1. Lub luag hauj lwm ntawm Cyclopentane nyob rau hauv tub yees - Tshuab tshuab, tsis yog tub yees
Lub luag haujlwm ntawm cyclopentane hauv tub yees yog ua "tus neeg ua haujlwm tshuab," lub luag haujlwm tsim cov npuas hauv txheej txheej rwb thaiv tsev, tsis yog cov tub yees. Qhov no yog ib lub tswv yim uas yuav tsum tau qhia meej ua ntej.
Nyob rau hauv lub tub yees ntau lawm, cyclopentane yog ntxiv rau polyurethane raw cov ntaub ntawv thiab ua ib tug nruj polyurethane npuas rwb thaiv tsev txheej nyob rau hauv lub txee kab noj hniav los ntawm lub cev foaming. Cov ntaub ntawv raug cai los ntawm Dymatic Chemicals tau hais meej meej tias cyclopentane, uas yog hom tshiab ntawm cov tshuab tshuab rau cov khoom siv polyurethane ua npuas ncauj, yog siv los hloov cov chlorofluorocarbons (CFCs) uas ua rau cov huab cua ozone txheej, thiab tam sim no tau siv dav hauv kev tsim CFC- cov tub yees thiab lub freezers.
Vim li cas thiaj xav tau lub tshuab tshuab? Lub thermal rwb thaiv tsev kev ua tau zoo ntawm polyurethane ua npuas ncauj los ntawm cov npuas hauv cov npuas dej - thermal conductivity ntawm cov pa hauv cov npuas yog qis dua li cov khoom yas. Lub luag hauj lwm ntawm cyclopentane yog los tsim cov npuas no thaum lub sij hawm polyurethane solidification: nws tsis koom nrog cov tshuaj tiv thaiv, tab sis tsuas yog "hitches caij" siv cov tshuaj tiv thaiv tshav kub kom volatilize, tawm hauv ib tug uniform kaw - cell qauv nyob rau hauv lub polymer matrix.
2. Foaming Mechanism - Yuav ua li cas Cyclopentane "Tsim npuas" hauv Polyurethane
Raws li lub tshuab tshuab lub cev, cyclopentane siv cov tshuaj tiv thaiv kub ntawm polyurethane kom volatilize thiab vaporize, tsim npuas nuclei hauv cov kua sib tov. Tom qab cov npuas loj tuaj, lawv tawm hauv ib qho kev kaw -cov qauv ntawm tes tom qab ua npuas dej khov.
Cov txheej txheem no tuaj yeem muab faib ua peb theem:
Kauj Ruam 1: Kev sib tov thiab kev sib cais
Cyclopentane yog ua ntej- sib xyaw nrog polyols, catalysts, foam stabilizers, thiab lwm yam, los ua ib qho kev sib xyaw polyol. Nanjing Hongbaoli Lub Tuam Txhab siv cov tshuaj tsw qab amine pib ua cov khoom tseem ceeb los ua ke ib hom tshiab ntawm polyether haum rau kev siv cyclopentane ua tus neeg sawv cev tshuab, ua kom muaj kev sib raug zoo ntawm cyclopentane thiab polyether system.
Theem 2: Npuas Nucleation thiab Kev Loj Hlob
Thaum cov polyol sib xyaw nrog isocyanate, cov tshuaj tiv thaiv polymerization tso tawm cua sov. Cyclopentane vaporizes thaum cua sov, tsim suav tsis txheeb me npuas nuclei hauv cov kua sib tov. Raws li cov tshuaj tiv thaiv tshwm sim, cov npuas tsis tu ncua loj hlob, tsav cov npuas ntim kom nthuav dav.
Theem 3: Ua npuas ncauj Solidification
Tom qab cov tshuaj tiv thaiv polyurethane crosslinking tiav thiab ua npuas dej khov, cov roj cyclopentane tau kaw nyob rau hauv lub hlwb, tsim ib qho kaw {{0} cell qauv. Cov hlwb kaw no yog tus yuam sij rau thermal rwb thaiv tsev - thermal conductivity ntawm cov roj cyclopentane hauv cov hlwb (kwv yees li 0.012 W/m·K) qis dua li ntawm huab cua (0.026 W/m·K) thiab cov khoom polyurethane.
Kev tshawb fawb Italian hauv xyoo 1994 twb tau lees paub tias polyurethane ua npuas ncauj rwb thaiv tsev cov ntaub ntawv uas tsim los nrog optimized cyclopentane thev naus laus zis tau sib piv hauv cov qauv thiab kev ua haujlwm thermal rau yav dhau los CFC- tshuab tshuab.
3. Kev koom tes tshwj xeeb ntawm Cyclopentane rau lub tub yees Thermal rwb thaiv tsev Performance
Cyclopentane foaming system tuaj yeem txo cov thermal conductivity ntawm lub tub yees ua npuas ncauj rau 0.0180-0.0220 W / (m·K), uas yog qhov tseem ceeb hauv kev ua tiav cov tub yees thermal rwb thaiv tsev.
