EP1180763A3 - Ceramic sound absorbing material and manufacturing method therefor - Google Patents

Ceramic sound absorbing material and manufacturing method therefor Download PDF

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Publication number
EP1180763A3
EP1180763A3 EP01110763A EP01110763A EP1180763A3 EP 1180763 A3 EP1180763 A3 EP 1180763A3 EP 01110763 A EP01110763 A EP 01110763A EP 01110763 A EP01110763 A EP 01110763A EP 1180763 A3 EP1180763 A3 EP 1180763A3
Authority
EP
European Patent Office
Prior art keywords
sound absorbing
absorbing material
manufacturing
resin
method therefor
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.)
Withdrawn
Application number
EP01110763A
Other languages
German (de)
French (fr)
Other versions
EP1180763A2 (en
Inventor
Kazuhiro Nagasaki R & D Center Hasezaki
Hikaru Nagasaki R & D Center Motomura
Shiro Nagasaki Shipyard & Machinery Works Seki
Nagasaki Shipyard Machinery Works Shibata Seizou
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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
Priority claimed from JP2000246111A external-priority patent/JP2002060265A/en
Priority claimed from JP2000251880A external-priority patent/JP3416629B2/en
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP1180763A2 publication Critical patent/EP1180763A2/en
Publication of EP1180763A3 publication Critical patent/EP1180763A3/en
Withdrawn legal-status Critical Current

Links

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

Abstract

An object of the present invention is to reuse wastes of used or defective sound absorbing material body as a raw material for sound absorbing material body. As aggregates for the sound absorbing material of the present invention, ground mullite particles with an average particle size of about 0.5 to 1 mm are used. As a binder, polyethylene terephthalate (hereinafter referred to as PET) resin, which is a thermoplastic resin, of a form of pellet not larger than 1 mm is used. The aggregates are heated to a temperature in the range of 245°C to 290°C, which is the melting point of PET resin. In order to ensure the smoothness of surface layer when a mixture is poured into a mold, pressing with a pressure of 40 to 1000 kgf/cm2 is performed. After pressing, the product is cooled and solidified, and then is removed from the mold, whereby a sound absorbing board with a thickness of 8 mm is obtained.
EP01110763A 2000-08-15 2001-05-03 Ceramic sound absorbing material and manufacturing method therefor Withdrawn EP1180763A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000246111 2000-08-15
JP2000246111A JP2002060265A (en) 2000-08-15 2000-08-15 Sound absorbing material
JP2000251880A JP3416629B2 (en) 2000-08-23 2000-08-23 Ceramic sound-absorbing material with excellent impact resistance and its manufacturing method
JP2000251880 2000-08-23

Publications (2)

Publication Number Publication Date
EP1180763A2 EP1180763A2 (en) 2002-02-20
EP1180763A3 true EP1180763A3 (en) 2003-03-12

Family

ID=26597960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110763A Withdrawn EP1180763A3 (en) 2000-08-15 2001-05-03 Ceramic sound absorbing material and manufacturing method therefor

Country Status (2)

Country Link
EP (1) EP1180763A3 (en)
TW (1) TWI248427B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2454169A (en) * 2007-10-25 2009-05-06 Ecobond Methods of producing article using particulate waste products
JP6250412B2 (en) * 2014-01-23 2017-12-20 玉川窯業株式会社 Method for producing porous ceramic acoustic material and acoustic structure
CN108706912A (en) * 2018-03-19 2018-10-26 重庆大学 A kind of poly- sand sound absorber and preparation method thereof
CN114538825B (en) * 2022-02-28 2022-09-20 西安上禹佳盛生态环保科技有限公司 NAMF sound absorption and insulation plate adaptable to different frequency noises and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252590A (en) * 1988-03-31 1989-10-09 Ndc Co Ltd Ceramic cellular board of two layered structure and production thereof
JPH0222181A (en) * 1988-07-07 1990-01-25 Ngk Insulators Ltd Porous ceramic plate
JPH04211455A (en) * 1990-01-25 1992-08-03 Mitsubishi Electric Corp Formed article of metal powder
US5536910A (en) * 1993-08-09 1996-07-16 Northrop Grumman Sound, radio and radiation wave-absorbing, non-reflecting structure and method thereof
JPH0916180A (en) * 1995-07-03 1997-01-17 Mitsubishi Heavy Ind Ltd Ceramic sound absorbing material
US5820975A (en) * 1995-10-04 1998-10-13 Nippon Steel Chemical Co., Ltd. Sound absorbing material and method of production therefor
JP2000185303A (en) * 1998-12-22 2000-07-04 Rivall:Kk Laminated flooring or building material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252590A (en) * 1988-03-31 1989-10-09 Ndc Co Ltd Ceramic cellular board of two layered structure and production thereof
JPH0222181A (en) * 1988-07-07 1990-01-25 Ngk Insulators Ltd Porous ceramic plate
JPH04211455A (en) * 1990-01-25 1992-08-03 Mitsubishi Electric Corp Formed article of metal powder
US5536910A (en) * 1993-08-09 1996-07-16 Northrop Grumman Sound, radio and radiation wave-absorbing, non-reflecting structure and method thereof
JPH0916180A (en) * 1995-07-03 1997-01-17 Mitsubishi Heavy Ind Ltd Ceramic sound absorbing material
US5820975A (en) * 1995-10-04 1998-10-13 Nippon Steel Chemical Co., Ltd. Sound absorbing material and method of production therefor
JP2000185303A (en) * 1998-12-22 2000-07-04 Rivall:Kk Laminated flooring or building material

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 595 (C - 672) 27 December 1989 (1989-12-27) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 171 (C - 0706) 3 April 1990 (1990-04-03) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 552 (C - 1006) 20 November 1992 (1992-11-20) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10 17 November 2000 (2000-11-17) *

Also Published As

Publication number Publication date
EP1180763A2 (en) 2002-02-20
TWI248427B (en) 2006-02-01

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