Ua npuas ncauj vapor permeability: muaj pes tsawg leeg, khoom, qauv, kev faib tawm, daim ntawv thov thiab kev nyab xeeb

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Raws li kev tshawb fawb ib puag ncig, txog li 40% ntawm hluav taws xob thiab hluav taws xob tsim hluav taws xob nyob rau sab qaum teb Hemisphere yog siv los ua cua sov rau kev lag luam, thaj chaw thiab lwm qhov chaw. Qhov no ua rau lub fact tias high-zoo thermal rwb thaiv tsev ntawm lub tsev coj cov txiaj ntsig tseem ceeb ntawm kev txuag nyiaj txiag. Ntawm lwm yam, qhov no tso cai rau koj kom ua tiav qhov chaw nyob zoo. Lub luag haujlwm ntawm ib qho ntawm cov khoom siv hluav taws xob feem ntau yog ua npuas dej, nws tseem hu ua polystyrene ua npuas ncauj, lossis EPS.

vapor permeability

Qhov vapor permeability ntawm ua npuas ncauj yog tsawg heev. Nyob rau hauv kev xyaum, qhov no txhais tau hais tias ib tug barrier nyob rau hauv daim ntawv ntawm polystyrene ua npuas ncauj yuav nyob rau hauv txoj kev ntawm chav tsev los ntawm sab hauv tsev mus rau sab nraum. Sab nraum cov tsev, qhov kub thiab txias feem ntau qis dua hauv tsev. Yog li ntawd, lub chav yuav tig mus rau hauv condensate, vim hais tias cov dej yuav khaws cia nyob rau hauv cov cheeb tsam uas lub thermal rwb thaiv tsev raws li phab ntsa qauv. Qhov no ua rau muaj kev pheej hmoo ntawm cov khoom ntub dej uas nyob ze.

Txhawm rau kom cov vapor permeability ntawm cov npuas dej kom tsis txhob dhau los ua ib qho kev rho tawm thaum siv cov rwb thaiv tsev no, koj yuav tsum xam cov dej lwg kom raug thiab txiav txim siab seb qhov rwb thaiv tsev thickness xaiv. Nyob rau hauv rooj plaub no, tshem tawm cov dej lwg taw tes yuav ua tau tshaj li qhov txwv ntawm cov khoom ntsia. Ib qho kev daws teeb meem tsim nyog hauv qhov teeb meem no yog kev teeb tsa ntawm lub ventilated facade. Cov yam ntxwv ntawm vapor kis tau tus mob ntawm lub tshav kub insulator tsis suav tias yog nyob rau hauv kev sib cais los ntawm cov ntsiab lus ntawm ib qho kev tsim. Nws yog ib qho tseem ceeb uas yuav tau txiav txim siab seb cov phab ntsa yog ua los ntawm, lub hauv paus siab npaum li cas, thiab seb qhov kev teeb tsa ntawm chav dej thiab cov dej tsis huv tau ua tiav.

YYuav ua li cas kom vapor permeability ntxiv

Qhov vapor permeability ntawm ua npuas ncauj yog 0.05 mg / (m xyoo Pa). Hauv qhov no, nws siv tuaj yeem ua rau tsim pwm. Feem ntau, tus cwj pwm no tsis yog tsuas yog qhov tsis zoo xwb, tab sis kuj yog qhov zoo. Qhov zoo dua yog tias thaum tso cov rwb thaiv tsev thermal tsis tas yuav tsim cov vapor-permeable barrier. Tab sis qhov kev rho tawm tuaj yeem tshwm sim yog tias lub tshuab teeb tsa tau raug ua txhaum cai. Nyob rau hauv cov npuas dej, raws li tau hais los saum toj no, cov dej noo yuav tsim, uas yuav ua rau kev puas tsuaj ntawm ob qho tib si cov khoom siv nws tus kheej thiab cov txheej rwb thaiv tsev.

Cov vapor permeability ntawm cov yas ua npuas ncauj yuav tsis cuam tshuam rau microclimate ntawm thaj chaw nyob rau hauv ib txoj kev yog tias nws tau ntsia sab nraum lub tsev. Koj yuav tsum tsis txhob xav tias ntawm kev muag khoom koj tuaj yeem pom polystyrene ua npuas ncauj nrog vapor permeability sib txawv. Cov yam ntxwv notseem zoo li qub, tsis hais qhov ceev thiab ua npuas ncauj. Qhov ntsuas no zoo ib yam li lub log cabin ntawm ntoo qhib lossis ntoo thuv.

qauv thiab muaj pes tsawg leeg

Styrofoam yog cov khoom siv dawb nrog cov qauv ua npuas ncauj, uas 2% polystyrene thiab 98% huab cua. Rau kev tsim khoom, ib qho kev siv tshuab rau foaming polystyrene granules tau tsim. Cov kab mob microscopic no raug kho nrog chav kub kub hauv cov kauj ruam tom ntej. Cov txheej txheem no rov ua dua ob peb zaug, uas tso cai rau txo qhov hnyav thiab qhov ntom ntawm cov khoom. Qhov npaj loj yog qhuav kom tshem tawm cov seem seem. Cov khoom siv raw yog nyob rau hauv qhov qhib cua hauv lub tank kom qhuav. Nyob rau theem no, tus qauv siv rau nws cov duab kawg.