3.1 Kev sib raug zoo ntawm Blowing Agent Hom thiab Foam Performance
| Tshuab tshuab hom | ODP Tus nqi | Cov yam ntxwv tseem ceeb | Daim ntawv thov xwm txheej nyob rau hauv Tuam Tshoj lub tub yees kev lag luam |
|---|---|---|---|
| Cyclopentane | 0 | Ib puag ncig tus phooj ywg, zoo thermal rwb thaiv tsev kev ua tau zoo, yuav tsum tau tawg - pov thawj retrofitting | Mainstream daws; kwv yees li 86% ntawm cov tub yees siv nws hauv 2009 |
| n-Pentane/Isopentane | 0 | Tus nqi qis dua, tab sis me ntsis qis thermal rwb thaiv tsev kev ua tau zoo | Siv nyob rau hauv kev sib tov los txhim kho flowability |
| HFC-245 fa | 0 | Thermal conductivity superior rau cyclopentane, tsawg dua cov cuab yeej retrofitting peev | Siv ua ke nrog cyclopentane, txwv los ntawm Kigali Amendment |
| HFC-365 mfc | 0 | Cov khoom siv ntau dua | Tsis tshua muaj siv ib leeg |
| CFC-11 | 1 | Phase tawm | twb txwv lawm |
3.2 Peb theem tseem ceeb ntawm kev hloov pauv ntawm thev naus laus zis
Theem 1: Pure Cyclopentane System (1990s-2000s)
Xyoo 1993, cyclopentane foaming tshuab tau qhia rau Suav teb; loj- nplai daim ntawv thov nyob rau hauv Tuam Tshoj lub tub yees kev lag luam pib nyob rau hauv 1996. Lub ntshiab cyclopentane system yog thawj xaiv rau hloov CFC-11 nyob rau hauv lub tub yees kev lag luam. Nws cov yam ntxwv ib puag ncig ntawm ODP=0 thiab GWP qis heev tso cai rau nws kis tau sai. Los ntawm 2009, kwv yees li 86% ntawm cov tub yees ua hauv Suav teb siv cyclopentane rau foaming.
Theem 2: Composite Foaming System (Late 2000s-2010s)
Cov ntshiab cyclopentane system muaj teeb meem ntawm cov thermal conductivity thiab siab zog noj. Hisense Kelon siv cyclopentane ua ke nrog HFC-245fa, "zoo daws cov teeb meem ntawm kev ua haujlwm tsis zoo thermal rwb thaiv tsev thiab kev siv hluav taws xob siab ntawm cov tub yees uas twb muaj lawm cyclopentane foaming system." Qhov tsawg-cov tshuab ua npuas ncauj sib koom ua ke tsim los ntawm Hisense thiab BASF, raws li lawv tus kheej- tau tsim 245fa / c-pentane cov tshuab ua npuas dej, ua tiav kev ua tiav, txo kev siv hluav taws xob rau ib lub tub yees los ntawm 3-5% thiab txuag kwv yees li 8% ntawm foaming raw khoom noj.
Theem 3: Mixed Foaming thiab Low-Boiling Point Technology (2010s txog tam sim no)
Tam sim no, cov chaw tsim khoom tub yees hauv tsev feem ntau siv HFC-245fa + cyclopentane blend foaming system. Hisense tau tsim ib qho qis -boiling point foaming technology tov uas muaj cyclopentane + HFO/HFC-245fa + n-butane. Midea tau tsim cov ntsiab lus qis-boiling txheej txheem ntawm cyclopentane + isopentane + HFC-152a + HFO / HFC-245fa.
Hu Feng ntawm Hisense Refrigerators piav qhia: "Lub cyclopentane + HFOs sib xyaw ua npuas dej txuag 2% lub zog rau tag nrho cov khoom siv piv rau cyclopentane + HFC-245fa foaming system." Kev tshawb fawb qhia tau hais tias ntxiv cov foaming tshwj xeeb ntxiv rau cyclopentane foaming system tuaj yeem txo qis kev siv zog ntxiv los ntawm 6%.
4. Kev txuag hluav taws xob thiab txo kev siv hluav taws xob los ntawm Cyclopentane
Siv cov cuab yeej ua kom zoo cyclopentane foaming tuaj yeem txo lub zog noj ib lub tub yees los ntawm 3-5% thiab txuag kwv yees li 8% ntawm cov khoom siv raw. Tag nrho kev lag luam tuaj yeem txuag tau kaum txhiab tons ntawm polyurethane raw cov ntaub ntawv txhua xyoo.
