Thermal conductivity ntawm polystyrene, nta thiab cov ntaub ntawv thickness

Lub thermal conductivity ntawm polystyrene ua npuas ncauj yog ib tug ntawm cov tseem ceeb yam ntxwv uas xav nyob rau hauv tsis tsuas cov tub txawg, tiam sis kuj zoo tib yam tau txais kev pab. Qhov no cov ntaub ntawv uas yog hu ua ib thermal rwb thaiv tsev ua npuas ncauj thiab uas yog 98% ntawm cov huab cua. Nws yog kaw nyob rau hauv lub polystyrene ua npuas ncauj hlwb.

Tus qauv yog kev ruaj ntseg kiag rau kev kho mob, yog li cov ntaub ntawv uas yog siv rau qhov siv thiab ua cov khoom noj ntim. Nws yog ib qho yooj yim mus ua hauj lwm, nws tau pom nws thoob plaws nyob rau hauv kev tsim kho kev lag luam, thiab kuj muaj ib tug uas tsis muaj nqi.

Yuav ua li cas koj yuav tsum paub txog lub txhab polystyrene thermal conductivity

Thermal conductivity ntawm polystyrene yog heev tsawg, txij li thaum huab cua uas yog lub hauv paus cov ntaub ntawv uas kuj muaj cov yam ntxwv. Yog li ntawd, cov tau piav parameter ntawm kev rho tawm mas nws txawv ntawm 0,037 mus 0,043 W / MK, raws li hais rau saum huab cua, qhov no cov yam ntxwv yog 0,027Vt / MK.

Txhab polystyrene yog ua raws li GOST 15588-86 thiab muaj ib tug superb kev txuag, ua cov nqe lus ntawm lub lag luam, yog tau txo nqi cua sov thiab tiv thaiv los ntawm khov. Cov khoom no khaws cia txawm thaum raug tsawg kub thiab high humidity, txawm li cas los siv polystyrene tau nyob rau hauv qhov chaw cia, raws li zoo raws li nyob rau hauv lub tub yees designs.

Lub thermal conductivity ntawm polystyrene yog tsawg tsawg, yog li ntawd qhov kev siv ntawm cov khoom no yuav ua tau, tsis tsuas yog rau cov domestic tab sis kuj rau sab nrauv finish. Txawm li cas los, qhov no feature yuav sib txawv nyob ntawm seb cov kev ceev. Lub siab dua nws yog, qhov ntau dua styrene cov ntsiab lus, cov polystyrene yog zuj zus khaws thaum tshav kub kub. Piv txwv li, nyob rau hauv cov ntaub ntawv ntawm extruded polystyrene ua npuas ncauj, nws thermal conductivity yuav 0,028Vt / MK, vim hais tias styrene granules nyob rau hauv cov ntaub ntawv no yog nyob rau hauv ib daim ntawv qauv, raws li tsis muaj kis therebetween.

Kev sib piv ntawm thermal conductivity nyob rau hauv ntau hom

Kev sib piv, koj yuav saib tau ob peb hom polystyrene, ceev thiab thermal conductivity uas txawv. Ceev PSB-C15 yog tsawg tshaj li 15 kg / m ^3, thaum lub sij hawm tsis pub tshaj ntawm thermal conductivity yog los ntawm 0.07-0.08 W / MK. Nrog hais txog lub hom PSB-C35, nws ceev yog sib npaug zos rau cov kev txwv ntawm 25,1 rau 35 kg / m ^3, thaum lub thermal conductivity yog 0,038 W / MK. Cov muag khoom yuav pom ntau thiab extruded polystyrene ua npuas ncauj. Lub hom 35 ceev mas nws txawv ntawm 33 rau 38, whereas lub thermal conductivity sib npaug zos rau 0.03.

