Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Diaphragm coating, loudspeaker diaphragm and preparation method thereof, and electrostatic loudspeaker

A loudspeaker and coating technology, applied in electrostatic transducer loudspeakers, non-planar diaphragms/paper cones, sensors, etc., can solve the problems of affecting the service life of diaphragms, difficult to meet performance requirements, and poor low-frequency performance. High processing precision, improved electron migration speed, improved resolving power and sound pressure release effect

Pending Publication Date: 2019-11-08
宗阳阳
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the domestic electrostatic speaker diaphragms are processed by magnetron sputtering technology, which is relatively expensive; some of them are produced by coating graphite powder or metal powder on the blank diaphragm, which has low processing accuracy. , Disadvantages such as high sound distortion rate, short lifespan, and poor low-frequency performance; there are methods to directly compound graphene or metal powder with polymer materials to prepare diaphragms. This process is too complicated and it is difficult to meet performance requirements; In addition, there is also a method to directly coat graphene on the diaphragm. In this method, graphene is easy to fall off during use, which affects the service life of the diaphragm.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diaphragm coating, loudspeaker diaphragm and preparation method thereof, and electrostatic loudspeaker
  • Diaphragm coating, loudspeaker diaphragm and preparation method thereof, and electrostatic loudspeaker
  • Diaphragm coating, loudspeaker diaphragm and preparation method thereof, and electrostatic loudspeaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 2 to Figure 4 As shown, the diaphragm coating is made of the following components by weight:

[0039] 1 part of graphene slurry, 1 part of nano-carbon slurry, 1 part of metal nanoparticle dispersion, 10 parts of binder, 1 part of auxiliary agent, and 50 parts of solvent.

[0040] The graphene has 3 layers; the nano-carbon in the nano-carbon slurry is carbon black, and its particle size is 20nm. The metal nanoparticles in the metal nanoparticle dispersion liquid are copper nanoparticles with a particle diameter of 50 nm. The binder is alkyd resin. The auxiliary agent is 0.5 part of wetting and dispersing agent, 0.3 part of anti-settling agent and 0.2 part of defoaming agent; wetting and dispersing agent is amine wetting agent, including amides and polyethers; anti-settling agent is titanate, Polyamide or modified polyurea; defoamer is organosiloxane, amide or long chain alcohol; solvent is deionized water.

[0041] The loudspeaker diaphragm 1 comprise...

Embodiment 2

[0044] Such as Figure 2 to Figure 4 As shown, the diaphragm coating is made of the following components by weight:

[0045] 5 parts of graphene slurry, 5 parts of nano-carbon slurry, 5 parts of metal nanoparticle dispersion, 20 parts of binder, 2 parts of auxiliary agent, and 60 parts of solvent.

[0046] The graphene is 2 layers; the nano-carbon in the nano-carbon slurry is a nano-carbon sphere, and its particle size is 30nm. The metal nanoparticles in the metal nanoparticle dispersion liquid are nano silver with a particle diameter of 50nm. The binder is alkyd resin. The auxiliary agent is 1 part of dispersing wetting agent, 0.5 part of defoamer and 0.5 part of anti-settling agent; the wetting and dispersing agent is an amine wetting agent, including amides and polyethers; the anti-settling agent is titanate, Polyamide or modified polyurea; defoamer is organosiloxane, amide or long chain alcohol; solvent is ethanol.

[0047] The loudspeaker diaphragm 1 comprises two dia...

Embodiment 3

[0050] Such as Figure 2 to Figure 4 As shown, the diaphragm coating is made of the following components by weight:

[0051]15 parts of graphene slurry, 10 parts of nano-carbon slurry, 10 parts of metal nanoparticle dispersion, 25 parts of binder, 3 parts of auxiliary agent, and 60 parts of solvent.

[0052] The graphene is a single layer; the nano-carbon in the nano-carbon slurry is a carbon nanotube with a tube diameter of 20nm. The metal nanoparticles in the metal nanoparticle dispersion liquid are nano-nickel with a particle diameter of 100 nm. The binder is acrylate resin. The auxiliary agent is 1.5 parts of dispersing wetting agent, 0.5 part of defoamer and 1.0 part of anti-settling agent; the wetting and dispersing agent is an amine wetting agent, including amides and polyethers; the anti-settling agent is titanate, Polyamide or modified polyurea; defoamer is organosiloxane, amide or long chain alcohol; solvent is ethylene glycol.

[0053] The loudspeaker diaphragm ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a diaphragm coating, a loudspeaker diaphragm, a preparation method of the loudspeaker diaphragm and an electrostatic loudspeaker. The electrostatic loudspeaker comprises a loudspeaker diaphragm, two polar plates and a boosting transformer, the two polar plates are vertically arranged on the two sides of the loudspeaker diaphragm respectively, and the loudspeaker diaphragmis connected with the positive electrode of the output end of a power amplifier; and the two polar plates are connected with the negative electrode of the output end of the power amplifier through a boosting transformer. Compared with the prior art, the cost of the electrostatic loudspeaker can be reduced, the operation is simple, the performance is stable, the processing precision is high, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of electrostatic loudspeakers, in particular to a diaphragm coating, a loudspeaker diaphragm and a preparation method thereof, and an electrostatic loudspeaker. Background technique [0002] The current mainstream speakers are mainly divided into traditional dynamic speakers (mainly including moving coil speakers and moving iron speakers) and electrostatic speakers. Due to the shortcomings of the magnetic steel and the moving coil structure, the distortion rate of the electric speaker is as high as 5% to 10%. [0003] Electrostatic speakers rely on static electricity to attract or repel the sounding diaphragm to control the vibration of the diaphragm to produce sound. The diaphragm of the electrostatic speaker has almost no vibration mass, so the electrostatic speaker has better resolution than the electric speaker, and can capture extremely subtle changes in the music signal, which can bring people an imme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R19/02H04R7/12H04R31/00
CPCH04R19/02H04R7/12H04R31/003H04R2231/001
Inventor 宗阳阳
Owner 宗阳阳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com