Txau polyurethane ua npuas ncauj (SPF) yog ib qho ntau yam, lub zog ua haujlwm rwb thaiv tsev uas tau txais kev siv thoob plaws, kev lag luam, thiab kev lag luam. SPF yog hom kev ua npuas dej nruj, tsim los ntawm kev txau qhov sib xyaw ntawm isocyanates thiab polyols uas kev nthuav dav thiab nthuav dav thaum koj hu rau kev ua npuas ncauj. SPF muab cov hluav taws xob zoo dua, noo kev tiv thaiv, thiab kav ntev rau cov rwb thaiv tsev hauv tsev, ru tsev, kav dej, thiab lwm yam.
Dab tsi yog txau polyurethane ua npuas?
Txau polyurethane ua npuas ncauj (SPF) yog ob lub luag haujlwm ua los ntawm isocyanate thiab polyol. Thaum ua ke, cov cheebtsam no yauv ua npuas dej uas tsim ua npuas ncauj uas nthuav dav nrawm kom nkag qhov khoob, cov kab nrib pleb, thiab kab noj hniav. Lub sij hawm ua npuas ncauj muaj lub peev xwm zoo tshaj plaws vim nws cov thermal tsawg thermal, uas yuav pab txo kev siv zog los ntawm kev tiv thaiv kev hloov cua sov. Tsis tas li ntawd, SPF ua cov kev sib tw, tiv thaiv noo noo los ntawm kev pom cov phab ntsa thiab qab, txo txoj kev pheej hmoo ntawm cov kev pheej hmoo ntawm cov pwm loj zuj zus.
SPF yog cov neeg tuaj yeem tsim tau thiab tuaj yeem txau mus rau qhov tsis zoo rau ib qho chaw, suav nrog phab ntsa, vov tsev, thiab lub hauv paus. Nws tseem muaj lub npe rau nws tus nqi siab (thermal kuj:, ua rau nws xaiv zoo dua rau lub zog hluav taws xob. SPF yog qhov zoo tagnrho rau kev tsim kho tshiab thiab cov ntawv thov rov qab.
Lub luag haujlwm ntawm Polyurethane catalysts hauv SPF
Qhov tsim ntawm SPF yog cov txheej txheem nyuaj uas yuav tsum tau tswj kom meej dhau cov tshuaj lom neeg ntawm isocyanate thiab polyol Cheebtsam. Polyurethane catalysts yog qhov tseem ceeb hauv cov txheej txheem no, nrawm qhov tshuaj tiv thaiv thiab cov tsiaj txhu sawv thiab kho cov yam ntxwv. Cov catalysts no ua si lub luag haujlwm tseem ceeb hauv kev txiav txim siab ua npuas ncauj cov khoom siv kawg, xws li ntom ntom, lub zog, thiab rwb thaiv tsev.
Polyurethane catalysts ua haujlwm los ntawm kev nrawm ntawm cov tshuaj tiv thaiv ntawm Isocyanates thiab polyols, kom ua kom lub npaus sawv thiab kho kom ceev. Yog tias cov tshuaj tiv thaiv tshwm sim dhau lawm, cov npuas dej yuav sawv tsis ncaj lossis tsim qhov tsis xws luag. Hloov siab, yog tias cov tshuaj tiv thaiv qeeb qeeb, cov ua npuas dej yuav tsis kho kom raug, ua kom nws lub zog thiab cov khoom insulating. Txoj cai catalyst ua kom muaj kev tiv thaiv du, tswj tau cov tshuaj tiv thaiv uas ua rau muaj kev npaus zoo.
Muaj ob hom ntsiab ntawm polyurethane catalysts siv hauv SPF:Amine-based catalyststhiabtin-based catalystsCov. Amine-based catalysts, uas yog ib txwm siv nyob rau hauv niaj hnub spf formulation, muab ntau qhov kev cuam tshuam, suav nrog cov tshuaj tsw qab thiab qis dua counterparts.
Tus tseem ceeb Polyurethane catalysts hauv SPF formulations
Ob peb polyurethane catalysts yog feem ntau siv hauv SPF formulations kom ua tiav kev ua haujlwm zoo:
Mxc-t: Tus emission-dawb, qis-ntxhiab amine amine catalyst, migh nce profile, ua rau nws zoo tshaj plaws rau cov tshuaj tsw nti thiab kev ua tau zoo me ntsis.
MXC -37: Ib qho kev tsim nyog rau cov tshuab nrog cov ntsiab lus dej siab, MXC {0}} txhawb nqa cov roj ua npuas zoo zoo tshaj plaws ua npuas ncauj.
MXC-TMA: Cov catalyst no txhawb nqa lub taub hau ntawm polyisocyanurate, pab kom ua tiav thiab kho cov ntaub ntawv, uas yog qhov tseem ceeb rau SPF siv hauv vov tsev thiab rwb thaiv tsev.
MXC-B20: MXC-B20 yog ib co-catalyst uas ua haujlwm nrog lwm cov catalysts kom ua npuas kom nrawm, ua kom tiav qhov ua tiav, ruaj khov. Nws yog qhov tshwj xeeb tshaj plaws hauv cov tshuab ua npuas dej siab.
Cov catalysts muab kev tswj hwm cov ua npuas ncauj tseem ceeb, kom cov ntaub ntawv spf tsis zoo, nrog qhov kev ua tau zoo, thiab kev ua haujlwm rwb thaiv tsev. Ib qho ntxiv, kev siv qis-tso tawm, qis-tsw-odor catalysts zoo li MXC-T yog qhov tseem ceeb tshaj li ib puag ncig cov ntaub ntawv ntawm lub tsev lub nce.
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Txau Polyurethane Ua Npuas Ncauj (SPF) yog cov ntaub ntawv rwb rwb rwb rwb, thiab tswj kom noo, thiab kav ntev. Kev siv cov polyurethane tshwj xeeb catalysts yog qhov tseem ceeb hauv kev ua npuas ncauj yog qhov ua kom muaj kev cia siab, nrog kev kho kom zoo, thiab cov khoom rwb thaiv tsev. Nrog rau kev loj hlob ntxiv ntawm lub zog-txuag, ib puag ncig cov ntaub ntawv hauv tsev, SPF thiab nws cov catalysials txuas ntxiv yog qhov tseem ceeb ntawm kev tsim kho thiab rwb thaiv tsev.
