Silica Gel Dab Tsi thiab Kev Txiav Txim Rau Lawv Li Cas?

Silica, tseem hu ua silicon dioxide nrog cov tshuaj lom cov tshuaj SiO2, yog ib qho ntawm cov khoom siv ntau tshaj thiab muaj ntau tsev neeg. Thiab silica gel yog daim ntawv amorphous thiab ntxeem tau ntawm silicon dioxide thiab tsim synthetically ua granules uas nyuaj.

Kev Txhim Kho ntawm Silica Gel

Cov neeg feem coob yuav xav tias silica gel yog ib hom kev lag luam tawm tshiab uas tsis muaj lub tshuab ua haujlwm zoo tshaj plaws, yog li lawv ib txwm nug seb nws puas muaj kev nyab xeeb thiab kev lag luam loj ntawm silica gel tau tso cai lossis tsis. Qhov tseeb, raws li kev tshawb fawb ntau yam peb tau ua, silica gel tsis yog qhov khoom ntawm kev txhim kho ntawm kev lag luam niaj hnub; qhov tseeb, nws twb muaj cag rau hauv keeb kwm ntev los ntawm tib neeg.

Hauv xyoo pua 11th, cov neeg hauv South America tau pib ua cov hnab roj hmab silicone rau kev ua si thiab kev txi - qhov no yog qhov kev thov ntxov tshaj plaws ntawm silicone uas peb tau paub txog tam sim no. Xyoo 1493, thaum tus kws tshawb nrhiav neeg Italian thiab tus kws tsav nkoj Christopher Columbus taug kev saum av American ntxiv, nws pom tias cov neeg Khab tau ua si nrog cov pob dub uas tuaj yeem thaws qhov siab tom qab tsoo lub hauv av - lub pob no tau ua los ntawm latex tau los ntawm qee hom ntoo Cov.

Xyoo 18th, cov kev txhawb siab rau South America tau hla thoob Fab Kis. Xyoo 1736, tus kws tshawb nrhiav Fabkis thiab neeg txaij zeb hauv av Charles Marie de La Condamine tau mus koom kev lag luam mus rau Amelikas Qab Teb. Nws tuaj txog ntawm Quito, Ecuador thaum kawg thiab dhau los ua thawj tus European ntsib cov roj hmab hauv cov txheej txheem. Tom qab ntawd, nws nthuav tawm ib daim ntawv uas piav txog ntau cov khoom ntawm cov roj hmab uas nws tau kawm.

Raws li rau silica gel, nws yog nyob rau hauv hav zoov ntxov li 1640s ua kev paub txog kev tshawb fawb. Nws tau siv hauv Ntiaj Teb Tsov Rog I rau qhov adsorption ntawm vapors thiab roj cua hauv cov roj npog ntsej muag. Cov txheej txheem hluavtaws tsim ua cov tshuaj silica gel tau tsim daim ntawv sau txog xyoo 1918 los ntawm Walter A. Patrick, tus kws qhia txog chemical Science rau ntawm Johns Hopkins University.

Hauv Ntiaj Teb Tsov Rog Zaum II, silica gel yog qhov tsis tuaj yeem hauv kev ua tsov rog ua kom penicillin qhuav, tiv thaiv cov khoom siv tub rog los ntawm kev ua kom cov dej noo, ua cov kua nplaim hluav taws xob rau kev tsim cov roj av octane siab, ua rau cov roj carbon disulfide, thiab raws li catalyst txhawb rau kev tsim khoom ntawm butadiene los ntawm ethanol.

Tam sim no, kev lag luam silica gel tsim sai heev hauv Suav teb. Cov kev tshawb fawb pom tias ntau npaum li cas ntawm cov khoom siv no peb siv txhua xyoo twb tau dhau ntau txhiab tons.

Yuav Ua Li Cas Txiav Txim Seb Silica Gel Zoo Los Tsis Yog?

Thaum pib, silica gel tsuas yog siv hauv cov chaw aviation thiab tub rog. Tam sim no, nws yog dav siv hauv tshuab hluav taws xob, ntawv, tsheb, tshuab, tawv thiab ntawv, hlau, pleev xim, tshuaj thiab khoom siv kho mob, khoom siv hluav taws xob, khoom ua si, kho vajtse, khoom ua si, suab, teeb pom kev zoo, thiab ntau yam kev lag luam. Silica gel cov khoom lag luam tau cuam tshuam nrog peb lub neej thiab ua haujlwm niaj hnub no.

Tam sim no silica gel tseem ceeb heev, peb yuav siv txoj hauv kev txiav txim siab seb qhov silica gel zoo los tsis zoo, lossis ua lwm yam lus, peb tuaj yeem qhia qhov zoo ntawm silica gel?

Koj tuaj yeem yooj yim txiav txim rau lawv los ntawm lawv qhov tsos qee zaum. Silica gel yog ib hom tsis muaj tshuaj lom, tsis muaj ntxhiab, thiab tsis muaj kob uas muaj cov ntawv sau zoo, yog li nws yuav ua rau muaj kev phom sij loj rau tib neeg lub cev. Txawm li cas los xij, cov khoom cuav lossis cov roj nplua nyeem silica cov khoom lag luam feem ntau yog tsim hauv txoj hauv kev nruj thiab ntu - lawv yog cov tshuaj lom thiab muaj qhov tsis hnov ​​tsw phem.

Feem ntau hais lus, silica gel muaj qhov ua tau zoo thiab elasticity, uas txhais tau tias nws tiv taus kev tawg, khoov, txiav, lossis lwm hom kev deformation. Yog li cov ntawv nplua silica gel yuav hloov kho kom zoo nkauj, thaum lub siab zoo silica gel tuaj yeem rov qab mus rau nws qhov qub lossis loj yooj yim. Dab tsi ntxiv, cov qib siab zoo silica gel feem ntau hnov ​​ntau kov ntau dua, rau qhov muaj cov roj zoo li khoom rau ntawm cov npoo av yog tias nws tsis tshwj xeeb ua ntej.

Koj tseem tuaj yeem qhia qhov zoo ntawm silica gel los ntawm cov xim ntawm nplaim. Cov pa luam yeeb dub yuav raug tso tawm thaum cov khoom lag luam uas tsis muaj cov tshuaj silica gel raug hlawv, thiab yuav muaj cov hmoov dub sab laug. Txawm li cas los xij, tsis hais qhov xim cov khoom zoo li cas los xij, ntev npaum li nws tau ua los ntawm cov yeeb yaj kiab uas muaj txiaj ntsig zoo, nws yuav tsim cov pa luam yeeb dawb thaum hlawv, thiab cov seem uas tseem yog cov hmoov dawb.