Tetrahydrofuran

TetrahydrofuranTHF, muchidimbu, imhando ye heterocyclic organic compound. Iri mukirasi ye ether, ndiyo aromatic compound furan compound complete hydrogenation product.

Tetrahydrofuran ndeimwe yepolar ethers dzakasimba. Inoshandiswa semusanganiswa wepakati wepolar mukuita kwemakemikari uye kubvisa. Imvura isina ruvara inoshanduka patembiricha yemumba uye ine hwema hwakafanana neether. Inonyungudika mumvura, ethanol, ether, acetone, Chemicalbook benzene nedzimwe organic solvents dzakawanda, dzinozivikanwa se "universal solvent". Patembiricha yemumba nemvura zvinogona kusanganiswa zvishoma, mamwe mabhizinesi asingabvumirwe kushandisa reagents ari kushandisa poindi iyi kuita tetrahydrofuran reagent water profiteer. Nekuda kwetsika yeTHF yekugadzira peroxides mukuchengetedza, antioxidant BHT inowanzo wedzerwa muzvigadzirwa zvemaindasitiri. Hunyoro ≦0.2%. Ine hunhu hwehupfu hushoma, kufashaira kwakaderera uye kuyerera kwakanaka.

Hunhu hwemakemikari:mvura inoonekera isina ruvara, ine hwema hwe ether. Yakasanganiswa nemvura, alcohol, ketone, benzene, ester, ether, uye hydrocarbons.

Mashandisirwo makuru:

1. Zvinhu zvisina kugadzirwa zve spandex synthesis reaction:

Tetrahydrofuran pachayo inogona kuva polycondensation (nekushandisa cationic ring-opening repopolymerization) mu polytetramethylene ether diol (PTMEG), inozivikanwawo se tetrahydrofuran homopolyl. PTMEG ne toluene diisocyanate (TDI) zvakagadzirwa nekusapera, kuramba mafuta, kushanda kwekupisa kwakaderera, simba rakawanda rerabha rakakosha; Block polyester elastic material yakagadzirwa ne dimethyl terephthalate uye 1, 4-butanediol. PTMEG ine huremu hwemamorekuru hwe2000 uye p-methylene bis (4-phenyl) diisocyanate (MDI) kugadzira polyurethane elastic fiber (SSPANDEX fiber), rabha rakakosha uye zvimwe zvinhu zvakakosha zvekuputira. Kushandiswa kwakakosha kweTHF ndekwekugadzira PTMEG. Zvichienderana nehuwandu hwe rough, inenge 80% ye THF yepasi rose inoshandiswa kugadzira PTMEG, uye PTMEG inonyanya kushandiswa kugadzira spandex fiber.

2. Chinonyungudutsa chinoshanda zvakanaka kwazvo:

Tetrahydrofuran chinhu chinoshandiswa zvakanyanya, chakakodzera kunyungudutsa PVC, polyvinylidene chloride uye butyl aniline, chinoshandiswa zvakanyanya sechinofukidza pamusoro, chinodzivirira ngura, inki yekudhinda, tepi uye chinofukidza firimu, neChemicalbook mu electroplating aluminum liquid inogona kudzora ukobvu hwearuminiyamu uye kupenya kwayo. Chinonyungudutsa che tepi, chinofukidza pamusoro pe PVC, chinochenesa PVC reactor, kubvisa firimu rePVC, chinofukidza cellophane, inki yekudhinda yepurasitiki, chinofukidza thermoplastic polyurethane, chinonamira, chinowanzoshandiswa muzvinofukidza pamusoro, zvinofukidza zvinodzivirira, inki, zvidhonza uye zvinogadzirisa pamusoro peganda rekugadzira.

3. Inoshandiswa sezvinhu zvekugadzira organic senge mishonga:

Kugadzira tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone uye pyrrolidone. Muindasitiri yemishonga, inoshandiswa mukugadzirwa kwe coughbixin, rifumycin, progesterone nemimwe mishonga yemahormone. Tetrahydrothiophenol inogadzirwa ne hydrogen sulfide treatment, iyo inogona kushandiswa sechinhu chinonhuhwirira mumafuta egasi (chinowedzerwa pakuziva), uye ndiyowo solvent huru muindasitiri yemishonga.

