Lub hauv paus rau phau ntawv
Methylene Dichhloride (Ch₂cl₂), tseem hu ua Dichhloromethane (DCM), Methylene chloride, yog qhov ua tau zoo ntawm cov neeg sawv cev siv nyob rau hauv kev tsim cov polyurethane (pU) thiab lwm cov npuas polyurethans. Vim nws qhov qis boil point (39.6 degree), thiab lub zog zoo heev hauv kev tsim lub teeb ci, insulating, thiab hloov cov ntaub ntawv ua npuas ncauj.
Cov ntawv sau no tshawb txog kev siv tshuab ntawm methyloride hauv cov tshuab ua npuas ncauj, nws cov ntawv thov muaj kev nyab xeeb, thiab kev saib xyuas kev nyab xeeb, thiab kev saib xyuas kev nyab xeeb, thiab kev saib xyuas kev nyab xeeb thiab kev nyab xeeb thiab kev nyab xeeb.
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Txhawb Nqa & Cov Lus Qhia Kev Nyab Xeeb
Yuav ua li cas methylene dichhloride ua haujlwm raws li lub tshuab
Lub tshuab sawv cev yog cov khoom siv los tsim cov roj npuas hauv cov polymer matrix, tsim lub cev ntawm tes (ua npuas ncauj). Methylene Dichhloride yog dav siv nyob rau hauv polyurethane ua npuas ncauj tsim vim nws cov khoom tshwj xeeb:
1. Volatility & Roj Tsim
Thaum sib xyaw nrog polyol thiab isocyanate (Methylene Dichhloride evaporates sai sai thaum muaj exothermic cov tshuaj tiv thaiv.
Lub vaporization ua rau cov microbubbles, nthuav cov polymer sib xyaw rau hauv ua npuas ncauj.
2. Cov nyhuv muaj zog ntawm polymer matrix
Methylene Dichhloride pab yaj thiab yas cov polymer ua ntej, kom muaj kev sib xyaw ua ke.
Qhov no ua rau muaj cov qauv cell ntau dua nrog cov khoom siv txhim kho cov khoom siv.
3. Endothermic txias nyhuv
Tsis zoo li lub tshuab tiv thaiv lub cev (piv txwv li, Methylene Dichhloride nqus tshav kub thaum tshav ntuj sov, tiv thaiv kev ua kom sov thiab cua sov.
Cov txiaj ntsig zoo ntawm Methylene Dichhloride dua Lwm Cov Khaub Ncaws
| Tshuab tus neeg sawv cev | Zoo | Nplij txwv |
|---|---|---|
| Methylene Dichhloride (Ch₂cl₂) | Low boiling point, excellent solubility, cost-effective | Voc emissions, cov kev txwv txwv kev txwv |
| Hydrofluorocarbons (HFCS) | Tsawg toxicity, tsis - nplaim taws | Kev ua kom thoob ntiaj teb sov sov muaj peev xwm (GWP), kim |
| Hydrocarbons (piv txwv li, pentane) | Ib puag ncig tus phooj ywg, tus nqi qis | Flammable, yuav tsum muaj kev tuav tshwj xeeb |
| Dej (Tshuaj Txhuam Tshuab) | Tsis - ua kom muaj kuab lom, tsis muaj voc emissions | Tsim kom muaj kev sib koom ua ke, tej zaum yuav ua rau cov qauv xov tooj ntawm tes |
Vim li cas thiaj xaiv Methylene Dichhloride?
Tus nqi -} Ua tau zoo - ntau tus nqi pheej yig tshaj li hfcs lossis cov tshuaj fluorinated.
Ua npuas ncauj zoo heev - ua tau zoo, cov qauv sib txawv ntawm tes.
Kev sib xyaw - ua haujlwm zoo nrog ntau yam kev ua qauv.
Kev lag luam ntawm methylene dichhloride - tshuab tshuab npuas
1. Hloov pauv polyurethane ua npuas ncauj (FPF)
Siv nyob rau hauv daim txaj pw, upholstery, thiab lub rooj zaum vim nws lub qhov muag muag thiab ua kom ntev.
