I-CMC isebenzisa kuShishino lwamaPhepha

Ibakala lephepha CMCisekelwe kwiselulosi njengento ephambili ekrwada, emva kwe-alkalization kunye nonyango lwe-ultra-fine, kwaye emva koko ngokuphendula kweekhemikhali ezininzi ezifana ne-crosslinking, i-etherification kunye ne-acidification eyenziwe ye-anion polymer kunye nesakhiwo se-ether bond. Imveliso yayo egqityiweyo ngumgubo omhlophe okanye okhanyayo ophuzi okanye umba wegranular. Ayinatyhefu, ayinancasa, ayinavumba, inokugcinwa kakuhle kwamanzi, kunye nokucheba okugqwesileyo.

Indima ephambili yeCMCI-sodium carboxymethyl cellulose kushishino lwephepha:

I-CMC isetyenziselwa ukwenza ukutyabeka ngephepha. I-Carboxymethyl cellulose inokunyusa ixabiso lokugcinwa kokufuma kwengubo yokuthintela ukufuduka kwezinto ezincamathelayo ezinyityilisiweyo emanzini ukuya ephepheni, ukuze kuphuculwe umgangatho wengubo kunye nokuphucula umgangatho wengubo.

Ngenxa yokuba i-CMC incamathela kakuhle, ngoko amandla okuncamathela alungile kakhulu, i-carboxymethyl cellulose inokutshintsha i-3-4 yesitatshi esilungisiweyo okanye i-2-3 ye-starch derivatives, kwangaxeshanye inokunciphisa inani le-latex, inceda ukuphucula umxholo oqinileyo. .

Ngexesha lokugubungela kunokudlala umphumo wokuthambisa, ukuqinisa ukuhlukana kwefilimu, umlinganiselo wokwenza ifilimu ulungile kakhulu, unokwenza ifilimu eqhubekayo eqinile ibe ne-luster enhle, ugweme imeko "ye-orange peel". Iipropathi zekhemikhali ze-sodium carboxymethyl cellulose CMC zikhankanyile i-pseudoplastic, le propati ye-carboxymethyl cellulose inokwenza i-coating ibe "ne-pseudoplastic", ekhokelela kwi-coating ebhityileyo kwi-chear ephezulu, ifaneleke ngakumbi i-coating ephezulu eqinileyo okanye i-high-speed coating.

Ngenxa yokuba isisombululo samanzi se-CMC sinokuchasana ne-hydrolysis ye-enzymatic kunye ne-metabolism engasebenzi, i-coating inozinzo oluhle, olubonakaliswa ekugcineni i-homogeneity ye-coating, ukwenzela ukuba i-coating ingabi lula ukuwohloka ngexesha lokugcinwa. Okwesibini, i-CMC isetyenziswa njengomlinganiselo womphezulu wepulp yephepha. Ubungakanani bomphezulu bephepha bunokonyusa ukuqina, ukuguda, kunye nokwandisa ukuqina komphezulu kunye nokungena.

CMCUnokulawula ngokufanelekileyo ukugoba kwaye ufumane ukufaneleka koshicilelo olufanelekileyo. Ukongeza icandelo elithile le-CMC kubungakanani bomphezulu kunokwenza umphezulu ufezekise ukutywinwa okulungileyo, kwaye ubuso bokushicilela bunokuphucula ukucaca koshicilelo lombala kunye nokugcina i-inki. Isisombululo samanzi se-CMC sinokwakheka kakuhle kwefilimu, ke ngoko i-CMC kwi-arhente yokulinganisa umphezulu ivumela ukwenziwa kwefilimu ye-arhente yokulinganisa kumphezulu wephepha, ukuze kuphuculwe isiphumo sobungakanani bomphezulu.

Nangona kunjalo, ngenxa yexabiso eliphezulu le-CMC, lisetyenziselwa kuphela iphepha elineemfuno ezikhethekileyo (iphepha lephepha lemali, i-securities paper, iphepha lokuhombisa, iphepha lesiseko sokukhulula kunye nephepha eliphezulu lokunamathela kabini).

