Silicon dioxide: cuam tshuam rau tib neeg lub cev, thov hauv kev lag luam khoom noj. Khoom noj khoom haus emulsifier E551

2024 Tus sau: Isabella Gilson | [email protected]. Kawg hloov kho: 2023-12-17 03:27

Silicon dioxide (silica, SiO2; lat. silica) - silicon oxide (IV). Cov xim tsis muaj xim nrog lub melting point ntawm +1713… +1728 ° C, nrog siab hardness thiab lub zog.

Nws nyuaj rau overestimate cov nyhuv ntawm silicon dioxide rau tib neeg lub cev. Cov pob zeb hauv av yog lub luag haujlwm rau cov pob txha elasticity thiab yooj, ntsia thawv lub zog, plaub hau mob, thiab pab cov ntaub so ntswg zoo dua. Academician V. I. Vernadsky rightly asserted tias tsis muaj kab mob yuav tsim thiab nyob tsis muaj silicon. Silicon tsis tshwm sim nyob rau hauv cov xwm. Nws yog tam sim no nyob rau hauv daim ntawv ntawm dioxide nyob rau hauv pob zeb siv lead ua, jasper, topaz, amethyst, agate thiab lwm yam tseem ceeb minerals. Silicon dioxide yog siv nyob rau hauv kev lag luam khoom noj khoom haus raws li ib tug multifunctional zoo zaub mov additive.

Ntxiv lub npe

Crystal silicon dioxide yog lub npe nrov rau cov tshuaj ntxiv. Silicon Dioxide yog qhov kev xaiv thoob ntiaj teb. Hauv digital Europeansystem code yog sau li E551. Puas yog cov khoom noj khoom haus ntxiv txaus ntshai lossis tsis? Cia peb kawm saib.

Nws cov lus sib dhos: amorphous silicon dioxide; silica; IV silicon oxide; hmoov dawb; aerosil; silicic anhydride; German Silizium dioxide; silica gel; Fabkis dioxyde de silizium.

Tim yam khoom

Ib qho ntxiv xws li E 551 yog ib qho ntawm cov emulsifiers. Lawv tau siv txhua lub sijhawm hauv kev lag luam khoom noj.

Silicon dioxide yog ib yam khoom ntuj. Nws tshwm sim nyob rau hauv daim ntawv ntawm quartz, uas yog cov ntxhia ua xuab zeb. Siv nyob rau hauv kev lag luam khoom noj khoom haus yog ib yam khoom uas yog artificially synthesized, nrog ib tug high degree ntawm purity (amorphous silicon dioxide). Nws yog tau los ntawm cua sov silicon nyob rau hauv ib qho chaw oxygen. Cov tshuaj tiv thaiv oxidative tshwm sim ntawm qhov kub txog li 500 ° C. Lwm txoj kev yog hydrolysis ntawm silicon tetrachloride vapor nyob rau hauv ib tug hydrogen nplaim. Synthesis yog nqa tawm nyob rau hauv tshwj xeeb autoclaves los ntawm 1000 ºC.

Silicon dioxide nyob rau hauv nws daim ntawv ntuj tsuas yog siv hauv iav, kev tsim kho thiab kev lag luam zoo sib xws, qhov chaw purity ntawm cov khoom tsis tseem ceeb.

Ntaus thiab ntim

Tus qauv xim ntawm cov khoom yog xiav-dawb lossis dawb. Nws muaj pes tsawg leeg yog txiav txim los ntawm xws li ib tug tshuaj formula li SiO₂. Silicon dioxide externally sawv cev rau me me granules los yog hmoov. Tsis muaj ntxhiab tsw. Insoluble hauv ethanol thiab dej, soluble hauv hydrofluoric acid. Cov ntsiab lus ntawm cov tshuaj nquag yog 99%. Tsis muaj saj. Qhov ntom ntom- 2.2g ib cm^{3. Lwm yam khoom: siab zog thiab hardness, kub ruaj khov, muaj zog adsorbent, acid resistant.}

Cov tshuaj ntxiv no feem ntau ntim rau hauv cov hnab polyethylene hnyav lossis kraft ntawv hnab. Nws raug tso cai ntim cov khoom rau hauv cov thawv polypropylene yog tias muaj cov khoom siv polyethylene ntxiv.

