CN114495883A - 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱 - Google Patents

吸音材料块及其制备方法和应用该吸音材料块的扬声器箱 Download PDF

Info

Publication number
CN114495883A
CN114495883A CN202210086719.6A CN202210086719A CN114495883A CN 114495883 A CN114495883 A CN 114495883A CN 202210086719 A CN202210086719 A CN 202210086719A CN 114495883 A CN114495883 A CN 114495883A
Authority
CN
China
Prior art keywords
sound
absorbing
absorbing material
organic
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210086719.6A
Other languages
English (en)
Inventor
汪中洋
王和志
张捷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Microtech Changzhou Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to CN202210086719.6A priority Critical patent/CN114495883A/zh
Priority to US17/741,493 priority patent/US11950048B2/en
Publication of CN114495883A publication Critical patent/CN114495883A/zh
Priority to JP2022210284A priority patent/JP7470178B2/ja
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/165—Particles in a matrix
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/365—Coating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/40—Impregnation
    • C08J9/42—Impregnation with macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/43—Thickening agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/08—Copolymers of styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/02—Polyamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/08—Cellulose derivatives
    • C08J2401/26—Cellulose ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/02—Homopolymers or copolymers of hydrocarbons
    • C08J2425/04—Homopolymers or copolymers of styrene
    • C08J2425/08—Copolymers of styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/029—Manufacturing aspects of enclosures transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明提供了一种吸音材料块，所述吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，所述多孔吸音颗粒通过所述粘结剂粘附至所述有机支架材料，所述多孔吸音颗粒的粒径为10‑100μm。本发明还提供了一种吸音材料块的制备方法和应用该吸音材料块的扬声器箱。本发明提供的吸音材料块及其制备方法和应用该吸音材料块的扬声器箱不仅充分发挥了小粒径吸音颗粒具有高性能的特点，满足扬声器箱小型化的发展趋势；通过将多孔吸音颗粒与有机支架材料结合，提高了吸音材料块在扬声器箱的后腔中的稳定性，有效避免了因颗粒震动带来的声学性能的降低。