Raws li qis-cov ntaub ntawv ceev foaming tshuab ua ke tso tawm los ntawm Hisense thiab BASF xyoo 2012:
| Cov txiaj ntsig Indicator | Cov ntaub ntawv tshwj xeeb |
|---|---|
| Kev siv hluav taws xob txo qis hauv ib chav | 3-5% |
| Raw khoom txuag | Kwv yees li 8% |
| Kev tsim tawm txhua xyoo hauv tebchaws (raws li 75 lab units) | Kwv yees li 75 lab units |
| Kev txuag nyiaj txiag txhua xyoo | Kwv yees li 35,000 tons |
| Kev txuag nyiaj txiag txhua xyoo | Tshaj 500 lab RMB |
Cov thev naus laus zis no tsis yog tsuas yog tsim cov nqi hluav taws xob qis rau cov neeg siv khoom xwb tab sis kuj tseem tsim cov txiaj ntsig tseem ceeb hauv zej zog los ntawm kev txo qis kev noj thiab txo qis emissions. Rau cov neeg siv khoom, cov ntaub ntawv rwb thaiv tsev zoo heev tsis tsuas yog txo qis kev siv hluav taws xob xwb tab sis kuj txo qis qhov tuab ntawm cov txheej rwb thaiv tsev, tsim kom muaj qhov chaw cia loj rau cov tub yees ntawm tib lub ntim sab nraud.
5. Synergistic Effect of Cyclopentane thiab Vacuum Insulation Panels (VIPs)
The combination of cyclopentane-blown polyurethane foam and vacuum insulation panels achieves a "1+1>2" thermal rwb thaiv tsev nyhuv, uas yog ib qho kev sib txawv hauv siab -kawg tub yees.
Hitachi's patented thev naus laus zis nthuav tawm cov kev daws teeb meem sib txuas ua ke cyclopentane foaming nrog lub tshuab nqus tsev rwb thaiv tsev (VIPs):
VIP cheeb tsam:Lub tshuab nqus tsev rwb thaiv tsev yog txuas nrog rau sab hauv ntawm lub tub yees sab nrauv, npog thaj chaw uas muaj qhov xav tau siab tshaj plaws ntawm rwb thaiv tsev.
Cyclopentane ua npuas ncauj filling:Qhov seem seem yog ntim nrog cyclopentane- tshuab polyurethane ua npuas ncauj
Synergistic nyhuv:Cyclopentane ua npuas ncauj muab tag nrho cov qauv kev txhawb nqa thiab cov rwb thaiv tsev zoo ib yam, thaum VIP muab cov rwb thaiv tsev huab cua hauv cheeb tsam
Lub hom phiaj ntsuas kev ua tau zoo tau teeb tsa los ntawm patent no yog:
| Performance Indicator | Lub hom phiaj tus nqi |
|---|---|
| Zuag qhia tag nrho cov tawv nqaij ceev (ntawm ntau dua lossis sib npaug li 500mm los ntawm qhov chaw txhaj tshuaj) | 34-37 kg/m³ |
| Compressive zog | Ntau dua lossis sib npaug li 0.1 MPa |
| Flexural zog | Ntau dua lossis sib npaug li 0.4 MPa |
| Filling ratio | 30-35 g/L |
Lub txee tiav ntawm qhov kev daws teeb meem no muaj cov yam ntxwv ntawm lub zog siab, ruaj khov ntev - lub sijhawm cua sov, thiab txuag hluav taws xob zoo heev.
6. Ib puag ncig tus nqi thiab kev lag luam Status ntawm Cyclopentane
Los ntawm kev tsim txiaj ntawm nws cov yam ntxwv ib puag ncig ntawm ODP=0 thiab GWP qis heev, cyclopentane tau dhau los ua qhov kev xaiv tseem ceeb hauv lub tub yees tshuab tshuab tshuab.
Raws li xyoo 2010, cyclopentane tau tuav txoj haujlwm tseem ceeb hauv lub tub yees tshuab tshuab ua lag luam:
Hauv xyoo 2009, qhov feem pua ntawm cov tub yees ua hauv Suav teb siv cyclopentane foaming yog siab li 86%
Tebchaws Asmeskas kev lag luam, uas yav dhau los tsis lees txais cyclopentane tshuab tshuab, kuj tau tshem tawm cov kev txwv
GWP tus nqi ntawm cyclopentane tsawg heev, ua tau raws li qhov yuav tsum tau ua ntawm "dual carbon" cov hom phiaj
Tom qab Tuam Tshoj tau cog lus rau "ua tiav cov pa roj carbon monoxide los ntawm 2030 thiab carbon neutrality los ntawm 2060," HFC cov khoom xws li HFC-245fa lub ntsej muag raug txo qis, thiab qhov zoo ntawm ib puag ncig ntawm cyclopentane yuav dhau los ua qhov tseem ceeb. Tawm tsam keeb kwm yav dhau los ntawm kev ua raws li EU F- kev tswj hwm roj, cyclopentane, ua tus neeg sawv cev tsis muaj fluorine nrog ODP=0, yog ib qho kev xaiv nruj rau cov tub yees xa tawm mus rau EU.
