Cov nyhuv ntawm tus nqi pH ntawm offset ntawv luam tawm ntawm kev luam zoo
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.
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1. Lub pH ntawm daim ntawv yog siab dhau
Thaum lub pH ntawm daim ntawv siab dhau lawm, cov tshuaj lom alkaline nyob rau hauv daim ntawv yuav tas mus rau hauv kev dampening solution, neutralizing ib feem ntawm cov kua qaub, thiab raising cov pH ntawm dampening kua los tua cov kua qaub. Alkaline, txo cov nro ntawm qhov kev daws teeb meem, ua kom accelerating cov emulsification ntawm tus number case, ua rau tus number case separation kom qeeb, thiab tseem cuam tshuam qhov kev hloov ntawm tus cwj pwm. Yog tias cov xaim mem ntawm lub xaj plaub hau loj tuaj, qhov xim ntawm cov khoom luam tawm yuav dim thiab cov qauv yuav tsis meej. Thaum muab tus cwj mem ntawm lub duav tinting txo, tus nqi ntawm tus number case yuav tsum tau nce, ua li rhuav tseg qhov nyiaj tshuav ntawm tus number case offset, uas ua rau cov dots raug teev, sib tw, thiab txawm tshwm sim. Paj phaj, paste phaj thiab khov dua tshiab rau cov tub ntxhais hluas txawv txawv.
Yog tias cov pH ntawm daim ntawv siab dhau lawm, lub tshuab luam ntawv ntawm cov ntawv luam tawm yuav raug txo kom tsawg, vim tias lub zog ntawm daim ntawv yog qhov tseem ceeb ntawm cov khoom sib txuas ntawm fiber, cov ntaub cuv thiab cov roj hmab siv, thiab nws yog qhov nyuaj ua kom tiav p≥x + u + n + w hauv kev luam ntawv. , p yog qhov sib txuas ntawm lub fibre thiab cov zauv thiab cov roj hmab, x yog qhov adhesion ntawm tus cwj mem rau daim ntawv, u yog lub siab tawv me, n yog viscosity ntawm daim pam, thiab w yog cov kev sib xyaw cov kev sib tw, tshwm sim ntawm kev ntog hmoov thiab ntog cov plaub hau yog tsis pom nriav. Cov fibers thiab cov zoo li uas yog kas tsev txawb yog pauv mus rau daim pam. Thaum daim pam kheej lub plhaub yog sib txuas nrog lub phom lub tog raj kheej, cov khoom siv alkaline yog xa mus rau lub phaj ntawv, ua rau lub tsho ntawm cov ntawv luam tawm yuav tsis zoo, thiab tus neeg ua yeeb yaj duab tsim hauv daim duab nrig yog eroded. Los txo qhov kev lag luam ntawm lub tshuab luam ntawv.
2. Cov pH ntawm daim ntawv yog qhov tsawg dhau
Tsuas qes ntawv pH yuav ua rau kom poob qis hauv pH ntawm cov kua txhuam hniav. Thaum lub acidity ntawm dampening kua enhanced, nws yuav ua rau kom zij ceev ntawm tus number case, ua rau cov neeg pluag ziab ntawm cov khoom luam tawm, vim tias qhov ntau dua concentration ntawm H + hauv dampening kua thiab hlau ntsev hauv cov roj ziab qhuav, yog li inhibiting qhov ziab ceev ntawm tus number case. . Xyaum tau pom tias thaum lub pH tsis dhau, lub tshuab yuav qeeb qeeb dua hauv daim ntawv acid ntau dua ntawm daim ntawv alkaline, li no tiv thaiv thiab rhuav tshem cov oxidative polymerization ntawm tus number case. Yuav kom ntsuas kom zoo ntawm cov ntawv luam tawm, cov pH ntawm daim ntawv yuav tsum tau ntsuas. Thaum lub pH ntawm daim ntawv yog tsawg heev, lub pH ntawm dampening daws yuav tsum me ntsis nce. Muaj ob txoj kev:
(1) Cov ntawv ntsuas phaj tag nrho
Daim ntawv sau ua ntej xub ntub hauv dej distilled, tom qab ntawd cov kua dej haus tau rho tawm, thiab cov pH raug ntsuas nrog lub ntsuas pa pH. Txoj kev no muaj qee tus nqi siv rau ntawv thiab ntawv tsis yog ntawv.
(2) Ntawv phaj pH teeb hom
1Electrical ntsuas txoj kev ntsuas: ntsuas qhov sib txawv ntawm qhov qhia tau electrode thiab siv cov electrode hauv qhov kev daws, qhov peev xwm ntawm qhov reference electrode yog qhov tseem ceeb, thiab qhov peev xwm ntawm qhov ntsuas electrode hloov raws li tus nqi pH ntawm kev ntsuas, thiab ces tus nqi pH yog siv dua. Lub pH ntawm kev daws tau ntsuas ncaj qha los ntawm qhov ntsuas.
2-xim piv txwv: Ua ntej, cov nplais ntawm daim ntawv yog wetted nrog cov dej distilled, thiab tom qab ntawd ces qhov ntom ntawm cov qauv no poob nrog qhov taw qhia txog acid, pib hloov xim thiab muab piv nrog tus qauv xim ntawm pH .
3 titration method: tus nqi pH ntawm daim ntawv yog qhia los ntawm pH ntawm cov tshuaj tov ntawm cov qauv. Lub acidity ntawm acidic daws yog qhia raws li feem ntawm sulfuric acid, thiab alkalinity ntawm alkaline kua yog qhia raws li feem ntawm sodium hydroxide.