Tetrahydrofuran

Tetrahydrofuran, mu magambo ahinnye ya THF, ni heterocyclic organic compound. Biri murwego rwa ether, ni aromatic compound furan yuzuye ibicuruzwa bya hydrogenation.

Tetrahydrofuran ni imwe mu nkingi zikomeye za polar. Ikoreshwa nkigikoresho giciriritse giciriritse mugukora imiti no kuyikuramo. Nibintu bitagira ibara bihindagurika mubushyuhe bwicyumba kandi bifite impumuro isa na ether. Gushonga mumazi, Ethanol, ether, acetone, Chemical Book benzene nibindi byangiza umubiri, bizwi nka "solvent rusange". Ku bushyuhe bwicyumba n’amazi birashobora kutumvikana igice, ubucuruzi bumwebumwe butemewe nugukoresha iyi ngingo kugirango tetrahydrofuran reagent yunguka amazi. Kubera imyumvire ya THF yo gukora peroxide mububiko, antioxydeant BHT ikunze kongerwa mubicuruzwa byinganda. Ibirungo ≦ 0.2%. Ifite ibiranga uburozi buke, ahantu hatetse no gutemba neza.

Ibikoresho bya shimi:ibara ritagira ibara risukuye, hamwe na ether impumuro nziza. Kuvangwa n'amazi, inzoga, ketone, benzene, ester, ether, na hydrocarbone.

Porogaramu nyamukuru:

1. Ibikoresho bibisi bya spandex synthesis reaction:

Tetrahydrofuran ubwayo irashobora kuba polycondensation (ukoresheje cationic ring-gufungura repolymerisation) muri polytetramethylene ether diol (PTMEG), izwi kandi nka tetrahydrofuran homopolyl. PTMEG na toluene diisocyanate (TDI) ikozwe mukurwanya kwambara, kurwanya amavuta, gukora ubushyuhe buke, imbaraga nyinshi za reberi idasanzwe; Hagarika polyether polyester elastike ibikoresho byateguwe hamwe na dimethyl terephthalate na 1, 4-butanediol. PTMEG ifite uburemere bugereranije bwa 2000 na p-methylene bis (4-fenyl) diisocyanate (MDI) kugirango ikore fibre fibre polyurethane (fibre SPANDEX), reberi idasanzwe hamwe nintego yihariye yo gutwikira ibikoresho fatizo. Ikoreshwa ryingenzi rya THF ni kubyara PTMEG. Dukurikije imibare ikabije, hafi 80% ya THF kwisi yose ikoreshwa mugukora PTMEG, naho PTMEG ikoreshwa cyane mugukora fibre spandex.

2. Gukemura hamwe nibikorwa byiza:

Tetrahydrofuran nikintu gikunze gukoreshwa cyane, gishobora gukoreshwa cyane cyane mu gushonga PVC, polyvinylidene chloride na butyl aniline, ikoreshwa cyane nko gutwikira hejuru, gutwikira anticorrosive, gucapa wino, kaseti hamwe no gufunga firime, hamwe na Chemical Book mumashanyarazi ya aluminiyumu irashobora kugenzura uko ubyibushye bwa aluminiyumu kandi bikayangana. Umuti wo gufata kaseti, gutwikira hejuru ya PVC, gusukura reaction ya PVC, kuvanaho firime ya PVC, gutwika selile ya selile, wino yo gucapisha plastike, gutwika polimurethane polyurethane, gufatira hamwe, gukoreshwa cyane mubitambaro byo hejuru, gutwikira kurinda, wino, ibiyikuramo hamwe nubushakashatsi bwo kuvura uruhu rwubukorikori.

3. Ikoreshwa nkibikoresho fatizo bya synthesis organique nka farumasi:

Kubyara umusaruro wa tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone na pyrrolidone. Mu nganda zimiti, ikoreshwa muguhuza coughbixin, rifumycin, progesterone hamwe nibiyobyabwenge bya hormone. Tetrahydrothiophenol ikorwa no kuvura hydrogène sulfide, ishobora gukoreshwa nk'umunuko wa gaze ya lisansi (inyongeramusaruro), kandi ikaba n'umuti nyamukuru mu nganda zimiti.

4. Ubundi buryo bukoreshwa:

Chromatographic solvent (gel permeation chromatografiya), ikoreshwa muburyohe bwa gazi karemano, gukuramo acetylene, gukuramo polymer yumucyo, nibindi. Hamwe nogukoresha kwinshi kwa tetrahydrofuran, cyane cyane mumyaka yashize, iterambere ryihuse ryinganda za polyurethane, icyifuzo cya PTMEG mugihugu cyacu kiriyongera, kandi icyifuzo cya tetrahydrofuran nacyo cyerekana ko iterambere ryihuta.

Akaga:Tetrahydrofuran iri mu cyiciro cya 3.1 cyamazi yaka umuriro hamwe na flash point nkeya, yaka cyane, imyuka irashobora gukora imvange iturika hamwe numwuka, imipaka iturika ni 1.5% ~ 12% (agace k'ubunini), hamwe no kurakara. Kamere yaka cyane nayo ishobora guhungabanya umutekano. Ikibazo gikomeye cyumutekano hamwe na THFS nugukora buhoro buhoro peroxide kama iturika cyane iyo ihuye numwuka. Kugira ngo ugabanye ibi byago, ubucuruzi buboneka THFS akenshi bwuzuzwa na 2, 6-di-tert-butylp-cresol (BHT) kugirango babuze umusaruro wa peroxide kama. Mugihe kimwe, THF ntigomba gukama kuko peroxide kama izibanda mubisigazwa bya distillation.

Ibikorwa byo kwirinda:ibikorwa bifunze, guhumeka neza. Abakora bagomba gutozwa byumwihariko kandi bakubahiriza byimazeyo imikorere. Birasabwa ko abashoramari bambara mask yo mu bwoko bwa gaz mask (igice cya mask), ibirahure birinda umutekano, imyenda irwanya static, hamwe na gants zidashobora kwihanganira amavuta. Irinde umuriro, isoko yubushyuhe, nta kunywa itabi mukazi. Koresha sisitemu yo guhumeka n'ibikoresho. Irinde amavuta guhungira mu kirere cyakazi. Irinde guhura na okiside, acide na base. Igipimo cyo gutembera kigomba kugenzurwa mugihe cyo kuzuza, kandi hagomba kubaho igikoresho cyo guhagarara kugirango wirinde gukwirakwiza amashanyarazi. Mugihe gikora, gupakira urumuri no gupakurura bigomba gukorwa kugirango hirindwe kwangirika no gupakira. Ibikoresho bitandukanye nubwinshi bwibikoresho byumuriro nibikoresho byihutirwa byihutirwa. Igikoresho kirimo ubusa gishobora kuba kirimo ibisigisigi byangiza.

Uburyo bwo kubika:Mubisanzwe ibicuruzwa bifite inhibitor. Ubike mu bubiko bukonje, buhumeka. Irinde umuriro n'ubushyuhe. Ubushyuhe bwububiko ntibugomba kurenga 30 ℃. Ipaki igomba gufungwa kandi ntabwo ihuye numwuka. Igomba kubikwa ukwayo na okiside, acide na base, kandi ntigomba kuvangwa. Ibikoresho biturika biturika kandi bihumeka. Ntukoreshe ibikoresho bya mashini nibikoresho bikunda kugaragara. Ahantu ho guhunika hagomba kuba hafite ibikoresho byo kuvura byihutirwa nibikoresho bifatika.

Gupakira: 180KG / ingoma