1. Lub luag haujlwm tseem ceeb ntawm cov tshuab tshuab tshuab hauv polyurethane ua npuas ncauj
Cov tshuab tshuab yog cov khoom tseem ceeb uas txiav txim siab qhov ntom ntom, thermal conductivity, thiab cov khoom siv ntawm polyurethane ua npuas ncauj. Cyclopentane, raws li tus neeg sawv cev tshuab lub cev, tsim npuas hauv polymer matrix los ntawm volatilization.
Polyurethane ua npuas ncauj yog cov khoom ntxeem tau muaj xws li polyurethane matrix tsim los ntawm cov tshuaj tiv thaiv ntawm polyols thiab isocyanates, ua ke nrog roj npuas. Lub luag haujlwm ntawm tus neeg sawv cev tshuab yog tsim cov npuas no - thaum lub sij hawm cov txheej txheem tshuaj tiv thaiv, tus neeg sawv cev tshuab vaporizes raws li cua sov, nthuav nyob rau hauv ntim, thiab tsim countless zoo npuas nyob rau hauv cov kua sib tov, thaum kawg tawm hauv ib tug uniform kaw - cell qauv tom qab ua npuas ncauj solidifies.
Cyclopentane, raws li lub tshuab tshuab lub cev, sib txawv ntawm cov tshuaj tshuab tshuab (xws li dej): cov tshuaj tshuab tshuab tsim cov roj los ntawm cov tshuaj tiv thaiv, thaum lub cev tshuab tshuab ua npuas los ntawm kev hloov hauv lub cev (kua → roj). Cyclopentane tsis koom nrog cov tshuaj tiv thaiv polyurethane polymerization; nws tsuas yog "hitches caij" siv cov tshuaj tiv thaiv tshav kub kom volatilize. Cov yam ntxwv no ua rau cov txheej txheem tswj ntawm cyclopentane foaming systems hloov tau yooj yim dua thiab muab kev hloov pauv zoo dua rau kev hloov kho.
2. Kev siv Cyclopentane hauv Rigid Polyurethane Ua Npuas Ncauj
Cyclopentane yog lub tshuab tshuab tseem ceeb rau kev tsim cov tub yees thiab lub freezer rwb thaiv tsev txheej, ua kom nruj polyurethane ua npuas ncauj kom ua tiav kev sib xyaw ua ke ntawm qhov ntom ntom, siab zog, thiab thermal conductivity tsawg.
Rigid polyurethane ua npuas ncauj tau lees paub tias yog ib qho zoo tshaj plaws thermal rwb thaiv tsev cov ntaub ntawv. Cyclopentane plays lub luag hauj lwm ntawm "npuas txiag" nyob rau hauv nws. Raws li patent thev naus laus zis nthuav tawm ntawm Hisense Ronshen Lub Tub Yees Lub Tuam Txhab, siv cov txheej txheem foaming nrog cyclopentane ua cov khoom tseem ceeb, cov npuas dej tuaj yeem ua tiav cov thermal conductivity qis dua 0.01800 W / (m·K) thaum tuav lub cev zoo.
2.1 Optimal Formulation Parameters
Raws li cov ntaub ntawv tshawb fawb tshiab tshaj tawm hauvTuam Tshoj Pulp & NtawvHauv xyoo 2024, qhov zoo tshaj plaws formulation parameters rau cyclopentane - tshuab polyurethane ua npuas ncauj yog raws li nram no:
| Cheebtsam | Optimal Dosage/Ratio | Kev piav qhia |
|---|---|---|
| Cyclopentane | 0.71% (kwv yees li 10-16 feem ntawm 100 qhov chaw polyol) | Cov khoom tseem ceeb ntawm tshuab tshuab |
| Polyurethane ua npuas ncauj Stabilizer | 4.71% | Stabilizes ua npuas ncauj qauv |
| Tin-raws li Catalyst | 0.02 g | Txhawb gelation cov tshuaj tiv thaiv |
| Amine -raws li Catalyst | 0.03 g | Txhawb cov tshuaj tiv thaiv foaming |
| Polyol: Isocyanate | 10:12 | Polyol rau isocyanate ratio |
2.2 Cov nyhuv ntawm Cyclopentane Dosage ntawm Ua Npuas Ncauj Kev Ua Haujlwm
Kev tshawb fawb qhia tau hais tias tus nqi ntawm cyclopentane ntxiv muaj feem cuam tshuam rau kev ua npuas ncauj:
| Cyclopentane Dosage | Qhov ntom ntom (kg / m³) | Compressive zog (kPa) | Thermal conductivity (W / (m·K) |
|---|---|---|---|
| 0% | 68 | 243 | 0.0335 |
| 0.35% | 51 | 268 | 0.0337 |
| 0.71% (zoo) | 52 | 320 | 0.0328 |
| 1.06% | 58 | 312 | 0.0335 |
| 1.40% | 54 | 244 | 0.0328 |
| 1.75% | 54 | 239 | 0.0343 |
Kev txhais cov ntaub ntawv:Thaum qhov sib ntxiv ntawm cyclopentane yog 0.71%, ua npuas dej ua tiav nws lub zog siab tshaj plaws ntawm 320 kPa, nws cov thermal conductivity qis tshaj ntawm 0.0328 W / (m·K), thiab qhov pom tseeb ntawm 52 kg / m³. Tsawg dhau qhov sib ntxiv ua rau muaj qhov ceev dua (68 kg / m³), thaum siab dhau los txo qis zog (239 kPa).
