Loudspeaker cone and preparation method and application thereof
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A loudspeaker and paper cone technology, applied in the field of loudspeakers, can solve the problems of destroying the film-forming continuity of other paper additives, affecting the sound quality of the loudspeaker, and reducing the mechanical properties of the paper cone, etc. The effect of surface free energy
Active Publication Date: 2019-12-31
GUOGUANG ELECTRIC
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Problems solved by technology
[0006] However, in the prior art, most waterproof and moisture-proof agents contain a large amount of inorganic fillers, which greatly increases the weight of the paper, and may destroy the film-forming continuity of other paper additives, and reduce the mechanical properties of the paper cone; in addition , the addition of inorganic fillers will change the proportion of various pulps in the paper cone, affecting the sound quality of the speaker
More importantly, the waterproof and moisture-proof agents in the prior art can only control the water absorption rate of the paper cone, but cannot make the paper cone completely impermeable, so that the paper cone still cannot be used in harsh environments such as underwater
Method used
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Embodiment 1
[0049] This embodiment provides a speaker cone, the preparation method is as follows:
[0050] (1) Add cationic styrene-acrylic emulsion in paper pulp, the addition is 10% of the absolute dry pulp quality, stir; Continue to add emulsified paraffin in the slurry after 15min, the addition is 2% of the absolute dry pulp quality, stir evenly, Obtain prefabricated slurry;
[0051] (2) The prefabricated slurry obtained in step (1) is scooped out, hot-pressed, and punched to obtain the speaker cone.
Embodiment 2
[0053] This embodiment provides a speaker cone, the preparation method is as follows:
[0054] (1) Add cationic styrene-acrylic emulsion in paper pulp, the addition is 5% of dry pulp quality, stir; Continue to add emulsified paraffin in pulp after 15min, the addition is 5% of dry pulp quality, stir evenly, Obtain prefabricated slurry;
[0055] (2) The prefabricated slurry obtained in step (1) is scooped out, hot-pressed, and punched to obtain the speaker cone.
Embodiment 3
[0057] This embodiment provides a speaker cone, the preparation method is as follows:
[0058] (1) Add cationic styrene-acrylic emulsion in paper pulp, the addition is 7.5% of the absolute dry pulp quality, stir; Continue to add emulsified paraffin in the slurry after 15min, the addition is 3% of the absolute dry pulp quality, stir evenly, Obtain prefabricated slurry;
[0059] (2) The prefabricated slurry obtained in step (1) is scooped out, hot-pressed, and punched to obtain the speaker cone.
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Abstract
The invention provides a loudspeaker cone and a preparation method and application thereof. The loudspeaker cone is prepared from the following raw materials: paper pulp, cationic styrene-acrylic emulsion and emulsified paraffin, the cationic styrene-acrylic emulsion and the emulsified paraffin cooperate with each other, so that the loudspeaker cone is endowed with excellent waterproof and moisture-proof performance, the waterproof performance can reach IPX7 level, the water absorption rate is lower than 4.72%, and the loudspeaker cone can fully meet the application of a loudspeaker underwaterand in a humid outdoor environment. The loudspeaker paper cone provided by the invention can be prepared by mixing and dispersing paper pulp, cationic styrene-acrylic emulsion and emulsified paraffin, and then fishing out the pulp, performing hot press molding and punching, or can be prepared by mixing and dispersing the paper pulp and the cationic styrene-acrylic emulsion, fishing out the pulp,performing hot press molding and punching, further coating the emulsified paraffin on the surface and drying. The preparation process is simple and controllable, the loudspeaker cone with uniform quality and stability can be obtained, and the preparation method has a wide application prospect.
Description
technical field [0001] The invention belongs to the technical field of loudspeakers, and in particular relates to a loudspeaker paper cone, a preparation method and application thereof. Background technique [0002] The sound cone is an important part of the sound unit in the speaker, and its main function is to provide accurate frequency response. Sound cones can be divided into paper cones, metal cones, ceramic cones, PP cones and composite material cones according to their materials. Among them, paper cones have the characteristics of natural sound, low cost, and good processability, and have a very wide range of applications. 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 mechanical properties of the paper cone will be greatly reduced, and on the other hand, it will The paper ...
Claims
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