Extruded npuas: specifications, thickness, ceev, thermal conductivity

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

Kev tsim kho kev lag luam niaj hnub niaj hnub no tsuas yog hla nrog ntau yam khoom siv rwb thaiv tsev thermal. Lawv txawv tsis tau tsuas yog nyob rau hauv cov yam ntxwv ntawm manufacturing technology, tab sis kuj nyob rau hauv lawv cov khoom, raws li zoo raws li lawv lub hom phiaj. Txawm li cas los xij, ib qho ntawm cov neeg nyiam tshaj plaws yog extruded ua npuas ncauj, uas yuav tau tham hauv qab no. Nws tuaj yeem siv tsis tau tsuas yog rau thermal rwb thaiv tsev, tab sis kuj los tiv thaiv lub tsev ntawm cov suab nrov sab nraud. Txhawm rau kom ua tau zoo, koj tuaj yeem tso cov khoom hauv ob peb txheej.

Kev piav qhia

EP muaj qhov tshwj xeeb thermal rwb thaiv tsev zoo, thiab nyob rau hauv tsos nws zoo li ua npuas ncauj yas, uas yog siv niaj hnub no rau facade rwb thaiv tsev. Specifications deb tshaj cov tsoos ua npuas ncauj. Nws yog tsim los ntawm polystyrene granules, uas yog melted nyob rau hauv lub siab kub thiab ua ib tug viscous xeev. Nyob rau hauv kev kub siab, carbon los yog freon yog txhaj rau hauv lub chamber, txhua yam yog ib tug foaming neeg sawv cev. Lub resulting loj yog extruded los ntawm lub extruder thiab tsim ib tug tej yam zoo li.

rau kev siv

Cov thev naus laus zis no tso cai rau koj los tsim ua npuas ncauj extruded, uas muaj cov qauv kaw ntawm tes thiab tiv thaiv kev nkag mus ntawm tshav kub thiab ya raws. Nws tuaj yeem tiv taus qhov hnyav ib puag ncig xws li alkalis thiab acids, thiab nws tuaj yeem siv rau qhov kub tsis tshua muaj siab, uas tuaj yeem ncav cuag -50 ° C. Yog tias peb tham txog qhov kub siab tshaj plaws, ces nws yuav tsum khaws cia ntawm +70 ° C.

Khoom thickness

Yog tias koj txiav txim siab yuav ua npuas ncauj extruded, koj yuav tsum paub tias nws lub thickness yog dab tsi. Qhov kev ntsuas no txawv rau cov tuam txhab sib txawv, yog li koj tuaj yeem nrhiav cov phiaj xwm ntawm kev muag khoom, xws li 20 hli mus rau 20 cm. Txhawm rau ua qhov no, koj yuav tsum paub tias dab tsi yog qhov kev tiv thaiv kom sov hloov ntawm cov khoom siv los ntawm cov khoom siv uas xav tau rwb thaiv tsev.

Muaj cov cai thiab cov cai tswjfwm uas qhia txog qhov nominal heat transfer resistance nyob rau qee thaj tsam. Piv txwv li, nyob rau hauv nruab nrab ntawm Moscow, qhov kev tiv thaiv ntawm phab ntsa yuav yog 4.15 m ² ° C / W, thaum rau yav qab teb cheeb tsam no daim duab yuav siab tshaj plaws ntawm 2.8 m. 2 °C/Tue

Thaum koj txiav txim siab qhov xwm txheej ntawm cheeb tsam, koj yuav tsum suav qhov tsis kam ntawm cov khoom siv thiab rho tawm los ntawm cov qauv. Qhov txiaj ntsig tshwm sim yuav qhia qhov tsis kam ntawm polystyrene nthuav dav. Yog tias koj muaj cov txiaj ntsig, tom qab ntawd raws li lub rooj koj yuav tuaj yeem txiav txim siab qhov xav tau ntawm cov thermal rwb thaiv tsev.

Khoom ntom ntom

Extruded npuas, qhov ntom ntawm 28 txog 40 kg / m 3, yog sawv cev los ntawm PBS-S-40 hom. Qee lub sij hawm cov chaw tsim khoom sim ua yuam kev rau tus neeg yuav khoom, vim tias nws yuav siv nyiaj tsawg dua los tsim cov polystyrene ua npuas ncauj ntawm qhov ntom ntom. Yog li ntawd, koj yuav tsum tsis txhob tsom rau tus lej hauv lub npe, koj yuav tsum nug txog cov yam ntxwv ntawm kev ua haujlwm uas yuav tsum tau qhia hauv daim ntawv pov thawj.

Nws yuav zoo yog tias koj tau qhia raws nraim li cas cov khoom tsim. Yog tias qhov ceev yog 35kg / m ³ , ces nws yog extrusion. Raws li ib txwm muaj, koj tuaj yeem ua tiav qhov ceev uas tsis pub tshaj 17 kg / m ^3.

