Indlela yokusombulula ingxaki yamabala amhlophe kwiphepha lekopi elingenakhabhoni?

Iphepha lokukopa elingenakhabhoni lahlulwe libe liphepha eliphezulu, eliphakathi kunye nephepha elisezantsi. Iphepha lokukopa elingenakhabhoni lisetyenziswa kakhulu ukwenzela ukuba libelula, libelula, kunye nococeko. Inkangeleko, isiphumo sonikezelo lombala, ukusebenza kwe-inki, kunye namandla omphezulu wephepha lokukopa elingenakhabhoni zonke ziya kuchaphazela isiphumo sokusetyenziswa kwephepha lekopi elingenacarbon. Ukongeza kumhlophe wokuqala kunye nomhlophe ophezulu, ukubonakala kwephepha lephepha le-carbonless linemibala efana nephuzi, eluhlaza okwesibhakabhaka, ebomvu kunye eluhlaza. Nangona inkangeleko yephepha elinemibala ye-carbonless copy lihle, kulula ukubangela iingxaki ezisemgangathweni, njengamabala amhlophe ephepheni.

 

iphepha lokukhuphela elingenakhabhoni-2

 

Ingxaki yomgangatho webala elimhlophe lephepha lokukhuphela elingenakhabhoni lenzeka ikakhulu kwicala le-CF ephepheni. Kukho izinto ezininzi ezibangela amabala amhlophe kwicala leCF. Ngokuqhelekileyo, kukho le miba ilandelayo:

 

Umgangatho ophantsi we-dispersant uya kukhokelela kwisiphumo esibi sokusasazeka kwe-pigment kwipeyinti; xa inani le-dispersant lincinci, i-pigment particles engagqithwanga yi-dispersant iya kujikeleza kwaye iqhube ngenxa yokutsala kombane; xa isixa se-dispersant sikhulu kakhulu, i-dispersant egqithisileyo iya Kutshabalalisa umaleko ophindwe kabini wombane owenziwe yi-pigment, ebangela ukusasazwa okungalinganiyo kweentlawulo kwaye kubangele imvula. Xa i-coating isetyenziswe kumatshini, iinqununu ze-pigment ezidibeneyo azikwazi ukugquma kwaye zibangele amabala amhlophe kwiphepha. Elona nani lifanelekileyo le-dispersant linokumiselwa ngohlalutyo lovavanyo, kwaye ngokuqhelekileyo inani le-dispersant elongeziweyo limalunga ne-0.5% -2.5% ye-pigment.

 

Ixabiso le-pH linempembelelo eqinisekileyo kwi-dispersion (uzinzo) yeiphepha elingenakhabhoni ibala. Xa i-pigment isasazwa, i-alkali inokongezwa ukulungisa i-pH ukuba ibe yi-alkaline, ngokukodwa phakathi kwe-7.5 kunye ne-8.5.

 

I-Defoamers isusa amaqamza omoya kwipeyinti. Nangona kunjalo, i-defoamer ngokuqhelekileyo yinto ephilayo enzima ukuyinyibilika emanzini. Ukusetyenziswa ngokugqithiseleyo okanye indlela yokongeza engafanelekanga iya kubangela ukuba i-defoamer yenze "i-cloud point" kwiphepha, eliya kubangela ukuba i-CF ifake isicelo kwaye ifake amabala amhlophe. Le ngxaki ingasombululwa ngokuhlanjululwa ngokufanelekileyo kunye nokutshiza kumphezulu wepeyinti ngamaqamza omoya.

 

Iingubo ze-CF zinamaqamza omoya amaninzi, kwaye xa i-coating isetyenziswa, amaqamza agqabhuka kwiphepha, abangela amabala amhlophe. Esi sesona sizathu siphambili sokuba kutheniiphepha lokukopa elingenakhabhoni kubangela isifo sephepha elimhlophe. Isisombululo kukongeza i-inhibitor ye-foam ukukhusela ukuveliswa kweebhubhu xa i-pigment ihlakazwa, okanye ukongeza i-defoamer ukuphelisa iibhubhu esele zenzekile.

 

Ezinye izinto ezincedisayo (ingakumbi izinto ezincedisayo ze-organic) zongezwa kwiingubo ze-CF, ukuba umgangatho we-lubricant awulungile, kuya kubangela ukusasazwa kakubi kwaye unamathele ephepheni, okubangela ukusilela kweengubo ze-CF ukwenza amabala amhlophe. Ngoko ke sebenzisa izixhobo eziluncedo zeekhemikhali ezisemgangathweni kangangoko.

iphepha elingenakhabhoni


Ixesha lokuposa: Dec-05-2022