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Foaming cone for loudspeaker and preparation method and application thereof

A loudspeaker and paper cone technology, applied in the field of foam paper cones for loudspeakers and their preparation, can solve the problems of raw and auxiliary material ratio and preparation method of undisclosed foam paper cones.

Active Publication Date: 2021-07-06
GUOGUANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ratio of raw and auxiliary materials and the preparation method of the foaming paper cone have not been disclosed

Method used

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  • Foaming cone for loudspeaker and preparation method and application thereof
  • Foaming cone for loudspeaker and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0061] This embodiment provides a foamed paper cone for a speaker, and the foamed paper cone for a speaker is prepared by the following preparation method:

[0062] (1) Add 50 parts of bleached kraft wood pulp into the beater for beating. When the set beating degree of 30°SR is reached, add 8 parts of para-aramid fiber and continue beating for 30 minutes to make the pulp and para-aramid fiber Mix well, and get a 30°SR slurry after water filtration; mix 3 parts of quaternary ammonium cationic starch with 300 parts of water, heat and react at 90°C for 15 minutes, and obtain cured cationic starch;

[0063] (2) Dilute the slurry obtained in step (1) with water to obtain a fiber suspension, add 40 parts of mica and 16 parts of azodicarbonamide in turn while stirring, and after they are mixed evenly, add step (1) The cationic starch after the ripening that obtains is continued to stir 15min with the rotating speed of 120rpm, obtains the wet embryo of paper cone after filtering;

[...

Embodiment 2

[0067] This embodiment provides a foamed paper cone for a speaker, and the foamed paper cone for a speaker is prepared by the following preparation method:

[0068] (1) Add 60 parts of cotton pulp into the beater for beating. When the set beating degree of 40°SR is reached, add 10 parts of para-aramid fiber and continue beating for 30 minutes to fully mix the pulp and para-aramid fiber. Obtain the slurry of 41 ° SR after water filtration;

[0069] (2) Dilute the slurry obtained in step (1) with water to obtain a fiber suspension. While stirring, add 50 parts of mica and 14 parts of azodicarbonamide in turn. After mixing evenly, add 3 parts of cationic benzene Acrylic emulsion, continue to stir for 15min with the rotating speed of 100rpm, obtain paper cone wet embryo after filtering;

[0070] (3) Place the wet paper cone embryo obtained in step (2) in a high-temperature mold, press, and dry at 230° C. for 20 seconds to obtain a paper cone blank;

[0071] (4) Using a die-cutti...

Embodiment 3

[0073] This embodiment provides a foamed paper cone for a speaker, and the foamed paper cone for a speaker is prepared by the following preparation method:

[0074] (1) Add 50 parts of bamboo pulp into the beater for beating. When the set beating degree of 30°SR is reached, add 10 parts of para-aramid pulp and continue beating for 30 minutes to make the pulp and para-aramid pulp fully Mix and filter to obtain 32°SR slurry; mix 2 parts of quaternary ammonium cationic starch with 200 parts of water, heat and react at 90°C for 15 minutes, and obtain cured cationic starch;

[0075] (2) Dilute the slurry obtained in step (1) with water to obtain a fiber suspension, while stirring, add 50 parts of mica and 20 parts of azodicarbonamide in turn, and after they are mixed evenly, add step (1) The cationic starch after the ripening that obtains, continue to stir with the rotating speed of 80rpm 15min, after filtering, obtain paper pot wet embryo;

[0076] (3) Place the wet paper cone bl...

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Abstract

The invention provides a foaming cone for a loudspeaker and a preparation method and application of the foaming cone. The foaming cone for the loudspeaker is prepared from the following raw materials in parts by weight: 40-60 parts of paper pulp, 40-60 parts of mica, 2-10 parts of reinforced fibers, 8-20 parts of a foaming agent and 1-3 parts of a sizing agent. The foaming cone is prepared from the paper pulp, the mica, the reinforced fibers, the foaming agent and the sizing agent according to a specific ratio, the components have a synergistic effect and are matched with one another, and reasonable technological parameter setting is performed, so that the foaming cone which is low in density, high in strength, stable in structure and attractive in appearance is prepared.

Description

technical field [0001] The invention belongs to the technical field of loudspeaker manufacturing, and in particular relates to a foamed paper cone for a loudspeaker and a preparation method and application thereof. Background technique [0002] The frequency response performance of the loudspeaker depends on the performance of the paper cone, and the performance of the paper cone depends on the material, geometry and processing technology of the paper cone. In the production of paper cones, the following requirements are often put forward for the paper cone materials: (1) The density ρ of the material should be small. The smaller the mass, the better the high-frequency characteristics of the speaker and the better its transient characteristics. (2) The mechanical strength of the material should be large, or the Young's modulus E of the material should be large. Combined with the first characteristic, it is required that the value of the specific elastic modulus E / ρ of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00
CPCH04R31/00Y02W90/10
Inventor 司景航王世伟谢守华黄汉雄
Owner GUOGUANG ELECTRIC
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