Vim li cas Dej-raws li Ink yog ib tus phooj ywg ib puag ncig?

Nrog rau kev nce ntawm tib neeg kev paub txog ib puag ncig, lub teb chaws tau muab ntau yam kev xav tau thiab kev txwv rau kev nyiam huv thiab kev tiv thaiv ib puag ncig hauv ntim thiab luam ntawv. Tshwj xeeb tshaj yog rau kev luam ntawv ntawm cov khoom ntim khoom noj, kev siv cov ntawv ntim dej uas muaj kuab paug me me, muaj kuab paug tsawg lossis txawm tias tsis muaj kuab paug tau dhau los ua qhov kev xav tau ntawm kev tsim cov ntim ntsuab. Dej-raws li tus number case yog hais txog tus number case npaj los ntawm kev sib txuas cov dej-raws li polymer resins, pigments, dej, thiab ntxiv co-solvents los ntawm cov txheej txheem ntawm lub cev thiab tshuaj, hu ua dej-raws li number case. Raws li hom tshiab ntawm ntim thiab luam ntawv cov ntaub ntawv, qhov zoo tshaj plaws ntawm dej-raws li number case yog tias nws tsis muaj volatile organic solvents.

Nws siv txo cov nqi ntawm cov organic tebchaw (VOCs), tsis ua mob rau kev noj qab haus huv ntawm number case manufacturers thiab luam ntawv, thiab txhim kho qhov zoo ntawm ib puag ncig. Yog li ntawd, nws yog lub npe hu ua environmentally friendly number case. Qhov loj tshaj plaws ntawm cov kua dej raws li tus cwj mem yog tias nws tsis ua qias neeg ib puag ncig, tsis muaj kev cuam tshuam rau tib neeg kev noj qab haus huv, tsis yooj yim rau hlawv, thiab muaj kev nyab xeeb zoo. Nws tuaj yeem tsis tsuas yog txo cov toxicity ntawm qhov seem ntawm qhov chaw luam ntawv, ua rau cov khoom siv luam ntawv pom tseeb thiab yooj yim, tab sis kuj txo qhov kev pheej hmoo ntawm hluav taws los ntawm hluav taws xob zoo li qub thiab cov kuab tshuaj tsw qab. Ntxiv rau nws cov yam ntxwv tiv thaiv ib puag ncig, dej-raws li number case kuj muaj cov khoom luam ntawv zoo. Dej-raws li number case yog ruaj khov, tsis corrode lub phaj, yog ib qho yooj yim rau kev khiav lag luam, pheej yig, muaj adhesion zoo tom qab luam ntawv, muaj zog dej tsis kam, thiab dries sai sai (kev luam ntawv ceev tuaj yeem ncav cuag 150-200} m / min). Ntxiv nrog rau kev siv hauv gravure printing, dej-raws li number case kuj yog tsim rau flexographic luam ntawv thiab tshuaj ntsuam luam ntawv, uas muaj peev xwm loj hlob.

Thaum siv dej-raws li tus cwj mem ntawm ntim khoom noj, yuav tsum tau saib xyuas cov teeb meem hauv qab no: Ua ntej, yuav tsum tau them nyiaj rau kev tswj hwm tus nqi pH. Tus nqi pH yuav tsum tswj ntawm 8.0 thiab 9.5. Yog hais tias tus nqi pH ntawm cov dej raws li tus number case siab dhau lawm, cov alkalinity yuav muaj zog heev, uas yuav cuam tshuam rau kev ziab ceev ntawm tus number case, uas ua rau cov av nplaum rau sab nraub qaum thiab cov dej tsis zoo; Yog tias tus nqi pH qis dhau lawm, cov alkalinity yuav tsis muaj zog, uas yuav ua rau kom cov viscosity ntawm tus number case, ua kom ceev ceev kom qhuav, thiab yooj yim ua rau muaj qhov tsis xws luag xws li cov paib qias neeg, muab tshuaj txhuam thiab npuas. Tus nqi pH ntawm dej-raws li tus number case yog tswj los ntawm amine compounds. Thaum lub sij hawm luam ntawv txheej txheem, vim tsis tu ncua volatilization ntawm amines nyob rau hauv lub binder, tus nqi pH yuav txo, cuam tshuam rau luam ntawv zoo. Hauv kev tswj hwm tiag tiag, ntawm ib sab, cov tshuaj amine yuav tsum raug zam kom ntau li ntau tau, xws li npog lub hau ntawm lub tank; Ntawm qhov tod tes, cov stabilizers yuav tsum tau ntxiv rau hauv lub tank tsis tu ncua thiab kom muaj nuj nqis.