Yog hais tias ua ntej koj kos tus cim rau 45, cov thawj parameter yuav sib txawv los ntawm 38,1 45, whereas lub thib ob yog sib npaug zos rau 0,032. Thermal conductivity ntawm polystyrene yog tsawg piv nrog rau qhov no yam ntxwv xam qhovkev rau lwm yam ntaub ntawv. Piv txwv li, txhab av nplaum ntawm ib tug ntom ntawm 1200 kg / m ³ muaj ib tug thermal conductivity sib npaug zos rau 0,58.

Muab piv rau lub cua sov conductivity ntawm polystyrene nrog rau lwm cov ntaub ntawv

Nyob rau hauv muaj ntau yam teb kev lag luam thiab kev tsim kho txhab polystyrene siv niaj hnub no. Lub thermal conductivity, cov kev sib piv ntawm cov uas yuav tau hais hauv qab no, yog theej tsawg nyob rau hauv cov ntaub ntawv no. Tab sis nyob rau hauv cov mineral wool no cov yam ntxwv mas nws txawv ntawm 0,07 mus 0.08 W / MK. Raws li rau ua vaj tse, lub thermal conductivity nws yog sib npaug zos rau 1.30, thaum lub pob zeb - 2,04.

Hnav sau ua ib pawg thiab ua npuas ncauj yus muaj los ntawm ib tug thermal conductivity sib npaug zos rau 0,58 thiab 0,37, ntsig txog. Peb txhab polystyrene, rau kev sib piv, lub thermal conductivity yog 0,028Vt / MK. Lub thermal conductivity ntawm polystyrene ua npuas ncauj thiab kuj ntau heev piv. Nyob rau hauv thawj cov ntaub ntawv, cov nqi no yog 0,07, nyob rau hauv cov ntaub ntawv ntawm daim hlau.

Ntsiab nta: kev nyab xeeb, soundproofing thiab windproof yam ntxwv

Txhab polystyrene muaj kev ruaj ntseg, thiab koj yuav siv nws dua. Nyob rau tib lub sij hawm cov ib puag ncig yuav tsim pes tsawg emissions. Raws li kev tshawb fawb, nyob rau hauv cov lug ntawm polystyrene, styrene yog tsis pom yus. Raws li rau lub soundproofing thiab lub uantej, ces siv Styrofoam yog tsis tsim nyog los thov ntxiv ntaub ntawv uas txhim khu lub windproof muaj nuj nqi thiab soundproofing.

Yog hais tias lub suab-absorbing muaj peev xwm ua yuav tsum tau ntxiv dag zog rau, lub thickness ntawm cov khoom txheej yuav tsum tau nce. Lub thermal conductivity ntawm XPS koj twb paub, tab sis qhov no yog - tsis yog yam ntxwv, uas yuav tsum tau paub ua ntej yuav nriav cov khoom siv no. Piv txwv li, polystyrene yog tsis hygroscopic, yog li ntawd, nws tsis nqus dej thiab dej, tsis swell thiab tsis deform, thiab tsis yaj nyob rau hauv cov kua. Thaum muab tso rau hauv dej txhab polystyrene, nws yuav txeem hauv cov qauv, tsuas yog 3% ntawm tus luj phaj, thaum lub khoom ntawm ib tug cov ntaub ntawv uas nyob twj ywm unchanged.

Lub chav thiab dej yog haum yooj yim mus tuaj tawm ntawm styrofoam, yog li kev kho mob yuav tsum tau npaum li cas los tiv thaiv kom txhob tsim ntawm hws. Ua li no, tus tsim kev cai yog respected. Ya kuj polystyrene tso cai rau siv nyob rau hauv rwb thaiv tsev ntawm lub hauv paus, qhov twg lub inevitable kev sib cuag nrog cov av khoom.

