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Fiber-reinforced plastic molded article, manufacturing method thereof, and elevator

A technology of reinforced plastics and manufacturing methods, applied to elevators in buildings, building structures, building components, etc., to achieve high sound-absorbing characteristics, high rigidity, sound-absorbing and sound-insulating properties

Inactive Publication Date: 2015-12-09
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] In this case, although a highly rigid sound-absorbing and sound-insulating composite structure is obtained, it is necessary to bond or fix the continuous cell on one surface of the sandwich structure, and it is necessary to obtain rigidity and sound insulation. The sound-absorbing thickness has a problem that the whole becomes a thick-walled sound-absorbing and sound-insulating composite structure

Method used

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  • Fiber-reinforced plastic molded article, manufacturing method thereof, and elevator
  • Fiber-reinforced plastic molded article, manufacturing method thereof, and elevator
  • Fiber-reinforced plastic molded article, manufacturing method thereof, and elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0055] figure 1 It is a cross-sectional view showing a fiber-reinforced plastic molded article 1 (hereinafter referred to as an FRP molded article) according to Embodiment 1 of the present invention.

[0056] This FRP molded article 1 has: an open cell body 2; a hard closed cell body 3 covering the open cell body 2; a fiber reinforced plastic (hereinafter Abbreviated as FRP) 4. A resin is impregnated and cured in this FRP4.

[0057] Formed on the lower surface of the FRP molded body 1 are a plurality of image 3 The openings 5 ​​are arranged as shown, and the interconnected cell 2 communicates with the outside through the openings 5 ​​.

[0058] Hard independent cells 3 by Figure 5 The shown upper flat plate portion 3a as the first flat portion, the lower flat plate portion 3b as the second flat portion, and Figure 4 As shown, the open-cell body 2 is formed by the supporting part 3c of the divided part 2a divided into quadrilaterals.

[0059] Here, the FRP4 that is the...

Embodiment approach 2

[0085] Figure 9 It is a cross-sectional view showing an FRP molded body 1A according to Embodiment 2 of the present invention.

[0086] In the present embodiment, in the FRP molded body 1A, in the hard closed cell body 3A, the open cell body 2 is divided into triangular divided portions 2 a by the support portion 3Ac.

[0087] Other structures are the same as those in Embodiment 1.

[0088] The FRP molded body 1A of the present embodiment has higher rigidity than the FRP molded body 1 when the area of ​​the hard closed cell body 3A is the same as that of the hard closed cell body 3 of the first embodiment.

[0089] Other functions and effects are the same as those of the FRP molded article 1 of the first embodiment.

Embodiment approach 3

[0091] Figure 10 It is a cross-sectional view showing an FRP molded body 1B according to Embodiment 3 of the present invention. In this embodiment, an aluminum metal film 20 is pasted on the upper surface and the lower surface of FRP 4 using an adhesive material 21 .

[0092] Other structures are the same as those in Embodiment 1.

[0093] Since the metal thin film 20 is pasted on the upper surface and the lower surface of the FRP molded body 1B of this embodiment, compared with Embodiment 1, rigidity and flame retardancy can be further improved as a sandwich structure.

[0094] In addition, the metal thin film 20 may be pasted on only one surface.

[0095] Other functions and effects are the same as those of the FRP molded article 1 of the first embodiment.

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PUM

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Abstract

Disclosed is a fiber-reinforced plastic molding that is thin with high rigidity and has excellent sound absorbency and sound insulation. The fiber-reinforced plastic molding (1) is equipped with an open-cell foam material (2) that absorbs sound waves, a hard closed-cell foam material (3) covering the surfaces of the open-cell foam material (2), and a fiber-reinforced plastic (4) that reflects sound waves and is disposed on both sides of the hard closed-cell foam material (3), wherein the open-cell foam material (2) is exposed to the outside through openings (5) formed in the hard closed-cell foam material (3) and the fiber-reinforced plastic (4), and sound waves that enter through the openings (5) are absorbed by the open-cell foam material (2).

Description

technical field [0001] The present invention relates to a fiber-reinforced plastic molded article excellent in sound insulation and sound absorption, a method for producing the same, and an elevator in which the fiber-reinforced plastic molded article is used for a car wall or a fairing. Background technique [0002] Fiber Reinforced Plastics (FRP: Fiber Reinforced Plastics) are attracting attention in various industrial fields as lightweight and high-strength raw materials. [0003] In addition, a sandwich structure in which FRP skin panels are arranged on both surfaces of a core material is known as a structure capable of achieving high rigidity. [0004] As the core material used for the sandwich structure, it is preferable to use a porous body from the viewpoint of ensuring light weight and the like. [0005] Porous bodies are classified into closed-cell bodies composed of closed cells and open-cell bodies composed of continuous cells. The closed cells are excellent in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/28B66B11/02E04B1/82
CPCB66B11/0226E04B2001/8433
Inventor 鲛岛壮平竹谷元松本迪齐久保一树粟野悠平马渊贵裕高桥市弥
Owner MITSUBISHI ELECTRIC CORP
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