Tetrahydrofuran

Tetrahydrofuran, nke a kpọrọ THF, bụ ihe mejupụtara heterocyclic organic. Ọ bụ nke otu ether, ọ bụkwa ngwaahịa na-esi ísì ụtọ nke furan zuru oke nke hydrogenation.

Tetrahydrofuran bụ otu n'ime polar ethers kachasị ike. A na-eji ya dị ka ihe mgbaze polar dị n'etiti na mmeghachi omume kemịkalụ na mwepụta. Ọ bụ mmiri na-adịghị agbanwe agbanwe na okpomọkụ ụlọ ma nwee isi yiri ether. A na-agbaze na mmiri, ethanol, ether, acetone, Chemicalbook benzene na ihe mgbaze organic ndị ọzọ, nke a maara dị ka "ihe mgbaze zuru ụwa ọnụ". N'ọnọdụ okpomọkụ ụlọ na mmiri enwere ike ịgbaze n'akụkụ, ụfọdụ ihe mgbochi iwu na-akwadoghị bụ iji ebe a mee ihe iji nweta mmiri tetrahydrofuran reagent. N'ihi na THF na-emepụta peroxides na nchekwa, a na-agbakwụnyekarị ihe mgbochi BHT na ngwaahịa ụlọ ọrụ mmepụta ihe. Ọdịnaya mmiri ≦0.2%. O nwere njirimara nke obere nsí, obere ebe esi mmiri na ezigbo mmiri mmiri.

Njirimara kemịkalụ:mmiri mmiri na-enweghị agba, nwere isi ether. A gwakọtara ya na mmiri, mmanya, ketone, benzene, ester, ether, na hydrocarbons.

Ngwa ndị bụ isi:

1. Ihe ndị e ji mee mmeghachi omume spandex:

Tetrahydrofuran n'onwe ya nwere ike ịbụ polycondensation (site na cationic ring-opening repolymerization) ka ọ bụrụ polytetramethylene ether diol (PTMEG), nke a makwaara dị ka tetrahydrofuran homopolyl. PTMEG na toluene diisocyanate (TDI) nke ejiri ike iyi, iguzogide mmanụ, arụmọrụ okpomọkụ dị ala, ike dị elu nke roba pụrụ iche mee; Ejiri dimethyl terephthalate na 1, 4-butanediol kwadebe ihe polyester polyether elastic material nke Block polyether. PTMEG nwere oke molekul nke 2000 na p-methylene bis (4-phenyl) diisocyanate (MDI) mee polyurethane elastic fiber (SPANDEX fiber), roba pụrụ iche na ihe mkpuchi pụrụ iche. Ojiji kachasị mkpa nke THF bụ maka mmepụta nke PTMEG. Dịka ọnụ ọgụgụ siri ike si kwuo, a na-eji ihe dị ka 80% nke THF zuru ụwa ọnụ maka mmepụta nke PTMEG, a na-ejikwa PTMEG eme ihe maka mmepụta nke spandex fiber.

2. Ihe mgbaze nwere arụmọrụ dị mma:

Tetrahydrofuran bụ ihe mgbaze dị mma a na-ejikarị eme ihe, nke kachasị mma maka ịgbaze PVC, polyvinylidene chloride na butyl aniline, nke a na-ejikarị eme ihe dị ka mkpuchi elu, mkpuchi mgbochi corrosive, ink mbipụta, teepu na ihe mgbaze ihe nkiri, yana Chemicalbook na electroplating mmiri aluminom nwere ike ịbụ njikwa nke ọkpụrụkpụ oyi akwa aluminom na-enweghị atụ ma na-egbuke egbuke. Ihe mgbaze maka mkpuchi teepu, mkpuchi elu PVC, nhicha ihe na-eme ka PVC dị ọcha, iwepụ ihe nkiri PVC, mkpuchi cellophane, ink mbipụta plastik, mkpuchi polyurethane thermoplastic, gluu, nke a na-ejikarị eme ihe na mkpuchi elu, mkpuchi nchebe, ink, ihe ndị na-ewepụta ihe na ihe ndị na-agwọ elu maka akpụkpọ anụ sịntetik.

