Xylene (CAS 1330-20-7)muaj qhov nruab nrab -rau- qeeb evaporation tus nqi, feem ntau hais txog kwv yees li 0.6–0.7 txheeb ze rau n-butyl acetate (n-BuAc=1.0), kev lag luam- qauv siv hnyav. Qhov no muab cov xylene sib xyaw ntawm ceev -evaporating esters thiab ketones ntawm ib sab, thiab qeeb-evaporating glycols thiab hnyav dua aromatics rau lwm yam - uas yog vim li cas nws thiaj li tau siv los ua "workhorse" hnyav nyob rau hauv hnyav-raws li xim, txheej, hauv daim ntawv thov kom qhuav nyob rau hauv lub sij hawm ua hauj lwm thiab adhesives. lub sij hawm tsim khoom siv tau.
Evaporation Rate Comparison Table
Cov lus hauv qab no sib piv cov xylene sib xyaw rau lwm cov kuab tshuaj uas feem ntau pom nyob rau hauv tib txheej txheej thiab number case formulations, siv n-butyl acetate raws li tus qauv siv taw tes (ER=1.0). Qhov tseem ceeb yog cov ntawv luam tawm raws li kev siv ntau yam; Qhov tseeb evaporation tus nqi nyob ntawm qhov kev sim, qhov kub thiab txias, huab cua ntws thiab cov qib hnyav hnyav - ib txwm lees paub cov lej tseeb tawm tsam TDS tam sim no.
| Solvent | Relative Evaporation Rate (n-BuAc=1.0) | evaporation ceev qeb |
|---|---|---|
| Ethyl Acetate | ~4.1 | Ceev ceev |
| Toluene | ~2.0 | Fast – Nruab nrab |
| n-Butyl Acetate (reference) | 1.0 | Nruab nrab |
| Mixed Xylene | ~0.6–0.7 | Nruab nrab-Slow |
| n-Butanol | ~0.46 | qeeb |
| Glycol Ethers (tus qauv) | <0.3 | Yooj yim heev |
Vim li cas Mixed Xylene's Evaporation Rate Suits Industrial Coatings
Qhov nruab nrab - tus nqi qis evaporation muaj ntau yam zoo rau cov xim thiab txheej txheej:
- Lub sij hawm qhib txaus - Sib tov xylene tsis tawm tam sim ntawd tom qab daim ntawv thov, muab sijhawm rau cov neeg siv los txhuam, yob lossis tshuaj tsuag sib npaug ua ntej zaj duab xis pib.
- Txo txoj kev pheej hmoo ntawm qhov tsis xws luag - Cov kuab tshuaj uas evaporate sai heev tuaj yeem cuam tshuam huab cua thiab ua rau pinholing, blistering lossis tsis zoo; sib tov xylene ntau gradual evaporation txhawb smoother zaj duab xis tsim.
- Kev sib npaug zoo nrog cov kuab tshuaj nrawm - Thaum sib xyaw nrog nrawm dua -evaporating esters lossis ketones (xws li ethyl acetate lossis MEK), sib xyaw xylene pab "tuav" zaj duab xis qhib ntev txaus kom txaus txaus- tawm, thaum cov khoom nrawm dua tswj kev pib tack- lub sijhawm dawb.
- Tau tshaj ntau txoj kev siv - Cov tshuaj tsuag, txhuam, cov menyuam thiab daim ntawv thov dip tag nrho tau txais txiaj ntsig los ntawm cov kuab tshuaj evaporation profile uas tsis nruj heev, uas sib xyaw xylene feem ntau muab.
Evaporation Rate thiab Solvent Blend Design
Hauv kev xyaum, feem ntau cov txheej txheem kev lag luam tsis cia siab rau ib qho hnyav ib zaug - lawv siv cov khoom sib xyaw ua ke nyob ib puag ncig ntawm evaporation nkhaus: cov kuab tshuaj nrawm los tswj kev pib flash-tawm, nruab nrab cov kuab tshuaj xws li sib xyaw xylene los tswj nruab nrab - theem ziab thiab theem, thiab qee zaum qeeb cov kuab tshuaj los tswj kev kho zaum kawg thiab kev txhim kho gloss. Thaum tsim hom kev sib xyaw no, cov neeg tsim qauv feem ntau xav txog:
- Lub hom phiaj lub sij hawm qhuav - Kev nrawm dua tag nrho cov evaporation shortens lub sij hawm ntau lawm tab sis ua rau muaj kev pheej hmoo ntawm daim ntawv thov tsis xws luag yog tias thawb dhau mus.