EC thermal conductivity

Extruded npuas, thickness uas tau hais los saum toj no, yuav tsum tau xaiv los ntawm cov neeg siv khoom tsis yog los ntawm cov ntaub ntawv no, tab sis kuj suav nrog cov thermal conductivity. Cov rwb thaiv tsev tau piav nyob rau hauv tsab xov xwm yog ib qho loj ntawm huab cua npuas uas tau sib cais los ntawm nyias plhaub ntawm polystyrene. Hauv qhov no, qhov sib piv yog: 98% huab cua thiab 2% polystyrene. Qhov tshwm sim yog ib hom ua npuas ncauj tawv. Cov huab cua yog daig hauv cov npuas, ua tsaug rau cov khoom uas khaws cov cua sov. Qhov sib txawv ntawm huab cua yam tsis muaj kev txav mus los yog qhov ntsuas kub zoo heev.

Yog piv nrog cov ntaub plaub ntxhia, nws cov thermal conductivity yuav siab dua. Nws yuav ua rau cov ntsuas ntawm 0.028 txog 0.034 W / (m K). Lub denser nws yuav yogua npuas ncauj, qhov ntau dua tus nqi ntawm cov coefficient ntawm thermal conductivity. Yog li, rau cov npuas extruded uas nws qhov ceev yog 45 kg / m 3, qhov ntsuas no yog 0.03 W / (m·K). Nyob rau tib lub sijhawm, nws yuav tsum raug coj mus rau hauv tus account tias qhov kub thiab txias yuav tsum tsis txhob siab tshaj +75 ° C thiab qis dua -50 ° C..

Basic nta

Extruded foam, thermal conductivity uas tau hais los saum no, muaj qee yam khoom, suav nrog yuav luag tsis muaj dej nqus thiab qis thermal conductivity. Txawm hais tias lub phaj yog tag nrho rau hauv dej rau 10 hnub, lub hlwb yuav tsis cia cov dej los ntawm, vim lawv tau insulated, tsuas yog sab qhib hlwb yuav puv. Thermal conductivity tau tham saum toj no, nws yuav tsum tau hais tias qhov parameter no tsawg dua piv rau lwm cov ntaub ntawv thermal rwb thaiv tsev. Plasticity kuj tsis siab, tab sis qhov fragility yog impressive, tshwj xeeb tshaj yog yog hais tias peb kos ib tug parallel nrog nthuav polystyrene.

Cov khoom muaj peev xwm xa lub teeb, thiab nws lub zog compressive siab heev. Thermal rwb thaiv tsev tsis rot thiab yog heev Frost-resistant. Extruded npuas yog cuam tshuam-resistant:

• acids;
• dej;
• caustic alkalis;
• roj;
• bleach;
• saline daws;
• dyes;
• cawv;
• hydrocarbon;
• cement;
• acetylene;
• paraffin;
• propane;
• Ybutane.

Notsis hais txog kev nyab xeeb rau tib neeg.

Specifications

Extruded npuas, cov yam ntxwv ntawm ib feem tau hais los saum toj no, muaj qhov nqus dej tsawg kawg nkaus uas txawv ntawm 0.2 txog 0.4%. Qhov hnyav me me thiab tuaj yeem sib txawv ntawm 25 txog 45 kg / m 3. Ntawm qhov tsis zoo, ib tus tuaj yeem tawm qhov tsis zoo vapor permeability, uas yog 5 npaug qis dua piv rau cov khoom ua npuas ncauj. Tus nqi no yog 0.013 Mg / (mhPa). Qhov no ua rau kom qhov yuav tsum tau ua rau lub qhov cua ntawm lub tsev, uas yuav tsum tau insulated nrog extruded polystyrene ua npuas ncauj.

Extruded npuas, cov yam ntxwv ntawm cov khoom uas yuav txaus siab rau cov neeg siv khoom, muaj lwm qhov tsis zoo, uas tau hais tawm hauv kev kub hnyiab. Cov khoom yog nyob rau hauv chav kawm G3-G4, tab sis niaj hnub no ntau manufacturers siv tshwj xeeb additives uas ua rau nws muaj peev xwm mus cuag yuav luag tsis-combustible yam ntxwv. Yog li ntawd, qhov no thermal rwb thaiv tsev tej zaum yuav raug ntaus nqi rau chav G1 thiab B1.

Txawm li cas los xij, yog tias koj saib cov cai thiab kev cai huv huv, nws tuaj yeem hais meej tias cov khoom siv hluav taws xob extrusion, uas muaj cov nplaim hluav taws kub hnyiab, tuaj yeem siv rau hauv cov tsev. Yog tias lub tsev yuav tsum tau ua kom muaj kev nyab xeeb ntawm hluav taws, ces yuav tsum tau siv extruded polystyrene ua npuas ncauj, uas belongs rau combustibility pawg G3.

Zaj lus

Tsoom fwv txoj cai lij choj ntawm cov khoom siv hluav taws xob hluav taws xob hluav taws xob tau raug tso tawm tsis ntev los no, nws muaj cov ntaub ntawv ntawm cov ntsuastoxicity ntawm combustion khoom. Rau cov khoom zoo polystyrene foams, toxicity tsis tshaj T2, uas qhia tau hais tias qhov no thermal rwb thaiv tsev yog me ntsis txaus ntshai. Qhov ntsuas no muaj nyob hauv cov ntaub ntawv ntoo, piv txwv li, parquet. Lub neej kev pab cuam yog piv rau lub neej ntawm lub tsev, thiab rau cov neeg tsim khoom zoo no daim duab mus txog 40 xyoo.