Thaum tus nqi pH qis, pH stabilizers lossis me me ntawm cov tshuaj alkaline tuaj yeem ntxiv; Thaum tus nqi pH siab, cov kuab tshuaj los yog cov diluents tuaj yeem muab ntxiv rau polar dilution. Qhov thib ob, kev tswj qhov kub thiab av noo. Qhov kub thiab av noo ntawm lub tshuab luam ntawv rhiav yog ze ze rau kev ziab thiab xim ntawm cov khoom siv luam ntawv hauv dej. Piv nrog rau 65% txheeb ze humidity, lub sij hawm ziab yog yuav luag ob zaug ntev dua thaum cov txheeb ze humidity ncav cuag 95%. Nyob rau tib lub sijhawm, dryness thiab av noo ntawm substrate nws tus kheej kuj tseem cuam tshuam ncaj qha rau lub sijhawm ziab ntawm cov khoom luam tawm. Thib peb, qhov degree ntawm qhov cua thiab cov txheej txheem stacking ntawm cov ntaub ntawv luam tawm. Txij li cov pa oxygen los yog tshuab yog ib qho tseem ceeb uas txhawb cov oxidation polymerization thiab volatilization ntawm cov kua dej raws li tus number case thiab tsim cov ntaub ntawv cov ntaub ntawv, cov qib ntawm qhov cua nyob rau hauv lub tshuab luam ntawv rhiav thiab cov txheej txheem stacking ntawm cov ntaub ntawv luam tawm kuj yuav cuam tshuam qhov ziab ceev ntawm tus cwj mem. Plaub, cov khoom siv luam ntawv. Tus nqi pH ntawm cov ntaub ntawv luam ntawv kuj tseem cuam tshuam rau qhov ziab thiab ci ntawm cov kua dej raws li tus number case. Thaum dej-raws li tus number case luam tawm ntawm daim ntawv, nws yuav cuam tshuam los ntawm pH tus nqi ntawm daim ntawv luam ntawv.

Thaum cov kua qaub ntawm daim ntawv siab, tus neeg sawv cev sib txuas siv los ua tus neeg sawv cev ziab hauv cov dej raws li tus cwj mem tsis ua haujlwm, thiab cov alkali hauv cov kua dej raws li tus cwj mem yog neutralized, uas ua rau cov txheej txheem ziab tuaj ntxov; Thaum cov alkalinity ntawm daim ntawv siab, dej-raws li number case dries maj mam, uas qee zaum txwv cov dej-raws li number case los ntawm kev ua dej-tiv taus. Vim muaj kev tiv thaiv ib puag ncig zoo ntawm cov kua dej raws li tus cwj pwm, cov teb chaws thiab cheeb tsam tau tsim kho tam sim no ua haujlwm hnyav los tsim thiab siv cov kua dej raws li tus cwj pwm los hloov cov kuab tshuaj raws li cov kuab tshuaj. Ntim tshuab luam ntawv nrog dej-raws li luam ntawv raws li lub hom phiaj kev loj hlob tseem ceeb tau dhau los ua kev sib tw thoob ntiaj teb. Los ntawm txoj kev loj hlob ntawm kev lag luam ntim thoob ntiaj teb, dej-raws li tus number case tau tsim los ntawm ib lub thawv ntawv rau ntau lub substrates thiab ntau xim overprinting.