Ntxiv nta: lom thiab tshuaj inertness

Rwb thaiv tsev ua npuas ncauj board, uas twb tau hais saum toj no thermal conductivity, yog ruaj khov rau tshuaj lom neeg thiab lom yam. Lub zog ntawm cov khoom yuav ua raws li, txawm hais tias nws cov qauv yuav muaj cuam tshuam:

• xab npum tshuaj;
• acid;
• ntsev dlaws los ntawm hiav txwv dej hom;
• tshuaj dawb tso cov neeg ua hauj;
• ammonia;
• gypsum;
• dej-soluble cov xim;
• nplaum kev daws teeb meem;
• txiv qaub;
• xis mas.

Raws li rau lub acid, ces nyob rau hauv txhab polystyrene yuav tsum tsis txhob cuam tshuam los ntawm nitric acid thiab concentrated acetic acid. Thaum lub sij hawm installation yuav tsum tiv thaiv kom txhob nkag tau mus rau cov ntaub ntawv uas nas tsuag thiab kab-rwg, vim hais tias lawv muaj peev xwm ua rau puas tsuaj rau cov qauv. Nyob rau hauv tus ntawm qhob dlaws tej zaum cov tawg ua me me cov khoom raws li raug organic solvents. Stability yuav txiav txim tus piv ntawm qhib thiab kaw pores, nyob ntawm seb lub hom thiab hom rwb thaiv tsev.

Hluav Taws Kub polystyrene

coefficient ntawm thermal conductivity txhab polystyrene tau hais saum toj no, tab sis nws yog ib qho tseem ceeb kom paub ntau ntxiv txog qhov hluav taws kub teeb meem cov khoom uas yog combustible, tab sis nws muaj zoo hluav taws kuj, vim hais tias nws pib-tiv cav tseb kub yog 4910 ° C. Yog hais tias ib tug sib piv ntawm qhov ntsuas no nrog rau cov ntoo, nws yog 1.8 lub sij hawm ntau dua, vim hais tias cov ntoo yuav tsum txaus xwb 2600 ° C.

Flammability thiab muaj peev xwm ua kom muaj tshav kub

Yog hais tias qhov hluav taws kub yuav tawm rau 4 vib nas this, cov khoom yog nws tus kheej-damped. Nyob rau hauv lub combustion txheej txheem yuav ua kom muaj tshav kub rwb thaiv tsev nyob rau hauv ib tug ntim ntawm 1000 MJ / m ^3, kev xav txog ntoo, daim duab yog hom twg los ntawm 7000 mus rau 8000 MJ / m ^3, qhov no qhia tau hais tias qhov kub thiab txias yuav tsawg thaum lub sij hawm combustion polystyrene. Ntawm kev muag khoom hnub no muaj peev xwm yuav nrhiav tau nws tus kheej-extinguishing txhab polystyrene, uas yog tsim nrog rau qhov sib ntxiv ntawm nplaim retardants. Tab sis thaum lub sij hawm, cov nyhuv yog poob, thiab cov ntaub ntawv uas belongs rau cov pab pawg neeg ntawm combustibility T2 yuav nws thiaj li yuav muab tso rau cov chav kawm ntawv T4.

Lub thickness ntawm lub polystyrene

Txhab polystyrene, thermal conductivity, lub thickness ntawm cov uas koj yuav tsum paub yog hais tias koj npaj los yuav qhov rwb thaiv tsev yog ua hnub no los ntawm txawv manufacturers. Cov ntawv yuav tsum muaj nyob rau hauv thickness rau hauv lub chav los ntawm 20 mm mus rau 20 cm. Txawm li cas los, muaj ntau yam kev pab hais txog kev uas daim ntawv yog zoo dua mus xaiv. Yuav kom txiav txim no tus nqi, koj yuav tau nug, yog dab tsi kuj mus tshav kub hloov. Ntawm no txhua yam yuav nyob ntawm seb lub teb chaws ntawm thaj av ntawd. Piv txwv li, qhov chaw ntawm Moscow nyob rau hauv cov kuj ntawm cov phab ntsa yuav tsum yog sib npaug zos rau 4.15 m ² ° C / W, kev xav txog rau yav qab teb cov cheeb tsam, yuav muaj txaus 2.8 ^m2 ° C / Watt.