I-Tetrahydrofuran

I-Tetrahydrofuran, esifushanisiwe i-THF, i-heterocyclic organic compound.Kungokwesigaba se-ether, umkhiqizo owenziwe ngephunga elimnandi we-furan ophelele we-hydrogenation.

I-Tetrahydrofuran ingenye yama-ether e-polar aqine kakhulu.Isetshenziswa njenge-solvent ye-polar ephakathi ekuphenduleni kwamakhemikhali nasekukhishweni.Iwuketshezi oluguquguqukayo olungenambala olusezingeni lokushisa elilingana negumbi futhi lunephunga elifana nele-ether.Incibilika emanzini, i-ethanol, i-ether, i-acetone, i-Chemicalbook benzene nezinye izincibilikisi eziningi eziphilayo, ezaziwa ngokuthi "i-solvent universal".Emazingeni okushisa asekamelweni namanzi kungahle kuxubene ngokwengxenye, ibhizinisi elithile le-reagent elingekho emthethweni ukusebenzisa leli phuzu ku-tetrahydrofuran reagent water profiteer.Ngenxa yokuthambekela kwe-THF ukwenza ama-peroxides endaweni yokugcina, i-antioxidant BHT ivame ukungezwa emikhiqizweni yezimboni.Okuqukethwe umswakama ≦0.2%.Inezici zobuthi obuphansi, indawo yokubilisa ephansi kanye noketshezi oluhle.

Izakhiwo zamakhemikhali:uketshezi olukhanyayo olungenambala, olunephunga le-ether.Ihlanganiswe namanzi, utshwala, i-ketone, i-benzene, i-ester, i-ether, nama-hydrocarbons.

Izinhlelo zokusebenza eziyinhloko:

1. Izinto zokusetshenziswa ze-spandex synthesis reaction:

I-Tetrahydrofuran ngokwayo ingaba i-polycondensation (nge-cationic ring-opening repolymerization) ibe yi-polytetramethylene ether diol (PTMEG), eyaziwa nangokuthi i-tetrahydrofuran homopolyl.I-PTMEG ne-toluene diisocyanate (TDI) eyenziwe ngokumelana nokugqoka, ukumelana nowoyela, ukusebenza okuphansi kwezinga lokushisa, amandla aphezulu erabha ekhethekile;I-block polyether polyester elastic material yalungiswa nge-dimethyl terephthalate kanye ne-1, 4-butanediol.I-PTMEG enesisindo samangqamuzana esihlobene esingu-2000 kanye ne-p-methylene bis (4-phenyl) diisocyanate (MDI) ukwenza i-polyurethane elastic fiber (i-SPANDEX fiber), irabha ekhethekile kanye nenhloso ethile ekhethekile yokuhlanganisa izinto zokusetshenziswa.Ukusetshenziswa okubaluleke kakhulu kwe-THF ukukhiqizwa kwe-PTMEG.Ngokwezibalo ezingezinhle, cishe amaphesenti angama-80 e-THF yomhlaba wonke asetshenziselwa ukukhiqizwa kwe-PTMEG, kanti i-PTMEG isetshenziselwa ikakhulukazi ukukhiqizwa kwe-spandex fiber.

2. Incibilika esebenza kahle kakhulu:

I-Tetrahydrofuran iyi-solvent enhle kakhulu evame ukusetshenziswa, ifaneleka ngokukhethekile ukuncibilikisa i-PVC, i-polyvinylidene chloride ne-butyl aniline, esetshenziswa kabanzi njenge-surface coating, i-anticorrosive coating, inki yokunyathelisa, i-tape ne-film coating solvent, ene-Chemicalbook ku-electroplating aluminium liquid ingaba ukulawula ngokungafanele kwe-aluminium. ukujiya ungqimba futhi elikhanyayo.I-solvent ye-tape enamathela, i-PVC surface coating, ukuhlanza i-PVC reactor, ukususa ifilimu ye-PVC, i-cellophane coating, inki yokuphrinta yepulasitiki, i-thermoplastic polyurethane coating, i-adhesive, evame ukusetshenziswa ekugqokeni okungaphezulu, okokuvikela, oyinki, ama-extractants kanye nama-ejenti okwelapha angaphezulu kwesikhumba sokwenziwa.

