Cyclopentane, n-pentane, thiab isopentane - peb isomers ntawm pentane - tuaj yeem muab sib xyaw rau hauv qhov sib txawv los tsim qhov sib txawv ntawm kev ua npuas ncauj. Lub cyclopentane / isopentane (70/30) sib xyaw ua ke yog kev sib xyaw ua ke siv dav tshaj plaws. Compared with pure cyclopentane, it achieves a 7% reduction in charging amount and a 12% reduction in foam density, while maintaining good foam stability and uniform density. Cyclopentane, nrog rau qhov kub ntawm 49 degree, muab cov pob txha txhawb nqa thiab kev ruaj ntseg, thaum isopentane, nrog rau qhov kub ntawm 28 degree, yog lub luag haujlwm rau kev txhim kho fluidity thiab cell sab hauv siab. Hauv qhov sib piv, n-pentane muaj qhov kub ntawm 36.1℃thiab feem ntau yog tov nrog isopentane rau EPS foaming. Nws ua npuas ncauj thermal conductivity yog kwv yees li 10% siab dua li ntawm cyclopentane, thiab nws qhov seem stability yog qhov nruab nrab. Nanjing ZL Energy Co., Ltd. muab cov kev pabcuam sib xyaw rau kev sib xyaw pentane hauv ntau qhov sib piv, pab cov tuam txhab sib npaug tus nqi thiab kev ua haujlwm.
1. Cov yam ntxwv ntawm "Peb Kwv Tij" ntawm Pentane
Cyclopentane (cyclic), n-pentane (ncaj-chain), thiab isopentane (branched) yog peb isomers ntawm C₅H₁₂/C₅H₁₀. Lawv qhov sib txawv ntawm qhov sib txawv txiav txim siab lawv qhov kev faib ua haujlwm thiab kev sib koom tes hauv cov txheej txheem foaming.
| Hom Pentane | Molecular Structure | Boiling Point | Flash Point | Cov yam ntxwv tseem ceeb |
|---|---|---|---|---|
| Cyclopentane | Tsib -ntiv nplhaib | 49.3 degree | -42 degree | Zoo stability, muaj zog ua npuas ncauj skeleton, zoo heev dimension stability |
| Isopentane | Ceg alkane | 27.7℃ib | -57 degree | Tsawg boiling point, siab vapor siab, zoo fluidity |
| n-Pentane | Ncaj - saw alkane | 36.1 degree | -49 degree | Tus nqi qis, kuj siab thermal conductivity, qhov nruab nrab qhov ntev stability |
Cyclopentane yog siv los muab cov npuas lub cev pob txha txhawb nqa thiab qhov ruaj khov. Isopentane yog lub luag haujlwm rau kev txhim kho fluidity thiab cell sab hauv siab. n-Pentane feem ntau yog siv los kho tus nqi hauv cov txheej txheem foaming.
2. Cyclopentane/Isopentane Mixed System - Lub "Golden Combination" rau lub tub yees Foaming
Kev sib xyaw ntawm cyclopentane thiab isopentane hauv qhov sib piv 70/30 yog tam sim no siv ntau tshaj plaws hauv kev lag luam tub yees foaming. Piv nrog cov ntshiab cyclopentane, nws tuaj yeem txo tus nqi them los ntawm 7% thiab ua npuas ncauj los ntawm 12%.
2.1 Core Performance Data
| Sib piv Indicator | Ntshiab Cyclopentane | Cyclopentane / Isopentane (70/30) | Hloov |
|---|---|---|---|
| Tus nqi them | Lub hauv paus | 7% txo | ↓ 7% |
| Ua Npuas Ncauj | Lub hauv paus | 12% txo | ↓ 12% |
| Foam Dimensional Stability | Zoo | Zoo dua | Txhim kho |
| Qhov ntom ntom Uniformity | Zoo | Ntau yam sib xws | Txhim kho |
2.2 Cov Ntsiab Cai Zoo ntawm Cov Txheej Txheem Sib xyaw
Ntxiv isopentane, uas muaj qhov kub qis dua, rau cyclopentane ua rau ob qho tseem ceeb:
Ua ntej, txhim kho fluidity.Isopentane muaj qhov kub ntawm 28℃thiab tuaj yeem vaporize nyob rau theem pib ntawm cov tshuaj tiv thaiv polyurethane, thaum sib tov ntawm polyol thiab isocyanate tseem yog cov kua viscosity tsawg. Lub tshuab tshuab ua haujlwm ua ntej thiab ntau yam sib xws, zoo heev txhim kho cov dej ntws (sau peev txheej) ntawm polyurethane system. Thaum cyclopentane: isopentane yog 80:20, qhov taw qhia fluidity (qhov siab / huab hwm coj piv) tuaj yeem nce 9%.
