A kind of in-situ synthesis preparation method of virtual acoustic material

Abstract

The invention discloses an in-situ synthesis preparation method of a virtual acoustical material. The in-situ synthesis preparation method takes organic silica gel as a silicon oxide source and an active adhesive, aluminum oxide or aluminum hydroxide, gas-phase silicon dioxide and the like as a structure modifier and nano-micron grade carbon black as a pore-forming agent; the components are dissolved or dispersed uniformly through a solvent, so that microspheres with the grain diameter in a range of 50 microns to 2 millimeters are prepared in a water-phase system containing a surfactant through a suspension polymerization method. The prepared microspheres are calcined at high temperature under an oxygen environment to remove the pore-forming agent and carbon and hydrogen components, so that a white porous composite inorganic microsphere material is obtained; the white porous composite inorganic microsphere material is sorted through a screen mesh to obtain products with a plurality ofgrades in a range of 50 microns to 1000 microns. According to the method disclosed by the invention, a resonant mode of a rear cavity of a loudspeaker is changed and a virtual resonant space is increased so that the actual volume of the loudspeaker is greatly reduced and the acoustical effect of the loudspeaker is not influenced, and furthermore, the requirements on smaller and thinner acousticalcomponents and better effect of people are met.

Description

technical field [0001] The invention relates to the field of loudspeakers, in particular to an in-situ synthesis preparation method of a virtual acoustic material. Background technique [0002] The current common structure of the electroacoustic conversion device is composed of a loudspeaker and a housing resonant space (such as a sound box). However, with the emergence of ultra-thin mobile phones, ultra-thin TV sets, and even flexible electronic products in recent years, the original electroacoustic conversion device structure has obviously been difficult to meet people's requirements for smaller and thinner acoustic components with better effects; Gas adsorption materials, such as activated carbon or zeolite, can be placed in the resonance space of the shell of the electroacoustic conversion device to improve the sound quality of the sound generating device. The reason is that the porous gas adsorption material is placed in the resonance space of the speaker, which can ca...

AI Technical Summary

Problems solved by technology

[0006] From the above-mentioned relevant patents and literature reports, it can be seen that the research on the application of inorganic porous microsphere materials for acoustic regulation is still in its infancy, and testing the ⊿F0 value of this type of material is an important means to characterize the acoustic effect of materials. However, the research on the specific action mechanism and anti-aging mechanism of virtual education materials changing the sound quality of speakers in the world is still not very clear.