Tetrahydrofuran
Ingoa Ingarihi: THF; oxolane; Butane, alpha, delta-oxide; Cyclotetramethylene waikura; Diethylene oxide; Furan, tetrahydro-; Furanidine; 1, 2, 3, 4 – tetrahydro – 9 h – fluoren – 9 – kotahi
CAS no. : 109-99-9
EINECS no. : 203-726-8
tātai rāpoi: C4H8O
Te taumaha ngota: 184.2338
InChI: InChI = 1 / C13H12O/c14-13-11-7-13-11-7-9 (11) 10-6-2-10-6-2 (10) 13 / h1, 3, 5, 7 H , 2,4,6,8 H2
Hanganga ngota: Tetrahydrofuran 109-99-9
Kiato: 1.17 g/cm3
Ira whakarewa: 108.4 ℃
Kohuatanga: 343.2°C i te 760 mmHg
Kohiko: 150.7 ° C
Te wairewa: Miscible
Te pehanga mamaoa: 7.15E-05mmHg i te 25°C
Āhuatanga ā-tinana me te matū:
He wai marama kore tae, he haunga ether.
Te ira koropuha o te 67 ℃
Ira mīti – 108 ℃
Kiato whanaunga 0.985
Ko te taupū whakaata o 1.4050
Ira hiko – 17 ℃
Ka uru te wairewa ki te wai, te waipiro, te ketone, te benzene, te ester, te etera, te waiwaro.
Whakamahi Hua:
Whakamahia hei whakarewa me te rauemi mata mo te whakahiato waro

Tetrahydrofuran, whakapoto THF, he pūhui waro heterocyclic. No roto i te roopu ether, a ko te hua hauwaitanga katoa o te furan pūhui kakara. Ko Tetrahydrofuran tetahi o nga ether polar tino kaha. Ka whakamahia hei whakarewa polar reo i roto i te tauhohenga matū me te tangohanga. He wai karekau he tae i te pāmahana rūma, he rite te kakara ki te diethyl ether. Wairewa i roto i te wai, waiwaro, etera, acetone, Chemicalbook benzene me etahi atu whakarewa waro, e mohiotia ana ko te "whakarewa ao". Ka taea te whakauru ki te wai i te pāmahana rūma, na reira ka whai hua nui etahi kaihoko reagent ture ma te whakaranu i te reagent tetrahydrofuran ki te wai. I te mea ko te THF te hanga peroxides i roto i te rokiroki, ka taapirihia te BHT antioxidant ki nga hua ahumahi. He iti iho i te 0.2%. Kei a ia nga ahuatanga o te paitini iti, te ira koropuke iti me te wai pai.
I tenei wa, ko nga kaihanga nui o te whare o te tetrahydrofuran ko te BASF China, Dalian Yizheng (DCJ), Shanxi Sanwei, Sinochem International, me te Petrochina Qianguo Refinery, me etahi atu, me etahi atu tipu PBT ka whakaputa i tetahi waahanga o nga hua-hua. Ko nga tohu hokohoko a LyondellBasell Industries i te United States me Europe ko: te pure 99.90%Chemicalbook, te chroma (APHA) 10, te makuku 0.03%, te THF hydroperoxide 0.005%, te poke katoa 0.05%, me te aukati waikura 0.025% ~ 0.025%. I roto i te ahumahi polyurethane, ko te whakamahinga tino nui hei taonga monomer mo te polytetrahydrofuranediol (PTMEG), koinei hoki tetahi o nga whakamahinga matua o te THF.

Mahinga matua:
Ko te kaupapa matua
1. Ko te rauemi mata o te kōtuitanga o te polyurethane muka tetrahydrofuran ka taea te polycondensation (cationic kōkiri whakakai-whakatuwhera repolymerization) ki polytetramethylene ether diol (PTMEG), mohiotia hoki tetrahydrofuran homopolyether. Ko te PTMEG me te TOLuene diisocyanate (TDI) ka hangaia hei rapa motuhake me te pai o te kakahu, te aukati hinu, te mahi iti o te pāmahana me te kaha nui. I whakaritea te polyether polyester elastomer me te dimethyl terephthalate me te 1, 4-butanediol. Ko nga muka elastic polyurethane (SPANDEX, SPANDEX), he rapa motuhake me etahi whakakikorua kaupapa motuhake ka mahia mai i te 2000 PTMEG me te p-methylene bis (4-phenyl) diisocyanate (MDI). Ko te whakamahinga nui o te THF ko te whakaputa PTMEG. E ai ki nga tatauranga taratara, neke atu i te 80% o te THF i te ao e whakamahia ana ki te whakaputa PTMEG, ko te PTMEG te nuinga e whakamahia ana hei whakaputa i te muka spandex elastic.
2. Ko te Tetrahydrofuran he whakarewa pai e whakamahia nuitia ana, he pai rawa mo te whakakore i te PVC, te polyvinylidene chloride me te butaniline. Ka whakamahia nuitia hei whakarewa mo te paninga mata, te paninga anti-corrosion, te waituhi ta, te riipene autō me te paninga kiriata. Te paninga rīpene autō, te whakakikorua o te mata o te PVC, TE WHAKAMAHI i te reactor PVC, te tango i te kiriata PVC, te paninga cellophane, te waituhi ta kirihou, te whakakikorua o te polyurethane thermoplastic, te whakarewa mo te whakapiri, e whakamahia nuitia ana i roto i nga paninga mata, nga paninga tiaki, nga waituhi, nga tangohanga me nga kaihoko hiako hiako whakaoti. .
3. Ka whakamahia hei rauemi mata mo te whakahiato waro penei i te rongoa mo te hanga tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, pentolactone, butyllactone me te pyrrolidone, me era atu. progesterone me etahi raau taero hormonal. Ko te Tetrahydrothiophenol, e hangaia ana e te maimoatanga hauwai sulfide, ka taea te whakamahi hei kaihoko kakara (tohu taapiri) i roto i te hau wahie, a ko ia ano te whakarewa matua i roto i te umanga rongoa.
4. Ko etahi atu whakamahinga o te whakarewa chromatographic (gel permeation chromatography), ka whakamahia mo te reka o te hau maori, te whakarewa tangohanga acetylene, nga rauemi polymer, penei i te whakapumau marama. Na te whanuitanga o te whakamahinga o te tetrahydrofuran, ina koa ko te tipu tere o te ahumahi spandex i Haina i nga tau kua pahure ake nei, kei te piki haere te tono mo te PTMEG i Haina i ia ra, i ia ra, a ko te tono mo te tetrahydrofuran e whakaatu ana i te tipu tere.