Tetrahydrofuran (THF): Mokwatla o o Dirang ka Dikhemikhale ka Nepo

Tshekatsheko e e Tseneletseng ya Dipharologantsho tsa Fisikakhemikhale

Popego e e Kgethegileng ya Dimolekhule
Popego ya THF e akaretsa mogala wa ether o o dikologang o o nang le athomo ya okosejene, e e tlhamang dinonofo tse di latelang tsa konokono:
Polar Solvency: Motsotso wa dipole wa 2.75 D o kgontsha kgolagano ya haeterojene le dimolekhule tsa polara fa e ntse e rarabolola metswako e e seng ya polara ka ditirisano tsa dipole tse di tlhotlhelediwang, mme seno se dira gore e nne e e siametseng dithulaganyo tse di farologaneng tsa tsibogo.
Tsibogo ya Lesale: Lesale la ether le feta mo go bulegeng ga lesale go go tlhotlhelediwang ke esiti, go tlhofofatsa ditsibogo tse di jaaka alkylation le polymerization. Go tsiboga gono go botlhokwa thata mo go tlhameng dipolymer tse di jaaka glycol ya polytetramethylene ether (PTMEG).

Dipharologantsho tsa mmele
Botsitso ba Mocheso: Ho bela ka 66°C le ho gatsela ka -108.5°C, THF e dula e le mokedikedi ho pholletsa le mefuta e fapaneng ya mocheso, e loketse dikarabelo tsa mocheso o tlase le dithulaganyo tsa mowafatso e potlakileng.
Dithoto tsa Dipalangwa: Viscosity e e kwa tlase (0.55 mPa·s) le tsitsipano e e kwa godimo ya boalogodimo (26.4 mN/m) di tokafatsa bokgoni jwa yona jwa go kolobisa, jo bo botlhokwa mo ditirisong tsa go phepafatsa le go apesa.
Tlhokomediso ya Pabalesego: E tuka thata (ntlha ya go tuka -17.2°C) le go bopa metswako e e thunyang le mowa (1.8–12.4% vol), e e tlhokang dikgato tse di gagametseng tsa thibelo ya molelo.

Ditiriso tsa Botlhokwa go Ralala Diintaseteri

Go Tlhagisa Polymer le Resin
Tshwaraganyo ya pholyurethane (PU):
Tlhagiso ya PTMEG: THF ke sedirisiwa se se tala sa konokono sa go tlhama glycol ya polytetramethylene ether (PTMEG), karolo e e bonolo ya botlhokwa mo ditlhaleng tsa spandex le mo di-polyurethane tsa polasetiki e e mogote (di-TPU). Ho feta 90% ya THF ya lefatshe e sebediswa lefapheng lena, ka tono e nngwe le e nngwe ya spandex e hlokang ditone tse ~0.8 tsa THF.
PU Adhesives: Blended le DMF, THF bōpa ka potlako-omisa, phahameng-thata dikgomaretsi bakeng sa lieta le likoloi ka hare, fana ka 35% tiileng dikahare le 40% ka potlako omisa ho feta hloekileng DMF dithulaganyo.
Epoxy le Diresine tsa Maitirelo:
Jaaka setlhaolosi-mmogo mo ditlhamong tsa epoxy, THF e tokafatsa go tlhakana le go fokotsa go tshwaragana, go kgontsha tiriso e e nepagetseng ya go apesa mo dilong tsa ileketeroniki le mo difofaneng.

Khemeseteri ya Ditshedi le e e Kgethegileng
Ditsibogo tsa ga Grignard:
THF e tsitsisa di-magareng tsa organometallic (sekao, RMgX) ka go dirisana mmogo le di-ion tsa magnesium, e oketsa dipoelo tsa tsibogo ka 15-20% fa e bapisiwa le diethyl ether. Sekao: Mo tshwaraganong ya ibuprofen, dikgato tsa Grignard tse di theilweng mo THF di fitlhelela bophepa jwa ≥99.5% ka ditlhagiswa tsa ≤0.3%.
Dieleketerolaete tsa Beteri ya Lithiamo:
THF e ntlafatsa go tsamaisa ga dieleketerolaete tse di theilweng mo lithiamong hexafluorophosphate (LiPF6) (≥10 mS/cm), e tokafatsa botshelo jwa modikologo go fitlha go makgetlo a a fetang 1 000 (go boloka bokgoni ≥85%) mo dibeteri tsa tshipi tsa lithiamo.

Dikarolo tsa Thekenoloji e e Kwa Godimo le tsa Dithuto tse di Kgethegileng
Phepafatso ya Semiconductor: THF e tlosa masalela a photoresist mo tlhagisong ya di-microelectronics, e fitlhelela kgotlhelo ya ion ya tshipi ≤10 ppb ya dithulaganyo tsa ka fa tlase ga 14 nm.
Go dira dikristale tsa melemo: E dirisiwa mo go direng kristale gape ya dibolayamegare le di-steroid, dithulaganyo tsa THF-metsi di ntsha dikristale tse di tshwanang (50–200 μm) tse di nang le bophepa jwa ≥99.9%.
Go ntsha Ditlhagiswa tsa Tlhago: E tlhotlhora metswako ya lipophilic ka go tlhopha (sekao, CBD, paclitaxel) ka bophepa jo bo kwa godimo jwa 25% go feta ditlhaolosi tse di seng tsa polara, fa e ntse e fokotsa go senyega ga mogote ka tiriso ya mogote o o kwa tlase.

Ditlhaloso

Letlhare la Taolo ya Boleng

Dikakanyo tsa Pabalesego le Diphetogo tsa Intaseteri

Dikotsi tsa Boitekanelo le Tikologo
Botlhole: Go hema dilekanyo tse di kwa godimo (>500 ppm) go ka baka go tshwenyega thata mo maikutlong ga CNS; go nna mo kotsing nako e telele go ka ama tiro ya sebete/diphilo. E tlhoka tshireletso ya go hema (APF≥10) le ditlelafo tse di sa amiweng ke dikhemikhale.
Khuetso ya Tikologo: E ka senyega mo mmung (halofo ya botshelo ≤malatsi a le 5) fela e botlhole mo botshelong jwa metsi (LC50 tlhapi=110 mg/L). Metsi a a leswe a tshwanetse go tlhatlhobiwa ka tsela e e tsweletseng (COD≤50 mg/L) pele a tshololwa.

Ditsibogo tsa Taolo le tsa Setegeniki
Dikereiti tsa Bophepa:
Intaseteri (≥99%): Bakeng sa tshwaraganyo ka kakaretso, go letla ≤0.5% ya metsi/aldehydes.
Eleketeroniki (≥99.9%): Di-ione tsa tshipi ≤1 ppb, tse di tsamaelanang le SEMI C8 tsa tiriso ya di-semiconductor.
Melemo (≥99.5%): E amogetswe ke FDA, di-aldehyde ≤10 ppm tsa tlhagiso ya melemo.
Go Ikobela Melao ya Lefatshe Lotlhe:
EU REACH: E thibetswe mo dilong tse di amanang le dijo (go fuduga ≤0.05 mg/kg).
OSHA ya Amerika: PEL-TWA 200 ppm (590 mg / m3), e e tlhokang go ela tlhoko mowa wa kwa tirong.

Ke Eng fa re Tlhopha THF ya Rona?

Bophepa jo bo sa ineeleng: Dithulaganyo tse di tsweletseng tsa go tlhotlhora gararo di ntsha THF ya maemo a eleketeroniki ka bophepa jwa 99.99%, ka bongola ba ≤10 ppm le di-aldehyde tsa ≤1 ppm, go netefatsa go tlhomama ga setlhopha go ya go setlhopha (pharologano ≤±0.02%).
Ditharabololo tse di itiretsweng: Ditlhamo tse di rulaganyeditsweng diteng tsa metsi (50–1000 ppm), maemo a peroxide (≤10 ppm), le pH (5.0–7.0), jaaka THF e e kwa tlase ya peroxide ya ditlhakanyo tse di bosisi tsa melemo.
Dithulaganyo tse di Kgweediwang ke Pabalesego: Polokelo e e khurumeditsweng ka naeterojene le dithulaganyo tsa dipalangwa tse di thibelang go thunya di netefatsa go tshwarwa ka pabalesego go tswa mo tlhagisong go ya kwa thomelong.
Bofefo jwa Taolo: Go ikobela ga lefatshe ka bophara maemo a SEMI, ACS, le FDA, a a tshegediwang ke MSDS e e ka fetolwang go tsena mo mmarakeng o o se nang mathata.

Go Dira Dikhemikhale ka Botswerere

Tekatekano e e kgethegileng ya THF ya go kgona go duela, go tsiboga le go inaakanya le dithulaganyo e e baya jaaka leje la motheo mo khemiseteri ya segompieno. Boineelo jwa rona mo ditlhagisweng tsa bophepa jo bo kwa godimo, boitshimololedi jwa setegeniki, le go ikobela melao bo naya bareki maatla a dipolasetiki, tsa ileketeroniki le tsa melemo go kgweetsa diphitlhelelo ka maikarabelo. Tlhopha THF ya rona go lotlolola nepo, tiragatso, le go tswelela pele mo tirisong nngwe le nngwe.