Cov granules muaj qhov loj me ntawm 5 txog 15 hli. Thaum lawv qhuav, lawv muab cov duab tsim nyog. Nias yog nqa tawm ntawm cov nroj tsuag lossis cov tshuab uas tig cov khoom mus rau hauv ib yam dab tsi zoo li daim ntawv cog lus compact. Sai li cov npuas raug nias, nws raug rau qhov kub kub, vim li ntawd, cov blocks nrog qee qhov tsis raug tsim. Lawv raug txiav kom loj nrog lub cuab yeej. Cov ntawv yuav muaj qhov loj me uas tsis yog tus qauv. Daim ntawv thickness txawv ntawm 20 mus rau 1000 hli, thaum qhov ntev ntawm cov laug cam tuaj yeem yog los ntawm 1000 x 500 mm txog 2000 x 1000 mm.

Basic nta

Thaum koj paub tias vapor permeability ntawm ua npuas ncauj, koj tuaj yeem nug txog lwm yam ntxwv, nrog raunta. Ntawm lwm tus, nws yuav tsum tau sau tseg:

• qis thermal conductivity;
• suab nrov thiab cua tsis muaj zog;
• nqus dej tsawg;
• durability;
• zog;
• tawm tsam tshuaj lom neeg thiab tshuaj lom neeg.

Raws li thermal conductivity, nws yog qhov zoo tshaj plaws ntawm kev ua npuas ncauj. Qhov no yog vim lub fact tias cov hlwb nyob rau hauv lub hauv paus muaj cov duab ntawm ib tug polyhedron. Lawv loj hlob mus txog 0.5 mm. Lub voj voog kaw ntawm tes txo cov cua sov hloov thiab txwv kev nkag mus ntawm qhov txias.

Suab thiab cua

Lub thickness thiab vapor permeability ntawm npuas - qhov no tsis yog txhua yam koj yuav tsum paub thaum yuav khoom. Nws yog ib qho tseem ceeb kom tau txais kev txaus siab rau lub suab thiab windproof zog. Yog tias cov phab ntsa yog insulated nrog npuas, lawv yuav tsis xav tau cua tiv thaiv. Lub suab pov thawj ntawm lub tsev yuav raug txhim kho. Yog li, cov khoom pov thawj suab yog vim lub cellular qauv.

txhawm rau muab cov rwb thaiv tsev zoo los ntawm cov suab nrov sab nraud, koj yuav tsum tau nteg ib txheej ntawm cov khoom, lub thickness ntawm 3 cm.. Lub vapor permeability ntawm facade ua npuas ncauj tau hais los saum no. Txawm li cas los xij, tus cwj pwm no tsis yog tib qho uas koj yuav tsum paub txog. Nws tseem yog ib qho tsim nyog yuav tau xav txog kev ua haujlwm ntev. Cov phaj ntawm cov insulator no tsis hloov lawv lub cev lub zog rau lub sijhawm ntev. Lawv tau npaj siab ua siab ntev yam tsis muaj kev sib tsoo lossisdeforming. Ib qho piv txwv zoo ntawm qhov no yog kev tsim kho ntawm txoj kev khiav, qhov twg polystyrene ua npuas ncauj tau ntev tau siv dav. Qib ntawm lub zog yog nyob ntawm qhov tuab ntawm cov laug cam thiab qhov tseeb installation.

Qhov vapor permeability ntawm 25 qhov ntom ntom ua npuas tseem zoo ib yam li tau hais los saum toj no. Thawj qhov ntsuas tsis yog nyob ntawm lwm yam ntxwv ntawm txhua txoj kev. Tab sis ua ntej yuav cov khoom siv hluav taws xob no, nws tseem ceeb heev uas yuav tsum paub txog kev tiv thaiv cov tshuaj lom neeg thiab cov tshuaj lom neeg. Cov phiajcim tiv taus qhov hnyav ib puag ncig, kev daws teeb meem ntawm alkalis, ntsev thiab acids, dej hiav txwv, gypsum thiab txiv qaub. Kev nthuav dav polystyrene tuaj yeem cuam tshuam nrog bitumen, cement, dej-soluble thiab silicone xim. Cov tshuaj tuaj yeem cuam tshuam rau daim ntaub tsuas yog nrog lub sijhawm ntev. Qhov no siv rau cov khoom siv roj zaub thiab tsiaj txhu, nrog rau cov roj av thiab roj av.

Qhov vapor permeability ntawm ua npuas ncauj thiab extruded polystyrene ua npuas ncauj tau hais los saum toj no. Ua ntej yuav cov khoom siv no, nws tseem ceeb heev kom paub tias koj tuaj yeem siv cov rwb thaiv tsev ua cov khoom siv hauv tsev, tshem tawm kev sib cuag nrog cov tshuaj lom neeg, nrog rau cov dej saturated hydrocarbons thiab cov kuab tshuaj organic.

