Tetrahydrofuran

Tetrahydrofuran, yakapfupikiswa THF, ndeye heterocyclic organic compound.Ndeyekirasi ether, ndiyo inonhuhwirira musanganiswa furan yakakwana hydrogenation chigadzirwa.

Tetrahydrofuran imwe yeakasimba polar ethers.Inoshandiswa sepakati polar solvent mumakemikari maitiro uye kubvisa.Imvura inodziya isina ruvara uye ine kunhuhwirira kwakafanana neether.Soluble mumvura, ethanol, ether, acetone, Chemicalbook benzene uye mamwe akawanda organic solvents, inozivikanwa se "universal solvent".Pakamuri tembiricha uye mvura zvinogona zvishoma miscible, vamwe zvisiri pamutemo reagent bhizimisi kushandisa pfungwa iyi tetrahydrofuran reagent mvura profiteer.Nekuda kwemaitiro eTHF kugadzira peroxides mukuchengetedza, iyo antioxidant BHT inowanzowedzerwa kune zvigadzirwa zvemaindasitiri.Hunyoro hwemukati ≦0.2%.Iine maitiro ehupfu hwehupfu, yakaderera kuvira uye yakanaka fluidity.

Chemical properties:mvura isina ruvara inoonekera, ine hwema hweether.Yakasanganiswa nemvura, doro, ketone, benzene, ester, ether, uye mahydrocarbon.

Main applications:

1. Zvigadzirwa zve spandex synthesis reaction:

Tetrahydrofuran pachayo inogona kuva polycondensation (by cationic ring-opening repolymerization) mu polytetramethylene ether diol (PTMEG), inozivikanwawo se tetrahydrofuran homopolyl.PTMEG uye toluene diisocyanate (TDI) yakagadzirwa nekupfeka kusagadzikana, kupikisa mafuta, kuderera kwekushisa kwekushanda, simba rakakwirira rerabha yakakosha;Vhara polyether polyester elastic zvinhu 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 (SPANDEX faibha), rabha yakakosha uye chimwe chinangwa chakakosha chekuputira zvinhu.Iyo inonyanya kukosha kushandiswa kweTHF ndeyekugadzirwa kwePTMEG.Zvinoenderana nenhamba dzakaomarara, inosvika makumi masere muzana muzana yeTHF yepasi rose inoshandiswa kugadzirwa kwePTMEG, uye PTMEG inonyanya kushandiswa kugadzira spandex fiber.

2. Solvent nekuita kwakanakisa:

Tetrahydrofuran inowanzoshandiswa yakanakisa kunyungudutsa, kunyanya yakakodzera kunyungudutsa PVC, polyvinylidene chloride uye butyl aniline, inoshandiswa zvakanyanya seyakadzika pasi, anticorrosive coating, inki yekudhinda, tepi uye firimu coating solvent. layer gobvu uye yakajeka.Solvent for tepi coating, PVC surface coating, kuchenesa PVC reactor, kubvisa PVC film, cellophane coating, plastic printing inki, thermoplastic polyurethane coating, adhesive, inowanzoshandiswa pakuputira pamusoro, machira ekudzivirira, ingi, extractants uye pamusoro pemishonga yemishonga yeganda rekugadzira.

3. Inoshandiswa seyakagadzirwa organic synthesis yakadai semishonga:

Nekugadzirwa kwe tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone uye pyrrolidone.Muindasitiri yemishonga, inoshandiswa mukuumbwa kwecoughbixin, rifumycin, progesterone uye mamwe mahormone emishonga.Tetrahydrothiophenol inogadzirwa nehydrogen sulfide kurapwa, iyo inogona kushandiswa sechinhu chinonhuwa mumafuta gasi (identification additive), uye zvakare ndiyo inonyanya kunyungudutsa muindasitiri yemishonga.

4. Zvimwe Zvishandiso:

Chromatographic solvent (gel permeation chromatography), inoshandiswa pakunaka gasi rechisikigo, acetylene extraction solvent, polymer material light stabilizer, etc. Nekushandiswa kwakakura kwe tetrahydrofuran, kunyanya mumakore achangopfuura, kukura nokukurumidza kweindasitiri yepolyurethane, kudiwa kwePTMEG mune yedu. nyika iri kuwedzera, uye kudiwa kwe tetrahydrofuran kunoratidzawo kukurumidza kukura maitiro.

Ngozi:Tetrahydrofuran ndeyekirasi 3.1 inopisa mvura ine yakaderera flash point, yakanyanya kupisa, mhute inogona kugadzira musanganiswa unoputika nemhepo, kuputika muganho ndeye 1.5% ~ 12% (chikamu chevhoriyamu), nekushatirwa.Chimiro chayo chinopisa zvakanyanya zvakare njodzi yekuchengetedza.Iyo yakanyanya kuchengetedzeka kunetseka neTHFS ndiko kunonoka kuumbwa kweanoputika organic peroxides kana yaiswa mumhepo.Kudzikisa njodzi iyi, THFS inowanikwa mune zvekutengesa inowanzowedzerwa ne2, 6-di-tert-butylp-cresol (BHT) kutadzisa kugadzirwa kweorganic peroxides.Panguva imwecheteyo, THF haifanirwe kuomeswa nekuti organic peroxides inozoiswa mune inosara distillation.

Operation precautions:kuvharwa kushanda, kufefetedza kwakazara.Vashandi vanofanira kunge vakanyatsodzidziswa uye kunyatsotevedzera maitiro ekushanda.Zvinokurudzirwa kuti vashandisi vapfeke sefa yerudzi rwegasi mask (hafu yemasiki), magirazi ekudzivirira, zvipfeko zveanti-static, uye magurovhosi anodzivirira mafuta erabha.Ramba kure nemoto, sosi yekupisa, hapana kuputa munzvimbo yebasa.Shandisa kuputika-proof ventilation systems nemidziyo.Dzivirirai chiutsi kuti chisapukunyuke mumhepo yebasa.Dzivisa kusangana neoxidants, acids uye mabhesi.Mwero wekuyerera unofanirwa kudzorwa panguva yekuzadza, uye panofanirwa kunge paine chigadziro chekudzivirira kudzivirira kuunganidzwa kwe electrostatic.Pakubata, kurodha uye kuburitsa kunofanirwa kuitwa kudzivirira kukanganisa kurongedza uye midziyo.Yakashongedzerwa neyakasiyana-siyana uye huwandu hwemidziyo yemoto uye inodonha yekurapa emergency emergency.Mugaba usina chinhu unogona kunge uine zvisaririra zvinokuvadza.

Kuchengetedza:Kazhinji, chigadzirwa chine inhibitor.Chengetedza muimba yekuchengetera inotonhorera, ine mhepo.Ramba kure nemoto nekupisa.Kupisa kweimba yekuchengetera hakufanirwe kudarika 30 ℃.Iyo pasuru inofanira kuvharwa uye kwete kusangana nemhepo.Inofanira kuchengetwa zvakasiyana kubva kune oxidizers, acids uye mabhesi, uye haifaniri kusanganiswa.Kuputika-kuvhenekera kwemwenje uye zvivakwa zvemhepo zvinogamuchirwa.Usashandise midziyo yemakina uye maturusi anowanzo kupenya.Imba yekuchengetera inofanirwa kunge ine inovuza yekurapa yekukurumidzira michina uye yakakodzera kubata zvinhu.

Packaging: 180KG / chigubhu