CMC yopangira pepala

Sodium Carboxymethyl Cellulose (CMC)ndi polima wofunika kwambiri wosungunuka m'madzi, womwe umagwiritsidwa ntchito kwambiri popanga mapepala, nsalu, chakudya, mankhwala, mankhwala a tsiku ndi tsiku ndi madera ena. Mu makampani opanga mapepala, makamaka popanga mapepala (kuphimba), CMC yakhala imodzi mwa zowonjezera zofunika kwambiri chifukwa cha mphamvu zake zabwino zopangira filimu, kumatira, kufalikira komanso mphamvu zake zolumikizirana ndi mafupa.

1. Makhalidwe oyambira a CMC

CMC ndi anionic cellulose ether yopangidwa poika magulu a carboxymethyl mu mamolekyulu a cellulose kutengera cellulose yachilengedwe pogwiritsa ntchito njira za mankhwala. Ndi ufa woyera kapena wachikasu pang'ono, wosungunuka mosavuta m'madzi ozizira, ndipo umapanga madzi owoneka bwino okhuthala. Magawo akuluakulu a magwiridwe antchito a CMC ndi monga digiri ya kusintha (DS), kukhuthala, chiyero, ndi zina zotero, zomwe digiri ya kusintha nthawi zambiri imakhala pakati pa 0.4 ndi 1.4. Mlingo wa kusintha ukakwera, kusungunuka kwa madzi kwa CMC kumakhala bwino; kukhuthala kumatsimikizira mphamvu za rheological ndi nthawi yogwiritsira ntchito yankho lake.

2. Udindo wa CMC pakuphimba mapepala

Kuphimba mapepala kumatanthauza kugwiritsa ntchito utoto wopangidwa ndi utoto ndi zomangira pamwamba pa pepala kuti liwongolere kusindikiza, kunyezimira, kusalala, ndi mphamvu yobisa pepalalo. Monga chowonjezera chogwira ntchito mu fomula yophimba, CMC ili ndi ntchito zazikulu izi:

Chotulutsira:CMC imatha kufalikira bwino ndipo imatha kufalitsa bwino utoto wa zinthu zopanda chilengedwe monga kaolin, calcium carbonate, ufa wa talcum, ndi zina zotero mu utotowo kuti usamayende bwino komanso kuti ugwe, zomwe zimapangitsa kuti utotowo ukhale wolimba.

Chomangira:CMC ikhoza kuwonjezera mphamvu yomangirira pakati pa tinthu ta utoto mu utoto ndi pakati pa utoto ndi ulusi wa pepala, ndikuwonjezera mphamvu ya kapangidwe kake ndi kukana kuwonongeka kwa utoto.

Chokhuthala:Madzi a CMC ali ndi kukhuthala kwakukulu ndipo amatha kusintha mawonekedwe a rheological a kupaka utoto, kuti ukhale ndi kusinthasintha kwabwino, kufalikira komanso kuyimitsidwa panthawi yopaka utoto.

Katundu wopanga filimu:CMC imatha kupanga filimu yofanana ikauma pamwamba pa pepala, kupangitsa kuti chophimbacho chikhale chosalala komanso chonyezimira, komanso kupangitsa kuti chithunzi chosindikizidwa chiwoneke bwino.

Kukana mafuta ndi fumbi:CMC ikhoza kusintha kukhuthala kwa kupaka utoto, kuchepetsa kuwonongeka kwa makina, kuletsa kupanga fumbi, komanso kukonza bwino malo opangira zinthu.

3. Kagwiritsidwe ntchito ndi njira zodzitetezera

Mu ntchito zopaka mapepala, pali njira zotsatirazi zogwiritsira ntchito CMC:

Kuonjezera mwachindunji ngati gawo lophimba: Sungunulani ufa wouma wa CMC m'madzi kuti mukonze kuchuluka kwa madzi (nthawi zambiri 1%-5%), kenako muwonjezere ku chophimbacho ndikusakaniza mofanana.

Gwiritsani ntchito limodzi ndi zomangira zina: Kuti chivundikirocho chigwire bwino ntchito, CMC nthawi zambiri imagwiritsidwa ntchito limodzi ndi latex (monga styrene-butadiene latex, ethylene-vinyl acetate emulsion, ndi zina zotero) kuti igwire ntchito mogwirizana.

Sinthani kulamulira kukhuthala: Mitundu yosiyanasiyana ya mapepala ndi zida zophikira zimakhala ndi zofunikira zosiyanasiyana pakukhuthala kwa kukhuthala. Kugwira ntchito kofunikira kungapezeke mwa kusankha CMC yamitundu yosiyanasiyana ya kukhuthala kapena kusintha kuchuluka kwa zowonjezera.

Zosamala zikuphatikizapo:

Pewani kusonkhana pamodzi mukamasungunula CMC. Madzi ofunda angagwiritsidwe ntchito kuwonjezera pang'onopang'ono ndikusakaniza;

Pewani kukhudzana ndi asidi amphamvu ndi alkali kwa nthawi yayitali kuti mupewe kuwonongeka;

Sungani malo osungiramo zinthu kuti musamaume kuti chinyezi chisalowe komanso kuti chisakwirire.

4. Kugwiritsa ntchito CMC mu pepala lokutidwa

Pambuyo poika CMC, zizindikiro zonse za magwiridwe antchito a pepala zimakula kwambiri:

Kusalala ndi kunyezimira kwa pamwamba kumawonjezeka;

Kufanana kwa kuvala kumawonjezeka;

Kusindikiza zithunzi kumakhala bwino ndipo kusindikiza kumakhala bwino;

Kulimba kwa mapepala, mphamvu yokoka ndi kukana kupindika kumawonjezeka;

Kuchuluka kwa matope ophimba kumachepa ndipo kukhazikika kwa malo osungira kumawonjezeka.

CMCndi zinthu zobiriwira komanso zosawononga chilengedwe zomwe zimakwaniritsa zofunikira za makampani opanga mapepala amakono kuti chitukuko chikhale chokhazikika.

5. Chitukuko cha chitukuko

Ndi kusintha kosalekeza kwa zofunikira pa pepala lopaka utoto wapamwamba monga pepala lopaka utoto, makatoni, mapepala olembera, ndi zina zotero, kusintha magwiridwe antchito ndi kugwiritsa ntchito bwino kwa CMC kwakhala malo ofufuzira. M'tsogolomu, kudzera mu kuphatikizana ndi zinthu zatsopano zogwira ntchito monga nanomaterials ndi biopolymers, akuyembekezeka kupititsa patsogolo kuchuluka kwa CMC yogwiritsira ntchito popanga utoto wa pepala.