Methylene Dichhloride pab kom ua tiav qis - ntom ua npuas dej nrog kev nplij siab zoo dua.
2. Rigid Polyurethane Ua Npuas Ncauj (RPU)
Thov thov hauv rwb thaiv tsev panels, tub yees, thiab siv rau nws cov thermal tiv taus.
Lub tshuab tawg tsim cov kaw lus kaw - ntawm tes qauv, txhim kho kev txuag hluav taws xob.
3. Tsuag ua npuas rwb thaiv tsev
Methylene Dichhloride -} Raws li cov npuas ua kom sai, txhaws cov khoob thiab cov vov tsev, thiab cov raj dej.
4. Ntim Ntim & Cov Ntaub Ntawv Cushioning
Lub teeb yuag, poob siab -}} nqus cov khoom ua npuas pov tseg cov khoom lag luam tsis yooj yim thaum lub sijhawm xa khoom.
Kev Nyab Xeeb & Kev Txiav Txim Siab
1. Kev nyab xeeb ua haujlwm
Kev nqus tau phom sij: ntev kis tau tuaj yeem ua rau kiv taub hau, mob taub hau, thiab pelha ua pa: 25 pm).
Flammability: Thaum tsis muaj nplaim taws heev, methylene dichhloride tuaj yeem sau cov vapor tawg tawg kom tawg ntawm huab cua sib xyaw ntawm cov kub.
Zwm ceeb toom:
Siv cov hoods thiab qhov cua kom zoo.
Hnav cov hnab looj tes, khawm, thiab cov pa ua pa thaum tuav.
2. Ib puag ncig cov cai
Voc emissions: Methylene Dichhloride tau cais ua Volatile organic compound (VOC), raug rau EPA thiab ncav cuag cov cai.
Lwm txoj kev xaiv: Qee qhov kev lag luam tab tom hloov mus rau hfos (hydrofluoroolfinsfins) lossis dej {- tshuab tshuab kom txo cov kev cuam tshuam ib puag ncig.
3. Kev Nyab Xeeb Pov Tseg & Rov Ua Dua Tshiab
Yuav tsum tau muab pov tseg rau cov kev phom sij hauv qab cov cai hauv nroog.
Qee lub chaw rov qab ua haujlwm thiab rov ua dua methyloride los ntawm cov ua npuas dej ntau lawm.
Yav tom ntej cov ncauj lus hauv npuas dej cov neeg sawv cev
Thaum methylene nyob tsis tshua muaj dav, kev lag luam yog hloov mus rau lwm txoj kev nyab xeeb ntau:
HydroCarbon tshuab cov neeg sawv cev (piv txwv li, cyclopentane) - qis GWP tab sis yuav tsum tau tawg - ntaub ntawv pov thawj.
CO₂ - tshuab ua npuas - eco - Tus phooj ywg tab sis yuav tsum tau ua siab.
HFOS (piv txwv li, Solstice®) - xoom ozone depletion muaj peev xwm tab sis tus nqi siab dua.
Dua li ntawm cov ncauj lus no, methylene dichhloride tseem yuav xaiv tau ntau qhov chaw tsim khoom vim nws qhov kev ua tau zoo thiab tus nqi ua haujlwm.
Tiv tauj peb rau peb rau cov methrane dichhloride cov ntsiab lus!
Methylene Dichhloride (ch₂ccl₂) yog qhov ua tau zoo ntawm cov polyurethans thiab lwm cov qauv kev ua npuas ncauj, cov khoom siv hluav taws xob ntawm tes, thiab tus nqi zoo. Thaum ib puag ncig cov kev cai yog tsav tsheb tshiab hauv kev hloov cov chaw ua npuas ncauj, hauv chaw ua npuas ncauj rau kev rwb thaiv tsev, kev lag luam lag luam, thiab ntim khoom lag luam.
Rau kev lag luam nrhiav siab - purity methyloride rau cov ntawv thov ua npuas ncauj, peb lub tuam txhab muab cov nqi sib tw, thiab kev txhawb nqa tau zoo, thiab kev txhawb nqa. Tiv tauj peb rau cov ntsiab lus ntxiv!
