Tetrahydrofuran/CAS:109-99-9

Tetrahydrofuran, yomwe chidule chake ndi THF, ndi mankhwala achilengedwe a heterocyclic. Pokhala m'gulu la ether, ndi chinthu chopangidwa ndi hydrogenated mokwanira kuchokera ku aromatic compound furan. Tetrahydrofuran ndi imodzi mwa ma polar ether amphamvu kwambiri, omwe amagwiritsidwa ntchito ngati medium polarity solvent mu zochita za mankhwala ndi kuchotsa. Ndi madzi opanda mtundu komanso osinthasintha kutentha kwa chipinda, okhala ndi fungo lofanana ndi ether. Yosungunuka mu zinthu zambiri zachilengedwe monga madzi, ethanol, ether, acetone, ndi benzene, imatchedwa "universal solvent". Pa kutentha kwa chipinda, imasakanikirana pang'ono ndi madzi, ndipo amalonda ena osaloledwa amagwiritsa ntchito izi kuti apeze phindu lalikulu posakaniza tetrahydrofuran reagent ndi madzi. Chifukwa cha chizolowezi cha THF chopanga peroxides panthawi yosungira, zinthu zamafakitale nthawi zambiri zimawonjezera BHT yotsutsa antioxidant. Chinyezi ≤ 0.2%. Ili ndi mawonekedwe a poizoni wochepa, kutentha kochepa, komanso kusinthasintha kwabwino.

Kagwiritsidwe Ntchito

1. Kapangidwe ka spandex ka zinthu zopangira tetrahydrofuran yokha kangakhale polycondensation (ndi cation initiated ring-opening polymerization) mu polytetramethylene ether glycol (PTMEG), yomwe imadziwikanso kuti tetrahydrofuran homopolymerization ether. PTMEG ndi toluene diisocyanate (TDI) zimapangidwa ndi ma rabara olimbana ndi abrasion, osagwirizana ndi mafuta, otsika kutentha, mphamvu yayikulu ya ma specialty rubber; komanso ndi dimethyl terephthalate ndi 1,4-butanediol zopangidwa ndi block polyether polyester elastomer materials. Kulemera kwa mamolekyulu a PTT ndi 2,000. Kulemera kwa mamolekyulu a PTMEG 2000 ndi p-methylene bis (4-phenyl) diisocyanate (MDI) yopangidwa ndi ulusi wosalala wa polyurethane (spandex, SPANDEX fiber), ma rabara apadera ndi zokutira zina zapadera zopangira. THF ndiye ntchito yofunika kwambiri yomwe imagwiritsidwa ntchito popanga PTMEG, malinga ndi ziwerengero zowerengeka, THF yoposa 80% padziko lonse lapansi imagwiritsidwa ntchito popanga PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG, ndi PTMEG. PTMEG, ndi PTMEG imagwiritsidwa ntchito makamaka popanga ulusi wosalala wa spandex.
2. Chosungunulira cha tetrahydrofuran chogwira ntchito bwino kwambiri ndi chosungunulira chabwino chomwe chimagwiritsidwa ntchito kwambiri, makamaka posungunulira PVC, polyvinylidene chloride ndi butylaniline, chomwe chimagwiritsidwa ntchito kwambiri ngati chosungunulira cha zokutira pamwamba, zokutira zoteteza, inki zosindikizira, matepi ndi zokutira za filimu za electro-Chemicalbook Aluminium Plating Liquid zimatha kuwongolera makulidwe a aluminiyamu ndi Kuwala. Chophimba cha tepi yamaginito, zokutira pamwamba pa PVC, kutsuka reactor ya PVC, kuchotsa filimu ya PVC, zokutira cellophane, inki yosindikizira pulasitiki, zokutira polyurethane za thermoplastic, zosungunulira za zomatira, zomwe zimagwiritsidwa ntchito kwambiri pakuphimba pamwamba, zokutira zoteteza, inki, zotulutsa ndi zotsukira pamwamba pa chikopa chopangidwa.
3. Amagwiritsidwa ntchito ngati zinthu zopangira zinthu zachilengedwe monga mankhwala omwe amagwiritsidwa ntchito popanga tetrahydrothiophene, 1.4 - dichloroethane, 2.3 Amagwiritsidwa ntchito popanga tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyrolactone ndi pyrrolidone. Mu makampani opanga mankhwala, amagwiritsidwa ntchito popanga chifuwa, Rifamycin, progesterone ndi mankhwala ena a mahomoni. Tetrahydrothiophenol imapangidwa ndi mankhwala a hydrogen sulfide, omwe angagwiritsidwe ntchito ngati fungo labwino mu mpweya wamafuta (zowonjezera zozindikiritsa), komanso ndiye chosungunulira chachikulu mumakampani opanga mankhwala.
4. Ntchito Zina Chromatographic solvent (gel permeation chromatography), yomwe imagwiritsidwa ntchito popangira zokometsera za gasi wachilengedwe, solvent yochotsera acetylene, ndi zolimbitsa kuwala pazinthu za polima. Chifukwa cha kugwiritsidwa ntchito kwakukulu kwa tetrahydrofuran, makamaka kukula kwachangu kwa makampani aku China a spandex m'zaka zaposachedwa, kufunikira kwa PTMEG ku China kukuwonjezeka, ndipo kufunikira kwa tetrahydrofuran komwe kumachitika chifukwa cha izi ndi njira yomwe ikukula mwachangu.

Kulongedza ndi Kutumiza

180KG/Drum kapena malinga ndi zomwe makasitomala amafuna.
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Nthawi yosungiramo zinthu: Miyezi 24 kuyambira tsiku lopangidwa m'maphukusi oyambirira osatsegulidwa, osungidwa pamalo ozizira komanso ouma, kutali ndi dzuwa, madzi.
Nyumba yosungiramo zinthu zopumira mpweya, Youma pang'ono, Yosiyana ndi ma oxidants, ma acid.