Suab-nqus cov ntaub ntawv, raws li cov txheej txheem tseem ceeb ntawm acoustic engineering thiab sab hauv ib puag ncig optimization, muaj cov yam ntxwv ntawm kev txiav txim siab lawv cov kev ua tau zoo hauv kev tswj lub suab nrov thoob plaws ntau zaus bands, spatial sound field shaping, thiab ib puag ncig adaptability. Kev nkag siab tob txog cov yam ntxwv no yog qhov tseem ceeb rau kev ua tiav qhov sib txuam ntawm kev xaiv cov khoom siv thiab cov hom phiaj acoustic hauv kev xyaum ua haujlwm engineering.
Los ntawm qhov kev xav ntawm cov tshuab nqus suab, cov txiaj ntsig zoo ntawm lub suab- absorbing cov ntaub ntawv feem ntau yog tshwm sim hauv lawv txoj kev hloov pauv lub zog sib txawv. Lub suab ntxeem tau-cov ntaub ntawv nqus, uas sawv cev los ntawm polyester fiberboard, iav ntaub plaub, pob zeb ntaub plaub, thiab xav tau, muab cov kev nkag txaus txaus rau lub suab nthwv dej los ntawm lawv qhov peb sab hauv- qhov sib txawv ntawm cov qauv microporous. Thaum lub suab tsis muaj teeb meem, cov huab cua nyob rau hauv lub pores vibrate thiab tsim viscous kev sib txhuam nrog lub pore phab ntsa, nrog los ntawm tshav kub conduction losses, zoo converting suab zog rau hauv tshav kub zog. Cov txheej txheem no tseem ceeb tshwj xeeb hauv qhov nruab nrab thiab siab -ntau zaus (ntau tshaj 500Hz), ua rau muaj txiaj ntsig zoo rau kev thim rov qab thiab rov qab suab. Resonant suab-absorbing cov ntaub ntawv ua tiav lub hom phiaj lub suab nqus los ntawm cov qauv tsim tshwj xeeb, xws li Helmholtz resonators muaj li ntawm perforated panels thiab kab noj hniav. Thaum lub suab nthwv dej ntau zaus los ze rau lub cev lub cev resonant zaus, huab cua hauv cov kab noj hniav vibrates hnyav thiab dissipates lub zog los ntawm kev sib txhuam nrog lub pore caj dab phab ntsa, zoo daws teeb meem tsawg- zaus sawv nthwv dej; nyias- phaj resonators siv cov inertial coupling ntawm lub phaj thiab cov huab cua txheej tom qab nws los ntxiv txhim kho qis{13}} zaus nqus. Impedance mismatch cov ntaub ntawv hloov lub suab nthwv dej reflection txoj kev los ntawm qhov tsis zoo ntawm cov duab los yog cov khoom siv tsis tu ncua, ua rau lub sijhawm tshem tawm ntawm cov nthwv dej uas muaj kev cuam tshuam los yog ntau qhov kev cuam tshuam ntawm qee lub zog rau hauv lub suab- nqus cov qauv. Cov no feem ntau ua ke nrog ntxeem tau thiab resonant mechanisms kom nthuav cov suab nrov nqus bandwidth.
Nyob rau hauv cov nqe lus ntawm cov khoom muaj pes tsawg leeg thiab kev tswj kev ua tau zoo, suab -absorbing cov ntaub ntawv qhia ib tug high℃ntawm kev yooj yim tsim. Inorganic fiber cov ntaub ntawv (xws li pob zeb wool thiab ntxhia wool) yog cov yam ntxwv ntawm kub tsis kam thiab zoo heev hluav taws kub, nrog melting cov ntsiab lus feem ntau siab tshaj 1000℃thiab hluav taws kub mus txog A- qib tsis yog -combustible, ua rau lawv haum rau hnyav ib puag ncig xws li cov nroj tsuag muaj thiab siab - kub rhiav; organic polymer cov ntaub ntawv (xws li polyurethane ua npuas ncauj thiab polyester fiberboard) ua tiav qhov sib npaug ntawm lub teeb yuag (qhov ntom ntom qis li 20 kg / m³), ua haujlwm yooj yim (yuav ua tau kub- nias, tuag- txiav, thiab nto- tsim), thiab ib puag ncig tus phooj ywg (tsawg VOC emissions) los ntawm cov qauv saw molecular thiab kev ua haujlwm ntawm kev ua haujlwm, kev sib tham thiab kev ua haujlwm hauv lub rooj sib tham. xinesmas; cov khoom siv fiber ntau (xws li ntaub plaub thiab cork) muaj biodegradability thiab eco{10}}kev phooj ywg raws li lawv cov txiaj ntsig tseem ceeb. Lub ntuj scale qauv ntawm cov ntaub plaub fibers kuj muab cov khoom tshwj xeeb suab damping yam ntxwv, thaum lub ntxeem tau elasticity ntawm cork combines suab absorption thiab thermal rwb thaiv tsev zog; Cov ntaub ntawv sib xyaw ua kom muaj kev sib npaug ntawm kev txhim kho ntawm broadband (125Hz-4000Hz) suab nqus coefficients los ntawm ntau-mechanism superposition (xws li porous txheej + resonant kab noj hniav) thiab ntau cov khoom sib xyaw (xws li fiber ntau + perforated hlau daim hlau), hais txog cov kev txwv ntawm ib zaug.
