Carboxymethyl Cellulose Sodium yePepa Coating

Carboxymethyl cellulose sodium (CMC-Na) ipolymer inonyungudika nemvura inoshandiswa zvakanyanya muindasitiri yemapepa sechinhu chinoputira.CMC-Nainotorwa kubva ku cellulose, inova yakasikwa polymer inowanikwa muchirimwa sero madziro. Kugadziriswa kwekemikari ye cellulose nemapoka e-carboxymethyl kunoguma nemvura-inonyungudika polima ine yakanakisa kugadzira firimu zvinhu, zvichiita kuti ive sarudzo yakanaka yekushandiswa kwepepa rekuputira.

Pepa kupfekedzwa maitiro ekuisa chidimbu chitete chechinhu chekuputira pamusoro pebepa kuti ivandudze kudhinda kwayo, kutaridzika, uye kushanda kwayo. Zvishandiso zvekupfeka zvinogona kuiswa muzvikamu zviviri: pigmented coatings uye isina-pigmented coatings. Pigmented coatings ine mavara emavara, nepo asina-pigmented coatings akajeka kana akajeka. CMC-Na inowanzoshandiswa sebhainda mumabhandi asina-pigmented nekuda kwemaitiro ayo ekugadzira firimu uye kugona kuvandudza zvimiro zvepasi senge kutsvedzerera, kupenya, uye inki kugamuchira.

Iko kushandiswa kweCMC-Na mukuputira mapepa kunopa zvakati wandei zvakanakira, kusanganisira yakagadziridzwa coating adhesion, kuwedzeredzwa kudhindwa, uye kunatsiridza kudzivirira kwemvura. Muchikamu chino, tichaongorora mabhenefiti aya mune zvakadzama, pamwe nezvinhu zvakasiyana zvinopesvedzera kuita kweCMC-Na mumapepa ekuputira mapeji.

Yakavandudzwa Coating Adhesion

Imwe yemabhenefiti akakosha ekushandisa CMC-Na mukuputira mapepa kugona kwayo kuvandudza kunamatira kwekunamatira. CMC-Na ndeye hydrophilic polymer inogona kudyidzana neiyo hydrophilic pamusoro pemapepa fibers, zvichikonzera kunamira kwakagadziridzwa pakati pekupotera uye pamusoro pepepa. Mapoka ecarboxymethyl paCMC-Na anopa huwandu hwepamusoro hwenzvimbo dzakapomerwa zvisina kunaka dzinogona kuumba zvisungo zveionic nemapoka akachajiswa zvakanaka pamapepa fibers, senge amine kana mapoka ecarboxylate.

Uye zvakare, CMC-Na inogona zvakare kuumba hydrogen zvisungo nemapoka ehydroxyl pane cellulose fiber, ichiwedzera kuwedzera kunamatira pakati pekupotera uye pamusoro pepepa. Iyi yakagadziridzwa yekunamatira inoguma mune imwe yunifomu yekupfeka layer uye inoderedza njodzi yekuputira delamination panguva dzinotevera dzekugadzirisa matanho senge calendering kana kudhinda.

Enhanced Printability

Imwe mukana wekushandisa CMC-Na mukuputira mapepa kugona kwayo kuwedzera kudhinda. CMC-Na inogona kuvandudza kutsvedzerera kwepamusoro kwepepa nekuzadza mavhodhi nemakomba pakati pemapepa faibha, zvichikonzera kuti pave nepamusoro peyunifomu ine zvisaririra zvishoma. Uku kutsvedzerera kwakakwenenzverwa kunogona kutungamira kune nani kuchinjisa inki, kuderedzwa kweinki kushandiswa, uye kunatsiridza kunaka kwekudhinda.

Pamusoro pezvo, CMC-Na inogona zvakare kuvandudza inki yekugamuchira kwepepa repamusoro nekupa yakawedzera yunifomu yekubikira layer inotora uye kuparadzira ingi zvakaenzana. Iyi yakagadziridzwa inki yekugamuchira inogona kukonzera mifananidzo yakapinza, nani kuzara kwemavara, uye kuderedzwa kweinki kushatisa.

Yakavandudzwa Kuramba Kwemvura

Kuramba kwemvura chinhu chakakosha chemapepa ekuputira, kunyanya kune maapplication apo bepa rinogona kuratidzwa nehunyoro kana hunyoro. CMC-Na inogona kuvandudza kudzivirira kwemvura kwemapepa ekuputira nekugadzira chipingamupinyi chinodzivirira mvura kupinda mukati mepepa substrate.

Iyo hydrophilic chimiro cheCMC-Na inobvumirawo kuti iwirirane nemamorekuru emvura, zvichikonzera kuvandudzwa kwemvura yekudzivirira kuburikidza nehydrogen bonding uye kuumbwa kweinopindirana polymer network. Iyo dhigirii yekuramba kwemvura inogona kudzorwa nekugadzirisa iyo yekumisikidza uye dhigirii rekutsiva CMC-Na mukuumbwa kwekuputira.