Hauv kev kho kom haum rau cov chaw ua yeeb yam ntiag tug, kev ua kom lub suab nqus thiab txo suab nrov yog ib feem tseem ceeb. Ib chav kho kom zoo nkauj thiab ib chav ib txwm muaj peev xwm nthuav tawm cov teebmeem suab-pom sib txawv sab hauv thiab sab nraud. Cov tsev feem ntau siv cov pob zeb ua vaj tse, cov ntoo vaj huam sib luag lossis cov cib khov kho ua cov khoom siv phab ntsa. Hais lus nruj me ntsis, cov ntaub ntawv no tuaj yeem ua tiav cov teebmeem ntawm kev rwb thaiv suab, tab sis qhov tob ntawm cov teebmeem nyob ntawm qhov ceev ntawm cov khoom sib txawv. Rau chav suab-pom uas ua raws li cov teebmeem suab, cov khoom siv phab ntsa ib leeg tsis txaus kom ua tiav cov teebmeem ntawm kev txo suab nrov. Txawm hais tias nws yog lub tsev loj lossis lub tsev nyob, cov chaw ua yeeb yam ntiag tug xav tau kev nqus suab lossis kev rwb thaiv suab. Kev kho suab tswj kev cuam tshuam ntawm cov nthwv dej suab hauv ib chav, kho lub sijhawm reverberation hauv chav, yog li txhim kho qhov zoo ntawm kev saib yeeb yaj kiab. Cia peb tham txog cov khoom ntawd txog kev nqus suab thiab kev rwb thaiv suab hnub no.
Suab nqus
Peb tau hais luv luv saum toj no tias qee cov khoom khov kho tuaj yeem ua rau lub suab nthwv dej tsis muaj zog thaum lub sijhawm kis mus. Qhov tseeb, ntxiv rau kev nqus los ntawm cov khoom sab hauv, qee cov khoom kuj tseem tuaj yeem cuam tshuam lub suab nthwv dej thiab xa mus rau sab tod. Kev nqus suab thiab kev rwb thaiv suab yog ob txoj kev tswj suab sib txawv kiag li. Kev nqus suab txhais tau tias qhov xwm txheej ntawm kev poob zog tom qab cov suab nthwv dej ntaus rau ntawm qhov chaw ntawm cov khoom, thiab kev rwb thaiv suab txhais tau tias yog ib txoj hauv kev txo cov suab nrov hauv txoj kev kis mus rau nthwv dej suab. Hais yooj yim, kev nqus suab tshem tawm qee qhov zog suab, thiab kev rwb thaiv suab tswj kev xa cov suab nthwv dej mus rau sab tod ntawm phab ntsa.
Thaum cov suab nthwv dej hla huab cua thiab kov qhov chaw ntawm cov khoom siv nqus suab, ib feem ntawm nws yuav raug cuam tshuam thiab ib feem yuav raug nqus. Cov khoom siv acoustic siv rau kev nqus suab feem ntau muaj cov khoom porous, thiab cov feem ntau yog cov fibers, cov khoom me me, thiab cov ua npuas dej. Lub suab nthwv dej raug cuam tshuam rau ntawm ntau qhov me me hauv cov khoom siv, qhov twg nws ua rau muaj kev sib txhuam nrog cov pa molecules thiab phab ntsa qhov tsis muaj zog, yog li hloov lub zog suab mus rau hauv lub zog cua sov kom ua tiav cov nyhuv nqus suab. Ntxiv nrog rau cov khoom siv nqus suab porous, muaj cov qauv nqus suab resonant thiab cov qauv nqus suab tshwj xeeb. Kev nqus suab resonance suav nrog ib qho resonator, perforated plate resonance suab mechanism, nyias zaj duab xis resonance detail qauv thiab nyias phaj resonance suab qauv nqus. Nws lub hauv paus ntsiab lus kuj yog siv cov qauv khoom thiab huab cua los tsim ib lub kaw lus resonant kom ua tiav kev nqus suab.
Tus nqi nqus suab, tseem hu ua tus nqi NRC, yog txhais los ntawm American Society for Testing and Materials (ASTM). Txoj kev suav lej NRC siv tus nqi nruab nrab ntawm tus nqi nqus suab ntawm cov khoom siv ntawm plaub zaus ntawm 250, 500, 1000 thiab 2000 Hz. Vim tias tus nqi nqus suab ntawm cov khoom siv nqus suab nce ntxiv nrog rau qhov nce ntawm zaus, nws nyuaj rau cov khoom siv nqus suab dav dav kom nqus tau qee lub suab qis dua. Feem ntau, cov khoom uas muaj tus nqi nqus suab qis dua 0.2 hu ua cov khoom siv reflective, thiab cov khoom siab dua 0.4 tuaj yeem suav tias yog cov khoom siv nqus suab. Cov neeg siv khoom yuav tsum ceev faj thaum yuav cov khoom siv acoustic uas muaj tus nqi nqus suab ntau dua 1.0. Txawm hais tias nws siab dua li "kab tsim nyog" ntawm 0.4, cov nqi ntawm cov ntaub ntawv no tsis raug. American Society for Experimental Materials, uas tsim tus nqi NRC (suab nqus suab), siv tus lej "0" los sawv cev rau tus nqi nqus suab ntawm cov khoom siv uas tsis tuaj yeem nqus tau lub zog suab. Hauv lwm lo lus, cov khoom no tuaj yeem cuam tshuam tag nrho lub zog suab uas nws ntsib. Ntawm qhov tod tes, yog tias cov khoom siv nqus tag nrho lub zog suab, nws yog qhia los ntawm tus lej "1". Qhov tseeb, txhua yam khoom siv muaj cov yam ntxwv ntawm kev cuam tshuam thiab nqus lub zog suab. "0" thiab "1" tsuas yog cov nqi theoretical txwv kev siv. Tus coefficient nqus suab ib txwm ntawm cov khoom siv nqus suab yuav tsum nyob nruab nrab ntawm 0 thiab 1. tus nqi. Cov khoom siv nrog tus coefficient nqus suab ntau dua 1.0 txhais tau tias nws nqus tau lub zog suab ntau dua li nws cuam tshuam, uas yog qhov tsis yooj yim sua. Yog tias cov neeg siv khoom ntsib cov lus piav qhia zoo li no, lawv tuaj yeem nug ncaj qha txog qhov tseeb ntawm cov ntaub ntawv.
