Peb paub tias cov khaub ncaws dawb qub thiab cov ntaub ntawv luam tawm, cov hmoov txhuv nplej siab, thiab cov nplej feem ntau tawm lub teeb daj, ua rau tib neeg xav tias 'daj'.Yog hais tias tsim nyog tus nqi ntawm cov tshuaj fluorescent whitening ntxiv rau lub sij hawm no, cov nofluorescent whitening agentsyuav emit xiav los yog purplish xiav lub teeb tom qab absorbing pom ultraviolet rays, tsim ib tug ntxiv xim nrog lub yellowish lub teeb nqa los ntawm cov khoom nws tus kheej, yog li tshem tawm cov thawj "daj" tshwm sim thiab ua khaub ncaws thiab luam tawm cov ntaub ntawv uas Ameslikas saib outdated Cov hmoov txhuv nplej siab thiab nplej. tshwm sim dawb li tshiab (ceeb toom: ntxiv cov fluorescent brighteners rau cov hmoov txhuv nplej siab thiab cov nplej tsis raug cai!).Qhov no yog lub hauv paus ntsiab lus whitening ntawm fluorescent whitening agents.Cias muab, tus neeg sawv cev fluorescent whiteningCBS-Xsiv cov xim kho qhov muag kom ua kom dawb, ci, lossis ci xim dawb lossis xim xim.Nws tsis muaj tshuaj lom neeg cov tshuaj tiv thaiv nrog rau cov khoom, tab sis tsuas yog tso siab rau qhov kev txiav txim kho qhov muag kom ua kom cov xim dawb ntawm cov khoom.Yog li, fluorescent whitening agent CBS-X tseem hu ua "optical whitening agent" lossis "white dye".
Puas yog qhov muaj fluorescence yuav tsum txhais tau tias ntxiv cov fluorescent whitening agent CBS-X?
Raws li tau hais los saum no, fluorescence tshwm sim yog lub cev tshwm sim uas tuaj yeem tshwm sim los ntawm cov khoom siv fluorescent, xws li fluorescein hauv hluav taws;Tej zaum kuj tseem muaj ntau yam khoom siv fluorescent tau los ntawm cov khoom siv dag zog, xws li fluorescent inks, fluorescent coatings, fluorescent pens, fluorescent plastics, thiab lwm yam khoom uas xav tias yog cov khoom siv fluorescent, nrog rau cov fluorescent whitening agents.Fluorescent whitening agents tsuas yog ib yam tshwj xeeb ntawm cov tshuaj fluorescent nrog rau cov xim dawb thiab ci ntsa iab ntawm ntau hom tshuaj fluorescent complex.Yog li ntawd, hais nruj me ntsis, cov tshuaj fluorescent tsis sib npaug rau cov fluorescent brighteners, thiab kev soj ntsuam fluorescence tshwm sim tsis tas txhais tau tias ntxiv cov fluorescent brighteners !!!
Fluorescence phenomenon ≠ muaj nyob ntawmfluorescent whitening agent CBS-X
Fluorescent brighteners tsim fluorescence phenomena (ntawm tej wavelengths)
Zoo li cov khoom noj ntxiv, ntau yam ntawm fluorescent brighteners yog complex.Raws li kev siv, nws tau muab faib ua fluorescent brighteners rau ntawv ua, yas thiab cov ntaub ntawv muaj pes tsawg leeg, textiles, detergents, inks, adhesives, thiab lwm yam kev siv.
Raws li kev faib tawm ntawm cov khoom ionic, fluorescent brighteners tuaj yeem muab faib ua cov tsis muaj ionic brighteners, anionic brighteners, cationic brighteners, thiab amphoteric brighteners.
Raws li cov qauv tshuaj, nws tuaj yeem muab faib ua tsib pawg: hom stilbene, hom coumarin, hom pyrazoline, hom benzoxazole, thiab hom phthalimide imide.
Raws li dej solubility, nws tuaj yeem muab faib ua ob pawg: dej-soluble thiab insoluble.Dej soluble fluorescent whitening agents yog siv rau cov ntawv dawb, coatings, ntxhua khaub ncaws, thiab paj rwb ntaub, thaum cov dej insoluble fluorescent whitening agents yog siv rau cov khoom siv ntxuav hniav dawb xws li tshuaj fibers thiab yas.
Tam sim no, muaj kwv yees li 15 qhov kev teeb tsa tshuaj thiab ntau dua 400 fluorescent brighteners.Tom qab xyoo ntawm scouring cov xuab zeb, qee qhov twb tau muab tshem tawm, thiab tam sim no muaj ntau ntau ntau hom kev siv tseem raug tsim thiab siv hauv ntiaj teb.
Post lub sij hawm: May-26-2023