7. Kev txiav txim siab txog kev nyab xeeb hauv kev siv Cyclopentane
Cyclopentane yog cov kua hluav taws kub heev (flash point -42 degree), xav tau cov cuab yeej tawg thiab cov kev cai nruj nruj thaum siv.
Raws li physicochemical parameters ntawm cyclopentane:
| Parameter | Tus nqi |
|---|---|
| Flash Point | -42 degree |
| Explosion txwv | 1.4-8.7% Vol |
| Autoignition Kub | 361 degree |
| Fire Hazard Classification | Chav B |
Muaj ob qhov kev sib txuas tseem ceeb hauv kev siv cyclopentane: lub Hoobkas ua haujlwm ua npuas dej thiab lub tank cia cyclopentane. Xyoo 2007, Tuam Tshoj Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob tau teeb tsa cov qauv ntawm "QB / T2911-2007 Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb rau Kev Tsim Khoom Siv Hauv Tsev thiab Cov Khoom Siv Hluav Taws Xob Zoo sib xws siv Cyclopentane Blowing Agent."
Cov lag luam me thiab nruab nrab- cov lag luam loj feem ntau tau txais kev daws teeb meem ntawm kev tsim lub chaw faib khoom cyclopentane. "Kev tsim lub chaw xa khoom cyclopentane nyob rau hauv lub tub yees loj thiab lub tub yees qhov chaw tsim khoom hauv lub tub yees tshem tawm qhov yuav tsum tau tso cyclopentane cia tso tsheb hlau luam hauv lub Hoobkas, ua kom cov khoom siv cyclopentane rau cov chaw tsim khoom me me thaum txav lub tank cyclopentane txaus ntshai tshaj plaws ntawm kev lag luam, ua kom muaj kev tiv thaiv kev nyab xeeb."
8. Nanjing ZL zog Co., Ltd
Nanjing ZL Energy Co., Ltd. tsom mus rau kev tshawb fawb, kev tsim kho, thiab tsim cov tshuaj hydrocarbon tshuab, muab cov khoom zoo - zoo cyclopentane raw khoom rau cov tub yees manufacturers.
Raws li tus kws tshaj lij ntawm cov khoom siv hydrocarbon, Nanjing ZL Energy Co., Ltd. muaj cov txiaj ntsig hauv qab no hauv thaj chaw cyclopentane:
| Qhov Zoo Tshaj Plaws | Cov ntsiab lus tshwj xeeb |
|---|---|
| High Product Purity | Cyclopentane purity Ntau dua los yog sib npaug rau 99.5%, cov ntaub ntawv kuaj tau traceable |
| Original Manufacturer | Relies ntawm kev sib koom ua ke C5 tus nqi saw, batch stability guaranteed |
| Kev Tsim Nyog Ua Raws Cai | Ua raws li GB / T 18825-2024 tus qauv; ua tiav cov kev tsim nyog tshuaj lom neeg |
| Kev ntim khoom yooj yim | Ntau yam kev xaiv ntim nrog rau lub tog raj kheej, ISO tso tsheb hlau luam, thiab cov tsheb thauj khoom; adapts rau qhov sib txawv scale xav tau |
| Kev sab laj | Muab cov lus pom zoo sib xyaw pentane formulation thiab kev txhawb nqa txheej txheem foaming |
Xaus
Lub luag haujlwm tseem ceeb ntawm cyclopentane nyob rau hauv tub yees yog ua tus neeg sawv cev rau lub zog polyurethane ua npuas ncauj, tsim ib qho kev kaw - cell qauv nyob rau hauv lub rwb thaiv tsev txheej los ntawm lub cev foaming, endowing lub tub yees nrog zoo heev thermal rwb thaiv tsev kev ua tau zoo.
Los ntawm nws cov kev taw qhia rau Tuam Tshoj xyoo 1993 txog rau tam sim no, cyclopentane foaming tshuab tau dhau los ua peb theem kev txhim kho: ntshiab cyclopentane system → sib xyaw foaming system → mixed foaming thiab low -boiling point technology. Cov thev naus laus zis tshaj plaws tam sim no tuaj yeem txo qis kev siv hluav taws xob hauv ib lub tub yees los ntawm 3-5%, txuag kwv yees li 8% ntawm cov khoom siv raw, thiab txo cov npuas thermal conductivity kom qis dua 18.0 mW / (m·K). Cyclopentane tab tom hloov zuj zus los ntawm qhov yooj yim "tus tsim npuas" rau hauv lub tshuab thev naus laus zis tseem ceeb rau lub tub yees txuag hluav taws xob thiab txo kev noj.
