Thermal ntawv yog dav siv cov ntawv siv coated nrog chemical uas hloov xim thaum muaj cua sov. Cov cuab yeej tshwj xeeb no ua rau nws zoo rau siv nyob rau hauv ntau yam kev siv nrog cov ntawv qiv nyiaj, ntawv lo thiab daim pib. Txhawm rau kom nkag siab cov tshuaj muaj kuab lom cov tshuaj xyaw, nws yog qhov tseem ceeb kom delve rau cov khoom xyaw tseem ceeb uas tso cai rau nws ua nws txoj haujlwm npaj.
Lub ntsiab siv tshuaj tiv thaiv ntawm cov ntawv thermal yog cua sov-rhiab tuag. Cov xim no feem ntau yog ib qho tsis muaj xim uas tsis muaj xim uas tsis muaj tshuaj lom neeg thaum ua kom pom xim. Feem ntau siv dyes hauv thermal ntawv yog leuco dyes, uas tau paub rau lawv cov xim reversible. Thaum cov ntawv thermal yog rhuab, cov xim tsis muaj xim ib txheej txheem hu ua thermocromism, ua rau nws hloov los ntawm lub xeev tsis muaj xim rau lub xeev xim. Qhov kev hloov xim xim no yog dab tsi uas tsim cov duab pom thiab cov ntawv ntawm cov ntawv thermal.
Ntxiv rau qhov zas xim, cov ntawv cua sov tseem muaj cov tsim tawm tsim tawm. Tus tsim tawm feem ntau yog cov xim acidic sib xyaw uas cov kev cuam tshuam nrog cov xim thaum ua kom sov, ua rau zas xim. Tus tsim tawm ua lub luag haujlwm tseem ceeb hauv cov txheej txheem luam ntawv thermal, txhawb nqa cov xim luam tawm, ua kom cov duab luam tawm thiab cov ntawv nyeem meej thiab nyeem tau.
Ib qho ntxiv, cov ntawv thermal muaj cov txheej txheem tiv thaiv uas pab tiv thaiv cov duab sau thiab cov ntawv nyeem. Cov txheej no feem ntau yog tsim los ntawm kev sib xyaw ntawm cov tshuaj xws li waxes thiab resins los muab txheej tiv thaiv ntawm cov ntawv luam tawm. Cov txheej tiv thaiv tsis tsuas yog pab tiv thaiv kom txhob muaj cov luam tawm los ntawm smudging thiab fading, tab sis kuj tseem ua kom tiav tag nrho cov ntawv thermal ntawm thermal.
Nws muaj nqis ceeb toom tias cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov ntawv cua sov tuaj yeem sib txawv nyob ntawm nws qhov kev npaj siv. Piv txwv, cov ntawv thermal siv rau cov tw ntawv yuav muaj cov tshuaj sib txawv ntau dua li cov ntawv thermal lossis daim pib. Cov tuam txhab tsim khoom tuaj yeem ua rau cov tshuaj muaj pes tsawg leeg ntawm cov ntawv sau ua ke kom tau raws li cov kev xav tau, cov dej tsis kam, lossis sib xyaw nrog cov tshuab luam ntawv txawv.
Thaum cov ntawv thermal muaj ntau yam zoo, suav nrog cov nqi luam ntawv ceev thiab cov nqi kho mob me, nws yuav tsum tau ua raws li nws cov tshuaj muaj pes tsawg leeg. Raug rau qee yam tshuaj lom neeg lossis huab cua sov heev tuaj yeem cuam tshuam kev ua tau zoo thiab kav lub neej ntawm daim ntawv thermal. Kev khaws ntaub ntawv zoo thiab cov hau kev yog qhov tseem ceeb rau kev ua kom cov ntaub ntawv thermal tseem nyob rau hauv qhov zoo tshaj plaws rau kev siv.
Hauv cov ntsiab lus, nkag siab txog cov tshuaj muaj pes tsawg leeg ntawm cov ntawv cua sov yog qhov tseem ceeb rau kev nkag siab nws cov peev txheej thiab cov ntawv thov. Kev sib xyaw ntawm cov thermal dyes, tsim tawm cov tshuaj, thiab tiv thaiv cov txheej txheem tiv thaiv cua sov kom xa cov khoom siv zoo, cov ntawv luam tawm zoo. Nrog rau kev nkag siab tob ntawm cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov ntawv sau ua ke, cov neeg siv tuaj yeem paub txiav txim siab txog nws siv, ua kom tau txais ntau yam kev luam ntawv.
Lub Sijhawm Post: Mar-20-2024