Qhov sib txawv ntawm polyurethane MDI thiab TDI tshuab rau elastomer tshuab
Taw qhia:
Polyurethane elastomer tshuab ua lub luag haujlwm tseem ceeb hauv kev lag luam niaj hnub.Txawm li cas los xij, thaum nws los txog rau kev xaiv lub tshuab polyurethane, muaj ob txoj kev xaiv tseem ceeb: MDI (diphenylmethane diisocyanate) system thiab TDI (terephthalate) system.Kab lus no yuav tshawb nrhiav qhov sib txawv ntawm ob lub tshuab no los pab tus nyeem ntawv ua qhov kev xaiv paub ntau ntxiv rau ib daim ntawv thov tshwj xeeb.
I. Elastomer Tshuab rau Polyurethane MDI Systems
Lus Txhais thiab Txheej Txheem: MDI system yog polyurethane elastomer tsim los ntawm diphenylmethane diisocyanate ua cov khoom siv tseem ceeb, feem ntau muaj cov khoom siv xws li polyether polyol thiab polyester polyol.
Nta thiab Cov txiaj ntsig:
Lub zog siab thiab kev puas tsuaj: MDI system elastomers muaj lub cev zoo heev thiab tswj kev ruaj ntseg hauv qhov chaw muaj kev ntxhov siab.
Kev laus zoo heev: elastomers nrog MDI systems muaj kev tiv thaiv zoo rau oxidation thiab UV hluav taws xob thiab lub neej ua haujlwm ntev.
Kev tiv thaiv zoo rau cov roj thiab cov kuab tshuaj: MDI elastomers nyob ruaj khov thaum raug cov tshuaj xws li roj thiab cov kuab tshuaj.
Daim ntawv thov thaj chaw: Elastomers ntawm MDI system tau siv dav hauv kev tsim tsheb, khoom siv ua kis las thiab cov khoom lag luam.
II.Polyurethane TDI system elastomer tshuab
Txhais thiab muaj pes tsawg leeg: TDI system yog polyurethane elastomer tsim nrog terephthalate ua cov khoom siv tseem ceeb, feem ntau muaj cov khoom siv xws li polyether polyol thiab polyester polyol.
Nta thiab qhov zoo:
Zoo elasticity thiab softness: TDI system elastomers muaj siab elasticity thiab softness thiab haum rau cov khoom uas xav tau ib tug siab dua txhais tes.
Kev ua tau zoo ntawm qhov kub thiab txias zoo heev: TDI qhov system elastomers tseem muaj kev ua haujlwm zoo heev hauv qhov kub thiab txias, thiab tsis yooj yim rau deform lossis tawg.
Haum rau cov duab tsis yooj yim: TDI elastomers ua tau zoo hauv kev tsim cov duab sib txawv kom tau raws li kev xav tau ntawm ntau tus qauv.
Daim ntaub ntawv: TDI elastomers yog dav siv nyob rau hauv rooj tog thiab txaj, khau tsim thiab ntim khoom.
III.Kev sib piv ntawm MDI thiab TDI systems
Nyob rau hauv lub tshav pob ntawm polyurethane elastomer tshuab, MDI thiab TDI tshuab muaj cov yam ntxwv sib txawv thiab zoo.Cov lus hauv qab no yuav sib piv lawv qhov sib txawv ntawm cov qauv tshuaj, lub cev lub cev, kev tiv thaiv ib puag ncig thiab kev nyab xeeb, cov nqi tsim khoom thiab thaj chaw siv:
| cov khoom sib piv | Polyurethane MDI system | Polyurethane TDI system |
| chemical qauv | Siv diphenylmethane diisocyanate ua cov khoom siv tseem ceeb | Siv terephthalate ua cov khoom siv tseem ceeb |
| Teb cov yam ntxwv | High degree ntawm crosslinking | tsawg dua kev sib txuas |
| lub cev muaj zog | - Siab zog thiab hnav tsis kam | - zoo elasticity thiab softness |
| - Zoo heev aging kuj | -Txoj kev khoov zoo heev ntawm qhov kub thiab txias | |
| - Cov roj zoo thiab hnyav ua haujlwm | - Haum rau cov khoom nrog cov duab nyuaj | |
| Kev tiv thaiv ib puag ncig thiab kev nyab xeeb | cov ntsiab lus isocyanate tsawg | siab isocyanate cov ntsiab lus |
| Tus nqi tsim khoom | tus nqi siab dua | tus nqi qis dua |
| Daim ntawv thov teb | - Tsheb tsim | - rooj tog thiab txaj |
| - Cov khoom ua si | - Kev tsim khau khau | |
| - Cov khoom lag luam | - Cov khoom ntim |
Raws li tuaj yeem pom los ntawm cov lus saum toj no, elastomers ntawm polyurethane MDI system muaj lub zog siab, kev laus ua haujlwm thiab roj tsis kam, thiab tsim nyog siv rau hauv kev tsim tsheb, khoom siv ua kis las thiab cov khoom lag luam.Ntawm qhov tod tes, polyurethane TDI system elastomers muaj elasticity zoo, yooj yooj yim thiab tsawg-kub dabtsi yog khoov zog, thiab yog haum rau siv nyob rau hauv xws li cov chaw xws li rooj tog thiab txaj, khau tsim thiab ntim khoom.
Nws tseem tsim nyog sau cia tias MDI system yog kim dua los tsim, tab sis muaj kev tiv thaiv ib puag ncig zoo dua thiab kev nyab xeeb.Hauv qhov sib piv, TDI system muaj tus nqi qis dua tab sis cov ntsiab lus isocyanate siab dua thiab yog ib puag ncig tus phooj ywg me ntsis dua li MDI system.Yog li ntawd, thaum xaiv ib tug polyurethane system, manufacturers yuav tsum xav txog cov khoom ua tau zoo, ib puag ncig yuav tsum tau thiab kev siv nyiaj txiag txwv nyob rau hauv thiaj li yuav tsim ib tug tsim nyog ntau lawm cov kev pab cuam kom tau raws li cov kev xav tau ntawm kev siv sib txawv.
IV.Cov kev xaiv thiab cov lus pom zoo
Xaiv cov txheej txheem tsim nyog rau cov ntawv thov sib txawv: Xav txog cov khoom yuav tsum tau ua thiab cov yam ntxwv ntawm daim ntawv thov hauv cheeb tsam, xaiv elastomers nrog MDI lossis TDI systems ua kom muaj kev ua tau zoo tshaj plaws thiab kev ua haujlwm zoo.
Kev txiav txim siab txog kev ua haujlwm ntawm cov khoom lag luam thiab kev siv nyiaj txiag: thaum xaiv qhov system, kev ua haujlwm ntawm cov khoom lag luam, cov kev xav tau ntawm ib puag ncig thiab kev txwv nyiaj txiag raug coj mus rau hauv tus account los tsim cov kev daws teeb meem tsim nyog tshaj plaws.
Xaus:
Polyurethane MDI thiab TDI system elastomers txhua tus muaj lawv tus kheej zoo thiab tsim nyog rau cov khoom xav tau hauv ntau qhov chaw.Kev nkag siab txog qhov sib txawv yuav pab cov tuam txhab tsim cov kev xaiv kom paub meej tias lawv cov khoom ua tau zoo hauv cov ntawv thov tshwj xeeb.
Post lub sij hawm: Aug-01-2023