Carbon fiber dome and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-2018302719-A1
Application number	US-201715646777-A
Country	US
Kind code	A1
Filing date	Jul 11, 2017
Priority date	Apr 13, 2017
Publication date	Oct 18, 2018
Grant date	—

Abstract

The present disclosure relates to a carbon fiber dome including at least two carbon fiber prepreg layers, and the at least two carbon fiber prepreg layers include at least two types of carbon fiber materials. The present disclosure further relates to a method for manufacturing the carbon fiber dome, including: impregnating at least two types of carbon fiber materials with a prepreg resin to form at least two carbon fiber prepreg layers; and laminating the at least two carbon fiber prepreg layers after being impregnated. The carbon fiber prepreg is used to substitute the aluminum foil, thus, the strength is improved, the thickness is reduced and the sounding quality is improved, further, the carbon fiber material prepreg layers tightly adheres to each other to form an integrated structure, so that splitting of layers is avoided, and the dome has better water-proof effect and longer service life.

First claim

1 . A carbon fiber dome, comprising at least two carbon fiber prepreg layers, wherein the at least two carbon fiber prepreg layers comprise at least two types of carbon fiber materials, each of the at least two carbon fiber prepreg layers comprises a type of carbon fiber material and a prepreg resin, the prepreg resin comprises at least one of poly (p-phenylenebenzobisoxazole) and poly-p-phenylene terephthamide.

2 . The carbon fiber dome as described in claim 1 , where a thickness of the carbon fiber dome is 40˜250 μm.

3 . The carbon fiber dome as described in claim 2 , wherein a thickness of the carbon fiber dome is 80˜150 μm.

4 . The carbon fiber dome as described in claim 1 , wherein an included angle between carbon fibers of each two adjacent carbon fiber prepreg layers is within a range of 0°˜90°.

5 . The carbon fiber dome as described in claim 1 , wherein a thickness ratio of each two adjacent carbon fiber prepreg layers is within a range of 1:20˜1:1.

6 . The carbon fiber dome as described in claim 1 , wherein a tensile modulus of each type of carbon fiber material is greater than 200 Gpa.

7 . (canceled)

8 . The carbon fiber dome as described in claim 1 , wherein the at least two types of carbon fiber materials comprise M-series carbon fibers and T-series carbon fibers.

9 . The carbon fiber dome as described in claim 8 , comprising a top carbon fiber prepreg layer, a middle carbon fiber prepreg layer and a lower carbon fiber prepreg layer, and the top carbon fiber prepreg layer, the middle carbon fiber prepreg layer and the lower carbon fiber prepreg layer are sequentially stacked, the middle carbon fiber prepreg layer uses M55 carbon fiber, the top carbon fiber prepreg layer and the lower carbon fiber prepreg layer respectively use T300 carbon fiber.

10 . The carbon fiber dome as described in claim 9 , wherein a thickness of the middle carbon fiber prepreg layer is 80 μm, a thickness of each of the top carbon fiber prepreg layer and the lower carbon fiber prepreg layer is 10 μm.

11 . A method for manufacturing the carbon fiber dome according to claim 1 , comprising steps of:
impregnating at least two types of carbon fiber materials with a prepreg resin to form at least two carbon fiber prepreg layers; and laminating the at least two carbon fiber prepreg layers after being impregnated.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Di xun
• Zhao Bin

Classifications

• C08J2381/04

  Polysulfides · CPC title

• H04R31/003 Primary

  for diaphragms or their outer suspension · CPC title

• B32B2250/04

  4 layers · CPC title

• B32B2262/106

  Carbon fibres, e.g. graphite fibres · CPC title

• B32B2250/03

  3 layers · CPC title