- Daim ntawv thov txoj kev - Daim ntawv thov tshuaj tsuag feem ntau zam qhov sib txawv evaporation profile dua li txhuam los yog daim ntawv thov dip.
- Ambient tej yam kev mob - Qhov kub thiab av noo ntawm daim ntawv thov site cuam tshuam tiag tiag -lub ntiaj teb ziab ceev, txawm tias cov kuab tshuaj nrog tib lub chaw sim- kuaj evaporation tus nqi.
- Resin compatibility - Cov kuab tshuaj uas tau xaiv yuav tsum yaj cov txheej txheem resin kom zoo thaum lub sij hawm ziab, tsis yog thaum pib.
Yog xav paub ntxiv txog yuav ua li cas sib xyaw xylene ua haujlwm thoob plaws cov txheej txheem sib txawv thiab kev siv, saib peb tsab xov xwm ntawmsib xyaw xylene siv nyob rau hauv cov xim thiab coatings.
Yuav ua li cas Evaporation Rate cuam tshuam rau Boiling Point thiab Flash Point
evaporation tus nqi yog sib txuas nrog cov kuab tshuaj lub boiling point - feem ntau, qhov qis ntawm boiling point, qhov ceev ntawm evaporation tus nqi, tab sis molecular qauv thiab polarity kuj ua lub luag hauj lwm. Sib tov xylene qhov kub ntawm kwv yees li 137-140℃(saib peb tsab xov xwm ntawmsib tov xylene boiling point) muab tso rau hauv qhov nruab nrab - mus rau - qeeb evaporation qeb, raws li nws cov txheeb ze evaporation tus nqi saum toj no. Nws qhov taw tes nyem (~ 27-32 degree, them rau hauv pebmix xylene flash pointtsab xov xwm) yog ib qho kev sib cais tab sis muaj feem xyuam nrog cov cuab yeej uas tswj cov nplaim taws ntau dua li ziab nrawm.
Vim li cas Formulators cia siab rau GNEE BIO rau Kev Ua Haujlwm Zoo Tshaj Plaws
Batch-rau-batch sib xws nyob rau hauv isomer piv ncaj qha cuam tshuam rau evaporation tus nqi sib xws, uas yog vim li cas kev nrhiav los ntawm tus neeg muag khoom ntseeg tau tseem ceeb.Tianjin Gnee Biotech Co., Ltd. (GNEE BIO), tsim nyob rau hauv 2021, khoom siv Mixed Xylene (CAS 1330-20-7) nrog:
- Ua tib zoo, cov ntaub ntawv qhia tshwj xeeb txhawb nqa los ntawm COA rau txhua qhov khoom xa tuaj
- TDS cov npe evaporation-cov khoom muaj feem xws li qhov kub kub, qhov ntom ntom thiab lub teeb nyem
- Kev muab khoom ntim nrog cov ntim tau yooj yim (nruas, IBC tso tsheb hlau luam, ISO tso tsheb hlau luam) kom ruaj khov, rov ua dua tshiab
- Kev txhawb nqa los pab ua kom hnyav hnyav sib xyaw tsim rau koj lub hom phiaj ziab kom qhuav
FAQ: Mixed Xylene Evaporation Rate
Q: Puas yog sib xyaw xylene "ceev" lossis "slow" evaporating hnyav?
Mixed xylene feem ntau muab faib ua qhov nruab nrab - mus rau - evaporating hnyav, evaporating qeeb dua esters xws li ethyl acetate los yog aromatic solvents xws li toluene, tab sis sai dua glycol ethers los yog hnyav dua cawv.
Q: Vim li cas cov formulators sib xyaw xylene nrog cov kuab tshuaj sai dua?
Kev sib xyaw ua kom sib npaug ntawm qhov kev ziab kom qhuav tag nrho - cov kuab tshuaj sai dua tswj xyuas qhov chaw pib thaum lub sij hawm sib xyaw xylene ncua sij hawm qhib thiab txhawb nqa txawm tias zaj duab xis theem ua ntej ziab tag nrho.
Q: Puas yog qhov kub thiab txias cuam tshuam rau kev sib xyaw xylene tus nqi evaporation?
Yog lawm. Kev kub siab ambient nce evaporation tus nqi rau tag nrho cov kuab tshuaj, nrog rau cov sib xyaw xylene, yog li tiag tiag -lub ntiaj teb ziab lub sij hawm nyob rau hauv ib lub Hoobkas los yog daim ntawv thov teb yuav txawv ntawm standardized lab evaporation tus nqi nqi.
Txhawm rau thov evaporation-tshwj xeeb TDS cov ntaub ntawv lossis sib tham txog cov kuab tshuaj sib xyaw tsim rau koj cov qauv,hu rau GNEE BIO.