Video: Yuav ua li cas thermochromic kua crystals ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thermochromic xim siv kua siv lead ua kua los yog leuco dye technology. Tom qab absorbing ib tug npaum li cas ntawm lub teeb los yog kub, lub crystallic los yog molecular qauv ntawm cov xim reversibly hloov nyob rau hauv xws li ib txoj kev uas nws absorbs thiab emits lub teeb ntawm ib tug txawv wavelength tshaj nyob rau hauv qis kub.
Kuj tseem paub yog, lub ntsuas kub ua kua siv lead ua ua haujlwm li cas?
A Crystal ntsuas kub , kub sawb los yog yas strip ntsuas kub yog hom ntsuas kub uas muaj kub-rhiab heev (thermochromic) kua siv lead ua kua nyob rau hauv ib lub hnab yas uas hloov xim los qhia qhov kub thiab txias. Kev daws teeb meem ntawm siv lead ua kua sensors yog nyob rau hauv 0.1 ° C ntau yam.
Qhov thib ob, cov khoom siv thermochromic yog dab tsi? 2.4 Thermochromics Cov khoom siv thermochromic hloov pauv lawv cov xim los ntawm kev hloov pauv kub. Cov ntaub ntawv thermochromic feem ntau yog cov organic leuco-dye mixs, tsim los ntawm cov xim qub, tus tsim xim, thiab cov kuab tshuaj. Cov xim qub feem ntau yog cyclic ester thiab txiav txim siab cov xim hauv paus.
Ib sab saum toj no, cov kua siv lead ua kua hloov xim li cas?
Cov molecules hauv a ua kua siv lead ua tuaj yeem txav mus los ntawm nws tus kheej, zoo li hauv a ua kua , tab sis nyob twj ywm me ntsis, raws li nyob rau hauv ib tug siv lead ua (khoom). Cov no kua siv lead ua kua teb rau kev hloov nyob rau hauv kub los ntawm hloov xim . Raws li qhov kub thiab txias, lawv xim hloov los ntawm liab mus rau txiv kab ntxwv, daj, ntsuab, xiav, thiab ntshav.
Cov xim thermochromic ntev npaum li cas?
ib xyoo
Pom zoo:
Yuav ua li cas ua kom ntsev snowflakes nrog crystals?
Cov lus qhia: Boil dej thiab ncuav rau hauv lub khob uas tuaj yeem tiv taus dej kub. Ntxiv ob peb teaspoons ntsev thiab do nrog cov xim txhuam kom txog thaum nws dissloves. Ntxiv ntsev ib teaspoon ntawm ib lub sij hawm kom txog thaum nws tsis yaj lawm thiab muaj ntsev muaju nyob rau hauv qab ntawm lub khob txawm tias tom qab stirring ib pliag
Yuav ua li cas ua kom cov kua qaub extraction ua haujlwm?
Lub tswv yim tom qab cov kua qaub-base extraction yog siv cov kua qaub-puag cov khoom ntawm cov organic tebchaw thiab xaiv cais lawv ntawm ib leeg thaum lawv nyob hauv kev sib tov. Hauv cov organic chemistry, cov kua qaub hu ua carboxylic acids thiab muaj cov pab pawg ua haujlwm -COOH
Yuav ua li cas koj txiav txim siab npaum li cas ntawm cov kua qaub uas yuav tsum tau neutralize lub hauv paus?
Kev daws qhov teeb meem Acid-Base Neutralization Kauj Ruam 1: Muab xam cov moles ntawm OH-. Molarity = moles / ntim. moles = Molarity x Volume. moles OH- = 0.02 M/100 milliliters. Kauj ruam 2: Xam qhov ntim ntawm HCl xav tau. Molarity = moles / ntim. Volume = moles/molarity. Volume = moles H+/0.075 Molarity
Yuav ua li cas ionic crystals tsim?
Ionic crystals yog crystalline structures uas loj hlob los ntawm ionic bonds thiab tuav ua ke byelectrostatic attraction. Ionic bonds yog atomic bondscreated los ntawm kev nyiam ntawm ob qhov sib txawv ntawm cov ions.Cov ntawv cog lus feem ntau yog nruab nrab ntawm cov hlau thiab cov hlau tsis yog hlau
Yuav ua li cas crystals sib txawv hauv cov zaub mov?
Crystal Shapes, Lwm Cov Khoom ntawm Minerals Pob Zeb tsim raws li lawv cov zaub mov loj tuaj. Txhua pob zeb hauv av pib tsim nws cov khoom zoo ntawm qhov kub thiab txias. Cov minerals sib txawv loj hlob ntawm tus nqi sib txawv. Ntau yam gases, kua, thiab lwm yam minerals tuaj yeem cuam tshuam txoj kev loj hlob ntawm cov ntxhia