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Interlayer, associated reinforcement structure, composite, and method

A technology for strengthening structures and composite materials, applied in sandwich toughening. It can solve the problem of difficult to control the degree of attachment between the interlayer and the carbon fiber reinforcement layer.

Pending Publication Date: 2021-10-12
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Unfortunately, it is difficult to control the degree of attachment of the interlayer containing thermoplastic fibers to the carbon fiber reinforcement

Method used

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  • Interlayer, associated reinforcement structure, composite, and method
  • Interlayer, associated reinforcement structure, composite, and method
  • Interlayer, associated reinforcement structure, composite, and method

Examples

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Embodiment Construction

[0021] The following detailed description refers to the accompanying drawings, which illustrate specific examples of the present disclosure. Other examples having different structures and operations do not depart from the scope of the present disclosure. In different drawings, the same reference numerals may denote the same elements or parts.

[0022] see figure 1 , an example of the disclosed interlayer, generally designated 10 , is shown in side cross-sectional view and includes a plurality of first thermoplastic filaments 12 and a plurality of second thermoplastic filaments 14 . The first thermoplastic filaments 12 may be mixed with the second thermoplastic filaments 14 . As used herein, the term "mixing" refers to the cohesion that occurs when filaments intersect and entangle with other filaments.

[0023] Optionally, interlayer 10 may additionally include a plurality of non-thermoplastic filaments 16 . The non-thermoplastic filaments 16 may be mixed with the first the...

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Abstract

The invention relates to an interlayer, an associated reinforcement structure, a composite, and a method. The interlayer includes a plurality of first thermoplastic filaments having a first melting temperature and a plurality of second thermoplastic filaments having a second melting temperature, wherein the second melting temperature is substantially greater than the first melting temperature.

Description

technical field [0001] The present application relates to composite materials, and more specifically to sandwich toughening of fiber reinforced polymer matrix composites such as carbon fiber reinforced plastics. Background technique [0002] Fiber-reinforced polymer matrix composites, such as carbon fiber-reinforced plastics, tend to exhibit high strength at relatively light weight. Accordingly, such fiber reinforced polymer matrix composites are commonly used in a variety of applications (eg, structural applications) throughout the aerospace industry, as well as other industries (eg, automotive and marine). [0003] It has been known for some time that fiber-reinforced polymer matrix composites can be strengthened by incorporating interlayers between the reinforcing layers of the reinforced structure. For example, interlayers containing thermoplastic fibers are attached to dry carbon fiber reinforcements to increase the toughness of the resulting fiber-reinforced polymer m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/02B32B27/12B32B27/34B32B27/28B32B27/36B32B27/40B32B27/32B32B27/30B32B17/02B32B17/12B32B15/02B32B15/14
CPCB32B5/08B32B5/26B32B15/02B32B15/14B32B2260/046B32B2260/021B32B2262/0246B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/0292B32B2262/101B32B2262/105B32B2262/106B32B2262/14B32B5/02B32B5/024B32B2262/103B32B2605/08B32B2250/20B32B2307/516B32B5/14B32B5/022B32B2605/18B32B5/028B32B2262/02B32B2250/03B32B2605/12B32B7/05B32B2307/558B32B7/02B32B2307/30B32B2250/05B32B2307/718B32B2270/00
Inventor B·P·亚当森G·霍尔登C·A·豪
Owner THE BOEING CO