Nyob rau hauv lub ntiaj teb niaj hnub no, qhov twg kev siv tshuaj muaj ntau dua hauv peb lub neej niaj hnub, kev nkag siab txog cov khoom thiab kev sib cuam tshuam ntawm cov tshuaj no yog qhov tseem ceeb heev. Tshwj xeeb, cov lus nug ntawm seb puas tuaj yeem sib xyaw isopropanol thiab acetone muaj qhov cuam tshuam tseem ceeb hauv ntau daim ntawv thov. Hauv tsab xov xwm no, peb yuav delve rau hauv cov khoom siv tshuaj lom neeg ntawm ob yam khoom no, tshawb xyuas lawv cov kev sib cuam tshuam, thiab sib tham txog cov txiaj ntsig ntawm kev sib xyaw.
Isopropanol, tseem hu ua 2-propanol, yog cov tsis muaj xim, hygroscopic kua nrog cov yam ntxwv tsw. Nws yog miscible nrog dej thiab soluble nyob rau hauv ntau cov organic solvents. Isopropanol feem ntau yog siv los ua cov kuab tshuaj, tshuaj ntxuav tes, thiab hauv kev tsim khoom ntawm ntau yam tshuaj. Acetone, ntawm qhov tod tes, yog siv dav siv cov kuab tshuaj uas tseem siv los ua tus ntsia thawv polish tshem tawm. Nws yog volatile heev thiab miscible nrog ntau cov organic solvents.
Thaum isopropanol thiab acetone sib xyaw, lawv tsim ib qho sib xyaw binary. Kev sib cuam tshuam tshuaj lom neeg ntawm ob yam khoom muaj tsawg heev vim tias lawv tsis raug tshuaj lom neeg los tsim ib qho chaw tshiab. Hloov chaw, lawv nyob twj ywm raws li cov chaw sib cais hauv ib theem. Cov cuab yeej no yog ntaus nqi rau lawv cov polarities zoo sib xws thiab hydrogen-bonding peev xwm.
Kev sib xyaw ntawm isopropanol thiab acetone muaj ntau yam kev siv. Piv txwv li, nyob rau hauv zus tau tej cov adhesives thiab sealants, ob yam khoom no feem ntau yog siv nyob rau hauv kev sib xyaw ua ke los tsim ib tug xav tau adhesive los yog sealant khoom. Kev sib xyaw kuj tuaj yeem siv rau hauv kev lag luam tu los tsim cov kuab tshuaj sib xyaw nrog cov khoom tshwj xeeb rau kev ua haujlwm sib txawv.
Txawm li cas los xij, thaum sib xyaw isopropanol thiab acetone tuaj yeem tsim cov khoom siv tau zoo, nws yog qhov tseem ceeb uas yuav tsum tau ceev faj thaum ua haujlwm. Isopropanol thiab acetone muaj cov ntsiab lus qis qis, ua rau lawv cov nplaim taws heev thaum sib xyaw nrog huab cua. Yog li ntawd, ib tug yuav tsum xyuas kom zoo qhov cua thiab siv ceev faj thaum tuav cov tshuaj no kom tsis txhob muaj hluav taws kub los yog tawg.
Hauv kev xaus, kev sib xyaw isopropanol thiab acetone tsis ua rau muaj tshuaj lom neeg ntawm ob yam khoom. Hloov chaw, lawv tsim ib qho sib xyaw binary uas tswj hwm lawv cov khoom qub. Qhov kev sib xyaw no muaj ntau yam kev siv hauv ntau yam kev lag luam, suav nrog kev tu, kev tsim cov nplaum, thiab lwm yam. Txawm li cas los xij, vim lawv cov nplaim taws, yuav tsum ceev faj thaum tuav cov tshuaj no kom tsis txhob muaj hluav taws kub lossis tawg.
Post lub sij hawm: Jan-25-2024