamination board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Single-layer board preparation: 10 kinds of single-layer boards with different volume percentages ranging from 11% to 50% were prepared by using cotton yarn shaking blackboard according to the density of shaking yarn;

[0028] 2. After optimization analysis, the volume content of single layer is selected as: 19% (1#), 25% (2#), 31% (3#)

[0029] Gradient laminates with two gradient directions were prepared, F1: [3# / 2# / 1#] s and F2:[1# / 2# / 3#] s , and prepared a common laminate (L: [2#] 6s ) for comparative tests (see the diagram for the structure of the gradient laminate figure 1 ). Prepare 5 samples of each type, perform the mechanical test according to GB / T1447-2005, and take the average value of 5 experiments. Specific steps are as follows:

[0030] Step 1: Filament Winding

[0031] 1>Use the cotton yarn shaking blackboard machine to evenly wind the fibers on the 1-3mm thick steel plate;

[0032] 2> Change the fiber winding density by adjusting the spinning...

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Abstract

The invention relates to a continuous fiber self-reinforcing gradient lamination board and a preparation method thereof. The fiber volume content and the material properties of the lamination board are in gradient distribution along the thickness direction of the lamination board, wherein the fiber volume content is changed from 10% to 60%; the volume content difference of all fiber layers is from 3% to 10%; and the lamination board is provided with 6 to 50 fiber layers. A yarn examining machine is utilized to wind the fibers; the fiber volume content is changed by changing the yarn reeling density; and the fibers are molten in a hot pressing manner to be molded into the lamination board. The obtained lamination board has various excellent mechanical properties, and especially the lateral tensile strength and the vertical and horizontal shearing strength can be enhanced by 10% to 20%. In addition, the preparation method is simple, low in energy consumption and easy in molding operation and can easily realize the mass production.

Description

technical field [0001] The invention belongs to the field of structural materials for engineering and its preparation, and in particular relates to a continuous fiber self-reinforcing gradient laminate and a preparation method thereof. Background technique [0002] For continuous fiber reinforced composite laminates, due to the excellent mechanical properties and strong designability of the fiber itself, it has a wide range of applications. However, generally continuous fiber reinforced composites have higher longitudinal tensile strength, but lower transverse tensile and shear strengths. At present, the influence of fiber ply direction on mechanical properties is mainly considered in the preparation and design of laminates, so the structural optimization analysis of composite materials with different ply angles is generally considered. In fact, in addition to the fiber ply angle, the fiber volume content also has a great influence on the mechanical strength of the laminate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/08B29C70/34B32B5/02B32B15/14
Inventor 晏雄栗丽张慧萍庄兴民
Owner DONGHUA UNIV
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