Tetrahydrofuran

Tetrahydrofuran, mu magambo ahinnye ya THF, ni imvange y’umwimerere ihinduka heterocyclic. Iri mu cyiciro cya ether, ni imvange y’aroma ivanze na hydrogenation yuzuye ya furan.

Tetrahydrofuran ni imwe muri ether zikomeye cyane zo mu bwoko bwa polar. Ikoreshwa nk'umusemburo w'ubushyuhe buciriritse mu gukora no gukuramo ibintu. Ni amazi adafite ibara ahinduka mu bushyuhe bw'icyumba kandi afite impumuro nk'iya ether. Ishobora gushonga mu mazi, etanoli, ether, acetone, Chemicalbook benzene n'ibindi bintu byinshi bikomoka ku bimera, bizwi nka "solvent universal". Mu bushyuhe bw'icyumba n'amazi bishobora kuvanga igice, hari ubucuruzi bunyuranyije n'amategeko bukoresha iyi ngingo mu gukora poroteyine ya tetrahydrofuran mu mazi. Kubera ko THF ikunda gukora peroxide mu bubiko, BHT irwanya antioxidant ikunze kongerwa mu bicuruzwa by'inganda. Ubushuhe ≦0.2%. Ifite imiterere y'uburozi buke, ubushyuhe buke no kuzura neza.

Imiterere y'ibinyabutabire:amazi adafite ibara, afite impumuro ya eteri. Avanze n'amazi, alcool, ketone, benzene, ester, eteri, na hydrocarbon.

Porogaramu z'ingenzi:

1. Ibikoresho fatizo bya spandex synthesis reaction:

Tetrahydrofuran ubwayo ishobora kuba polycondensation (by cationic ring-opening repolymerization) muri polytetramethylene ether diol (PTMEG), izwi kandi nka tetrahydrofuran homopolyl. PTMEG na toluene diisocyanate (TDI) bikozwe mu buryo bwo kudashira, kudashira amavuta, ubushyuhe buke, imbaraga nyinshi za rubber yihariye; Ibikoresho bya polyester elastic bya Block polyester byateguwe hamwe na dimethyl terephthalate na 1, 4-butanediol. PTMEG ifite uburemere bwa molekile bwa 2000 na p-methylene bis (4-phenyl) diisocyanate (MDI) kugira ngo ikore fibre elastic ya polyurethane (SSPANDEX fiber), rubber yihariye n'ibikoresho fatizo byihariye. Ikoreshwa ry'ingenzi rya THF ni mu gukora PTMEG. Dukurikije imibare isanzwe, hafi 80% bya THF ku isi yose ikoreshwa mu gukora PTMEG, naho PTMEG ikoreshwa cyane mu gukora fibre ya spandex.

2. Gushongesha ibintu bifite imikorere myiza cyane:

Tetrahydrofuran ni umuti mwiza ukoreshwa cyane, cyane cyane ukoreshwa mu gushonga PVC, polyvinylidene chloride na butyl aniline, ukoreshwa cyane nk'umuti wo gusiga hejuru, umuti urinda kwangirika, wino yo gucapa, umuti wo gusiga kaseti na firime, hamwe na Chemicalbook mu gukoresha electroplating aluminiyumu amazi ashobora kugenzura ubugari bw'urwego rwa aluminiyumu n'ubushyuhe. Umuti wo gusiga hejuru, umuti wo gusiga hejuru wa PVC, gusukura reactor ya PVC, gukuraho firime ya PVC, umuti wo gusiga cellophane, wino yo gucapa ya pulasitiki, umuti wo gusiga polyurethane, kole, ukoreshwa cyane mu gusiga hejuru, umuti wo kurinda, wino, ibikoresho byo gusiga n'ibikoresho byo gutunganya hejuru ku ruhu rw'ubukorano.

3. Ikoreshwa nk'ibikoresho fatizo byo gukora imvange y'ibinyabuzima nk'imiti:

Mu gukora tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone na pyrrolidone. Mu nganda zikora imiti, ikoreshwa mu gukora coughbixin, rifumycin, progesterone n'imiti imwe n'imwe ikoreshwa mu misemburo. Tetrahydrothiophenol ikorwa binyuze mu kuvura hidrojeni sulfide, ishobora gukoreshwa nk'impumuro mbi mu mwuka w'ibikomoka kuri peteroli (inyongeramusaruro), kandi ni na yo mvaruganda ikomeye mu nganda zikora imiti.

