Tetrahydrofuran

Tetrahydrofuran, taƙaice THF, shi ne heterocyclic kwayoyin fili.Nasa ne na ajin ether, shine kayan kamshi na furotin cikakke samfurin hydrogenation.

Tetrahydrofuran yana ɗaya daga cikin ethers mafi ƙarfi.Ana amfani da shi azaman matsakaicin iyakacin duniya ƙarfi a cikin halayen sinadaran da hakar.Ruwa ne mara launi a zafin jiki kuma yana da wari kama da ether.Mai narkewa a cikin ruwa, ethanol, ether, acetone, Chemicalbook benzene da sauran mafi yawan kaushi na kwayoyin halitta, wanda aka sani da "ƙawanin duniya".A dakin da zafin jiki da ruwa na iya zama partan miscible, wasu haram reagent kasuwanci ne don amfani da wannan batu zuwa tetrahydrofuran reagent ruwa riba.Saboda dabi'ar THF don samar da peroxides a cikin ajiya, ana ƙara BHT antioxidant zuwa samfuran masana'antu.Danshi abun ciki ≦0.2%.Yana da halaye na ƙananan ƙwayar cuta, ƙarancin tafasa da kuma ruwa mai kyau.

Abubuwan sinadarai:ruwa mai haske mara launi, tare da kamshin ether.Haɗe da ruwa, barasa, ketone, benzene, ester, ether, da hydrocarbons.

Manyan aikace-aikace:

1. Raw kayan aikin spandex kira:

Tetrahydrofuran kanta na iya zama polycondensation (ta hanyar cationic ring-bude repolymerization) cikin polytetramethylene ether diol (PTMEG), wanda kuma aka sani da tetrahydrofuran homopolyl.PTMEG da toluene diisocyanate (TDI) da aka yi da juriya na lalacewa, juriyar mai, ƙarancin zafin jiki, ƙarfin ƙarfin roba na musamman;Block polyester polyester kayan roba an shirya shi tare da dimethyl terephthalate da 1, 4-butanediol.PTMEG tare da zumunta kwayoyin nauyi na 2000 da p-methylene bis (4-phenyl) diisocyanate (MDI) don yin polyurethane roba fiber (SPANDEX fiber), musamman roba da kuma wasu musamman manufa shafi albarkatun kasa.Mafi mahimmancin amfani da THF shine don samar da PTMEG.Dangane da m statistics, game da 80% na duniya THF ake amfani da samar da PTMEG, kuma PTMEG ne yafi amfani da samar da spandex fiber.

2. Mai narkewa tare da kyakkyawan aiki:

Tetrahydrofuran ne mafi amfani da kyau kwarai sauran ƙarfi, musamman dace da narkar da PVC, polyvinylidene chloride da butyl aniline, yadu amfani da surface shafi, anticorrosive shafi, bugu tawada, tef da kuma film shafi sauran ƙarfi, tare da Chemicalbook a electroplating aluminum ruwa na iya zama sabani iko na aluminum. Layer kauri da haske.Narkewa ga tef shafi, PVC surface shafi, tsaftacewa PVC reactor, cire PVC fim, cellophane shafi, roba bugu tawada, thermoplastic polyurethane shafi, m, fiye amfani da surface coatings, m coatings, tawada, extractants da surface jiyya jamiái ga roba fata.

3. An yi amfani da shi azaman albarkatun ƙasa don haɓakar kwayoyin halitta kamar magunguna:

Don samar da tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyl lactone da pyrrolidone.A cikin masana'antar harhada magunguna, ana amfani dashi a cikin haɗakar tari, rifumycin, progesterone da wasu magungunan hormone.Tetrahydrothiophenol an samar da shi ta hanyar maganin hydrogen sulfide, wanda za'a iya amfani dashi azaman wakili na wari a cikin iskar gas (ƙarin ganowa), kuma shine babban ƙarfi a cikin masana'antar harhada magunguna.

4. Sauran Amfani:

Chromatographic sauran ƙarfi (gel permeation chromatography), amfani da na halitta gas dandano, acetylene hakar sauran ƙarfi, polymer abu haske stabilizer, da dai sauransu Tare da fadi da aikace-aikace na tetrahydrofuran, musamman a cikin 'yan shekarun nan, da m girma na polyurethane masana'antu, da bukatar PTMEG a cikin mu. Kasar tana karuwa, kuma buƙatun tetrahydrofuran kuma yana nuna saurin bunƙasa.

Hadari:Tetrahydrofuran na cikin nau'in 3.1 mai ƙonewa mai ƙonawa tare da ƙaramin walƙiya, mai tsananin ƙonewa, tururi na iya haifar da cakuda fashewa tare da iska, iyakar fashewa shine 1.5% ~ 12% (ƙarashin juzu'i), tare da haushi.Yanayinsa mai saurin ƙonewa shima haɗari ne na aminci.Babban damuwa na aminci tare da THFS shine jinkirin samuwar peroxides masu fashewa sosai lokacin da aka fallasa su zuwa iska.Don rage wannan haɗari, ana samun THFS na kasuwanci sau da yawa tare da 2, 6-di-tert-butylp-cresol (BHT) don hana samar da peroxides na kwayoyin halitta.A lokaci guda, THF bai kamata a bushe ba saboda kwayoyin peroxides za a mayar da hankali a cikin ragowar distillation.

Kariyar aiki:rufaffiyar aiki, cikakken samun iska.Dole ne masu aiki su kasance masu horarwa na musamman kuma su bi ƙa'idodin aiki sosai.Ana ba da shawarar masu aiki su sanya abin rufe fuska nau'in tace gas (rabin abin rufe fuska), gilashin tsaro, tufafin da ba su da ƙarfi, da safar hannu masu jure mai na roba.Ka nisanta daga wuta, tushen zafi, babu shan taba a wurin aiki.Yi amfani da tsarin iska da kayan aiki masu hana fashewa.Hana tururi daga tserewa zuwa iskar wurin aiki.Kauce wa lamba tare da oxidants, acid da tushe.Yakamata a sarrafa adadin kwarara yayin cikawa, kuma yakamata a sami na'urar saukar da ƙasa don hana tarin electrostatic.Lokacin da ake sarrafawa, ya kamata a yi lodin haske da saukewa don hana lalacewa ga marufi da kwantena.An sanye shi da nau'i-nau'i iri-iri da adadin kayan wuta da kayan aikin jinya na gaggawa.Kwancen fanko na iya ƙunsar rago mai cutarwa.

Kariyar ajiya:Yawancin lokaci kayan yana da mai hanawa.Ajiye a cikin ɗakin ajiya mai sanyi, mai iska.Ka nisantar da wuta da zafi.Zazzabi na sito kada ya wuce 30 ℃.Ya kamata a rufe kunshin kuma kada a haɗa da iska.Ya kamata a adana shi daban daga oxidizers, acid da tushe, kuma kada a haɗa shi.An karɓi hasken da ba zai iya fashewa da wuraren samun iska.Kada a yi amfani da kayan aikin inji da kayan aikin da ke da saurin walƙiya.Wurin ajiya ya kamata a sanye shi da kayan aikin jinya na gaggawa da kayan riƙewa masu dacewa.

Marufi: 180KG/Drum