3. Isetshenziswa njengezinto ezingavuthiwe zokwakheka kwe-organic njengemithi:

Ukuze kukhiqizwe i-tetrahydrothiophene, i-1.4- dichloroethane, i-2.3- dichlorotetrahydrofuran, i-valerolactone, i-butyl lactone ne-pyrrolidone.Embonini yezemithi, isetshenziswa ekuhlanganiseni i-coughbixin, i-rifumycin, i-progesterone nezinye izidakamizwa ze-hormone.I-Tetrahydrothiophenol ikhiqizwa ukwelashwa kwe-hydrogen sulfide, engasetshenziswa njenge-ejenti yephunga ku-fuel gas (i-identification additive), futhi iyincibilikisi eyinhloko embonini yezemithi.

4. Okunye Ukusetshenziswa:

I-solvent ye-Chromatographic (i-gel permeation chromatography), esetshenziselwa ukunambitheka kwegesi yemvelo, i-acetylene extraction solvent, i-polymer material light stabilizer, njll. izwe liyanda, futhi isidingo se-tetrahydrofuran siphinde sibonise ukuthambekela kokukhula okusheshayo.

Ingozi:I-Tetrahydrofuran ingeye-class 3.1 uketshezi oluvuthayo olunephuzu eliphansi, elivutha kakhulu, umhwamuko ungakha ingxube eqhumayo nomoya, umkhawulo wokuqhuma ngu-1.5% ~ 12% (ingxenye yevolumu), ngokucasuka.Imvelo yayo evuthayo kakhulu futhi iyingozi kwezokuphepha.Okukhathaza kakhulu ukuphepha nge-THFS ukwakheka kancane kwamaperoxide emvelo aqhuma kakhulu lapho evezwe emoyeni.Ukuze kuncishiswe lobu bungozi, i-THFS etholakala ngokudayiswa ivamise ukwengezwa nge-2, 6-di-tert-butylp-cresol (BHT) ukuvimbela ukukhiqizwa kwe-organic peroxides.Ngesikhathi esifanayo, i-THF akufanele yomiswe ngoba ama-peroxides e-organic azogxiliswa ezinsaleleni zokukhishwa kwe-distillation.

Izinyathelo zokuphepha:ukusebenza okuvaliwe, ukungena komoya okugcwele.Ama-operators kumele aqeqeshwe ngokukhethekile futhi alandele ngokuqinile izinqubo zokusebenza.Kunconywa ukuthi opharetha bagqoke imaski yegesi yohlobo lokuhlunga (imaski enguhhafu), izibuko zokuvikela ukuphepha, izingubo eziphikisana ne-static, namagilavu ​​amelana nenjoloba.Gcina kude nomlilo, umthombo wokushisa, ungabhemi emsebenzini.Sebenzisa amasistimu nemishini yokungenisa umoya engaqhumi.Vimbela isitimu ekuphunyukeni emoyeni wasemsebenzini.Gwema ukuthintana nama-oxidants, ama-asidi nezisekelo.Izinga lokugeleza kufanele lilawulwe ngesikhathi sokugcwalisa, futhi kufanele kube nensiza yaphansi ukuvimbela ukunqwabelana kwe-electrostatic.Lapho uphatha, ukulayishwa okulula kanye nokuthulula kufanele kwenziwe ukuvimbela ukulimala kokupakisha neziqukathi.Ifakwe izinhlobonhlobo ezihambisanayo kanye nenani lamathuluzi omlilo kanye nemishini yokwelapha izimo eziphuthumayo evuzayo.Isiqukathi esingenalutho singaqukatha izinsalela eziyingozi.

Imithetho yesitoreji:Ngokuvamile impahla ine-inhibitor.Gcina endaweni epholile, engenisa umoya.Gcina kude nomlilo nokushisa.Izinga lokushisa endaweni yokugcina impahla akufanele lidlule 30 ℃.Iphakheji kufanele ivalwe futhi ingaxhumani nomoya.Kufanele igcinwe ngokuhlukana nama-oxidizers, ama-acids nezisekelo, futhi akufanele ihlanganiswe.Kwamukelwe izindawo zokukhanyisa ezingaqhumi futhi zokungenisa umoya.Ungayisebenzisi imishini namathuluzi ajwayele ukuba nenhlansi.Indawo yokugcina kufanele ifakwe izinto zokwelashwa eziphuthumayo ezivuzayo kanye nezinto zokubamba ezifanele.

Ukupakisha: 180KG/isigubhu