Kev nyab xeeb hluav taws

Vapor permeability thiab hluav taws kev nyab xeeb ntawm polystyrene yog ib qho ntawm cov yam ntxwv tseem ceeb. Cov khoom siv hauv tsev niaj hnub yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom muaj kev nyab xeeb hluav taws thiab ua kom pom kev tiv thaiv kom qhib nplaim taws thaum ua haujlwm. Styrofoamtsis txhawb combustion thiab flashes ntawm qhov kub thiab txias uas siab tshaj 2 npaug ntawm cov ntoo. Lub zog thaum lub sij hawm combustion ntawm npuas yas yog tso tawm 8 lub sij hawm tsawg tshaj li thaum lub sij hawm combustion ntawm ntoo. Qhov no qhia tias qhov kub ntawm qhov hluav taws kub yuav qis dua.

Yuav ua li cas saib xyuas

Styrofoam tuaj yeem ignite tsuas yog thaum sib cuag nrog cov nplaim taws. Thaum txiav tawm ntawm qhov kev sib cuag, cov npuas nws tus kheej tua tsis pub dhau 4 vib nas this. Cov ntsuas no qhia tias nws yog cov khoom siv hluav taws kub tsis haum rau kev tsim kho.

Daim ntawv thov

Cov huab cua permeability ntawm ua npuas ncauj yog tsawg heev, ua rau nws tsis haum rau siv sab hauv tsev. Tab sis cov qauv ntawm cov khoom siv yog cellular, uas ua rau cov khoom siv lub suab nrov thoob ntiaj teb thiab cov cua sov insulator hauv kev tsim kho. Kev nthuav dav polystyrene yog siv los ua cov khoom lag luam xws li cov ntawv ua npuas dej, cov yeeb nkab rwb thaiv tsev thiab ua npuas ncauj plhaub. Cov khoom ntim cov khoom ntim ntawm cov hlab ntsha, uas ua rau lawv cov buoyancy. Styrofoam yog siv los ua bibs, lifejackets thiab ntab. Nws yog siv los thauj cov neeg pub khoom nruab nrog cev, ua cov ntim kho mob, thiab siv rau lwm yam kev xav tau hauv tshuaj.

PPS tau pom nws daim ntawv thov dav hauv kev tsim kho thiab kho kom zoo nkauj, nws yog siv los ua ib qho kev ruaj khov. Nws kuj ua hauj lwm raws li ib tug tshav kub insulator nyob rau hauv ntsuas ntsuas. Nws tuaj yeem siv los ua ntim rau cov khoom kim thiab tsis muaj zog. Nws ua raws li lub substrate rau cov khoom noj khoom haus thiab ua raw khoom rau kev tsim cov phaj pov tseg. Los ntawmStyrofoam feem ntau yog ua cov khoom zoo nkauj. Nws tuaj yeem ua rau sab nrauv thiab sab hauv kho kom zoo nkauj ntawm cov tsev, nrog rau thaj chaw rau ntau lub hom phiaj. Nws yog siv los ua cov pobzeb qab nthab, cov rooj tog zaum, Christmas decorations, architectural décor, thiab vaj décor.

Ua Npuas Ncauj

Styrofoam hnub no tau paub ntau yam, ntawm lawv yuav tsum tau qhia:

• Ypolystyrene;
• Ypolyurethane;
• extrusion ua npuas ncauj;
• polyvinyl chloride;
• extruded polystyrene;
• polyethylene ua npuas ncauj.

PPS tuaj yeem ua los ntawm nias lossis tsis nias. Nws tsis yooj yim rau kev paub qhov txawv ntawm cov ntaub ntawv no. Cov xovxwm ntau yam yog tsim los ntawm txoj kev muaj zog adhesion ntawm granules, yog li cov webs no nyuaj rau tawg. Extruded polystyrene yuav luag zoo ib yam li cov tsis muaj xovxwm. Cov khoom muaj qhov tsis zoo, qhia nyob rau hauv qhov tseeb tias muaj kab noj hniav ntawm cov granules qhov twg dej vapor tuaj yeem nkag mus. Nyob rau hauv qis-zero kub, noo noo accumulates muaj, uas ua rau kom maj mam puas ntawm cov khoom. Hauv qhov no, extruded ua npuas ncauj yeej me ntsis. Nyob rau hauv tsos, nws muaj ib tug homogeneous qauv. Ntawm qhov zoo ntawm cov khoom siv no yuav tsum tau hais txog:

• lub neej ua haujlwm ntev;
• muaj zog ntau dua.

Polyethylene ua npuas ncauj yog hloov tau yooj yim. Nws feem ntau siv daim ntawv ntawm cov nplooj ntawv translucent ntawm ntau yam thicknesses hloov tau. Feem ntau siv hauv lub neej niaj hnub yog polyurethane ua npuas ncauj. Nyob rau hauv cov neeg nws yog hu ua npuas roj hmab thiab txawvelasticity.