Description

吸音材料块及其制备方法和应用该吸音材料块的扬声器箱
【技术领域】
本发明涉及吸音材料技术领域，特别涉及一种吸音材料块及其制备方向和应用该吸音材料块的扬声器箱。
【背景技术】
随着手机等智能移动终端的不断发展，轻薄化已成为一个趋势，因此，音频扬声器后腔所占空间进一步缩小。通常情况下，扬声器后腔减小，会显著降低低频段的响应，致使音质变差。为了解决这一矛盾，通常在后腔中填充可以吸附声音的吸音材料，虚拟增大后腔体积，达到提高声音质量的目的。
相关技术中，常用的有两种形态的吸音材料，第一种为颗粒状吸音材料，其存在颗粒粒径越小、吸音性能越高的特点；然而，颗粒状吸音材料在灌装时难以填满后腔，在扬声器箱工作时，后腔气体震动使得颗粒震动，颗粒粒径越小，震动越显著，听感越差，甚至会出现穿过网布扩散到扬声器单体内部，损坏扬声器单体的风险。第二种是块状吸音材料，比如以泡棉为骨架的吸音材料，其仍然存在吸音粉末团聚、透气性差、声阻高、吸音性能低的缺点。
因此，实有必要提供一种新的吸音材料块及其制备方法和应用该吸音材料块的扬声器箱以解决上述技术问题。
【发明内容】
本发明的目的在于克服上述技术问题，提供一种吸音材料块及其制备方法和应用该吸音材料块的扬声器箱，该吸音材料块充分发挥了小粒径吸音颗粒具有高吸音性能的特点，有效提高吸音材料块在后腔中的稳定性，避免颗粒震动带来的声学性能的变化，有效防止吸音材料块进入扬声器单体而损害扬声器箱的声学性能。
为实现上述目的，本发明提供一种吸音材料块，所述吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，所述多孔吸音颗粒通过所述粘结剂粘附至所述有机支架材料，所述多孔吸音颗粒的粒径为10-100μm。
优选的，所述多孔吸音颗粒由粒径小于10μm的多孔粒子组成，所述多孔粒子包括沸石和活性炭。
优选的，所述沸石具有MFI、MEL和FER中的至少一种结构。
优选的，所述有机支架材料具有二维结构，所述有机支架材料包括PE、PP、PVC及PET薄膜中的一种，所述有机支架材料的厚度为10-100μm。
优选的，所述有机支架材料具有三维结构，所述有机支架材料包括三聚氰胺泡沫、聚氨酯泡沫、聚乙烯泡沫中的一种。
优选的，所述有机支架材料的密度为1-10mg/cm3，所述有机支架材料包括若干通孔，所述有机支架材料的孔隙率大于50％，所述通孔的平均孔径为50-300μm。
优选的，所述粘结剂包括聚丙烯酸酯、聚苯乙烯丙烯酸酯、聚苯乙烯醋酸酯、聚乙基乙烯醋酸酯盐中的至少一种，所述吸音材料块包括2-10wt％的所述粘结剂。
优选的，所述增稠剂包括海藻酸钠、羟甲基纤维素钠和聚乙烯醇中的至少一种，所述吸音材料块包括0.5-2wt％的所述增稠剂。
本发明还提供了一种上述吸音材料块的制备方法，其包括如下步骤：
将所述多孔粒子进行烧结或者粘接后，采用挤出滚圆造粒工艺或喷雾造粒工艺，制备粒径为10-100μm的所述多孔吸音颗粒；
将所述多孔吸音颗粒与所述粘结剂、所述增稠剂混合形成浆料；
将所述有机支架材料浸没于所述浆料中并放置5-20分钟后进行干燥，获得所述吸音材料块。
本发明还提供了一种扬声器箱，其包括具有收容空间的壳体、收容于所述收容空间内的扬声器单体，所述扬声器单体与所述壳体围设形成后腔，所述后腔内填充有上述的吸音材料块。
与相关技术相比，本发明提供的吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，其中，多孔吸音颗粒通过粘结剂粘附至有机支架材料，多孔吸音颗粒的粒径为10-100μm，不仅充分发挥了小粒径吸音颗粒具有高性能的特点，满足扬声器箱小型化的发展趋势；通过将其与有机支架材料结合，提高了吸音材料块在扬声器箱的后腔中的稳定性，有效避免了因颗粒震动带来的声学性能的降低，还防止了吸音材料块进入扬声器单体；且本发明提供的吸音材料块可适用于不同形状的后腔，省去了将颗粒状吸音材料灌装到扬声器箱的后腔的步骤，简化了扬声器箱的组装工艺。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明提供的吸音材料块制备方法的流程框图；
图2为本发明提供的扬声器箱结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明涉及一种吸音材料块，吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，多孔吸音颗粒通过粘结剂粘附至有机支架材料，多孔吸音颗粒的粒径为10-100μm。
上述的多孔吸音颗粒由若干粒径小于10μm的多孔粒子组成，多孔粒子包括沸石和活性炭；具体的，沸石包括MFI、MEL和FER中的至少一种结构。值得一提的是，不同的沸石结构只是其中的孔结构略有不同，纯相的沸石和混相的沸石均具有良好的吸音效果，沸石的具体结构并不影响本发明的技术效果。