3. A na-eji ya eme ihe dịka ihe eji emepụta ihe ndị sitere n'okike dịka ọgwụ:

Maka mmepụta nke tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone na pyrrolidone. N'ime ụlọ ọrụ ọgwụ, a na-eji ya eme ihe na mmepụta nke coughbixin, rifumycin, progesterone na ụfọdụ ọgwụ homonụ. A na-emepụta Tetrahydrothiophenol site na ọgwụgwọ hydrogen sulfide, nke enwere ike iji dị ka ihe na-esi ísì ụtọ na gas mmanụ (ihe mgbakwunye njirimara), ọ bụkwa ihe mgbaze bụ isi na ụlọ ọrụ ọgwụ.

4. Ojiji Ndị Ọzọ:

Ihe mgbaze chromatographic (gel permeation chromatography), nke e ji eme ihe maka ụtọ gas eke, ihe mgbaze acetylene, ihe na-eme ka ọkụ na-eguzosi ike n'ihe nke ihe polymer, wdg. Site na itinye tetrahydrofuran n'ọtụtụ ebe, karịsịa n'afọ ndị na-adịbeghị anya, mmụba ngwa ngwa nke ụlọ ọrụ polyurethane, ọchịchọ maka PTMEG na mba anyị na-amụba, ọchịchọ maka tetrahydrofuran na-egosikwa usoro uto ngwa ngwa.

Ihe egwu:Tetrahydrofuran so na mmiri ọkụ nke klas 3.1 nwere obere ebe ọkụ, ọ na-ere ọkụ nke ukwuu, uzuoku nwere ike ịmepụta ngwakọta mgbawa na ikuku, oke mgbawa bụ 1.5% ~ 12% (ngalaba olu), yana iwe. Ọdịdị ya nke ọkụ na-ere nke ukwuu bụkwa ihe egwu nchekwa. Nchegbu nchekwa kachasị na THFS bụ mmepụta nwayọ nke peroxide organic na-agbawa agbawa mgbe a na-ekpughe ya na ikuku. Iji belata ihe egwu a, a na-agbakwunye THFS nke dị n'ahịa na 2, 6-di-tert-butylp-cresol (BHT) iji gbochie mmepụta nke peroxide organic. N'otu oge ahụ, ekwesighi ịkpọ nkụ THF n'ihi na a ga-etinye peroxide organic n'ime ihe fọdụrụ na distillation.

Ihe mgbochi ọrụ:Ọrụ mechiri emechi, ikuku zuru oke. Ndị ọrụ ga-enwerịrị ọzụzụ pụrụ iche ma na-agbaso usoro ọrụ nke ọma. A na-atụ aro ka ndị ọrụ yi ihe mkpuchi gas dịka nzacha (ọkara ihe mkpuchi), iko nchekwa, uwe mgbochi static, na uwe aka roba na-eguzogide mmanụ. Debe ya ebe ọkụ, isi iyi okpomọkụ, anaghị ese anwụrụ n'ebe ọrụ. Jiri sistemụ na ngwa ikuku na-egbochi mgbawa. Gbochie uzuoku ịbanye n'ikuku ebe ọrụ. Zere ka ọ ghara imetụ ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe dị n'ime ya ghara imetụ ya aka. A ga-achịkwa ọsọ mmiri ahụ n'oge a na-ejupụta ya, e kwesịkwara inwe ngwaọrụ iji gbochie mkpokọta electrostatic. Mgbe a na-ejikwa ya, a ga-ebu ibu na ibu dị mfe iji gbochie mmebi na ngwugwu na akpa. Ejiri ụdị na ọnụọgụ nke ngwa ọkụ na ngwa ọgwụgwọ mberede na-agbapụta. Akpa efu nwere ike ịnwe ihe fọdụrụ na-emerụ ahụ.

Nchekwa nchekwa:Ọtụtụ mgbe, ngwaahịa a nwere ihe mgbochi. Debe ya n'ụlọ nkwakọba ihe dị jụụ ma nwee ikuku. Debe ya ebe ọkụ na okpomọkụ na-adịghị. Okpomọkụ nke ụlọ nkwakọba ihe ekwesịghị ịgafe 30℃. A ga-emechi ngwugwu ahụ ma ghara imetụ ikuku aka. A ga-echekwa ya iche na ihe na-eme ka oxidizers, asịd na ntọala dị iche iche, ekwesighikwa ịgwakọta ya. A na-eji ihe ọkụ na ikuku na-anaghị agbawa agbawa. Ejila ngwa igwe na ngwaọrụ ndị nwere ike ịgba ọkụ. Ebe nchekwa ahụ kwesịrị inwe ngwa ọgwụgwọ mberede na ihe ndị kwesịrị ekwesị maka ijide.

Nkwakọ ngwaahịa: 180KG/gbam