Polyurethane foams yog dav siv nyob rau hauv ntau daim ntawv thov vim lawv zoo heev insulating zog thiab structural zog. Ib yam tseem ceeb ntawm polyurethane ua npuas ncauj yog kaw-cell ua npuas ncauj, paub txog nws rigidity thiab durability. Raws li tus neeg muag khoom ntawm polyurethane catalysts, peb paub txog qhov tseem ceeb ntawm kev nkag siab cov yam ntxwv thiab kev siv ntawm cov xov tooj ntawm tes kaw, nrog rau lub luag haujlwm ntawm cov catalysts tshwj xeeb xws li MXC-C15 thiab MXC-A33 hauv lawv cov khoom.
Txheeb xyuas Closed-Cell Foam
Kaw-cell ua npuas ncauj yog qhov txawv los ntawm nws cov qauv ntom thiab kev cog lus, qhov twg txhua lub cell tag nrho thiab ntim kom ruaj khov ua ke. Cov qauv tshwj xeeb no muab kaw-cell ua npuas ncauj ntau yam sib txawv:
1.Density thiab Nyhav: kaw-cell ua npuas ncauj yog ho denser thiab hnyav dua piv rau qhib-cell ua npuas ncauj. Qhov siab dua qhov no ua rau nws cov khoom zoo tshaj plaws insulating thiab kev ua haujlwm ruaj khov.
2. Dej Resistance: Ib qho tseem ceeb tshaj plaws ntawm cov xov tooj ntawm tes kaw yog nws cov dej tsis zoo. Tsis zoo li qhib-cell ua npuas ncauj, kaw-cell ua npuas ncauj tsis nqus dej, ua rau nws zoo tagnrho rau cov ntawv thov uas tsis muaj dej noo yog qhov tseem ceeb.
3. Thermal rwb thaiv tsev: kaw-cell ua npuas ncauj muab tshwj xeeb thermal rwb thaiv tsev vim nws compact cell qauv. Nws muaj R-tus nqi siab dua, txhais tau tias nws muaj txiaj ntsig zoo ntawm kev tiv thaiv kev hloov pauv kub.
4. Rigidity: Cov npuas dej khov ua rau nws haum rau cov ntawv thov uas xav tau kev txhawb nqa ntxiv. Nws khaws nws cov duab nyob rau hauv siab thiab muab ib tug ruaj khov nto.
Daim ntawv thov ntawm Closed-Cell Foam
Kaw-cell polyurethane ua npuas ncauj yog siv nyob rau hauv ntau yam lag luam vim nws cov khoom muaj txiaj ntsig. Qee cov ntawv thov siv xws li:
- Lub tsev rwb thaiv tsev: Kaw-cell ua npuas ncauj yog siv dav hauv kev tsim kho rau cov phab ntsa, ru tsev, thiab cov hauv paus. Nws R-tus nqi siab pab tswj qhov kub hauv tsev, txo cov nqi hluav taws xob.
- Flotation Devices: Vim nws cov buoyancy thiab dej tsis kam, kaw-cell ua npuas ncauj yog siv nyob rau hauv lub tsim ntawm lub neej vests, buoyancy pab, thiab lwm yam flotation li.
- Ntim: Cov npuas dej khov thiab kev tiv thaiv zoo ua rau nws zoo tagnrho rau ntim cov khoom tawg yooj yim, ua kom lawv ruaj ntseg thaum thauj.
- Automotive: Hauv kev lag luam automotive, kaw-cell ua npuas ncauj yog siv rau soundproofing thiab thermal rwb thaiv tsev hauv tsheb.
Lub luag haujlwm ntawm Catalysts hauv Closed-Cell Foam Production
Catalysts ua lub luag haujlwm tseem ceeb hauv kev tsim cov polyurethane kaw-cell ua npuas ncauj, cuam tshuam cov npuas dej thiab kev ua haujlwm. Cov catalysts tshwj xeeb, xws li MXC-C15 thiab MXC-A33, yog siv los ua kom zoo dua cov ua npuas ncauj cov yam ntxwv:
- MXC-C15: Cov catalyst no feem ntau yog siv rau hauv kev hloov pauv tau yooj yim thiab ib nrab hloov pauv thiab cov ntawv thov ua npuas ncauj nruj. Nws kuj tuaj yeem siv rau hauv polyether block foams thiab CASE.
- MXC-A33: Qhov no catalyst siv rau mos ua npuas ncauj, tawv ua npuas ncauj, semi-nyuaj ua npuas ncauj. Nws tuaj yeem yog lwm cov kuab tshuaj soluble, xws li MEG, DEG, BDO, thiab lwm yam, rau kev siv sib txawv.
Kev nkag siab txog cov khoom thiab kev siv ntawm cov xov tooj ntawm tes kaw polyurethane ua npuas ncauj, nrog rau lub luag haujlwm ntawm cov catalysts tshwj xeeb, yog qhov tseem ceeb rau cov tuam txhab thiab cov neeg siv tib yam. Los ntawm kev xaiv cov catalysts zoo, xws li MXC-C15 thiab MXC-A33, cov neeg tsim khoom tuaj yeem ua kom cov npuas ua tau raws li cov qauv tsim nyog rau ntau yam kev siv, muab cov kev daws teeb meem zoo thiab ua tau zoo.
