Focus on Cellulose ethers

Isingeniso Somkhiqizo we-CMC Sokunamathisela Okuphrinta Okusebenzayo

1. I-Sodium Carboxymethyl Cellulose
Okunamathiselwe kokuphrinta okusebenzayo kuwukuphuma okunesakhiwo se-ether esitholakala ngokuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Kuyiglue encibilikayo emanzini engancibilika emanzini abandayo nasemanzini ashisayo. Isixazululo saso esinamanzi sinemisebenzi yokuhlanganisa, ukuqina, ukuhlakaza, ukumisa nokusimamisa.

I-Reactive printing paste iwumkhiqizo we-sodium carboxymethyl cellulose enezinga eliphezulu le-etherification. Inqubo ekhethekile yenza iqembu layo eliyinhloko le-hydroxyl lithathelwe indawo ngokuphelele, ukuze kugwenywe ukusabela ngodayi abasebenzayo.

Njengokuqina kokunamathisela kokuphrinta, ukunamathisela kokuphrinta okusebenzayo kungazinzisa i-viscosity, kuthuthukise uketshezi lokunamathisela, kuthuthukise ikhono le-hydrophilic likadayi, kwenze umfaniswano wokudaya futhi kunciphise umehluko wombala; ngesikhathi esifanayo, ekuhlanzeni inqubo emva kokuphrinta nokudaya, izinga lokugeza liphakeme, Indwangu izwa ithambile lapho ithinta.

2. Ukuqhathaniswa kwezici zokunamathisela okuphrinta okusebenzayo kanye ne-sodium alginate
2.1 Izinga lokunamathisela

Uma kuqhathaniswa ne-alginate ye-sodium, ukunamathisela okuphrinta okusebenzayo kune-viscosity ephakeme, kungakhathaliseki ukuthi isetshenziswe yodwa noma ihlanganiswe namanye ama-thickeners, inganciphisa ngempumelelo izindleko zokunamathisela; ngokuvamile, ukunamathisela okuphrinta okusebenzayo Umthamo ungama-60-65% kuphela we-sodium alginate.

2.2 Umphumela wombala nomuzwa

Umkhiqizo wombala wokunamathisela okuphrintayo olungiselelwe ngokunamathisela okuphrinta okusebenzayo njengokujiya kulingana naleyo ye-sodium alginate, futhi indwangu izwakala ithambile ngemva kokukhishwa, okulingana naleyo yemikhiqizo yokunamathisela ye-sodium alginate.

2.3 Namathisela ukuzinza

I-sodium alginate iyi-colloid yemvelo, engabekezeleli kahle amagciwane, isikhathi sokugcina esifushane sokunamathisela umbala, futhi kulula ukuyonakalisa. Ukuzinza kwemikhiqizo ejwayelekile ye-sodium carboxymethyl cellulose kuphakeme kakhulu kunaleyo ye-sodium alginate. Imikhiqizo yokunamathisela yokuphrinta esebenzayo ithuthukiswe ngenqubo ekhethekile, futhi ukumelana kwabo kwe-electrolyte kungcono kunemikhiqizo ejwayelekile ye-sodium carboxymethyl cellulose. Ngesikhathi esifanayo, banokuhambisana okuhle nama-axiliary amakhemikhali namadayi, futhi akulula ukonakala nokuwohloka ngesikhathi sokugcina. Ukuzinza kwamakhemikhali kungcono kakhulu kune-sodium alginate.

2.4 I-Rheology (ehambisanayo)

Kokubili i-alginate ye-sodium ne-CMC ama-pseudoplastic fluids, kodwa i-sodium alginate ine-viscosity ephansi yesakhiwo kanye nenani eliphakeme le-PVI, ngakho-ke ayifaneleki ukuphrinta kwesikrini esiyindilinga (flat), ikakhulukazi ukuphrinta kwesikrini se-high-mesh; imikhiqizo yokunamathisela yokuphrinta esebenzayo ine-viscosity ephezulu yesakhiwo, inani le-PVI lilinganiselwa ku-0.5, kulula ukuphrinta amaphethini acacile nemigqa. Inhlanganisela ye-sodium alginate kanye nokunamathisela okuphrinta okusebenzayo kungahlangabezana nezidingo ze-rheological zokunamathisela kokuphrinta


Isikhathi sokuthumela: Apr-03-2023
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