Yog polyurethane ua npuas ncauj ua npuas dej kub tiv taus?
Lus Teb luv:Nws nyobCov. Polyurethane (PU) ua npuas tsis yogzoo li ib txwmSuper tshav kub-resistant, tab sis nws kev ua tau zoo sib xws tuaj yeem sib txawv raws li nws hom, cov khoom xyaw, thiab yuav ua li cas nws ua engineered. Cia dhia rau cov ntsiab lus tsis muaj lub Yalgon!
1. Cov Kev Tiv Thaiv Tshav Kub Kub: Dab tsi yog qhov txwv?
Li Cas Pu Ua Npuas Ncauj(zoo li cov khoom hauv koj lub cuj npe cushions) pib tawm tsam ib puag ncig80-120 Qib(176-248 Qib F). Ntawm cov temps no, nws ua muag muag, poob duab, thiab tej zaum kuj yaj thiab scorch15.
Rigid PU Ua npuas ncauj(siv nyob rau hauv rwb thaiv tsev) ua tau zoo dua, tuav mus txog150-200 degree(302-392 Degree F) Ua ntej rhuav Down11.
Tiamsis... Yog tias koj crank lub tshav kub saum toj no300 Degree(572 Qib F), feem ntau ua npuass yuav decompose yuav decompose, tso cov pa fumes zoo nkauj (zoo li cyanide!) - Yog li cia kom deb ntawm qhib cov nplaim taws1.
2. Vim li cas qee cov pU foams kov cov cua sov zoo dua
PU ua npuas dej kub ua kom npau taws rau ob yam:kev ua tshuajthiabntxiv.
Kws Kuaj Mob
Nyuaj vs. muag segments: PU Ua npuas ncauj muaj "nyuaj" thiab "mos" aav hauv nws cov qauv. Ntau "cov ntu nyuaj" (los ntawm cov khoom xyaw xws li MDI isocyanate)=zoo dua kub ua hauj 1.
Polyester vs. Polyether: Foams ua nrog polyester polyols kov cov cua sov zoo dua li cov uas siv polyether Polyols1. Xav txog nws zoo li polyester npuag vs. Paj Rwb-Polyester tsis hlawv yooj yim!
Ntxiv Ntxiv Kev Ua Haujlwm
Nplaim taws retardants: Tshuaj zoo li phosphorus lossis melamine tuaj yeem thawb pu npuas dej tiv thaiv siab dua. Piv txwv li, nplaim taws-retardant pu ua npuas ncauj siv hauv cov tuam tsev yuav tiv taus200-250 degreeYog uas tsis muaj rauv nruab nrog.
Fillers & Fibers: Ntxiv cov ntaub ntawv xws li cov roj carbon fibers lossis silica nanoparticles ua zoo li "cov ntaub thaiv tshav kub," qeeb qeeb melting1.
3. Tiag tiag-ntiaj teb piv txwv
Kev rwb thaiv tsev: Rigid PU npaus hauv phab ntsa lossis lub ru tsev tuaj yeem lis~ 150 degreeUa tsaug rau nws cov qauv ntom thiab ntxiv11.
Tsheb: Hloov pauv tsis ua npuas ncauj hauv cov rooj zaum? Tsis yog li-ncaj qha tshav ntuj (uas tuaj yeem tsoo70-80 degreeSab hauv lub tsheb nres) yuav ntaus nws dhau sijhawm155.
Tej Iav: Cov nplaim hluav taws nrog cov nplaim taws nrog cov nplaim hluav taws xob tau siv hauv cov khoom siv hluav taws xob lossis hluav taws xob, muaj sia nyob rau250 degree +1.
4. Cov pob muaj zog
Txawm tias "kub-resistant" pu npuas muaj txwv:
Qeeb kev: Lub tshav kub ntev (txawm nyob hauv qab no melting ntsiab lus) tsis muaj zog nws. Xav hauv siab tawm hauv ncoo ua npuas dej ze rau ntawm lub tshuab hluav taws xob rau lub hlis-nws yuav crumble thaum kawg.
Tshuaj lom zem: Thaum PU ua npuas kub hlawv lossis ntau dua, nws tawm cov roj txaus ntshai. Ib txwm ua qhov tseem ceeb ua hluav taws kev nyab xeeb!
5. Yuav ua li cas txhim kho cov cua kub tiv
Yog tias koj tab tom yuav khoom rau tshav kub-resistant pu ua npuas, nrhiav rau:
Nruj dua hloov tau: Rigid foams feem ntau outperform squishy.
Xyuas cov ntawv lo rau cov quav ntxiv: Nplaim taws retardants (zoo li phosphorus) lossis tej hub microspheres ntxiv tiv thaiv tshav kub.
Density teeb meem: Cov npuas dej ntau dua ua npuas ncauj siv cov cua sov zoo dua li 24.
Txheem PU Ua Npuas Ncauj: Tsis zoo rau high kub-khaws nws hauv qab no120 Qib.
Engineered PU npaus: Nrog ntxiv thiab ntom ntom ntom, nws tuaj yeem coj tau200 degree +rau kev siv tshwj xeeb.
Ib txwm txheeb xyuas cov lus qhia: Tshav kub tiv thaivNtauraws li cov npaus daim ntawv qhia.
Xav tau PU npuas rau qhov chaw sov? Opt rau strooid, additive-packed versions thiab zam kev ncaj ncaj. Nyob txias!