Hauv kev tsim khoom thiab cov ntaub ntawv tshawb fawb, kev nrhiav kev txhim kho kev zoo nkauj thiab kev ua haujlwm ntawm cov khoom tsis tas yuav xaus. Ib qho kev tsim kho tshiab uas tau txais txiaj ntsig loj heev yog kev siv cov khoom siv kho qhov muag, tshwj xeeb hauv cov yas. Txawm li cas los xij, ib lo lus nug uas tshwm sim yog seb qhov muag pom qhov muag puas zoo ib yam li tshuaj dawb. Kab lus no yog tsom rau demystify cov ntsiab lus thiab tshawb nrhiav lawv cov haujlwm, kev siv, thiab qhov sib txawv.
Dab tsi yog optical brightener?
Optical brighteners, tseem hu ua fluorescent whitening agents (FWA), yog cov tebchaw uas nqus ultraviolet (UV) lub teeb thiab rov emit nws li pom xiav lub teeb. Cov txheej txheem no ua rau cov khoom zoo li dawb thiab ci dua rau tib neeg lub qhov muag. Optical brighteners yog siv nyob rau hauv ntau yam kev lag luam, xws li textiles, detergents thiab plastics.
Nyob rau hauv cov ntaub ntawv ntawm plastics, kho qhov muag brighteners tau ntxiv thaum lub sij hawm tsim cov txheej txheem los txhim kho qhov pom kev pom ntawm cov khoom kawg. Lawv muaj txiaj ntsig tshwj xeeb hauv kev ua cov khoom yas kom huv si thiab muaj zog dua, them nyiaj rau cov xim daj lossis dulling uas yuav tshwm sim dhau sijhawm.
Optical brighteners ua haujlwm li cas?
Cov kev tshawb fawb tom qab kho qhov muag ci muaj nws cov hauv paus hniav hauv fluorescence. Thaum lub teeb ultraviolet tawg rau saum npoo ntawm cov khoom yas uas muaj cov khoom siv kho qhov muag, lub compound absorbs lub teeb ultraviolet thiab rov emits nws li pom xiav. Lub teeb xiav no tshem tawm cov xim daj daj, ua rau cov yas zoo nkauj dua thiab muaj zog dua.
Kev ua tau zoo ntawmoptical brightenersnyob ntawm ntau yam, nrog rau hom yas, qhov concentration ntawm lub brightener, thiab cov formulation tshwj xeeb ntawm cov compound. Cov khoom siv dav dav siv hauv cov yas xws li stilbene derivatives, coumarins thiab benzoxazoles.
Kev siv cov tshuaj fluorescent whitening agents hauv plastics
Optical brighteners yog dav siv hauv cov khoom yas, suav nrog:
1. Ntim Cov Khoom Siv: Ua kom lub ntim ntim ntau dua qhov pom tau zoo thiab txhim kho qhov zoo ntawm cov khoom sab hauv.
2. Cov khoom siv hauv tsev: xws li cov thawv ntim khoom, cov khoom siv, rooj tog zaum, thiab lwm yam, ua kom lub ntsej muag huv thiab ci.
3. Auto Parts: Txhim kho qhov zoo nkauj ntawm sab hauv thiab sab nrauv.
4. Cov Khoom Siv Hluav Taws Xob: Ua kom muaj lub ntsej muag zoo nkauj, niaj hnub saib hauv tsev thiab lwm yam khoom.
Puas yog optical brighteners tib yam li tshuaj dawb?
Cov lus teb luv luv yog tsis muaj; optical brighteners thiab tshuaj dawb tsis zoo ib yam. Thaum ob qho tib si siv los txhim kho cov tsos ntawm cov khoom siv, lawv ua haujlwm los ntawm cov txheej txheem sib txawv thiab ua haujlwm sib txawv.
Dab tsi yog bleach?
