I-Tetrahydrofuran

I-Tetrahydrofuran, esifushanisiwe i-THF, i-heterocyclic organic compound. Kungokwesigaba se-ether, umkhiqizo we-hydrogenation oyinhlanganisela enamakha enephunga elimnandi.

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 ephansi yokubilisa kanye ne-fluidity enhle.

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, ne-Chemicalbook ku-electroplating aluminium liquid ingaba ukulawulwa ngokungafanele kogqinsi lwe-aluminium nokukhanya. 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 Ngokusetshenziswa okubanzi kwe-tetrahydrofuran, ikakhulukazi eminyakeni yamuva, ukukhula okusheshayo kwemboni ye-polyurethane, isidingo se-PTMEG ezweni lethu siyanda, futhi isidingo se-tetrahydrofuran siphinde sibonise umkhuba wokukhula ngokushesha.

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 ephansi 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. Ukushisa kwendawo yokugcina impahla akufanele kudlule i-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