Cia peb saib kom zoo dua ntawm kev siv silicon dioxide.

Kev tsim khoom rau kev lag luam khoom noj

SiO₂ yog siv hauv kev lag luam khoom noj ua khoom noj khoom haus, uas muaj nws tus kheej qhov ntsuas hauv European code system - E551.

Hauv nws daim ntawv ntshiab, silicon dioxide tsis siv hauv kev lag luam khoom noj. Nws siv cov hmoov Silicon Dioxide, los yog, muab tso rau lwm txoj kev, amorphous silica, "dawb soot". Kev tsim cov tshuaj ntxiv yog ua los ntawm cov chaw tsim khoom tshwj xeeb hauv ob txoj hauv kev ntawm cov khoom siv dag zog: Si yog rhuab hauv ib puag ncig oxygen ntawm tsib puas degrees Celsius, cov tshuaj tiv thaiv oxidative yog nqa tawm, uas ua rau kev tsim cov pob zeb dawb, thiab tshwj xeeb. sterilizers ntawm ib txhiab degrees, cov tshuaj tiv thaiv ntawm Silicona Tetrachlorida vapor nyob rau hauv ib tug hydrogen nplaim tshwm sim.

Qhov tsis zoo ntawm silicon dioxide rau tib neeg lub cev tsis tau lees paub.

Kev siv cov emulsifier no hauv kev tsim khoom noj yog tso cai nyob rau hauv txhua lub teb chaws yam tsis muaj kev zam (xws li Ukraine, Belarus, Russia, European lub teb chaws), muab hais tias nws cov ntsiab lus nyob rau hauv cov khoom tiav tsis mus dhau qhov txwv, uas yog, 30 g ib kg. Nws tsis yogteeb meem rau kev noj qab haus huv thiab nyab xeeb siv.

Teb kev siv tshuaj

E 551 suav nrog hauv cov npe khoom noj uas pom zoo. Raws li cov khoom pabcuam, silicon dioxide tiv thaiv clumping thiab caking ntawm tej khoom. Nws yog ntxiv rau semolina, hmoov, mis nyuj hmoov, txuj lom, qe hmoov, qab zib, ntsev thiab nws cov analogues. Normalizes qhov kev ntxhib los mos ntawm cov hlais los yog grated cheeses. Hloov ua kua rau hauv ib qho loj, khaws cia thiab txhim kho qhov tsw (khoom noj txom ncauj rau npias, chips, crackers, thiab lwm yam). Neutralizes tus nqi ntawm alkali nyob rau hauv dej cawv (xws li cognac), stabilizes acidity, brightens vim adsorption ntawm cov proteins uas huab cua npias, haus dej haus, ua rau nws tsis kam. Ib qho emulsifier yog siv rau saum npoo ntawm cov khoom qab zib confectionery (tsis suav nrog chocolate). Qhov no tiv thaiv kev nplaum, brittleness, thiab txuas lub txee lub neej.

Cov tshuaj ntxiv no tuaj yeem siv tau hauv txhua lub tebchaws. Nws qhov ntau yuav tsum tsis pub tshaj 30 g ib kg ntawm cov khoom hauv daim ntawv tiav.

Emulsifier E 551 yog siv ntau ntau rau cov kev xav tau ntawm cov tshuaj thiab tshuaj.

Raws li lub npe Aerosil, cov tshuaj no feem ntau yog siv los ua cov tshuaj tua kab mob ua kom muaj zog hauv cov tshuaj pleev, ntsiav tshuaj, emulsions thiab gels.

Silicon dioxide muaj nyob rau hauv cov tshuaj pharmacopoeias ntawm Denmark, Hungary thiab Austria.