Bleach yog ib qho tshuaj lom neeg feem ntau siv los tua kab mob thiab ua kom tawv nqaij. Cov tshuaj bleach feem ntau yog chlorine bleach (sodium hypochlorite) thiab oxygen bleach (hydrogen peroxide). Bleach ua haujlwm los ntawm kev rhuav tshem cov tshuaj sib txuas ntawm cov stains thiab pigments, tshem tawm cov xim ntawm cov ntaub ntawv zoo.
Qhov sib txawv tseem ceeb ntawm Optical Brighteners thiab Bleach
1. Mechanism ntawm kev ua:
- Optical Brightener: Ua kom cov ntaub ntawv zoo li dawb thiab ci dua los ntawm kev nqus UV rays thiab rov ua dua lawv li pom lub teeb xiav.
- Bleach: Tshem tawm cov xim ntawm cov khoom los ntawm kev sib tsoo cov xim thiab cov xim.
2. Lub hom phiaj:
- Fluorescent Whitening Agents: Siv feem ntau los txhim kho qhov pom kev pom ntawm cov ntaub ntawv los ntawm kev ua kom lawv zoo li huv thiab muaj zog dua.
- Bleach: Siv los ntxuav, tshuaj tua kab mob thiab tshem tawm stain.
3. Daim ntawv thov:
- Fluorescent Whitening Agent: Feem ntau siv hauv plastics, textiles thiab detergents.
- Bleach: Siv nyob rau hauv cov khoom siv tu tsev, ntxhua khaub ncaws thiab ntxhua khaub ncaws.
4. Tshuaj muaj pes tsawg leeg:
- Fluorescent Whitening Agents: Feem ntau cov organic tebchaw xws li stilbene derivatives, coumarins thiab benzoxazoles.
- Bleach: Inorganic compounds xws li sodium hypochlorite (chlorine bleach) lossis organic compounds xws li hydrogen peroxide (oxygen bleach).
Kev saib xyuas kev nyab xeeb thiab ib puag ncig
Optical brightenersthiab bleaches txhua tus muaj lawv tus kheej kev nyab xeeb thiab kev txhawj xeeb ib puag ncig. Optical brighteners feem ntau suav hais tias muaj kev nyab xeeb rau kev siv hauv cov neeg siv khoom, tab sis muaj kev txhawj xeeb txog lawv qhov kev pheej hmoo ntawm ib puag ncig thiab muaj peev xwm cuam tshuam rau lub neej hauv dej. Bleach, tshwj xeeb tshaj yog cov tshuaj chlorine bleach, yog corrosive thiab tsim kev puas tsuaj los ntawm cov khoom xws li dioxins, uas muaj teeb meem rau tib neeg noj qab haus huv thiab ib puag ncig.
Hauv kev xaus
Txawm hais tias optical brighteners thiab tshuaj dawb tuaj yeem tshwm sim zoo sib xws vim lawv cov teebmeem ua kom tawv nqaij, lawv cov txheej txheem, lub hom phiaj, thiab kev siv yog qhov sib txawv. Optical brighteners yog cov sib xyaw tshwj xeeb uas siv los txhim kho qhov pom kev pom ntawm cov yas thiab lwm yam khoom siv los ntawm kev ua kom lawv zoo nkauj thiab ci dua. Nyob rau hauv sib piv, tshuaj dawb yog ib tug haib nqus tsev vacuum siv los tshem tawm stains thiab tshuaj tua kab mob.
Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau cov tuam txhab, cov neeg siv khoom, thiab txhua tus neeg koom nrog hauv cov ntaub ntawv tshawb fawb lossis kev tsim khoom. Los ntawm kev xaiv qhov sib xyaw kom haum rau daim ntawv thov raug, peb tuaj yeem ua tiav qhov xav tau zoo nkauj thiab ua haujlwm tau zoo thaum txo qis qhov cuam tshuam tsis zoo rau kev noj qab haus huv thiab ib puag ncig.
Post lub sij hawm: Sep-23-2024