I-Tetrahydrofuran/CAS:109-99-9
Inkcazo emfutshane:
I-Tetrahydrofuran/CAS:109-99-9
Igama lemveliso:I-Tetrahydrofuran
I-CAS: 109-99-9
MF:C4H8O
MW: 72.11
ULWAKHIWO:
iinkcukacha
| Into | Inkcazo |
| Indawo yokunyibilika | -108°C |
| Indawo yokubilisa | 66 °C |
| Uxinano | 0.887 g/mL kwi-20 °C |
| Uxinano lomphunga | 2.5 (xa kuthelekiswa nomoya) |
| Uxinzelelo lomphunga | <0.01 mm Hg (25 °C) |
| Isalathiso sokuKhangela | n20/D 1.465 |
| Indawo yokuKhanya | >230 °F |
| ixabiso le-pH | 7-8 (200g/l, H2O, 20℃) |
| Ivumba elibi | I-Ether, ifumaneka kwi-2 ukuya kwi-50ppm |
| Umda Wokuqhuma | 1.5-12.4%(V) |
| Indawo yokuqandisa | -108℃ |
I-Tetrahydrofuran, efinyeziweyo njenge-THF, yi-heterocyclic organic compound. Ikwiklasi ye-ether, yimveliso epheleleyo ye-hydrogenated ye-aromatic compound furan. I-Tetrahydrofuran yenye yee-polar ethers ezinamandla, ezisetyenziswa njenge-medium polarity solvent kwi-chemical reactions kunye ne-extract. Yi-liquid engenambala kwaye iguquguqukayo kubushushu begumbi, enevumba elifanayo ne-ether. Inyibilikiswe kwii-organic solvents ezininzi ezifana namanzi, i-ethanol, i-ether, i-acetone, kunye ne-benzene, ibizwa ngokuba yi-"universal solvent". Kubushushu begumbi, ixutywa kancinci namanzi, kwaye abanye abathengisi be-reagent abangekho mthethweni basebenzisa oku ukuze benze inzuzo enkulu ngokuxuba i-tetrahydrofuran reagent namanzi. Ngenxa yokuthambekela kwe-THF ekwenzeni ii-peroxides ngexesha lokugcinwa, iimveliso zoshishino ngokubanzi zongeza i-antioxidant BHT. Umxholo womswakama ≤ 0.2%. Ineempawu zetyhefu ephantsi, iqondo lokubila eliphantsi, kunye nokugeleza okuhle.
Ukusetyenziswa
1.Impendulo yokwenziwa kwe-spandex yezinto eziluhlaza i-tetrahydrofuran ngokwayo inokuba yi-polycondensation (ngokusebenzisa i-cation introduced ring-opening polymerization) ibe yi-polytetramethylene ether glycol (PTMEG), eyaziwa ngokuba yi-tetrahydrofuran homopolymerization ether. I-PTMEG kunye ne-toluene diisocyanate (TDI) zenziwe ngeerabha ezimelana nokukrala, ezimelana neoyile, ezisebenza ngobushushu obuphantsi, ezinamandla aphezulu; kunye ne-dimethyl terephthalate kunye ne-1,4-butanediol ezenziwe ngezinto ze-polyester elastomer ze-block polyether. Ubunzima be-molecular ye-PTT yi-2,000. Ubunzima beemolekyuli ze-PTMEG ezingama-2000 kunye ne-p-methylene bis (4-phenyl) diisocyanate (MDI) ezenziwe ngeefayibha ze-polyurethane elastic (spandex, SPANDEX fiber), iirabha ezikhethekileyo kunye nezinye izinto ezikhethekileyo zokugquma. I-THF yeyona nto ibalulekileyo isetyenziselwa ukuvelisa i-PTMEG, ngokwezibalo ezirhabaxa, ngaphezulu kwe-80% ye-THF yehlabathi isetyenziselwa ukuvelisa i-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG, kunye ne-PTMEG. I-PTMEG, kunye ne-PTMEG zisetyenziselwa kakhulu ukuvelisa iifayibha ze-spandex elastic.
2. I-solvent esebenza kakuhle kakhulu i-tetrahydrofuran sisinyibilikisi esisetyenziswa kakhulu, ngakumbi ekunyibilikiseni i-PVC, i-polyvinylidene chloride kunye ne-butylaniline, esetyenziswa kakhulu njengesinyibilikisi sokufaka izinto eziphezu komhlaba, izinto ezithintela ukubola, ii-inki zokuprinta, ii-tapes kunye nee-film coating ze-electro-Chemicalbook Aluminium Plating Liquid inokulawula ngokungakhethiyo ubukhulu be-aluminium kunye nokuKhanya. I-Magnetic tape coating, i-PVC surface coating, ukucoca i-PVC reactor, ukususa ifilimu ye-PVC, i-cellophane coating, i-plastic printing i-inki, i-thermoplastic polyurethane coating, izinyibilikisi ze-adhesives, ezisetyenziswa kakhulu kwii-surface coating, ii-protective coating, ii-inki, ii-extractants kunye nee-arhente zonyango lomphezulu wesikhumba esenziwe ngokwenziwa.
3. Isetyenziswa njengezinto eziluhlaza zokwenza izinto eziphilayo ezifana namayeza asetyenziswa ekuveliseni i-tetrahydrothiophene, 1.4 - dichloroethane, 2.3 Isetyenziswa ukuvelisa i-tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyrolactone kunye ne-pyrrolidone. Kwishishini lamayeza, isetyenziselwa ukwenziwa kwekhohlela, i-Rifamycin, i-progesterone kunye namanye amayeza e-hormone. I-Tetrahydrothiophenol iveliswa ngonyango lwe-hydrogen sulfide, enokusetyenziswa njengevumba elimnandi kwigesi yamafutha (izongezo zokuchonga), kwaye ikwayisombululo esiphambili kwishishini lamayeza.
4. Ezinye iindlela zokusetyenziswa: I-chromatographic solvent (i-gel permeation chromatography), esetyenziselwa ukunambitha igesi yendalo, i-solvent yokukhupha i-acetylene, kunye neziqinisi zokukhanya kwizixhobo zepolymer. Ngokusetyenziswa ngokubanzi kwe-tetrahydrofuran, ingakumbi ukukhula ngokukhawuleza kweshishini le-spandex laseTshayina kwiminyaka yakutshanje, okwenza imfuno yaseTshayina ye-PTMEG iyanda, kwaye imfuno ebangelwa yi-tetrahydrofuran nayo ikhula ngokukhawuleza.
Ukupakishwa kunye nokuthunyelwa
180KG/Idrama okanye ngokweemfuno zomthengi.
Ingahanjiswa ngolwandle nangomoya
Gcina kwaye ugcine
Ixesha lokuphelelwa: Iinyanga ezingama-24 ukususela kumhla wokwenziwa kwayo kwiphakheji yokuqala engavulwanga igcinwe kwindawo epholileyo neyomileyo kude nelanga elithe ngqo, amanzi.
Indawo yokugcina umoya, Ukomisa kubushushu obuphantsi, Yahlulwe kwii-oxidants, ii-asidi.
