Kev ua raws li kev cai hais tias number case cleaners yuav tsum tau sib ntsib hauv offset printing
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
Yog xav paub ntxiv, thov tuaj xyuas
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Nws yog feem ntau tsim nyog los ntxuav tus cwj mem ntawm tus number plays thiab daim pam thaum lub sij hawm ntxeev ntawv tshuab luam yeeb (tom qab hloov xim lossis kaw). Tshem tawm cov cwj mem zoo zoo, cov khoom xyaw ntawm cov ntawv luam tawm ntawm tus kheej yuav tsum muab daws ua ntej.
Feem ntau, qhov loj ntawm qhov offset luam ntawv yog: Cov khoom tawv 48%, cov kua roj 6%, colloidal roj 20%, quav 5%, txhuas carbonate 2%, pigment 15%.
Kev txhim kho kev ua tau zoo siv tus haum hnyav kom yaj cov khoom siv coj mus ua kom raug tshem tawm.
Cov duab nyob rau hauv cov ntawv luam tawm feem ntau yog phenolic cob, thiab feem ntau siv cov resins yog rosin-hloov phenolic resins, alkyd resins thiab polyurethane alkyd resins. Tshem lawv, nrhiav qhov hnyav uas yuav yaj ua cov ntxaib no. Raws li lub ntsiab lus ntawm kev sib thooj sib xws (piv txwv li, qhov hnyuv ntawm cov noob qaum ncaus qoob loo muaj ib yam dab tsi nrog lub noob qaum ncov qaum, cov hnoos qaum non-ncov qaum cov khoom tsis muaj hnav qaum) thiab qhov kev txhawj xeeb ntawm kev sib tw (rau lub cev tsis muaj kabmob molecular system, feem ntau cov dissolution ntawm lub polymer) Piv txwv li, cov tsis muaj teeb meem ntawm qhov hnyav thiab lub solute yog zoo li sai tau los ua kom muaj kev sib deev. Ib qho hnyav tuaj yeem nrhiav tau. Cov hnyav yuav tsum muaj cov khoom nram qab no:
1. Muaj cov teeb meem loj.
2. Cov nqi evaporation ceev npaum li cas.
3. Muaj zog permeability.
4. Qhov zoo tshaj tawm ntawm adsorption.
5. Nws yog kev tsis zoo rau tib neeg lub cev thiab yog siv los ntawm tog neeg.
6. Yuav luag tsis muaj qhov txhauv ntawm daim pam thiab tus cwj mem.
7. Them tsawg.
Qhov txheej txheem daws teeb meem ntawm phenolic resin ntawm 8 thiab 11.5, thiab qhov kev daws teeb meem ntawm lub ntsiab hnyav hauv tus neeg tu lub tsev kho mob yuav tsum yog nyob rau hauv qhov no. Lub solubility ntawm ketones, xylenes, diethylene glycol, valerolactone, thiab cov zoo li nyob rau hauv no ntau yam, thiab yog li nws yog nyiam mus xaiv ib los yog ob qho raws li ib tug hnyav. Nws tau raug kuaj thiab ua ke nrog valerolactone thiab dimethicone ua ib qho kev hnyav rau hauv fais fab thiab thaij duab kos, thiab nws qhov teebmeem zoo. Vim li no, cov khoom sib xyaw ntawm ob yog raug xaiv los ua cov kuab tshuaj; Cov tshuaj solvents li hydrocarbon xws li ng kuj xaiv tau. Cov khoom siv xws li alkane thiab high-boiling kerosene kho qhov ntsuas ntawm cov kua tag nrho; txij thaum cov dej binary qis halogenated hydrocarbons, xws li 1,1,1-trichloroethane, muaj cov kab permeable, lawv tuaj yeem tsim ua rau cov neeg ua haujlwm tu tsev; Surfactant yuav ua kom lub adsorption, ntxiab thiab cov khoom sib xyaw ntawm cov tshuaj. OP-10 yog lub plhaws pob zeb uas tsis muaj kev sib txuas nrog kev yooj yim dispersion thiab muaj peev xwm zoo hydrophilic thiab oleophobic. Nws tuaj yeem siv nrog cov anionic surfactants rau roj / dej. Hom emulsifier penetrant. Vim nws muaj ntau dua solubility hauv cov dej txias dua cov dej kub, nws yog ib qho zoo dua yog cov emulsifier. Qhov zoo tshaj plaws ntawm tus neeg sawv cev ntawm tus tu cev tuaj yeem yog raws li nram no: hnyav: 45% solubilizer: 30% penetrant 5% diluent: 15% emulsifier: 5%
Txawm li cas los xij, tus tu neeg saum toj no muaj qhov pom kev tsis zoo, uas yog, cov ntsiab lus hnyav siab, qhov kev sib koom ua haujlwm hauv kev luam ntawv yog qhov loj heev, thiab qhov chaw luam ntawv thiab kev noj qab haus huv ntawm tus neeg ua haujlwm muaj kev cuam tshuam loj heev, thiab tus nqi siab. Yog li ntawd, ntau yam luam ntawv tsuas siv roj los ua ib tus tu neeg sawv cev. Qhov no puas tsim nyog? Obviously, nws yog qhov tseeb uas tsis zoo rau kev txi rau ib puag ncig thiab kev noj qab haus huv ntawm cov neeg ua haujlwm hauv kev sib pauv rau kev txo nqi luam ntawv. Cov tebchaws nyob sab Europe thiab Asmeskas tau siv cov kev cai tiv thaiv ib puag ncig (VOC cov cai) nyob rau puag ncig xyoo 1990. Raws li txoj cai lij choj, tag nrho cov av uas siv cov tshuaj solvent organic yuav tsum ua raws li cov hauv qab no:
1. Yuav tsum tsis muaj ntxhiab tsw ntawm cov organic solvents sab nraum lub chaw ua haujlwm.
2. Lub ntsiab lus ntawm cov khoom nyob rau hauv qhov chaw ua haujlwm yuav tsum tsawg tshaj:
1) Siv lub cev ua kom muaj zog 50 m / m 3
2) Carbon monoxide 100 mg / m3
3) Nitric oxide 100 mg / m3.