Ua haujlwm thiab ua haujlwm ntawm cov khoom noj khoom haus no

Cov khoom no muaj ntau lub zog thiab sab ua haujlwm. Colloidal silicon dioxide nyob rau hauv daim ntawv ntawm xoob hmoov yog siv raws li ib tug zoo enterosorbent. Cov tshuaj no khi thiab tshem tawm cov co toxins los ntawm lub cev, suav nrog cov ntsev ntawm cov hlau hnyav. Xws li ib tug additive yog muaj raws li ib feem ntawm kev ncua uas alleviate tus mob ntawm lub cev nrog flatulence. Silicon dioxide txhim kho cov nyhuv ntawm cov tshuaj nquag, stabilizes emulsion.

Vim nws cov khoom adsorbing, cov tshuaj nyob rau hauv daim ntawv ntawm cov tshuaj pleev los yog gel yog siv sab nraud los kho cov qhov txhab purulent, kho mastitis, phlegmon thiab lwm yam kab mob. Cov cuab yeej muaj cov nyhuv antimicrobial, yooj yim faib rau ntawm daim tawv nqaij, tsis ua rau khaus thiab ua xua. Siv ua cov thickener hauv roj av jelly, ntses roj, cetyl cawv thiab glycerin.

Cov tshuaj ntxiv no tsis quav ntsej los ntawm cov tuam txhab tshuaj pleev ib ce. Cov tshuaj no tsuas yog siv nyob rau hauv muaj pes tsawg leeg ntawm cov tshuaj txhuam hniav raws li ib tug kiag li kev nyab xeeb whitening abrasive. Silicon dioxide tsis rhuav tshem cov hniav enamel, nws muaj kev nyab xeeb yog tias tus neeg mob nqos nws. Raws li cov khoom siv pabcuam, nws yog siv rau hauv kev tsim cov tshuaj txhuam, hmoov, tshuaj pleev ib ce thiab cream rau ntau hom tawv nqaij. Ua tsaug rau Aerosil, daim tawv nqaij irregularities yog npog, oily sheen yog tshem tawm, nplua wrinkles yog smoothed tawm. Zoo ntxuav cov dermis thiab tshem tawm cov cell tuag. Silicon dioxide tsis tuaj yeem ua hluav taws xob tam sim no, yog ib qho zoo tshaj plaws dielectrics (yog tias tsis muaj impurities nyob rau hauv muaj pes tsawg leeg).

Cov nyhuv ntawm silicon dioxide rau tib neeg lub cev

Qhov no ntxivtuaj yeem suav tias muaj kev nyab xeeb rau lub cev. Silicon dioxide muaj nyob rau hauv tib neeg plasma thiab ntshav. Cov khoom, los ntawm sab nraud, tsis tawg nyob rau hauv lub plab zom mov, tsis absorbed, thiab ib txwm tawm los nyob rau hauv yuav luag unchanged daim ntawv. Dab tsi yog qhov teeb meem ntawm silicon dioxide? Tsuas yog nqus tau ntawm silica hmoov yog txaus ntshai. Cov khoom me me tuaj yeem ua rau mob ntsws silicosis, granulomatous pob, thiab lwm yam mob hnyav.

Main producers

High-frequency silicon dioxide yog tsim nyob rau hauv cheeb tsam Bryansk los ntawm lub tuam txhab Ecosilicon. Cov neeg muag khoom txawv teb chaws tseem ceeb yog raws li hauv qab no: Gomel Chemical Plant nyob rau hauv Republic of Belarus, RHONE-POULENC hauv Fabkis, Evonik Industries hauv lub teb chaws Yelemees. Thaum pib ntawm lub xyoo pua xeem, ib tug kws kho mob ntawm lub teb chaws Yelemees, W. Kuehne, tau muab pov thawj tias silicon tebchaw ntxuav thiab kho cov hlab ntsha, thiab tiv thaiv kev loj hlob ntawm atherosclerosis. Nws cov lus xaus tom qab tau txais kev txhawb nqa los ntawm ntau cov kev tshawb fawb. Silicon dioxide tsim cov dej molecules, muab lawv lub peev xwm los tshem tawm cov kab mob, cov tebchaw txawv teb chaws thiab cov co toxins. Silicon dej tau txais qhov tshwj xeeb tshiab saj thiab cov yam ntxwv ntawm cov kab mob ua rau cov tshuaj.

Peb tau tshuaj xyuas cov txiaj ntsig ntawm silicon dioxide ntawm tib neeg lub cev.