Tetrahydroforunan

Tetrahydroforunan, i-thf efushanisiwe, iyingxenye ye-heterocyclic organic. Kungokwalesi sigaba se-ether, kungumkhiqizo opholile we-aromatic furan ephelele.

I-Tetrahydroforunan ingenye yezithako ezinamandla kakhulu ze-polar. Isetshenziswa njenge-solvent ephakathi nendawo ye-solvent ekuphendukeni kwamakhemikhali kanye nokukhishwa. Kuyinto uketshezi olungenamibala egumbini lokushisa egumbini lokushisa futhi unephunga elifana ne-ether. I-Soluble emanzini, ethanol, ether, i-acetone, i-benzenene ye-benzene nezinye izixazululo eziningi eziphilayo, ezaziwa ngokuthi "u-solvent wendawo yonke". Emazingeni okushisa asekamelweni namanzi kungabonakala ngokungazinzi, elinye ibhizinisi le-reagent elingekho emthethweni ukusebenzisa leli phuzu ku-tetrahydrofuran reagent amanzi proftent. Ngenxa yokuthambekela kwe-thf ukwakha ama-petoxides kwisitoreji, i-antioxidant BHT ifakwa kakhulu kwimikhiqizo yezimboni. Okuqukethwe umswakama ≦ 0.2%. Inezimpawu zobuthi obuphansi, iphuzu elibi elibi kanye nolwenzi oluhle.

Izakhiwo zamakhemikhali:uketshezi olungenamibala, ngephunga le-ether. Kuhlanganiswe namanzi, utshwala, iKetone, uBenzene, ester, ether, kanye nama-hydrocarbons.

Izicelo eziphambili:

1

I-Tetrahydroforan uqobo ingaba yi-polyconden (nge-catics ring-avulela repolymerization) ku-polytetramethylene ether diol (PTMeG), eyaziwa nangokuthi iTetrahydrofuran Homopolyl. I-PTMeg neTolune Diisocyanate (TDI) eyenziwe ngokuvikelwa kokugqoka, ukumelana kawoyela, ukusebenza okuphansi kokushisa, amandla aphezulu enjoloba; I-block polythert polylester ukufukula okulungiselelwe kwalungiswa nge-dimethyl terephthalate kanye ne-1, 4-butanediol. I-PTMeg ngesisindo se-molecular sika-2000 ne-P-Huttlene BIS (4-Phenyl) diisocyatate (MDI) ukwenza i-polyurethane i-fiber (i-spandex fiber), irabha elikhethekile kanye nenhloso ethile ekhethekile yokuhlanganisa izinto ezivumayo. Ukusetshenziswa okubaluleke kakhulu kwe-thf kungukukhiqizwa kwePTMeG. Ngokusho kwezibalo ezinzima, cishe ama-80% e-thf yomhlaba esetshenziselwa ukukhiqizwa kwePTMeG, futhi i-PTMeG isetshenziselwa ikakhulukazi ukukhiqizwa kwe-Spandex fiber.

2. Solvent ngokusebenza okuhle:

I-Tetrahydroforunan ivame ukusetshenziselwa i-solvent enhle kakhulu, ilungele ikakhulukazi ukuncibilika kwe-PVC, i-polyvinylidene chlorine kanye ne-anticorlosive, i-inki yokuphrinta, i-chepbook kanye ne-film coating, nge-electroplating aluminium liquid ukushuba usayizi futhi kukhanya. I-solvent ye-tepi coating, i-PVC Surface Coating, Ukuhlanza I-PVC Reactiotor, ukususa ifilimu le-PVC, i-inki yokuphrinta yeplastiki, ukugqokwa kweplastiki, ama-inks, ama-inks, ama-inks, ama-extractings kanye ne-ejenti yokwelashwa komhlaba wesikhumba sokwenziwa.

I-3. Isetshenziswa njengezinto ezivuthiwe zokuhlanganiswa kwe-organic njengemithi:

Ukuze kukhiqizwe iTetrahydrothiophene, 1.4- Dichloroteethane, 2.3- Dichlorotetrahydroforan, i-valerolactone, i-butyl lactone ne-pyrloridone. Embonini yezemithi, isetshenziswa ku-synthesis yeCoughBixin, Rifumycin, progesterone kanye nemithi ethile yama-hormone. I-Tetrahydrothiophentol ikhiqizwa ukwelashwa kwe-hydrogen sulfide, okungasetshenziswa njenge-ejenti ye-odor ku-Fuel Getros (isengezo sokuhlonza), futhi futhi yi-solvent eyinhloko embonini yezemithi.