2.3 Mechanism ntawm Cov Khoom Siv Hluav Taws Xob cuam tshuam rau thermal conductivity
Lub luag haujlwm ntawm tus neeg sawv cev tshuab hauv npuas thermal conductivity tuaj yeem piav qhia los ntawm cov qauv hauv qab no:
Ua npuas ncauj thermal conductivity λF=λG + λS + λR + λC
| Cheebtsam | Lub ntsiab lus | Muaj feem cuam tshuam |
|---|---|---|
| λG | Gas thermal conductivity hauv hlwb | Ncaj qha cuam tshuam los ntawm cyclopentane ntxiv tus nqi |
| λS | Khoom polymer thermal conductivity | Kev txiav txim los ntawm polyurethane matrix |
| λR | Radiative conductivity | Cov xov tooj me me txhais tau tias qis dua hluav taws xob |
| λC | Convective thermal conductivity | Negligible thaum cell loj<2 mm |
Lub thermal conductivity ntawm cyclopentane (kwv yees li 0.012 W / (m·K)) qis dua li ntawm huab cua (0.026 W / (m·K)). Yog li ntawd, siv cyclopentane es tsis txhob ntawm huab cua raws li lub cell gas zoo txo lub zuag qhia tag nrho thermal conductivity ntawm lub npuas.
3. Kev siv Cyclopentane hauv Flexible Polyurethane Ua Npuas Ncauj
Cyclopentane tseem tuaj yeem siv rau hauv kev tsim cov polyurethane ua npuas ncauj, feem ntau siv hauv cov ntaub ntawv cushioning, rooj tog ua npuas ncauj, thiab lwm yam.
Txawm hais tias cyclopentane tau dav siv hauv cov npuas tsis nruj, nws kuj tseem ua lub luag haujlwm tseem ceeb hauv kev hloov pauv hloov pauv ua npuas ncauj tshuab. Txhawm rau daws qhov teeb meem ntawm ib puag ncig hauv kev tsim cov khoom siv tau yooj yim polyurethane ua npuas ncauj, cov kws tshawb fawb siv cyclopentane, uas muaj ODP tus nqi ntawm xoom, ua lub tshuab tshuab lub cev los hloov chlorofluorocarbons (CFCs) uas ua rau cov txheej txheej ozone hnyav heev.
3.1 Txheej Txheem Ntsiab Lus
Siv cov hloov pauv polyether polyols thiab toluene diisocyanate ua cov reactants tseem ceeb, hloov tau yooj yim polyurethane ua npuas ncauj yog tsim los ntawm ib qho - txoj kev txhaj tshuaj. Raws li kev sib xyaw ua ke ntawm 1500 r / min, cyclopentane thiab hloov kho polyether polyol yog sib xyaw hauv qhov sib piv loj ntawm 32: 100. Thaum lub sij hawm sim ntau lawm, nitrogen yog los daws cov teeb meem flammability thiab explosiveness ntawm cyclopentane.
3.2 Khoom Zoo
Txheeb xyuas los ntawm qhov me me - nplai thiab kev sim, cov txheej txheem no yuav tsum tau hloov kho cov cuab yeej tsawg thiab muaj kev nyab xeeb rau kev tsim khoom. Raws li lub teb chaws tus qauv GB10802-1989, cov khoom ua tau raws li cov khoom lag luam qib thawj thiab tau siv dav hauv cov ntaub ntawv cushioning.
