I-Carboxymethyl Cellulose Sodium yoKutyabeka ngePhepha

I-Carboxymethyl cellulose sodium (CMC-Na) yipolymer enyibilikayo emanzini esetyenziswa kakhulu kwishishini lephepha njenge-agent yokwambathisa.CMC-Naithathwe kwi-cellulose, eyipolymer yendalo efumaneka kwiindonga zeeseli zesityalo. Ukuguqulwa kweekhemikhali ze-cellulose kunye namaqela e-carboxymethyl kubangela i-polymer e-soluble yamanzi kunye neempawu ezibalaseleyo zokwenza ifilimu, okwenza kube yinto efanelekileyo yokusetyenziswa kwephepha.

Ukwaleka kwephepha yinkqubo yokufaka umaleko obhityileyo wezinto zokugquma kumphezulu wephepha ukuphucula ukuprintwa kwawo, inkangeleko kunye nokusebenza kwawo. Izinto zokugquma zingahlelwa zibe ziindidi ezimbini: i-pigmented coating and non-pigmented coatings. Iingubo ze-pigmented ziqulethe i-pigment yemibala, ngelixa iingubo ezingenambala zicacile okanye zicacile. I-CMC-Na idla ngokusetyenziswa njengesibophelelo kwiingubo ezingenambala ngenxa yeempawu zayo zokwenza ifilim kunye nokukwazi ukuphucula iipropati ezingaphezulu ezifana nokugudiswa, ukukhazimla, kunye nokwamkelwa kwe-inki.

Ukusetyenziswa kwe-CMC-Na ekugqumeni kwephepha kunika iingenelo ezininzi, kubandakanya ukuncamathela okuphuculweyo, ukuprintwa okuphuculweyo, kunye nokuphuculwa kokuxhathisa kwamanzi. Kweli nqaku, siza kuphonononga ezi zibonelelo ngokweenkcukacha ngakumbi, kunye nezinto ezahlukeneyo eziphembelela ukusebenza kwe-CMC-Na kwizicelo zokugquma iphepha.

Uphuculo lokuncamathela kokutyabeka

Enye yeenzuzo eziphambili zokusebenzisa i-CMC-Na kwi-coating yephepha kukukwazi kwayo ukuphucula ukunamathela kokutya. I-CMC-Na i-polymer ye-hydrophilic enokuthi idibanise nomphezulu we-hydrophilic wemicu yephepha, ekhokelela ekuphuculeni ukunamathela phakathi kwengubo kunye nomphezulu wephepha. Amaqela e-carboxymethyl kwi-CMC-Na anikezela ngokuxinana okuphezulu kweendawo ezihlawuliswa kakubi ezinokuthi zenze iibhondi ze-ionic kunye namaqela ahlawulwe ngokufanelekileyo kwimicu yephepha, njenge-amine okanye amaqela e-carboxylate.

Ukongeza, i-CMC-Na inokuphinda yenze iibhondi ze-hydrogen kunye namaqela e-hydroxyl kwimicu ye-cellulose, iphucula ngakumbi ukunamathela phakathi kwengubo kunye nomphezulu wephepha. Olu phuculo luphuculweyo lukhokelela kuluhlu olufanayo lokwaleka kwaye lunciphisa umngcipheko wokwaleka i-delamination ngexesha lamanyathelo alandelayo okuqhuba afana ne-calendering okanye ukuprinta.

UShicilelo olomeleziweyo

Olunye uncedo lokusebenzisa i-CMC-Na ekugqumeni ngephepha kukukwazi ukukhulisa ukuprinta. I-CMC-Na inokuphucula ukuguda komphezulu wephepha ngokugcwalisa i-voids kunye nemingxuma phakathi kwemicu yephepha, okukhokelela kumphezulu ofanayo kunye nezitenxo ezimbalwa. Oku kuphucuka kokuguda kungakhokelela kugqithiso olungcono lwe-inki, ukunciphisa ukusetyenziswa kwe-inki, kunye nokuphuculwa komgangatho woshicilelo.

Ukongeza, i-CMC-Na inokuphucula ukwamkeleka kwe-inki kumphezulu wephepha ngokubonelela umaleko wokugquma olinganayo ofunxayo kwaye usasaze i-inki ngokulinganayo. Oku kuphuculwa kokwamkelwa kwe-inki kunokukhokelela kwimifanekiso ebukhali, ukugcwala kombala okungcono, kunye nokunciphisa inki smudging.

Ukuphuculwa kokumelana naManzi

Ukumelana namanzi kuyipropathi ebalulekileyo yeengubo zephepha, ngokukodwa kwizicelo apho iphepha lingabonakaliswa kumswakama okanye ukufuma. I-CMC-Na inokuphucula ukuxhathisa kwamanzi kwi-coatings yephepha ngokwenza umaleko womqobo othintela amanzi ekungeneni kwi-substrate yephepha.

Ubume be-hydrophilic ye-CMC-Na kwakhona ivumela ukuba idibanise iimolekyuli zamanzi, okukhokelela ekuphuculeni ukuxhathisa kwamanzi ngokusebenzisa i-hydrogen bonding kunye nokwakhiwa kwenethiwekhi yepolymer edibeneyo. Umgangatho wokuchasana kwamanzi unokulawulwa ngokulungelelanisa ugxininiso kunye neqondo lokutshintshwa kwe-CMC-Na kwi-coating formulation.