4. Okunye ukusetshenziswa:

I-Chromatographic Solvent (i-chromatography ye-gel Pretomatography), esetshenziselwa ukunambitheka kwegesi yemvelo, i-acetylene extraction solvent, i-polymer izinto stabilizer, ikakhulukazi ekusetshenzisweni okuphezulu kwe-tetrahydroforunan, ikakhulukazi, ukukhula okusheshayo kwe-polyurethane imboni ye-polyurethane, isidingo se-PTMEG in yethu Izwe liyanda, futhi isidingo se-tetrahydrofuran sibonisa futhi umkhuba wokukhula ngokushesha.

Ingozi:I-Tetrahydroforunan ingeyasekilasini 3.1 uketshezi oluvuthayo olunokulimala nge-flash point nge-Low Flash Point, i-vapor ingakha i-eqhude ingxube nomoya, umkhawulo wokuqhuma ngu-1.5% ~ 12% (Ingxenye yevolumu), ngentengo yevolumu. Isimo sayo esivuthayo kakhulu futhi kuyingozi yokuphepha. Ukukhathazeka okukhulu kokuphepha nge-THFS ukwakheka kancane kwe-organic peroxides eqhuma kakhulu lapho kuvezwa umoya. Ukunciphisa le mingozi, i-THFS etholakala kwezentengiselwano ivame ukufakwa nge-2, 6-di-tert-butylp-cresol (BHT) ukuvimbela ukukhiqizwa kwe-organic peroxides. Ngasikhathi sinye, i-thf akufanele yomiswe ngoba i-organic peroxides izogxiliswa ezinsalweni zezinsalela zokuhlobisa.

Ukuqashwa kokusebenza:Ukusebenza okuvaliwe, umoya omncane ogcwele. Ama-opharetha kumele aqeqeshwe ngokukhethekile futhi athobele kahle izinqubo zokusebenza. Kunconywe ukuthi abahlinzeki bagqoke i-dilech yohlobo lwegesi (isigamu semaski), izibuko zokuvikela ukuphepha, izingubo ezilwa nama-turbe, namagilavu ​​amelana namafutha enjoloba. Gwema umlilo, umthombo wokushisa, awubhemi emsebenzini. Sebenzisa amasistimu womoya wokuqhuma komoya wokuqhuma kwemishini. Vikela umusi ukuthi uphunyuke emoyeni wokwenza indawo. Gwema ukuxhumana nabantu oxidants, ama-acid nezisekelo. Izinga lokugeleza kufanele lilawulwe ngesikhathi sokugcwaliswa, futhi kufanele kube nedivayisi enesisekelo ukuvikela ukunqwabelana ngogesi. Lapho ukuphatha, ukulayisha okukhanyayo nokulayisha kufanele kwenziwe ukuvikela ukulimala kokupakishwa neziqukathi. Ifakwe ngezinhlobonhlobo kanye nenani lemishini yomlilo nemishini yokuvuza yokwelashwa okuphuthumayo. Isitsha esingenalutho singaqukatha izinsalela eziyingozi.

Ukugcina Izinyathelo:Imvamisa impahla ine-inhibitor. Gcina endaweni yokugcina izinto epholile, enomoya opholile. Gwema kude nomlilo nokushisa. Izinga lokushisa lendawo yokugcina izimpahla akufanele lidlule ku-30 ​​℃. Iphakheji kufanele ivalwe futhi ingaxhumana nomoya. Kufanele igcinwe ngokwahlukana kusuka kuma-oxidizers, ama-acid nezisekelo, futhi akufanele kuxutshwe. Izindawo zokukhanya zokukhanya kanye nomoya omncane zitholwa. Ungasebenzisi imishini emishini namathuluzi athambekele ku-SPARK. Indawo yokugcina kufanele ifakwe imishini yokwelashwa okuphuthumayo yokuvuza nezinto zokwakha ezifanele.

Ukupakishwa: 180kg / Drum