Thib ob, nce cell sab hauv siab.Lub siab sab hauv ntawm cov ntshiab cyclopentane- tshuab ua npuas ncauj yog kwv yees li 45 kPa, thaum lub cyclopentane / isopentane (70/30) sib xyaw ua ke tuaj yeem nce mus rau 55 kPa. Qhov siab dua ntawm tes hauv siab txo qhov cuam tshuam ntawm sab nraud quab yuam ntawm lub cev ua npuas ncauj thiab txo qis qhov sib txawv ntawm sab hauv thiab sab nraud ntawm lub hlwb, yog li txhim kho qhov kev ruaj ntseg.
2.3 Kev Ua Lag Luam Kev Ua Lag Luam Sib Piv
| Hom kev sib xyaw | Piv txwv | Daim ntawv thov tseem ceeb |
|---|---|---|
| Cyclopentane / Isopentane | 30/70 | Polyurethane ua npuas ncauj |
| Isopentane/n-Pentane | 25/75 | Ua npuas ncauj ntau lawm, propellant |
| Isopentane/n-Pentane | 20/80 | Ua npuas ncauj ntau lawm, propellant |
Tsis tas li ntawd, Nanjing ZL Energy Co., Ltd. kuj muab ntau yam specifications xws li 10/90, 50/50, 60/40, 30/70, 70/30, 80/20, thiab lwm yam.
3. Cyclopentane/n-Pentane/Isopentane Ternary Mixed System
Kev sib xyaw cyclopentane, n-pentane, thiab isopentane hauv cov piv txwv tshwj xeeb tuaj yeem ua tiav qhov sib npaug ntawm cov nqi thiab kev ua haujlwm.
| Cheebtsam | Parts los ntawm Nyhav |
|---|---|
| Cyclopentane | 11-19 : kuv |
| n-Pentane | 16-28 : kuv |
| Isopentane | 23-36 : kuv |
| Oleic Acid | 0.5-5 ntu |
| Deionized dej | 31-47 : kuv |
| Emulsifier | 0.5-2 ntu |
Kev tsim kho tshiab ntawm cov qauv no yog nyob rau hauv: los ntawm emulsifying ntau yam pentanes nrog oleic acid, qhov tsis xws luag ntawm pentanes (flammable, explosive, nyuaj rau khaws) tau kov yeej, tso cai rau pentane -raws li tshuab cov neeg ua hauj lwm kom pom zoo solubility thiab dispersibility nyob rau hauv lub polyurethane foaming system.
4. n-Pentane/Isopentane Mixed System - Lub ntsiab rau EPS Foaming
Cov txheej txheem sib xyaw ntawm n-pentane thiab isopentane feem ntau yog siv rau EPS (expandable polystyrene) foaming. Thaum tag nrho cov feem ntawm ob mus txog 99%, nws tuaj yeem siv los ua tus neeg sawv cev styrene tshuab.
4.1 Kev sib piv ntawm n-Pentane thiab Cyclopentane
Lub thermal conductivity ntawm n-pentane- tshuab ua npuas ncauj feem ntau yog li 10% siab dua li ntawm cyclopentane (0.022-0.024 vs. 0.020-0.022 W/m·K), thiab nws qhov seem stability kuj yog qhov nruab nrab.
n-Pentane muaj qhov kub ntawm 36.1 degree, uas nyob nruab nrab ntawm cyclopentane (49.3 degree) thiab isopentane (27.7℃). Nws qhov hnyav molecular kuj tseem me dua, yog li tus nqi siv nyob rau hauv tib lub formulation yog tsawg dua, ua rau cov khoom siv qis dua.
4.2 Keeb Kwm Evolution ntawm n-Pentane/Isopentane Mixing
Xyoo 1995, European cov tuam txhab tub yees tau pib sim n-pentane/isopentane mixing technology, vam tias yuav tswj cov nqi los ntawm kev txo cov nqi them. Txawm li cas los xij, cov thev naus laus zis no tau ua rau lub zog siv hluav taws xob ntau dua li ntawm cyclopentane thev naus laus zis, yog li nws tau maj mam tso tseg hauv xyoo 1996.
Tom qab ntawd, xyoo 1996, Huntsman Polyurethanes tau pib siv tshuab cyclopentane / isopentane sib xyaw ua npuas ncauj tshuab, uas txo cov nqi thaum tswj kev siv hluav taws xob, thiab tau siv nyob rau hauv kev lag luam tub yees txij thaum ntawd los.