4. Mamwe Mashandisirwo:

Chromatographic solvent (gel permeation chromatography), inoshandiswa pakuravira kwegasi rechisikigo, acetylene extraction solvent, polymer material light stabilizer, nezvimwewo. Nekushandiswa kwakakura kwetetrahydrofuran, kunyanya mumakore achangopfuura, kukura nekukurumidza kweindasitiri yepolyurethane, kudiwa kwePTMEG munyika medu kuri kuwedzera, uye kudiwa kwetetrahydrofuran kunoratidzawo kukura nekukurumidza.

Njodzi:Tetrahydrofuran iri muchikamu che3.1 chinobatidza moto chine poindi shoma, chinobatidza moto zvakanyanya, utsi hunogona kugadzira musanganiswa unoputika nemhepo, muganho wekuputika uri 1.5% ~ 12% (chikamu chevhoriyamu), pamwe nekutsamwa. Hunhu hwayo hwekubatidza moto zvakanyanya injodziwo yekuchengetedza. Dambudziko guru rekuchengetedza neTHFS kuumbwa zvishoma nezvishoma kwe organic peroxides dzinoputika zvakanyanya kana dzaiswa mumhepo. Kuderedza njodzi iyi, THFS dzinotengeswa dzinowanzowedzerwa ne 2, 6-di-tert-butylp-cresol (BHT) kudzivirira kugadzirwa kwe organic peroxides. Panguva imwe chete, THF haifanirwe kuomeswa nekuti organic peroxides inenge yakabatana mu distillation residue.

Matanho ekudzivirira mashandiro:Kushanda kwakavharwa, kufefetedza zvakakwana. Vashandi vanofanira kudzidziswa zvakanyanya uye kutevedzera maitiro ekushanda. Zvinokurudzirwa kuti vashandi vapfeke chifukidzo chegasi chine mhando yekusefa (hafu yemasiki), magirazi ekudzivirira njodzi, mbatya dzinodzivirira kupisa, uye magirovhosi anodzivirira mafuta erabha. Chengeta kure nemoto, nzvimbo yekupisa, usasvute fodya kubasa. Shandisa masisitimu ekufema anodzivirira kuputika nemidziyo. Dzivisa utsi kuti husabude mumhepo yebasa. Dzivisa kusangana nemakemikari anokuvadza, maasidhi uye mabhesi. Mwero wekuyerera kwemhepo unofanirwa kudzorwa panguva yekuzadza, uye panofanira kunge paine mudziyo wepasi kudzivirira kuungana kwemagetsi. Pakubata, kurodha nekuburitsa zvinhu zvishoma kunofanirwa kuitwa kudzivirira kukuvara kwepakeji nemidziyo. Yakashongedzerwa nemhando dzakasiyana-siyana uye huwandu hwemidziyo yemoto uye kudonha kwemvura. Mudziyo usina chinhu unogona kunge uine zvasara zvinokuvadza.

Zvidziviriro zvekuchengetedza:Kazhinji chinhu ichi chine chinhu chinodzivisa kubatwa nemhepo. Chengeta mudura rinotonhorera, rine mhepo inofefetera. Chengeta kure nemoto nekupisa. Tembiricha yedura haifanirwe kudarika 30℃. Pakeji yacho inofanira kuvharwa uye isingabatani nemhepo. Inofanira kuchengetwa yakasiyana neoxidizers, acids uye bases, uye haifanirwe kusanganiswa. Mwenje usingaputike uye nzvimbo dzekufema dzinoshandiswa. Usashandise michina nematurusi anogona kupfuta. Nzvimbo yekuchengetera inofanira kunge yakashongedzwa nemidziyo yekurapa inobuda nekukurumidzira uye zvinhu zvakakodzera zvekubata.

Kurongedza: 180KG/dhiramu