Fluorescent whitening tus neeg sawv cevib txwm ua lub luag haujlwm ntawm "monosodium glutamate" hauv kev ua cov yas.Qhov sib ntxiv ntawm ob peb kaum txhiab tuaj yeem ua kom tawv nqaij thiab ci cov khoom yas thiab txhim kho cov tsos ntawm cov yas.
Muaj ntau ntau txoj hauv kev ntxiv cov tshuaj ntxuav hniav dawb, tab sis lawv txoj kev siv feem ntau yog muab faib ua peb pawg: kev ntxuav hniav dawb, ntub dej ntxuav hniav dawb thiab masterbatch whitening.
Qhuav whitening
Yas qhuav whitening yog ntxiv ib qho nyiaj ntawm fluorescent whitening agent qhuav hmoov ncaj qha mus rau cov yas substrate ua ntej molding, sib tov nrog cov yas substrate ua ntej, thiab extrude qhov sib tov thaum lub extruder ncav cuag cov yas melting kub.Qhuav rau hauv lub hau ntswj kom cov yas whitening tus neeg saib xyuas tusyees faib nyob rau hauv lub yaj, thiab thaum kawg nqa tawm granulation los yog compression molding.
Cov txheej txheem ziab khaub ncaws ntxhua khaub ncaws yog siv rau kev txhaj tshuaj molding whitening ntawm nruj PVC, polyethylene, polypropylene, ABS thiab lwm yam thermoplastic resins.Fluorescent whitening agents siv nyob rau hauv qhuav whitening agents kuj pheej yig, tab sis muaj qhov tsis zoo ntawm cov plua plav loj loj thiab ib puag ncig muaj kuab paug.
Teeb meem whitening
Txhawm rau txhim kho qhov cuam tshuam ntawm kev ntub dej ntub dej, qee zaum yuav tsum tau ntxiv qee qhov ntawm binder rau cov yas ntxuav hniav dawb, kom cov yas ntxuav hniav dawb tuaj yeem ua tau zoo dua rau saum npoo ntawm cov khoom, thiaj li txo nws cov plua plav. ya thiab muaj kuab paug.
Cov yas brightener kuj tuaj yeem tawg rau hauv cov tshuaj pabcuam thiab ntxiv rau hauv cov khoom siv hauv daim ntawv pabcuam dispersion.Piv txwv li, nws tuaj yeem siv rau hauv cov mos polyvinyl chloride (PVC), uas tuaj yeem tsim ua 10% phthalic acid.Tom qab cov tshuaj dioctyl ester plasticizer, nws tau ntxiv rau hauv cov khoom siv.
Nyob rau hauv ntub whitening, lubyas whitening tus neeg sawv cevyog ib qho zoo heev dispersed slurry, uas muaj qhov tsis zoo ntawm kev nplaum vim tias cov organic hnyav uas tsis yog-volatile yog tov rau hauv plasticizer.Hony Chemical feem ntau pom zoo rau txoj kev ntxuav hniav dawb rau PVC mos.
Masterbatch dawb
Tam sim no, kev siv "masterbatch" hauv plastics tau dhau los ua ib qho tseem ceeb ntawm cov xim yas.Thaum siv cov xim masterbatch, ntev npaum li cov xim masterbatch thiab resin sib xyaw ua ke sib npaug, lawv tuaj yeem siv ncaj qha rau molding cov khoom yas.
Ib qho me me ntawm stirring tsuas yog yuav tsum tau ua los ntawm tes.Nyob rau hauv cov ntaub ntawv ntawm ib tug loj npaum li cas ntawm kev ua, nyob rau hauv thiaj li yuav xyuas kom meej lub dispersibility ntawm lub masterbatch, mechanical stirring yuav siv tau.Tom qab cov xim masterbatch yog mechanically tov nrog cov yas resin, nws tuaj yeem xa mus rau lub tshuab txhaj tshuaj molding nrog cov khoom ua ntej molding, thiab cov xim yog pre-molded tib lub sijhawm.
Kev ceev faj rau kev siv
Ua ntej, tus nqi ntawm fluorescent whitening yuav tsum tau tswj kom zoo.Tus nqi ntawm cov tshuaj ntxuav hniav dawb ntxiv tsis zoo li qhov ua tau.Cov nyiaj ntau dhau yuav ua rau cov yas daj. Thib ob, lub ci ci thiab cov khoom siv raw yuav tsum tau nplawm tusyees.
Nov yog ob peb txoj hauv kev siv cov yas ci ci, thiab qhov tshwj xeeb koj yuav tsum xaiv raws li koj tus kheej qhov xwm txheej.Yog tias koj muaj lus nug txog kev sivyas brighteners, thov koj txhob xav li cas rau hauv xov tooj board.
Post lub sij hawm: Mar-26-2022