I-Tetrahydrofuran/CAS:109-99-9
Incazelo emfushane:
I-Tetrahydrofuran/I-CAS:109-99-9
Igama Lomkhiqizo:I-Tetrahydrofuran
I-CAS:109-99-9
I-MF:C4H8O
I-MW: 72.11
ISAKHIWO:
incazelo
| Into | Imininingwane |
| Indawo Yokuncibilika | -108°C |
| Indawo Yokubilisa | 66 °C |
| Ubuningi | 0.887 g/mL ku-20 °C |
| Ubuningi bomusi | 2.5 (uma kuqhathaniswa nomoya) |
| Ukucindezela Komusi | <0.01 mm Hg (25 °C) |
| Inkomba Yokubukeza | n20/D 1.465 |
| Indawo Yokukhanyisa | >230 °F |
| inani le-pH | 7-8 (200g/l, H2O, 20℃) |
| Iphunga | I-Ether, itholakala ku-2 kuya ku-50ppm |
| Umkhawulo Wokuqhuma | 1.5-12.4%(V) |
| Indawo Yokuqandisa | -108℃ |
I-Tetrahydrofuran, efushaniswe ngokuthi i-THF, iyinhlanganisela yezinto eziphilayo ezi-heterocyclic. Njengoba iyingxenye yesigaba se-ether, ingumkhiqizo ogcwele i-hydrogen we-furan ehlanganisiwe enephunga elimnandi. I-Tetrahydrofuran ingenye yama-ether e-polar anamandla kakhulu, asetshenziswa njenge-solvent ye-polarity ephakathi ekuphenduleni kwamakhemikhali nasekukhipheni. Iwuketshezi olungenambala noluguquguqukayo ekushiseni kwegumbi, olunephunga elifanayo ne-ether. Incibilikiswa ezinyibilikisini eziningi zezinto eziphilayo ezifana namanzi, i-ethanol, i-ether, i-acetone, ne-benzene, ibizwa ngokuthi "i-solvent yendawo yonke". Ekushiseni kwegumbi, ixubana kancane namanzi, futhi abanye abathengisi be-reagent abangemthetho basebenzisa lokhu ukuze benze inzuzo enkulu ngokuxuba i-reagent ye-tetrahydrofuran namanzi. Ngenxa yokuthambekela kwe-THF ekwakheni ama-peroxide ngesikhathi sokugcina, imikhiqizo yezimboni ngokuvamile ingeza i-BHT e-antioxidant. Okuqukethwe komswakama ≤ 0.2%. Inezici zobuthi obuphansi, iphuzu lokubila eliphansi, kanye nokugeleza okuhle.
Ukusetshenziswa
1. Ukusabela kokwenziwa kwe-spandex kwezinto zokusetshenziswa i-tetrahydrofuran ngokwayo kungaba yi-polycondensation (ngokusebenzisa i-cation ring-opening polymerization) ibe yi-polytetramethylene ether glycol (PTMEG), eyaziwa nangokuthi i-tetrahydrofuran homopolymerization ether. I-PTMEG kanye ne-toluene diisocyanate (TDI) zenziwe ngamarabha amelana nokuklwebheka, amelana namafutha, asebenza kahle ekushiseni okuphansi, anamandla aphezulu; kanye ne-dimethyl terephthalate kanye ne-1,4-butanediol ezenziwe ngezinto ze-polyester elastomer ezivinjiwe. Isisindo sama-molecule esihlobene se-PTT singu-2,000. Isisindo sama-molecule esihlobene se-PTMEG engu-2000 kanye ne-p-methylene bis (4-phenyl) diisocyanate (MDI) eyenziwe ngemicu ye-polyurethane elastic (spandex, SPANDEX fiber), amarabha akhethekile kanye nezinye izinto zokusetshenziswa ezikhethekile. I-THF iyindlela ebaluleke kakhulu esetshenziselwa ukukhiqizwa kwe-PTMEG, ngokwezibalo ezilinganiselwe, ngaphezu kwama-80% e-THF yomhlaba wonke asetshenziselwa ukukhiqizwa kwe-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG, kanye ne-PTMEG. I-PTMEG, kanye ne-PTMEG isetshenziswa kakhulu ekukhiqizweni kwemicu ye-spandex elastic.
2. I-solvent esebenza kahle kakhulu i-tetrahydrofuran iyi-solvent enhle esetshenziswa kakhulu, ikakhulukazi ekuncibilikiseni i-PVC, i-polyvinylidene chloride kanye ne-butylaniline, esetshenziswa kabanzi njenge-solvent yezingubo zomphezulu, izambatho ezilwa nokugqwala, uyinki wokunyathelisa, amateyipu kanye nezingubo zefilimu ze-electro-Chemicalbook Aluminium Plating Liquid ingalawula ngokungenanjongo ukujiya kwe-aluminium kanye nokuKhanya. I-magnetic tape coating, i-PVC surface coating, ukuhlanza i-PVC reactor, ukususa ifilimu ye-PVC, i-cellophane coating, i-plastic printing inkino, i-thermoplastic polyurethane coating, i-solvents ye-glues, esetshenziswa kabanzi ezigqokeni zomphezulu, izambatho zokuvikela, uyinki, ama-extractants kanye nama-agent okwelapha umphezulu wesikhumba sokwenziwa.
3. Isetshenziswa njengezinto zokusetshenziswa zokwenziwa kwezinto eziphilayo njengemithi esetshenziswa ekukhiqizweni kwe-tetrahydrothiophene, 1.4 - dichloroethane, 2.3 Isetshenziselwa ukukhiqiza i-tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyrolactone kanye ne-pyrrolidone. Embonini yemithi, isetshenziselwa ukwenziwa kwe-cough, i-Rifamycin, i-progesterone kanye neminye imithi yama-hormone. I-Tetrahydrothiophenol ikhiqizwa ngokwelashwa kwe-hydrogen sulfide, engasetshenziswa njengephunga elimnandi kugesi kaphethiloli (izithasiselo zokuhlonza), futhi iyisisombululo esiyinhloko embonini yemithi.
4. Okunye Ukusetshenziswa I-chromatographic solvent (i-gel permeation chromatography), esetshenziselwa ukunambitha igesi yemvelo, i-solvent yokukhipha i-acetylene, kanye neziqinisi zokukhanya zezinto ze-polymer. Ngokusetshenziswa kabanzi kwe-tetrahydrofuran, ikakhulukazi ukukhula okusheshayo kwemboni ye-spandex yaseShayina eminyakeni yamuva nje, okwenza isidingo saseShayina se-PTMEG sikhule, futhi isidingo esiphumelayo se-tetrahydrofuran naso siyindlela ekhula ngokushesha.
Ukupakisha Nokuthumela
180KG/Isigubhu noma ngokwezidingo zamakhasimende.
Ingaletha ngolwandle nangomoya
Gcina futhi ugcine
Isikhathi sokuphila: Izinyanga ezingama-24 kusukela ngosuku lokwenziwa kwento epakishweni lokuqala elingavulwanga, igcinwe endaweni epholile neyomile kude nokukhanya kwelanga okuqondile, amanzi.
Indawo yokugcina izinto enomoya, Ukomisa okuphansi kwezinga lokushisa, Ihlukaniswe nama-oxidants, ama-acid.
