CMC yekuvhara bepa

Sodium Carboxymethyl Cellulose (CMC)ipurasitiki inokosha inonyungudika mumvura, iyo inoshandiswa zvakanyanya mukugadzira mapepa, machira, chikafu, mishonga, makemikari ezuva nezuva nedzimwe nzvimbo. Muindasitiri yekugadzira mapepa, kunyanya mukuputira mapepa (kuputira), CMC yave imwe yekuwedzera kwakakosha kwekuputira nekuda kwehunhu hwayo hwakanaka hwekuumba firimu, kunamira, kupararira uye hunhu hwerheological.

1. Hunhu hwekutanga hweCMC

CMC i anionic cellulose ether inogadzirwa nekuisa mapoka e carboxymethyl mu cellulose molecules zvichibva pa cellulose yechisikigo nenzira dzemakemikari. Iupfu chena kana yero zvishoma, inonyungudika nyore mumvura inotonhora, uye inoumba mvura inopenya yakajeka. Zviyero zvikuru zvekushanda kweCMC zvinosanganisira dhigirii rekutsiva (DS), viscosity, kuchena, nezvimwewo, pakati pazvo dhigirii rekutsiva rinowanzova pakati pe0.4 ne1.4. Kana dhigirii rekutsiva rakakwirira, kunyungudika kwemvura kweCMC kuri nani; viscosity inosarudza hunhu hwe rheological uye nguva dzekushandisa mhinduro yayo.

2. Basa reCMC mukuputira bepa

Kuputira mapepa zvinoreva kuisa chifukidziro chakagadzirwa nemavara nemabhinda pamusoro pepepa kuti pepa rive rakapfava, rakatsvuka, rakapfava uye rive nesimba rekuviga mapepa. Sechinowedzera basa mufomura yekuputira, CMC ine mabasa makuru anotevera:

Muparadziri:CMC inogona kupararira zvakanaka uye inogona kuparadzira zvinobudirira mavara asina kugadzirwa akadai se kaolin, calcium carbonate, talcum powder, nezvimwewo mujira rekudzivirira kudonha kwemavara uye kunaya kwemvura, nokudaro ichivandudza kugadzikana kwejira remavara.

Bhainda:CMC inogona kuwedzera simba rekubatanidza pakati pezvikamu zvepigment mujira uye pakati pepigments nemapepa fibers, uye kuvandudza simba rechimiro uye kuramba kupfeka kwejira.

Chinokora:CMC mvura ine viscosity yakakura uye inogona kugadzirisa hunhu hwe rheological hwe coating, kuitira kuti ive nekuyerera kwakanaka, kupararira uye kumisa panguva yekuputira.

Nzvimbo yekugadzira mafirimu:CMC inogona kugadzira firimu rakafanana mushure mekuoma pamusoro pepepa, kuvandudza kutsvedzerera nekupenya kwejira, uye kuvandudza kujeka kwemufananidzo wakadhindwa.

Kudzivirira mafuta uye guruva:CMC inogona kuvandudza kunyorova kwejira, kuderedza kusakara kwemuchina, kumisa kugadzirwa kweguruva, uye kuvandudza mhando yenzvimbo yekugadzira.

3. Mashandisirwo uye matanho ekudzivirira

Mukushandiswa kwekuputira mapepa, pane nzira dzinotevera dzekushandisa CMC:

Kuwedzerwa zvakananga sechikamu chekuputira: Nyungudutsa CMC dry powder mumvura kuti ugadzire huwandu hwakati hwemvura (kazhinji 1%-5%), wobva waiisa mupurasitiki wosanganisa zvakaenzana.

Shandisa pamwe chete nezvimwe zvinosunga: Kuti kupfekedza kuve kwakanaka, CMC inowanzoshandiswa pamwe chete ne latex (yakadai se styrene-butadiene latex, ethylene-vinyl acetate emulsion, nezvimwewo) kuti ishande pamwe chete.

Gadzirisa kudzora kupenya: Mhando dzakasiyana dzemapepa nemidziyo yekumonera zvine zvinodiwa zvakasiyana zvekupenya kupenya. Kushanda kunodiwa kunogona kuwanikwa nekusarudza CMC yemhando dzakasiyana dze kupenya kana kugadzirisa huwandu hwekuwedzera.

Zvekudzivirira zvinosanganisira:

Dzivisa kuungana kwemvura paunenge uchinyungudutsa CMC. Mvura inodziya inogona kushandiswa kuwedzera nekukurunga zvishoma nezvishoma;

Dzivisa kusangana kwenguva refu neacids dzakasimba uye alkalis kudzivirira kuora;

Chengeta nzvimbo yekuchengetera yakaoma kudzivirira kunyudzwa kwehunyoro uye kubatanidzwa kwehunyoro.

4. Kushandiswa kweCMC mupepa rakafukidzwa

Mushure mekushandisa CMC, zviratidzo zvese zvekushanda kwepepa rekuvhara zvinovandudzika zvakanyanya:

Kutsvedzerera uye kupenya kwepamusoro zvinovandudzwa;

Kufanana kwekuputira kunowedzerwa;

Kujeka kwemifananidzo pakudhinda kuri nani uye kugona kudhindwa kuri nani;

Kuomarara kwepepa, simba rekudhonza uye kuramba kupeta zvinovandudzwa;

Kuwanda kwemvura inoputirwa nependi kunodzikira uye kugadzikana kwekuchengetedza kunovandudzwa.

CMCchinhu chakasvibira uye chisina njodzi kunharaunda chinosangana nezvinodiwa neindasitiri yemazuva ano yekugadzira mapepa kuti ibudirire.

5. Mafambiro ebudiriro

Nekuvandudzwa kuri kuramba kuchiitwa kwemhando yepamusoro yepepa rakaputirwa repamusoro senge bepa rakaputirwa, kadhibhodhi, bepa remazita, nezvimwewo, kushandurwa kwekushanda uye kushandiswa zvakanaka kweCMC kwave nzvimbo inonyanya kufarirwa mukutsvaga. Mune ramangwana, kuburikidza nekubatanidzwa nezvinhu zvitsva zvinoshanda senge nanomaterials ne biopolymers, zvinotarisirwa kuwedzera kuvandudza mwero wekushandiswa kweCMC mumunda wepepa rakaputirwa.