有机支架材料具有二维结构，据此，有机支架材料可以选自PE、PP、PVC、PET薄膜中的一种，为了使得有机支架材料能较好的起到支撑骨架的作用，选用的有机支架材料的厚度在10-100μm之间。当然，值得一提的是，为了使得有机支架材料可以更好更均匀的承载多孔吸音颗粒，也可选用具有三维结构的有机支架材料，具体的，可选自三聚氰胺泡沫，聚氨酯泡沫，聚乙烯泡沫中的一种，与前述的二维结构相比，具有三维结构的有机支架材料不仅能在表面粘结住多孔吸音颗粒，其内部具有的孔结构也能对多孔吸音颗粒进行吸附，进一步提升吸音材料块的吸音能力。本发明中选用的有机支架材料的密度为1-10mg/cm3，可以理解的是，有机支架材料包括若干通孔，且该有机支架材料的孔隙率大于50％；为了让有机支架材料更好的粘结多孔吸音颗粒，将有机支架材料中通孔的平均孔径设置为50-300μm。
粘结剂包括聚丙烯酸酯、聚苯乙烯丙烯酸酯、聚苯乙烯醋酸酯、聚乙基乙烯醋酸酯盐中的至少一种，为了使得多孔吸音颗粒可以牢固的吸附在有机支架材料上，避免因颗粒震动脱落而影响扬声器箱的声学性能，以质量份计，该吸音材料块包括2-10wt％的粘结剂。
增稠剂包括海藻酸钠、羟甲基纤维素钠和聚乙烯醇中的至少一种，具体的，吸音材料块包括0.5-2wt％的增稠剂。
本发明还提供了上述吸音材料块的制备方法，具体流程结合图1进行说明。
步骤1：将多孔粒子进行烧结或者粘接后，采用挤出滚圆造粒工艺或喷雾造粒工艺，制备粒径为10-100μm的多孔吸音颗粒；
步骤2：将多孔吸音颗粒与粘结剂、增稠剂混合形成浆料；
步骤3：将有机支架材料浸没于上述浆料中，放置5-20分钟后将有机支架材料和浆料进行干燥，获得吸音材料块。
在步骤3中，烘干步骤在烘箱中进行，烘干的温度设置在100摄氏度左右。
下面将结合具体实施例解释本发明的实施方式。
实施例1
本实施例提供了一种吸音材料块的制备方法，其包括以下步骤：
按照质量比计，称取50份沸石，45份水，5份聚苯乙烯丙烯酸酯混合均匀，通过挤出滚圆造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸音颗粒。
称取1份苯乙烯丙烯酸酯，0.2份羟甲基纤维素钠，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取50份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将厚度25μm的PET薄膜浸没于上述浆料中，放置5分钟取出，置于110摄氏度的烘箱中进行干燥，得到吸音材料块。
实施例2
本实施例提供了一种吸音材料块的制备方法，其包括以下步骤：
按照质量比计，称取50份沸石，45份水，5份聚苯乙烯丙烯酸酯混合均匀，通过挤出滚圆造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸音颗粒。
称取1份苯乙烯丙烯酸酯，0.2份羟甲基纤维素钠，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取40份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在100-200μm之间、密度为5mg/cm3的三聚氰胺泡沫浸没于上述浆料中，放置5分钟取出，置于110摄氏度的烘箱中进行干燥，得到吸音材料块。
实施例3
本实施例提供了一种吸音材料块的制备方法，其包括以下步骤：
按照质量比计，称取50份沸石，40份水，5份聚丙烯酸酯与5份双氧水混合均匀，通过喷雾造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸音颗粒。
称取3份聚丙烯酸酯，0.1份聚乙烯醇，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取40份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在100-200μm，密度为5mg/cm3的三聚氰胺泡沫浸没于上述浆料中，放置10分钟取出，置于温度高于100摄氏度的烘箱中进行干燥，得到吸音材料块。
实施例4
本实施例提供了一种吸音材料块的制备方法，其包括以下步骤：
按照质量比计，称取50份沸石，40份水，5份丁苯乳液与5份双氧水混合均匀，通过挤出滚圆造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸音颗粒。
称取2份丁苯乳液，0.2份羟甲基纤维素钠，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取20份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在200-300μm，密度为3mg/cm3的聚氨酯泡沫浸没于上述浆料中，放置5分钟取出，置于温度为110摄氏度的烘箱中进行干燥，得到吸音材料块。