5. Yuav ua li cas xaiv ib tug Mixed Pentane System?
Kev xaiv ntawm qhov sib xyaw pentane system siv yuav tsum ua tib zoo xav txog peb yam: ua npuas ncauj kev ua tau zoo, cov khoom siv, thiab cov nqi siv nyiaj.
5.1 Kev sib piv ntawm Peb Cov Txheej Txheem Sib Tw
| Mixed System | Qhov zoo | Qhov tsis zoo | Siv tau Scenarios |
|---|---|---|---|
| Cyclopentane / Isopentane | Tsawg them nqi, tsawg ntom, zoo fluidity, seem stability | Cov cuab yeej yuav tsum tau tawg - pov thawj retrofitting | Cov tub yees, freezers, panels |
| Cyclopentane/n-Pentane/Isopentane (ternary) | Kev ua tau zoo sib npaug, zoo stability | Complex formulation, siab npaj yuav tsum | High-cov khoom ua npuas ncauj kawg |
| n-Pentane/Isopentane | Tus nqi qis tshaj | Kev siv hluav taws xob siab, feem ntau phased tawm | EPS ua npuas ncauj |
5.2 "Golden Window" rau Isopentane Ntxiv
Cov ntaub ntawv qhia tau hais tias ntau isopentane ntxiv tsis yog ib txwm zoo dua:
| Cyclopentane/Isopentane Ratio | Kev txhim kho Fluidity (Qhov siab / huab cua sib piv) |
|---|---|
| 100/0 | Lub hauv paus |
| 80/20 | Nce los ntawm kwv yees li 9% |
| 70/30 | Ntxiv ntxiv, tab sis qhov increment txo |
Raws li qhov kev faib ua feem ntawm isopentane maj mam nce, qhov kev txhim kho hauv fluidity qhia tau tias txo qis qis rov qab los. Thaum cov isopentane feem ntau tshaj 30%, qhov kev txhim kho ntawm fluidity thiab sab hauv siab maj mam tsis muaj zog, thiab tej zaum yuav ua rau txo qis hauv npuas lub zog.
5.3 Cov lus qhia kev nyab xeeb
Mixed pentane muaj tib theem kev nyab xeeb zoo li ntshiab cyclopentane. Mixed pentane tuaj yeem siv ncaj qha rau ntawm cov kab uas twb muaj lawm cyclopentane foaming ntau lawm yam tsis muaj kev ruaj ntseg ntxiv.
6. Chaw tsim tshuaj paus Advantage - Nanjing ZL Energy Co., Ltd.
Nanjing ZL Energy Co., Ltd., raws li tus kws tshaj lij hydrocarbon tshuab tshuab cov chaw tsim khoom, muab kev pabcuam kev cai rau cyclopentane, isopentane, n-pentane, thiab sib xyaw pentanes hauv ntau qhov sib piv.
Product Matrix:Cyclopentane (purity Ntau dua lossis sib npaug rau 99.5%), n-Pentane, Isopentane, Mixed Pentane (ntau qhov sib piv muaj)
Kev Muaj Peev Xwm:Muaj peev xwm tsim cov tshuab sib xyaw pentane hauv qhov sib txawv raws li cov neeg siv khoom tub yees foaming formulation yuav tsum
Kev them nyiaj yug daim ntawv thov:Muab tag nrho- txheej txheem kev txhawb nqa los ntawm kev xaiv cov khoom lag luam kom ua kom zoo dua
Kev cia siab rau nws txoj kev sib koom ua ke C5 tus nqi saw zoo, Nanjing ZL Energy Co., Ltd. ua kom cov khoom lag luam ruaj khov, muab kev lag luam nrog tus nqi dual ntawm "kev hloov pauv ib puag ncig + nqi optimization."
Xaus
Cyclopentane, n-pentane, thiab isopentane tuaj yeem sib xyaw ua ke sib txawv los ua cov tshuab ua npuas dej nrog kev ua yeeb yam sib txawv thiab cov nqi. Lub cyclopentane / isopentane (70/30) sib xyaw ua ke, los ntawm kev tsim txiaj ntawm nws qhov kev ua tau zoo ntawm "7% txo qis hauv kev them nyiaj thiab 12% txo qhov ntom," tau dhau los ua qhov kev xaiv tseem ceeb hauv kev lag luam tub yees foaming. Qhov sib ntxiv ntawm isopentane tsis tsuas yog txhim kho cov flowability thiab cell sab hauv siab ntawm cov npuas dej tab sis kuj txo cov nqi tsim khoom. Nyob rau tib lub sijhawm, nws tuaj yeem siv ncaj qha siv cov kab ntau lawm cyclopentane, kom ntseeg tau tias muaj kev nyab xeeb thiab yoog raws.