Suab ntaub
Raws li tau hais ua ntej lawm, kev rwb thaiv suab thiab kev nqus suab yog ob hom kev tswj suab sib txawv. Hauv ib qho kev nkag siab, kev nqus suab xav txog ntau dua qhov coefficient nqus ntawm cov khoom nws tus kheej, thaum kev rwb thaiv suab xav txog ob qho tib si qhov poob kis ntawm phab ntsa faib thiab cov yam ntxwv nqus ntawm chav thaum lub sijhawm kis suab. Yog li ntawd, nws tsis tuaj yeem zoo li qhov coefficient nqus suab (NRC) uas tau suav los ntawm kev siv qhov nruab nrab ntawm cov nqi, tab sis xav tau cov ntaub ntawv (kev poob kis suab thiab cov yam ntxwv zaus ntawm daim duab) thiab American Society for Testing and Materials los txiav txim siab cov qauv rau kev sib piv ntawm cov nqi tshwm sim rau chav kawm kis suab ntawm phab ntsa faib (STC). Txawm hais tias cov kev suav sib txawv, qhov poob kis suab sib txawv raws li zaus, thiab phab ntsa faib siv los tswj kev nthuav dav ntawm suab feem ntau yuav nce ntxiv thaum qhov zaus nce ntxiv.
Ib yam li lub suab yeej ib txwm raug nqus los yog cuam tshuam los ntawm cov khoom siv, nws yeej ib txwm hla dhau phab ntsa faib thiab xa suab mus rau sab tod ntawm chav. Tsis zoo li kev nqus suab, yog tias tus nqi txwv tsis pub siv 0 yog qhov uas lub suab tsis raug tso tawm, ces nws tus nqi txwv tsis pub siv 1 (qhov twg tag nrho lub suab raug tso tawm los ntawm phab ntsa faib) yog ua tau. Qhov no ua tau, piv txwv li, yog tias peb tawm hauv qhov rooj thiab qhov rai qhib hauv ib chav. Hauv chav tsis muaj kev tiv thaiv (piv txwv li, ib txheej phab ntsa faib), txhua qhov sib txawv hauv qhov qhib tuaj yeem ua rau txo qis kev poob suab, uas kuv xav tias nej txhua tus paub los ntawm koj lub tsev lossis chaw ua haujlwm. Ntau tus neeg yuav xav tias kev nce qhov tuab ntawm phab ntsa faib tuaj yeem ua rau kev poob suab ntau dua, tab sis raws li txoj cai ntawm kev rwb thaiv suab zoo, txawm tias koj ob npaug ntawm phab ntsa, qhov ntau ntawm kev rwb thaiv suab tsuas yog tuaj yeem nce ntxiv los ntawm 6dB.
Yog li, rau cov chaw kaw suab, cov chaw ua yeeb yam ntiag tug, thiab lwm qhov chaw uas muaj kev xav tau siab rau kev xa suab, kev tsim cov phab ntsa faib ob chav yog txoj kev siv ntau tshaj plaws. Kev tsim cov phab ntsa faib ob chav kuj yog ib qho teeb meem yooj yim, piv txwv li, ntawm ob phab ntsa yuav raug sau nrog cov txheej khoom sib txawv (xws li cov ntaub ntawv nqus suab) kom ua tiav kev rwb thaiv suab zoo dua. Cov txheej khoom yuav tsum tau muab tso rau hauv txheej huab cua, kom cov suab nthwv dej tuaj yeem ua rau muaj kev sib kis thib ob. Kev dig muag sau cov txheej khoom ntawm ob phab ntsa yuav tsis tas yuav ua tiav cov txiaj ntsig rwb thaiv suab xav tau.
Yog xav paub ntxiv txog SINOYQX Melamine Foam, thov hu rau peb ntawm [email protected] lossis hu rau peb: + 86-28-8411-1861.
Qee cov duab thiab cov ntawv luam tawm los ntawm Is Taws Nem, thiab cov ntawv pov thawj yog los ntawm tus sau thawj. Yog tias muaj kev ua txhaum cai, thov hu rau peb kom tshem tawm.