实施例5
本实施例提供了一种吸音材料块的制备方法，其包括以下步骤：
按照质量比计，称取50份活性碳，40份水，5份聚丙烯酸酯与5份双氧水混合均匀，通过喷雾造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸音颗粒。
称取1份聚丙烯酸酯，0.1聚乙烯醇，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取40份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在100-200μm，密度为7mg/cm3的三聚氰胺泡沫浸没于上述浆料中，放置5分钟取出，置于温度为110摄氏度的烘箱中进行干燥，得到吸音材料块。
此外，为了对本发明的技术方案的效果进行验证，还提供了两个对比例如下。
对比例1
按照质量比计，称取50份沸石，45份水，5份聚苯乙烯丙烯酸酯混合均匀，通过挤出滚圆造粒工艺制备多孔吸音颗粒，具体为造粒后利用60-150目筛网筛分出粒径约为100-250μm的多孔吸音颗粒。
称取2份苯乙烯丙烯酸酯，0.2份羟甲基纤维素钠，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取40份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在100-200μm，密度为5mg/cm3的三聚氰胺泡沫浸没于上述浆料中，放置5分钟取出，置于温度为110摄氏度的烘箱中进行干燥，得到吸音材料块。
对比例2
按照质量比计，称取50份沸石，45份水，5份聚苯乙烯丙烯酸酯混合均匀，通过喷雾造粒工艺制备多孔吸音颗粒，具体为造粒后利用150-300目筛网筛分出粒径约为50-100μm的多孔吸声颗粒。
称取4份苯乙烯丙烯酸酯，0.2份聚乙烯醇，50份去离子水，5份98wt％乙醇，混合后搅拌均匀得到混合液；称取40份上述制备的多孔吸音颗粒，加入混合液中，继续搅拌30分钟，将多孔吸音颗粒均匀分散在混合液中形成浆料。
将平均孔径在50-100μm，密度为10mg/cm3的三聚氰胺泡沫浸没于上述浆料中，放置5分钟取出，置于温度为110摄氏度的烘箱中进行干燥，得到吸音材料块。
对本发明中实施例1-5与对比例1-2中制备的吸声材料块，以及本领域现有常规吸声颗粒样品进行了声学性能测试，其中，实施例1样品通过多层薄膜堆叠测试。测试工装测试条件为体积装填量的50％，0.5ml后腔体积，所得测试结果如表1所示：
表1声学性能测试结果
样品 谐振频率降低ΔF0(Hz)
实施例1 119
实施例2 126
实施例3 132
实施例4 114
实施例5 109
对比例1 32
对比例2 46
常规吸音颗粒 106
从表1中可以看出，在声学填充体积相同的情况下，本发明实施例1-5制备的吸音材料块具有显著优于本领域常规吸音颗粒的声学性能，使得填充有该吸音材料块的扬声器箱具有更好的低频性能。此外，在扬声器箱的工作状态下，本发明所提供吸音材料块不会出现由于颗粒碰撞移动而产生声学性能的变化，且作为载体的有机支架材料可以根据后腔形状进行调整，从而最大限度地填充后腔，使扬声器箱的低频效果更好。进一步的，在扬声器箱组装过程中，吸音材料块能够很轻易放入后腔，省去了灌装颗粒等步骤，提高了扬声器箱的制备效率。
对比例1-2性能显著低于实施例2-5与常规样品，这是由于多孔吸音颗粒的直径与具有三维结构的泡沫孔径尺寸不匹配。在制备过程中，多孔吸音颗粒未能完全进入泡沫内部，而是仅在泡沫表面形成一层吸音颗粒层。
实施例1中形成的二维吸音颗粒层表面积比实施例1-2大，性能较好。
本发明还提供了一种扬声器箱100，如图2所示，其包括具有收容空间的壳体1以及收容于收容空间内的扬声器单体2；扬声器单体2和壳体1围设形成后腔3，后腔3中填充上述吸音材料块，以增加后腔空气的声顺性，从而提高扬声器的低频声学性能。
与相关技术相比，本发明提供的吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，其中，多孔吸音颗粒通过粘结剂粘附至有机支架材料，多孔吸音颗粒的粒径为10-100μm，不仅充分发挥了小粒径吸音颗粒具有高性能的特点，满足扬声器箱小型化的发展趋势；通过将其与有机支架材料结合，提高了吸音材料块在扬声器箱的后腔中的稳定性，有效避免了因颗粒震动带来的声学性能的降低，还防止了吸音材料块进入扬声器单体；且本发明提供的吸音材料块可适用于不同形状的后腔，省去了将颗粒状吸音材料灌装到扬声器箱的后腔的步骤，简化了扬声器箱的组装工艺。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