4. Cyclopentane thiab HFC-245fa Mixed Foaming System
Siv cyclopentane ua ke nrog HFC-245fa tuaj yeem txhim kho cov qauv ntawm tes thiab txo cov thermal conductivity. Qhov no tam sim no yog cov kev daws teeb meem tseem ceeb rau kev siv high-end xws li cov thawv txias.
Tam sim no, ib puag ncig tus phooj ywg tshuab tshuab tau pom zoo rau cov txheej txheem polyurethane ua npuas ncauj hauv cov thawv txias yog cyclopentane thiab HFC-245fa. Kev sib xyaw ntawm ob ua rau muaj kev sib koom ua ke - cyclopentane muab kev ua haujlwm zoo nucleation, thaum HFC-245fa muaj qis dua roj-theem thermal conductivity.
4.1 Cov txheej txheem tswj kev sib xyaw ua ke
Cov yam ntxwv ntawm physicochemical ntawm cyclopentane (flammable, explosive, heev volatile) tso siab dua xav tau ntawm cov kab ntau lawm tswj system. PID parameter tus kheej -tuning txoj kev raws li Siemens PLC tuaj yeem ua tiav cov inverter meej-tsav tas li khiav tswj ntawm peb cov ntaub ntawv raw - cyclopentane, polyether polyol, thiab HFC-245fa - kom ruaj khov ntawm qhov sib xyaw.
4.2 Daim ntawv thov cuam tshuam
Los ntawm kev ntxiv 1% -3% ntawm 1-chloro-3,3,3-trifluoropropene (HFO-1233zd) los ntawm tag nrho cov khoom hnyav hnyav rau polyurethane foaming formulation thiab siv nws ua ke nrog cyclopentane, cov qauv ntawm tes tuaj yeem ua kom zoo dua qub, txo cov thermal conductivity. Hisense's patented thev naus laus zis ua pov thawj tias siv lub tshuab foaming nrog cyclopentane ua lub ntsiab lus tseem ceeb thiab ntxiv HFO-1233zd tuaj yeem txo cov npuas thermal conductivity qis dua 0.01800 W / (m·K).
5. Daim ntawv thov teb ntawm Cyclopentane-Blown Polyurethane Foam
Cyclopentane-blown polyurethane ua npuas ncauj, vim nws cov thermal rwb thaiv tsev zoo heev thiab ib puag ncig tus phooj ywg, yog siv dav hauv cov khoom siv hauv tsev, kev tsim kho, cov hlua txias, tsheb, thiab ntau lwm yam lag luam.
5.1 Lub tub yees thiab lub tub yees txias rwb thaiv tsev txheej
Rigid polyurethane foam produced using cyclopentane as a blowing agent has excellent flowability, very uniform density distribution, outstanding physical properties at low temperatures, good dimensional stability, adhesion, and short demolding time. Nws tuaj yeem siv rau ob qho tib si siab - siab thiab qis - lub tshuab ua npuas ncauj.
5.2 Cov Thawv Txias thiab Txias Chain Logistics
Lub cyclopentane / HFC-245fa mix foaming system yog tus qauv teeb tsa rau cov thawv txias, ua tau raws li cov qauv ntsuas kub ntawm cov qauv ISO.
5.3 Cov khoom siv hluav taws xob hauv tsev
Cyclopentane-Blown polyurethane yog siv rau hauv lub zog tshiab- txuag cov khoom siv hauv tsev sandwich panels thiab petrochemical pipeline rwb thaiv tsev. Ua npuas ncauj generated muaj uniform ntom thiab zoo heev dimensional stability.
5.4 Automotive interiors thiab Cushions
Saj zawg zog cyclopentane-Blown polyurethane ua npuas ncauj yog siv rau hauv cov ntaub ntawv cushioning xws li lub rooj zaum tsheb thiab headrests.
