Iphepha lokukhuphela elingenaCarbon lihlulwe libe kwiphepha eliphezulu okanye iphepha le-CB (iPhepha eliNgqunyiweyo), iphepha eliphakathi okanye iphepha leCFB (iCoated Front & BackPaper) kunye nephepha elisezantsi okanye iphepha leCF (iPhepha eliMbindi eliNgqunyiweyo).
Amacandelo aqhelekileyo eengubo ze-CB kunye neemfuno zabo zokusebenza:
Iingubo ze-CB ikakhulu zenziwe nge-microcapsules ye-agent ye-chromogenic, i-spacers, i-adhesives, izongezo kunye namanzi.
1. I-Microcapsules iyona nto ibaluleke kakhulu kwiingubo ze-CB. Umgangatho kunye nomthamo wee-microcapsules zihambelana ngokusondeleyo nophuhliso lombala wephepha lekopi elingenakhabhoni. Umxholo oqinileyo we-microcapsules ngokubanzi yi-40% ukuya kwi-50%, ikakhulukazi iqulunqwe ngeoli yedayi engenambala, izixhobo zodonga kunye nokwakheka kwe-Emulsifier. Umgangatho we-microcapsules uchaphazela kakhulu umphumo wokunikezela ngombala, ukukhawuleza okukhanyayo, kunye nongcolisekoiphepha lokukopa elingenakhabhoni.
2. Ukusetyenziswa kwe-spacers kwiingubo ze-CB kukuthintela ukuphuka kwangaphambili kwe-microcapsules phantsi kweempembelelo zamandla angaphandle ngexesha lokudibanisa kunye nenkqubo yokugqoka. Isitashi sengqolowa ngoku sesona sikhewu sisetyenziswa kakhulu kwiingubo zeCB. Isalathisi somgangatho we-spacer ubukhulu be-particle size. Ngokuqhelekileyo kufuneka ukuba i-spacer ene-particle size kuluhlu lwe-15-25 μm kufuneka iphendule kwi-60-80%, kwaye ubungakanani becala akufanele bube bukhulu kune-40 μm. Ubungakanani be-spacer ngokuqhelekileyo yi-30% ukuya kwi-50% yexabiso le-microcapsules (umlinganiselo owomileyo). Inkulu isayizi ye-particle ye-microcapsules okanye ubuthathaka amandla e-microcapsules, i-spacer iyadingeka.
3. Ngokuqhelekileyo kukho iindidi ezimbini ze-adhesives ezisetyenziswa kwiingubo ze-CB, enye i-carboxylated styrene-butadiene latex kwaye enye i-modified starch. Kukho nabavelisi abambalwa abasebenzisa i-polyvinyl alcohol (PVA) enestatshi esilungisiweyo. Phakathi kwabo, ubungakanani be-carboxylated styrene-butadiene latex ngokubanzi yi-3% ukuya kwi-4% (yepeyinti, umlinganiselo owomileyo), kunye nesixa sesitashi esilungisiweyo ngokuqhelekileyo si-10% ukuya kwi-12% (yepeyinti, umlinganiselo owomileyo).
4. Izongezo ezisetyenziswe kwiingubo ze-CB ziquka i-dispersants, i-sodium carboxymethylcellulose (CMC) kunye ne-preservatives. I-disperant yi-polyacrylate ye-sodium, i-dosage ngokubanzi yi-0.2% ukuya kwi-0.3% (yepeyinti, umlinganiselo owomileyo), kunye ne-dosage ye-sodium carboxymethylcellulose (CMC) ngokubanzi yi-0.5% ukuya kwi-1.5% (Ukwenzela iingubo kunye nomlinganiselo owomileyo), ingaba uhlengahlengiso ngokweemfuno ze-viscosity zokwaleka. Isixa sezinto ezigcinayo ngokuqhelekileyo yi-0.5% (kwisitatshi, umlinganiselo owomileyo).
Amacandelo aqhelekileyo eengubo zeCF kunye neemfuno zabo zokusebenza:
Iingubo ze-CF ubukhulu becala zenziwe ngee-pigments, abaphuhlisi bemibala, izinto zokuncamathelisa, izongezo kunye namanzi.
1. Injongo yokusebenzisa ii-pigments zokwaleka kwiiphepha lokukopa elingenakhabhoni kukugcwalisa nokugquma umphezulu ongalinganiyo wephepha lesiseko, ukuphucula ubumhlophe kunye nokungafihli kwephepha, ukuphucula ukugudiseka kunye nokucwebezela komphezulu wephepha, kwaye wenze umphezulu wephepha ube ne-uniform kunye ne-inki elungileyo, ekugqibeleni ufumane okulungileyo. isiphumo soshicilelo. Ezona pigments zisetyenziswa kwii-coatings ze-CF yi-kaolin kunye ne-calcium carbonate.
2. Umphuhlisi wombala osetyenziswe kwiingubo ze-CF ikakhulukazi i-phenolic resin, kunye nenani elincinci le-salicylate ye-zinc isetyenziswe kunye nayo. Injongo ephambili yokusebenzisa i-zinc salicylate kukuphucula isantya sokuphuhliswa kombala wephepha le-carbon-free, ngakumbi kwiqondo lokushisa eliphantsi. . Ubungakanani bomphuhlisi wemibala ngokubanzi bubalelwa kwi-11% ukuya kwi-13% yepeyinti epheleleyo (umlinganiselo owomileyo), ngelixa umlinganiselo we-phenolic resin kwi-salicylate ye-zinc ngokubanzi ngu-10: 1 (umlinganiselo owomileyo), ukongezwa kwe-zinc salicylate. ibe kakhulu, kungenjalo iya kwandisa ungcoliseko lwephepha.
3. Ngokuqhelekileyo kukho iindidi ezimbini ze-adhesives ezisetyenziswa kwii-CF coatings, enye i-carboxylated styrene-butadiene latex kwaye enye i-modified starch. Phakathi kwabo, ubungakanani be-carboxylated styrene-butadiene latex ngokubanzi yi-4% ukuya kwi-5% (yepeyinti, umlinganiselo owomileyo), kunye nesixa sesitashi esilungisiweyo ngokuqhelekileyo si-12% ukuya kwi-14% (yepeyinti, umlinganiselo owomileyo).
4. Izongezo ezisetyenziswa kwiingubo zeCF ziquka i-dispersants, i-sodium carboxymethyl cellulose, i-foam inhibitors, i-lubricants, i-preservatives kunye ne-caustic soda. Ukongeza, xa kuveliswa iphepha elinemibala, ii-pigments ezongeziweyo kwipeyinti ziquka umgubo obomvu, umgubo omthubi, i-emerald blue kunye ne-emerald eluhlaza, kunye nemibala ehambelana nayo.iphepha lokukopa elingenakhabhonieziveliswayo zibomvu, tyheli, bhlowu kunye nohlaza.
Ixesha lokuposa: Apr-03-2023