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A grid layup structure and manufacturing method for optimizing the performance of composite material laminates

A technology of composite material layer and manufacturing method, which is applied in the field of composite materials, can solve the problems of weak overall performance of composite material laminates, achieve the effects of improving interlayer shear performance, promoting development, and increasing tensile strength

Active Publication Date: 2017-05-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The technical purpose of the present invention is to design a 2.5-dimensional grid layer structure and manufacturing method that can enhance the performance of composite material laminates for the problem of weak overall performance of existing composite material laminates

Method used

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  • A grid layup structure and manufacturing method for optimizing the performance of composite material laminates
  • A grid layup structure and manufacturing method for optimizing the performance of composite material laminates

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Embodiment Construction

[0023] In order to clarify the technical scheme and technical purpose of the present invention, the present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 As shown, a method for making a grid lay-up structure for optimizing the performance of composite material laminates is characterized in that it comprises the following steps:

[0025] 1) Set the target lay-up structure size, use a slitting machine to cut the large carbon fiber reinforced resin-based prepreg raw material into rectangular strips of a certain width and roll them up according to the target lay-up structure size. The length is 2 of the width of the rectangular strip m -1 times, the width of the target laminate is 2 times the width of the rectangular strip n -1 times, m, n are non-zero natural numbers, m, n can be equal or unequal, that is, the length and width of the target layer structure can be unequal;

[0026] 2)...

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Abstract

The invention discloses a grid stacking structure capable of optimizing the performances of a composite material laminated plate and a production method. The stacking structure is characterized by being composed of a plurality of perpendicular longitudinal prepreg strips and transversal prepreg strips in a crossing manner, wherein the length of the stacking structure is 2<m>-1 times of the width of rectangular strips, the width of the stacking structure is 2<n>-1 times of the width of the rectangular strips, and m and n are natural numbers. According to the stacking structure and the production method disclosed by the invention, the feature of structure designability of composite materials is ingeniously utilized, and a reasonable stacking design is carried out in a new stacking manner, so as to design a structure which is approximately three-dimensionally weaved, and on the premise of using the same prepreg, the tensile strength, flexural strength, shear strength and the like of the stacking structure can be obviously improved compared with the existing stacking structure after being subjected to curing formation; and the tensile, flexural and interlayer shear performances of the laminated plate obtained in the weaving manner are improved to a certain extent relative to conventional laminated plates, thus achieving great promotion significance on development of a three-dimensional enhancement technology for the composite materials.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a technology for enhancing the performance of a composite material laminated board member, in particular to a grid layer structure and a manufacturing method for optimizing the performance of a composite material laminated board member. Background technique [0002] Advanced composite materials represented by carbon fiber reinforced resin-based composite materials have outstanding advantages such as light weight, high strength, high modulus, fatigue resistance, corrosion resistance, integration of structure and function, integration of design and manufacturing, and easy molding of large components. , Aerospace and other fields have been widely used. However, the overall performance of carbon fiber reinforced resin matrix composite laminate components is weak, which limits its application to a certain extent. [0003] In order to enhance the overall structural performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/22B29C70/38
CPCB29C70/224B29C70/386
Inventor 还大军李勇许爱华肖军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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