Environmental adaptability thiab durability kuj tseem yog cov kev qhia tseem ceeb rau lub suab -absorbing cov ntaub ntawv. Inorganic fibers yog noo noo-tiv taus thiab tiv thaiv- kev laus, tswj kev ua haujlwm ruaj khov hauv ib puag ncig nrog cov av noo qis dua 80%; organic polymers, tom qab nplaim taws- retardant hloov kho (xws li ntxiv phosphorus-raws li thiab nitrogen-raws li nplaim taws retardants), tuaj yeem ua tau raws li UL94 V-0 lossis GB 8624 B1 cov qauv kev nyab xeeb hluav taws, thiab kev kho zaj duab xis saum npoo tuaj yeem txhim kho cov dej noo thiab stain tsis kam; ntuj fibers yuav tsum tau mildew thiab kab - pov thawj kev kho mob (xws li ntxiv natural antibacterial agents) kom hloov mus rau high-humidity ib puag ncig; Cov ntaub ntawv sib xyaw tiv thaiv kev delamination thiab txuas ntxiv lub neej kev pabcuam los ntawm kev sib khi thiab kev sib txuas ntxiv.
Kev tsim kho kom haum tau nthuav dav ntxiv rau kev siv cov xwm txheej ntawm lub suab- nqus cov ntaub ntawv. Cov qauv tsim qauv (xws li tus qauv- lub suab loj- nqus cov cib thiab cov vaj huam sib luag) txhawb kev sib dhos sai thiab hloov chaw tom qab. Muaj ntau txoj kev teeb tsa, suav nrog qhuav- dai, nplaum nplaum, thiab kho qhov chaw, yog sib xws nrog ntau yam substrates (pob zeb, gypsum board, hlau thav duab). Cov ntaub ntawv yooj yim (xws li kev xav thiab ua npuas ncauj mos) tuaj yeem ua raws li cov phab ntsa nkhaus lossis lub qab nthab tsis zoo, tiv thaiv kev tsim cov duab ntxoov ntxoo.
Tam sim no, suab- nqus cov khoom siv thev naus laus zis tab tom txhim kho rau kev txawj ntse thiab kev ruaj ntseg: theem- hloov lub zog cia cov ntaub ntawv ua ke nrog lub suab- nqus cov qauv tuaj yeem hloov kho lub suab nqus tau zoo; kev rov ua dua tshiab ntawm cov khoom siv fiber ntau thiab cov khoom siv pov tseg (xws li slag thiab ya tshauv) txo cov peev txheej siv thiab cov pa roj carbon emissions; thiab kev siv dav dav ntawm qis -VOC thiab formaldehyde- cov txheej txheem pub dawb txhawb kev tiv thaiv kev noj qab haus huv hauv tsev. Kev sib sib zog nqus ntawm cov cuab yeej thev naus laus zis no ua rau lub suab- nqus cov ntaub ntawv tsis yog tsuas yog daws cov teeb meem suab nrov xwb tab sis kuj dhau los ua cov khoom tseem ceeb ntawm cov tsev ntsuab thiab cov tshuab ntse ntse, tsim kom muaj qhov chaw nyob ntsiag to, xis nyob, thiab ruaj khov rau ntau qhov chaw.