6. Kev ua tau zoo ntawm Cyclopentane-Blown Polyurethane Foam
Cyclopentane foaming system muaj cov txiaj ntsig zoo hauv ib puag ncig tus phooj ywg, tus nqi -kev ua tau zoo, thiab cov txheej txheem kom loj hlob.
| Performance Indicator | Cyclopentane Foaming System |
|---|---|
| ODP (Ozone Depletion Potential) | 0 |
| GWP (Lub Ntiaj Teb Warming Potential) | Tsawg heev |
| Thermal conductivity | 0.0180-0.033 W/(m·K) |
| Compressive zog | Txog li 320 kPa |
| Optimal Density Range | 37-52 kg/m³ |
| Sijhawm ua npuas ncauj | Yuav optimized rau 80 vib nas this |
Cyclopentane yog hu ua "nyiam hloov" rau polyurethane tshuab tshuab los ntawm cov kws tshawb fawb. Nws cov txiaj ntsig tuaj yeem raug suav hais tias yog:
Environmental friendliness:ODP tus nqi yog 0, GWP tus nqi yog negligible
Txheej txheem adaptability:Ua kua ntawm chav tsev kub, soluble hauv polyurethane raw cov ntaub ntawv
Economic viability:Yooj yim muaj cov khoom siv raw, tus nqi qis
7. Nanjing ZL Energy Co., Ltd. - Tus kws tshaj lij ntawm Cyclopentane Blowing Agent
Nanjing ZL Energy Co., Ltd. tsom rau kev tshawb fawb, kev tsim kho, thiab kev tsim cov tshuaj hydrocarbon tshuab, muab siab -cov khoom zoo cyclopentane thiab formulation txhawb rau kev lag luam polyurethane ua npuas ncauj.
Raws li ib tug kws tshaj lij ntawm hydrocarbon tshuab tshuab, Nanjing ZL Energy Co., Ltd.
7.1 Khoom Specifications
| Khoom | Purity | Daim ntawv thov |
|---|---|---|
| Cyclopentane | Ntau dua lossis sib npaug li 99.5% | Rigid thiab saj zawg zog polyurethane ua npuas ncauj tshuab tshuab |
| Mixed Pentane | Ntau qhov sib piv (70/30, thiab lwm yam) | Lub tub yees foaming, vaj huam sib luag foaming |
7.2 Kev muaj peev xwm
Formulation optimization kev them nyiaj yug:Muab cov lus pom zoo rau cyclopentane ntxiv nyiaj, ua npuas ncauj stabilizer piv, thiab lwm yam, raws li cov neeg siv khoom foaming txheej txheem
Mixed system customization:Muaj ntau yam kev daws teeb meem xws li cyclopentane / isopentane, cyclopentane / HFC-245fa, thiab lwm yam.
Kev qhia txog kev siv nyab xeeb:Muab tawg pov thawj - pov thawj cia, thauj, thiab ua haujlwm cov txheej txheem rau cov nplaim taws thiab tawg ntawm cyclopentane
7.3 Quality Assurance
Ua raws li lub teb chaws tus qauv GB / T 18825-2024 "Industrial Cyclopentane"
Cov impurities tseem ceeb xws li ya raws thiab benzene tebchaw yog nruj me ntsis tswj rau qib ppm
Cia siab rau kev sib koom ua ke C5 tus nqi saw kom zoo dua los xyuas kom meej batch stability
Xaus
Daim ntawv thov ntawm cyclopentane hauv polyurethane ua npuas ncauj tau dhau los ua cov txheej txheem thev naus laus zis los ntawm nws txoj kev txhim kho thawj zaug los ntawm Exxon xyoo 1993 rau kev ua kom zoo ntawm nws cov thermal conductivity qis dua 0.01800 W / (m·K) los ntawm cov tuam txhab xws li Hisense.
Los ntawm qhov kev xav ntawm lub tshuab ua npuas dej, cyclopentane tsim ib qho kaw - cell qauv nyob rau hauv lub polymer matrix los ntawm volatilization. Nws cov koob tshuaj ncaj qha txiav txim siab ua npuas ncauj qhov ntom ntom, lub zog, thiab thermal rwb thaiv tsev ua haujlwm. Qhov zoo tshaj qhov ntxiv yog 0.71%, ua tiav qhov kev ua tau zoo ntawm 320 kPa compressive zog thiab 0.0328 W / (m·K) thermal conductivity.
Nrog rau kev ua raws li EU F- kev tswj roj hauv 2026 thiab kev txhim kho cov qauv kev siv hluav taws xob hauv tsev, kev ua lag luam xav tau rau cyclopentane ua tus phooj ywg zoo ib puag ncig nrog ODP=0 thiab GWP qis heev yuav loj hlob ntxiv. Los ntawm kev tsim kho thev naus laus zis xws li kev sib xyaw nrog co- tshuab tshuab xws li HFC-245fa thiab kev ua kom zoo tshaj plaws catalyst systems, tseem muaj chaw rau kev txhim kho ntxiv hauv kev ua haujlwm ntawm cyclopentane-blown polyurethane ua npuas ncauj.