I-CMC isetyenziswa ekupheleni okumanzi kumatshini wephepha ukongeza, kwixesha elidlulileyo, i-sodium carboxymethyl cellulose CMC kwimizi-mveliso yokwenza iphepha isetyenziselwa ukugquma kunye nokulinganisa umphezulu, i-pulp kunye nokutsha kwesayensi kunye nobuchwepheshe, kwiminyaka yakutshanje i-international inokuninzi. yabenzi bephepha ngesiphelo esimanzi CMC yongezwa ukuphucula umgangatho weemveliso kwaye impumelelo nayo ibaluleke kakhulu.

Ukongeza i-CMC kwisiphelo esimanzi kubonelela ngeenzuzo ezininzi ezinkulu:

1.Ukuphucula ukulingana kwephepha CMC yi dispersant elungileyo kakhulu, ukunyibilika ibe colloidal reagent CMC yongezwa kunyango oluludaka emva lula idityaniswe ipulp ifayibha kwaye ugcwalise amasuntswana eziphathekayo, ngenxa yokusebenza electronegative CMC inyibilika emanzini, iya kuzenza ngokwayo. sele unayo i-fiber yephepha kunye ne-fiber particles of negative charge electronegativity inyuka, Amasuntswana anentlawulo efanayo aya kugxotha omnye komnye, kwaye ifayibha kunye ne-fiber kwi-suspension yephepha iya kusasazwa ngokulinganayo, ethandeka ngakumbi ekwenziweni kwephepha. ishishini, kwaye emva koko uphucule ukufana kwephepha.

2. Ukuphucula amandla omzimba we-pulp ukuphucula ukufana kwe-pulp kunceda ukwandisa ukuxinana komzimba we-pulp (ezifana ne: inkangeleko ingxinano, ukukrazula, ubude bokuphuka, ukuxhathisa ikhefu kunye nokumelana nokusonga), i-CMC ekutshintsheni ukufana kwephepha kwangaxeshanye kwandisa amandla omzimba we-pulp. Ulwakhiwo lwe-CMC luqulathe i-carboxymethyl inokusela i-hydroxyl kwifiber ekhokelela kwi-compound reaction, idibanise amandla ebhondi phakathi kwemicu, ngokuveliswa ngokwasemzimbeni kwenkqubo yokuvelisa emva komatshini wephepha, amandla ebhondi phakathi kwemicu aya kwandiswa kakhulu, isiphumo umzimba oyintloko kwiphepha lephepha konke ukwanda kokuqina komzimba.

Ibakala lephepha CMC isebenzisa:

Kwishishini lephepha, i-CMC isetyenziswa kwinkqubo yokucofa, enokuphucula izinga lokugcinwa kunye nokwandisa amandla amanzi. Isetyenziselwa ukulinganisa umphezulu, njenge-pigment excipient, ukuphucula ukunamathela kwangaphakathi, ukunciphisa uthuli lokuprinta, ukuphucula umgangatho wokushicilela; Isetyenziselwa ukugquma ngephepha, inceda ukusasazwa kunye nokunyibilika kwe-pigment, iphucula ukuguda kwephepha, ukuguda, iipropathi zamehlo kunye nokuguquguquka kokushicilela. Kwishishini lephepha njengexabiso elisebenzayo kunye noluhlu olubanzi lwezongezo, ngokukodwa ngenxa yokubunjwa kwefilimu ye-polymer ene-soluble yamanzi kunye nokumelana neoli.

●Isetyenziselwa ukwenza ubungakanani bephepha, ukuze iphepha libe noxinaniso oluphezulu, ukuchaneka kwe-inki elungileyo, ukuqokelelwa kwewax ephezulu kunye nokuguda.

●Inokuphucula imeko ye-fiber viscosity yangaphakathi yephepha, ukuze kuphuculwe amandla ephepha kunye nokumelana nokusonga.

●Kwinkqubo yombala wephepha kunye nephepha, i-CMC inceda ukulawula ukuhamba kombala wokuncamathisela kunye nokufunxa kakuhle kwe-inki.

Ngokuqhelekileyo, umthamo onconywayo ngu-0.3-1.5%.