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Carbon fiber-containing paper cone for loudspeaker and preparation method thereof

A loudspeaker and carbon fiber technology, applied in the direction of fiber diaphragm, synthetic cellulose/non-cellulose material pulp/paper, non-fiber pulp addition, etc., can solve the problem of inability to produce caliber, hidden danger of speaker cone delamination, weak binding force, etc. problems, to achieve strong filling effect, improve mechanical properties, and improve bulk thickness

Active Publication Date: 2020-11-10
GUOGUANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the prepared paper cone is limited by the inherent thickness of the carbon fiber cloth, and it is impossible to produce a paper cone with a smaller diameter and a thinner thickness.
Moreover, the bonding force between carbon fiber cloth and paper fibers is weak, and there is a hidden danger of paper cone delamination when the speaker works under high-strength conditions

Method used

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  • Carbon fiber-containing paper cone for loudspeaker and preparation method thereof
  • Carbon fiber-containing paper cone for loudspeaker and preparation method thereof
  • Carbon fiber-containing paper cone for loudspeaker and preparation method thereof

Examples

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Effect test

Embodiment 1

[0054] This embodiment provides a paper cone for a speaker containing carbon fiber. The raw materials for the preparation of the paper cone for a speaker containing carbon fiber include the following components in parts by weight:

[0055]

[0056] The preparation method of the described carbon fiber-containing loudspeaker cone comprises the following steps:

[0057] (1) Mix and beat unbleached kraft wood pulp and cotton pulp to obtain component A with a knockdown degree of 35°SR; dilute the cationic styrene-acrylic emulsion with 10 times of water, mix it with carbon fiber, and disperse it at 2000rpm for 40min, Get component B;

[0058] (2) After mixing component A and component B obtained in step (1), add water to dilute, the amount of water added is 10 times the total mass of component A and component B, filter to obtain paper Basin embryo;

[0059] (3) placing the paper cone blank obtained in step (2) in a high-temperature mold, pressing, and drying at 120° C. to obtai...

Embodiment 2

[0062] This embodiment provides a paper cone for a speaker containing carbon fiber. The raw materials for the preparation of the paper cone for a speaker containing carbon fiber include the following components in parts by weight:

[0063]

[0064]

[0065] The preparation method of the described carbon fiber-containing loudspeaker cone comprises the following steps:

[0066] (1) Mix and beat unbleached kraft wood pulp and cotton pulp to obtain component A with a knockdown degree of 30°SR; dilute the cationic styrene-acrylic emulsion with 10 times of water, mix it with carbon fiber, and disperse it at 2000rpm for 40min, Get component B;

[0067] (2) After mixing component A and component B obtained in step (1), add water to dilute, the amount of water added is 10 times the total mass of component A and component B, filter to obtain paper Basin embryo;

[0068] (3) placing the paper cone blank obtained in step (2) in a high-temperature mold, pressing, and drying at 130°...

Embodiment 3

[0071] This embodiment provides a paper cone for a speaker containing carbon fiber. The raw materials for the preparation of the paper cone for a speaker containing carbon fiber include the following components in parts by weight:

[0072]

[0073] The preparation method of the described carbon fiber-containing loudspeaker cone comprises the following steps:

[0074] (1) Mix and beat unbleached kraft wood pulp and cotton pulp to obtain component A with a knockdown degree of 25°SR; dilute the cationic styrene-acrylic emulsion with 10 times of water, mix it with carbon fiber, and disperse it at 2000rpm for 40min, Get component B;

[0075] (2) After mixing component A and component B obtained in step (1), add water to dilute, the amount of water added is 10 times the total mass of component A and component B, filter to obtain paper Basin embryo;

[0076] (3) placing the paper cone blank obtained in step (2) in a high-temperature mold, pressing, and drying at 140° C. to obtai...

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Abstract

The invention provides a carbon fiber-containing paper cone for a loudspeaker and a preparation method thereof The loudspeaker cone containing the carbon fibers is prepared from the following raw materials: unbleached sulfate wood pulp, cotton pulp, carbon fibers and cationic styrene-acrylic emulsion. The paper cone for the loudspeaker is small in density and high in modulus, the frequency range of piston vibration of the loudspeaker can be expanded, under the condition that the thickness of the paper cone is the same, the output sound pressure level is high, and the waterproof performance ofthe paper cone is excellent.

Description

technical field [0001] The invention belongs to the technical field of loudspeaker manufacturing, and in particular relates to a paper cone for a loudspeaker containing carbon fibers and a preparation method thereof. Background technique [0002] The paper cone is a key part of the speaker vibration system, and the performance of the paper cone determines the effective frequency range, distortion performance and sound quality of the speaker to a large extent. The loudspeaker cone requires the density of the material to be small and the Young's modulus of the material to be large. Carbon fiber has low density and strong rigidity, and it is expected to improve the performance of the paper cone when applied to the speaker cone. The main raw material of the paper cone is plant fiber, which endows the paper cone with natural hydrophilicity, resulting in poor waterproof performance of the paper cone. After the paper cone absorbs water and gets damp, on the one hand, the mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/04D21H11/12D21H13/50D21H17/37D21H21/08D21H21/16D21J3/10H04R7/12H04R31/00
CPCD21H11/04D21H11/12D21H13/50D21H17/37D21H21/08D21H21/16D21J3/10H04R7/12H04R31/003H04R2307/021H04R2307/029H04R2307/023
Inventor 司景航王世伟谢守华黄汉雄
Owner GUOGUANG ELECTRIC
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