Ua Npuas Ncauj Polyurethane Kaw-Cell yog dab tsi?
Ua npuas polyurethane kaw yog ib hom khoom siv rwb thaiv tsev kub zoo, uas txuag hluav taws xob thiab tiv taus dej noo, yog li nws siv dav hauv ntau yam lag luam. Cov npuas no muaj cov qhov npuas uas ntim nruj nreem uas muaj cov pa roj rwb thaiv tsev (hu ua cov neeg ua kom cua sov) uas pab khaws cua sov hauv cov qhov. Cov qauv kaw ua rau kev ua haujlwm kub zoo dua thiab yog qhov kev xaiv zoo heev rau kev siv rwb thaiv tsev kub txuag hluav taws xob.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov ua npuas ncauj polyurethane kaw yog nws qhov ceev ceev, uas ua rau nws tiv taus dej zoo heev. Qhov ceev no ua rau nws ua ib qho khoom thaiv dej noo zoo, uas yog qhov tseem ceeb rau cov chaw ntub dej xws li attics, crawl Spaces, thiab basements. Vim tias cov ua npuas ncauj kaw ua lub foob airtight, nws txo qhov kev pheej hmoo ntawm kev nkag mus rau hauv dej noo, yog li txo qhov kev loj hlob ntawm pwm, uas txhim kho huab cua hauv tsev thiab pab txhawb rau ib puag ncig noj qab haus huv.
Cov Cheeb Tsam Siv Rau Polyurethane Catalysts Hauv Closed-Cell Foam
Cov tshuaj polyurethane catalysts ua lub luag haujlwm tseem ceeb hauv kev tsim cov ua npuas ncauj kaw los ntawm kev tswj cov tshuaj lom neeg uas tsim cov yam ntxwv tshwj xeeb ntawm cov ua npuas ncauj. Cov tshuaj catalysts xws li MXC-C15 thiab MXC-37 pab ua tiav cov yam ntxwv kev ua tau zoo uas ua rau cov ua npuas ncauj kaw siv tau rau hauv kev tsim kho thiab kev rwb thaiv tsev.
MXC-C15(3,3′-iminobis (N, n-dimethylpropylamine), CAS tus lej 6711-48-4, yog ib qho tshuaj catalyst uas tsis muaj ntxhiab tsw, tsis muaj pa phem uas muaj peev xwm xaiv tau me ntsis rau cov tshuaj urea (isocyanate-water). Cov tshuaj catalyst no txhawb nqa kev kho kom du hauv cov kab ke polyurethane ruaj khov, ua rau nws yog qhov kev xaiv dav rau cov ntawv thov uas xav tau cov khoom kho kom ruaj khov thiab nce qib. Nws cov khoom muaj txiaj ntsig zoo rau kev siv hauv cov ua npuas ncauj kaw rau kev rwb thaiv tsev ntawm lub ru tsev, cov kab ke phab ntsa thiab lwm qhov chaw uas kev ruaj khov thiab kev tiv thaiv dej noo yog qhov tseem ceeb.
MXC-37(2-(2-(dimethylamino)ethoxy)ethanol, CAS No. 1704-62-7), tseem hu ua DMAEE, yog ib qho tshuaj catalyst uas siv tau ntau yam, tsis muaj pa phem thiab muaj kev ua npuas ntau. Vim nws ua haujlwm tau zoo hauv cov qauv uas muaj dej ntau, MXC-37 yog qhov tsim nyog rau kev tsim cov npuas dej uas tsis muaj zog. Cov tshuaj catalyst no txo cov ntxhiab amine uas pom muaj nyob rau hauv cov npuas dej thiab ua kom cov npuas dej muaj zog, ua rau nws muaj txiaj ntsig zoo rau kev siv cov ntxhiab tsw qis. Nws siv tau dav dav xws li cov npuas dej mos, cov elastomers, thiab cov npuas dej khov rau kev ntim khoom, pab kom ua tiav qhov sib xws thiab lub zog hauv cov khoom uas xav tau kev nthuav dav thiab kev ruaj khov.
Cov txiaj ntsig ntawm Closed-Cell Foam thiab Polyurethane Catalysts
Ua npuas polyurethane kaw cell muaj kev tiv taus kub thiab noo noo zoo, thiab cov catalysts xws li MXC-C15 thiab MXC-37 txhawb nqa nws cov khoom tsim tau zoo thiab kev ua haujlwm ruaj khov. Ua ke, cov yam no ua rau cov npuas kaw cell yog qhov kev xaiv hauv cov chaw uas xav tau kev ua haujlwm kub thiab kev ruaj khov mus sij hawm ntev.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-05-2024