1.一种吸音材料块，其特征在于，所述吸音材料块包括多孔吸音颗粒、有机支架材料、粘结剂以及增稠剂，所述多孔吸音颗粒通过所述粘结剂粘附至所述有机支架材料，所述多孔吸音颗粒的粒径为10-100μm。
2.根据权利要求1所述的吸音材料块，其特征在于，所述多孔吸音颗粒由粒径小于10μm的多孔粒子组成，所述多孔粒子包括沸石和活性炭。
3.根据权利要求2所述的吸音材料块，其特征在于，所述沸石具有MFI、MEL和FER中的至少一种结构。
4.根据权利要求1所述的吸音材料块，其特征在于，所述有机支架材料具有二维结构，所述有机支架材料包括PE、PP、PVC及PET薄膜中的一种，所述有机支架材料的厚度为10-100μm。
5.根据权利要求1所述的吸音材料块，其特征在于，所述有机支架材料具有三维结构，所述有机支架材料包括三聚氰胺泡沫、聚氨酯泡沫、聚乙烯泡沫中的一种。
6.根据权利要求5所述的吸音材料块，其特征在于，所述有机支架材料的密度为1-10mg/cm3，所述有机支架材料包括若干通孔，所述有机支架材料的孔隙率大于50％，所述通孔的平均孔径为50-300μm。
7.根据权利要求1所述的吸音材料块，其特征在于，所述粘结剂包括聚丙烯酸酯、聚苯乙烯丙烯酸酯、聚苯乙烯醋酸酯、聚乙基乙烯醋酸酯盐中的至少一种，所述吸音材料块包括2-10wt％的所述粘结剂。
8.根据权利要求1所述的吸音材料块，其特征在于，所述增稠剂包括海藻酸钠、羟甲基纤维素钠和聚乙烯醇中的至少一种，所述吸音材料块包括0.5-2wt％的所述增稠剂。
9.一种如权利要求1所述吸音材料块的制备方法，其特征在于，包括如下步骤：
将所述多孔粒子进行烧结或者粘接后，采用挤出滚圆造粒工艺或喷雾造粒工艺，制备粒径为10-100μm的所述多孔吸音颗粒；
将所述多孔吸音颗粒与所述粘结剂、所述增稠剂混合形成浆料；
将所述有机支架材料浸没于所述浆料中并放置5-20分钟后进行干燥，获得所述吸音材料块。
10.一种扬声器箱，其包括具有收容空间的壳体、收容于所述收容空间内的扬声器单体，所述扬声器单体与所述壳体围设形成后腔，其特征在于，所述后腔内填充有如权利要求1所述的吸音材料块。
CN202210086719.6A 2022-01-25 2022-01-25 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱 Pending CN114495883A (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202210086719.6A CN114495883A (zh) 2022-01-25 2022-01-25 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱
US17/741,493 US11950048B2 (en) 2022-01-25 2022-05-11 Sound absorption material, method of making the same and speaker box filled with the same
JP2022210284A JP7470178B2 (ja) 2022-01-25 2022-12-27 吸音材料ブロック及びその製造方法とこの吸音材料ブロックを用いたスピーカボックス