4. Izindi Ngaruka:

Umusemburo wa chromatografiya (gel permeation chromatography), ukoreshwa mu kuryoha gazi karemano, umusemburo wo gukuramo acetylene, umusemburo uhoraho w’ibikoresho bya polymer, nibindi. Bitewe n’ikoreshwa rya tetrahydrofuran, cyane cyane mu myaka ya vuba aha, iterambere ryihuse ry’inganda za polyurethane, ubwiyongere bwa PTMEG mu gihugu cyacu buriyongera, kandi ubwiyongere bw’umusemburo wa tetrahydrofuran nabwo bugaragaza ko hari iterambere ryihuse.

Akaga:Tetrahydrofuran iri mu bwoko bwa 3.1 bushobora gushya bufite aho bunyura hato, bushobora gushya cyane, umwuka ushobora gukora imvange iturika n'umwuka, aho guturika ntarengwa ni 1.5% ~ 12% (igice cy'ingano), hamwe n'ubushyuhe. Imiterere yayo ishobora gushya cyane nayo ni ikibazo cy'umutekano. Ikibazo gikomeye cy'umutekano kuri THFS ni ukwirema buhoro kwa peroxide organic iturika cyane iyo ihuye n'umwuka. Kugira ngo bigabanye ibi byago, THFS igurishwa ku isoko akenshi yongerwamo 2, 6-di-tert-butylp-cresol (BHT) kugira ngo ihagarike ikorwa rya peroxide organic. Muri icyo gihe, THF ntigomba kuma kuko peroxide organic izaba yiganje mu bisigazwa by'amazi.

Ingamba zo kwirinda mu mikorere:Gukorera mu buryo bufunze, guhumeka neza. Abakoresha bagomba kuba barahuguwe by'umwihariko kandi bakubahiriza amabwiriza y'imikorere. Ni byiza ko abakoresha bambara agapfukamunwa gafite ubwoko bwa gaze (agapfukamunwa k'igice cy'umupfukamunwa), indorerwamo zo kwirinda impanuka, imyenda irinda imihindagurikire y'ikirere, n'uturindantoki twa peteroli. Bika kure y'umuriro, aho ubushyuhe buturuka, nta kunywa itabi mu kazi. Koresha uburyo n'ibikoresho by'umwuka bidaturika. Irinde umwuka usohoka mu kirere cy'akazi. Irinde ko byagera kuri ogisijeni, aside n'ibice by'ishingiro. Umuvuduko w'amazi ukwiye kugenzurwa mu gihe cyo kuzura, kandi hagomba kubaho igikoresho gifunga kugira ngo hirindwe ko amashanyarazi yiyongera. Mu gihe cyo gukora, gupakira no gupakurura ibintu byoroheje bigomba gukorwa kugira ngo hirindwe kwangirika kw'ibipfunyika n'ibikoresho. Bifite ubwoko n'ingano y'ibikoresho by'umuriro n'ibikoresho byo kwivuza byihutirwa. Agapfukamunwa karimo ubusa gashobora kuba karimo ibisigazwa byangiza.

Ibipimo byo kwirinda kubika:Ubusanzwe ibicuruzwa bifite ikintu kibuza. Bika mu bubiko bukonje kandi bufite umwuka uhumeka. Bika kure y'umuriro n'ubushyuhe. Ubushyuhe bw'ububiko ntibugomba kurenga 30°C. Ipaki igomba kuba ifunze kandi ntihure n'umwuka. Igomba kubikwa ukwayo n'ibisigazwa, aside n'ibice by'ishingiro, kandi ntigomba kuvangwa. Amatara n'ibikoresho by'umwuka bidaturika birakoreshwa. Ntugakoreshe ibikoresho bya mekanike n'ibikoresho bishobora kwangiza. Ahabikwa hagomba kuba hari ibikoresho byo kuvurwa byihutirwa n'ibikoresho bikwiye byo gufata.

Pakingi: 180KG/ingoma