Xylenethiabp-xylenemuaj kev sib raug zoo tab sis cov tshuaj sib txawv. Hauv luv luv, xylene yog ib pawg ntawm peb isomers, thaum p-xylene yog ib tus tswv cuab tshwj xeeb ntawm pawg ntawd. Nov yog qhov lawv txawv li cas:
1. Kev txhais thiab kev sau
- Xylene:Lub ntsiab lus dav dav rau kev sib xyaw ntawm peb isomers (cov qauv zoo sib xws) nrog cov qauv tshuaj tib yam (C₈H₁₀). Cov no yog ortho-xylene (o-xylene), meta-xylene (m-xylene), thiab para-xylene (p-xylene). Nws yog feem ntau muag raws li cov kuab tshuaj sib xyaw hauv kev lag luam.
- P-xylene:Ib qho, ntshiab compound (CAS 106-42-3) thiab ib qho ntawm peb xylene isomers. Nws yog cais los ntawm xylene sib tov rau kev siv tshwj xeeb.
2. Chemical Structure
Txhua xylenes muaj lub nplhaib benzene nrog ob pawg methyl (-CH₃), tab sis txoj hauj lwm ntawm cov pab pawg no txawv:
- Hauv p-xylene, ob pawg methyl yog qhov sib txawv (1,4 txoj haujlwm) ntawm lub nplhaib benzene, muab nws cov qauv sib luag.
- Lwm cov xylene isomers muaj methyl pawg nyob rau hauv ntau txoj hauj lwm: o-xylene (1,2 txoj hauj lwm, nyob ib sab) thiab m-xylene (1,3 txoj hauj lwm, nrog ib tug carbon ntawm lawv). Qhov kev sib txawv ntawm cov qauv no hloov lawv cov khoom.
3. Lub cev muaj zog
- Boiling thiab melting cov ntsiab lus: p-xylene muaj cov ntsiab lus melting ntau dua (13.2 degree) dua li cov sib tov xylene (nyob ib ncig ntawm 13℃rau kev sib tov, tab sis txawv ntawm cov muaj pes tsawg leeg) thiab o / m-xylene. Nws cov qauv symmetrical ua rau nws yooj yim dua rau cov muaju, yog li nws solidifies yooj yim dua.
- Volatility thiab solubility: Tag nrho cov xylenes yog volatile, tsis muaj kob kua nrog ib tug qab zib tsw, thiab insoluble nyob rau hauv dej. Txawm li cas los xij, p-xylene's purity txhais tau tias nws cov khoom (xws li evaporation rate) zoo ib yam li sib xyaw xylene.
4. Kev siv
- Xylene (sib xyaw): Feem ntau yog siv los ua cov kuab tshuaj hauv cov xim, txheej, thiab cov tshuaj ntxuav, qhov twg nws cov khoom sib xyaw ua haujlwm zoo rau kev sib cais ntau yam resins thiab roj. Nws kuj tseem siv rau hauv cov ntawv luam tawm thiab ua cov roj ntxiv.
- p-xylene: Yuav luag tsuas yog siv los ua terephthalic acid, cov khoom tseem ceeb hauv PET plastics (lub raj mis, polyester fibers). Nws cov qauv ntshiab, sib luag yog qhov tseem ceeb rau kev tsim cov khoom siab - zoo PET, uas yuav tsum muaj cov tshuaj tiv thaiv zoo ib yam.
Hauv cov ntsiab lus, xylene yog ib pawg npe rau peb isomers, thaum p-xylene yog ib qho isomer ntshiab nrog cov qauv tshwj xeeb thiab siv. Cov sib tov muaj nuj nqis rau ntau yam raws li cov kuab tshuaj, thaum p-xylene purity ua rau nws tseem ceeb rau cov yas tshwj xeeb.
Peb xa tawm Xylene thiab p-xylene tag nrho lub xyoo puag ncig, tuaj yeem ua kom cov khoom lag luam zoo lav rau cov neeg siv khoom.Peb muab Daim Ntawv Pov Thawj Ua Lag Luam, Cov Ntawv Sau, Daim Ntawv Sau Npe, COA.Koj puas xav tau cov khoom no? Thov xa cov lus nug, thiab peb yuav tiv tauj koj hauv 24 teev ua haujlwm los tham txog koj cov kev xav tau.
Tiv tauj peb rau ib qho kev tsocai
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Gneebio nrog ntau xyoo dhau los ntawm kev tshawb fawb, kev tsim khoom thiab kev lag luam ntawm cov tshuaj organic, yog ib qho ntawm cov neeg xa khoom ntawm cov khoom siv tshuaj hauv Henan, Suav teb.Tau ntau xyoo, peb tau cog lus rau kev lag luam tshuaj lom neeg ntawm intermediates, yas additives, dej kho tshuaj thiab fungicide, thiab tshuaj txhua hnub.
Peb cov khoom nrov muaj xws li Cov Khoom Siv Hluav Taws Xob (Polyisobutylene, Styrene Monomer, Propylene Glycol, Cyclohexanone, Cyclohexane, Isopropyl Cawv), Cov Tshuaj Txhua Hnub (Didecylmethylamine, Dodecyl dimethyl betaine), thiab ntau yam Petrochemicals (Ethylene Tar, Petroleum).
Qhov zoo
1). Cov khoom xa tuaj me me thiab sub- ntim yog muaj.
2). Muab COA, MSDS, Daim Ntawv Pov Thawj Kev Noj Qab Haus Huv thiab Daim Ntawv Pov Thawj Keeb Kwm.
3). Ua ntej, kev pabcuam zoo tshaj plaws.
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