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210086719.6A CN114495883A (zh) 2022-01-25 2022-01-25 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱

Publications (1)

Publication Number Publication Date
CN114495883A true CN114495883A (zh) 2022-05-13

Family

ID=81473793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210086719.6A Pending CN114495883A (zh) 2022-01-25 2022-01-25 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱

Country Status (3)

Country Link
US (1) US11950048B2 (zh)
JP (1) JP7470178B2 (zh)
CN (1) CN114495883A (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115093159A (zh) * 2022-07-04 2022-09-23 瑞声科技（南京）有限公司 吸音材料块及其制备方法与相关设备
CN115504810A (zh) * 2022-09-05 2022-12-23 瑞声声学科技(深圳)有限公司 一种吸音材料块及其制备方法与应用
WO2024036710A1 (zh) * 2022-08-19 2024-02-22 瑞声光电科技(常州)有限公司 一种分子筛吸音材料及其制备方法和扬声器
WO2024045233A1 (zh) * 2022-09-02 2024-03-07 瑞声科技（南京）有限公司 一种多孔复合吸声材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010018961A (ja) 2008-07-08 2010-01-28 Masaaki Mizuta 吸音及び遮音複合材料
US8794373B1 (en) * 2013-03-15 2014-08-05 Bose Corporation Three-dimensional air-adsorbing structure
CN108481861B (zh) 2018-07-02 2020-05-22 兴仁县详务新型节能建材有限公司 一种高分子吸音复合板及其制造方法
US10783867B2 (en) * 2018-11-08 2020-09-22 Apple Inc. Acoustic filler including acoustically active beads and expandable filler
WO2021014535A1 (ja) 2019-07-22 2021-01-28 昭和電工マテリアルズ株式会社 吸音材、吸音性向上塗液、及び吸音性向上シート
US11109150B2 (en) * 2019-11-12 2021-08-31 Apple Inc. Coating for improving loudspeaker sound quality

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115093159A (zh) * 2022-07-04 2022-09-23 瑞声科技（南京）有限公司 吸音材料块及其制备方法与相关设备
WO2024036710A1 (zh) * 2022-08-19 2024-02-22 瑞声光电科技(常州)有限公司 一种分子筛吸音材料及其制备方法和扬声器
WO2024045233A1 (zh) * 2022-09-02 2024-03-07 瑞声科技（南京）有限公司 一种多孔复合吸声材料及其制备方法
CN115504810A (zh) * 2022-09-05 2022-12-23 瑞声声学科技(深圳)有限公司 一种吸音材料块及其制备方法与应用
WO2024050899A1 (zh) * 2022-09-05 2024-03-14 瑞声声学科技(深圳)有限公司 吸音材料块及其制备方法与应用

Also Published As

Publication number Publication date
US20230239612A1 (en) 2023-07-27
US11950048B2 (en) 2024-04-02
JP2023108600A (ja) 2023-08-04
JP7470178B2 (ja) 2024-04-17

Similar Documents

Publication Publication Date Title
CN114495883A (zh) 吸音材料块及其制备方法和应用该吸音材料块的扬声器箱
CN210579179U (zh) 音频扬声器、填料和可膨胀材料
CN111163395B (zh) 吸音颗粒、发声装置以及电子设备
CN110418263B (zh) 具有刚性吸附插入体的音频扬声器
WO2021135878A1 (zh) 一种活性炭吸音材料、发声装置以及电子设备
WO2020108584A1 (zh) 一种活性炭吸音材料和发声装置
WO2021135871A1 (zh) 吸音材料制备方法、吸音材料、发声装置以及电子设备
CN111182419B (zh) 吸音颗粒、发声装置以及电子设备
CN111147987B (zh) 吸音颗粒、发声装置以及电子设备
WO2020108255A1 (zh) 一种活性炭吸音材料和发声装置
JP2011199574A (ja) 音響スピーカー装置
US11665469B2 (en) Cavities and active regions
CN111163403A (zh) 吸音颗粒、发声装置以及电子设备
CN216391309U (zh) 吸音颗粒和应用该吸音颗粒的扬声器
CN116102030A (zh) 一种用于吸声的分子筛材料及其制备方法
CN113347539B (zh) 一种吸音材料及扬声器
US20240080615A1 (en) Sound-absorbing material block, method for preparing the same and its application
CN220798534U (zh) 声学增强结构、扬声器和电子设备
CN115460531B (zh) 沸石颗粒、发声装置和电子设备
US20230022009A1 (en) Microspeaker Enclosure Including Block Formed of Porous Particles
CN114727210A (zh) 一种吸音组件和扬声器
CN114885269A (zh) 一种可膨胀声学增强件及其制作方法与应用
CN115504810A (zh) 一种吸音材料块及其制备方法与应用
JP2023109156A (ja) ガス吸着材料及びその製造方法並びに該ガス吸着材料を適用したスピーカボックス
CN117316134A (zh) 吸音材料及其制备方法、装置、设备、炭基粘结剂及应用

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination