Nyob rau hauv xyoo tsis ntev los, muaj zog txaus siab nyob rau hauv xws tshuaj raws li cov leej faj hexafluoride. Nws tau nce nyob rau hauv TV kev lom zem kev pab cuam, cov uas nto moo tshaj plaws "Good tso dag" thiab "Mythbusters." Tshwj xeeb yog xav nyob rau hauv ntau ntawm qhov tseeb hais tias siv no substance muaj peev xwm hloov lub suab nrov ntawm lub suab - nws yuav muaj tsawg kawg nkaus. Cov neeg xav tias nws yog ib lub tswv yim rau ob tog, txojkev thiab lwm yam kev lom zem. Yog hais tias muaj yog thov, yuav muaj ib lub tswv yim: tus Internet yog tsis yooj yim mus nrhiav tau ad cov muag khoom ntawm cov leej faj hexafluoride. Tab sis ua ntej koj maj mus yuav cov khoom no, nws yog ib pab tau kom koj to taub dab tsi nws yog ib thiab yuav ua li cas muaj kev nyab xeeb nws yog rau tib neeg.
Sulfur hexafluoride, aka - SF6, nws - leej faj hexafluoride, nws - lub insulating roj, - ib tug inorganic tshuaj compound. Nws yog lub npe hu rau ntau tshaj 100 xyoo, thiab txog tus tib neeg muaj tau ntse siv rau lawv tus kheej lub hom phiaj. Tshuaj zog: ib tug inert, uas tsis yog-tshuaj lom, hnyav roj (5 lub sij hawm hnyav zog dua cov pa). Cov tshuaj yeeb dej caw yog kiag li tsis muaj kob, muaj ib tug high hluav taws xob kuj thiab siab rhuav tshem voltage. Nws muaj ob txoj kev ntawm nws tsim - uas yooj yim tshuaj thiab decomposition ntawm complex fluorides ntawm sulfur. Vim nws physico-tshuaj zog yog siv raws li ib tug insulator nyob rau hauv qhov hluav taws xob kev lag luam, raws li ib tug txheej txheem dej - nyob rau hauv lub electronics kev lag luam, raws li tau zoo raws li ib tug inert nruab nrab rau qhov kev npaj ntawm alloys - nyob rau hauv metallurgy. Tsis ntev los no, sulfur hexafluoride (tsiaj ntawv ntawm "hluav taws xob roj") yog siv nyob rau hauv extinguishing hluav taws kub raws li ib tug tua hluav taws extinguishing neeg sawv cev. Cov no yog cov ntsiab uas daim ntawv thov ntawm cov leej faj hexafluoride.
Tab sis kev lom zem TV mus cuag lub Scope ntawm cov tshuaj yeeb dej caw thiab popularized nws. Yog vim li cas rau qhov no yog nws muaj peev xwm mus hloov tib neeg lub suab: Yog hais tias nqus tau cov pa leej faj hexafluoride, lub suab yuav monstrous, unnaturally tsawg. Kuv xav yog vim li cas qhov no tshwm sim? Feem ntau koj yuav nrhiav tau cov tswv yim hais tias leej faj hexafluoride muaj feem xyuam rau cov vocal cords, ua rau lawv kom luv luv lub sij hawm o thiab yog li "txo" lub suab. Qhov no yog tsis yog li ntawd. Lub fact tias lawv tus kheej vocal cords tsis tsim ib tug nrov suab. Vocal apparatus ntawm tus txiv neej sib nrug ligaments muaj ntau thiab resonators. Ib tug ntawm cov resonators - pas. Nyob rau timbre ntawm lub suab nyhuv, tshwj xeeb tshaj yog cov no resonator. Yog hais tias qhov no ib puag ncig - huab cua, peb hnov li ib txwm, paub rau tag nrho cov suab. Tab sis nws yog tsim nyog los hloov cov ib puag ncig, thiab peb yuav hnov cov lwm yam, coj txawv txawv heev lub suab. Qhov no yog piav los ntawm cov nram qab no txoj ntsiab cai: lub lighter cov roj thiab sai lub zog ntawm nws cov molecules, lub siab yuav ua tau lub suab. Conversely, lub cev ntas cov roj, qeeb qeeb lub zog ntawm tus molecules, lub sab laus. Helium yog sib zog tshaj huab cua, yog li lub suab yog suab soob, heev nyias los ntawm nqus tau pa ntawm cov roj. Sulfur hexafluoride, raws li twb tau hais, 5 lub sij hawm nyuaj rau ua pa thiab yog hais tias nws lub suab yuav ntxhib thiab tsis muaj. Tus ntawd yog nws: ib tug funny nyhuv ntawm cov leej faj hexafluoride los piav luv luv-term kev hloov ntawm lub resonator ntawm qhov chaw. Nqus tau pa ntawm no yam khoom uas yog tsis suav tias yog teeb meem rau lub cev yog hais tias nws tsis muaj impurities.
Yog hais tias koj xav mus yuav cov leej faj hexafluoride, tus nqi yuav tsum tsis txhob yuav determinant rau koj. Yog tsis muaj kev tsis sib haum hais tias qhov no yog ib qho tseem ceeb, tab sis noj qab haus huv yog kim kim. Yog li ntawd kev yuav khoom cov leej faj hexafluoride, nug tus neeg muag khoom, cov "dawb huv" Seb nws hexafluoride tsis muaj seb puas muaj lwm yam additives. Qhov no yuav tiv thaiv koj thiab koj tus qhua hais tias koj yuav tsum mus mus lom zem cov leej faj hexafluoride los ntawm tus npaj txhij txog thiab tsis kaj siab surprises.