I-EHEC ne-MEHEC

I-EHEC (i-ethyl hydroxyethyl cellulose) kanye ne-MEHEC (i-methyl ethyl hydroxyethyl cellulose) yizinhlobo ezimbili ezibalulekile ze-cellulose ethers evame ukusetshenziswa ezimbonini ezihlukahlukene, okuhlanganisa imboni kapende nezingubo. Ake sijule kulokho ngakunye:

1. I-EHEC (Ethyl Hydroxyethyl Cellulose):
   • Isakhiwo Samakhemikhali: I-EHEC isuselwa ku-cellulose ngokwethula kokubili amaqembu e-ethyl kanye ne-hydroxyethyl kumgogodla we-cellulose.
   • Izakhiwo nemisebenzi:
     • I-EHEC iyancibilika emanzini futhi yakha izixazululo ezisobala, ezibukekayo.
     • Isebenza njenge-thickener ne-rheology modifier kumapende asekelwe emanzini kanye nama-coatings, ilawula i-viscosity futhi ithuthukise izakhiwo zohlelo lokusebenza.
     • I-EHEC idlulisela i-pseudoplastic noma i-shear-thinning ekwakhiweni kopende, okusho ukuthi i-viscosity iyancipha ngokukhuphuka kwezinga lokugunda, kube lula ukusetshenziswa kanye nokuxubha okushelelayo.
   • Izicelo:
     • I-EHEC isetshenziswa kabanzi kumapende angaphakathi nangaphandle, ama-primers, nama-coatings ukuze kuzuzwe ukungaguquguquki okufunayo, ukugeleza, nokulinganisa izakhiwo.
     • Isebenza kahle kakhulu ekwenziweni lapho i-viscosity ephezulu emazingeni aphansi e-shear idingeka ukuze imelane ne-sag kanye nokwakhiwa kwefilimu okuthuthukisiwe.
2. I-MEHEC (Methyl Ethyl Hydroxyethyl Cellulose):
   • Isakhiwo Sekhemikhali: I-MEHEC iyi-ether ye-cellulose eguquliwe ene-methyl, ethyl, ne-hydroxyethyl substituents kumgogodla we-cellulose.
   • Izakhiwo nemisebenzi:
     • I-MEHEC ibonisa ukuncibilika okufanayo kanye nezakhiwo ze-rheological ku-EHEC kodwa kunomehluko othile ekusebenzeni.
     • Inikeza amandla okugcina amanzi athuthukisiwe uma kuqhathaniswa ne-EHEC, iyenza ifaneleke ikakhulukazi ukwakheka lapho kufunwa khona isikhathi esivulekile esinwetshiwe noma ukuthuthukiswa kombala okuthuthukisiwe.
     • I-MEHEC inikeza ukusebenza kahle kokuqina okuthuthukisiwe nokuzinza phezu kwebanga elibanzi le-pH nezimo zokushisa.
   • Izicelo:
     • I-MEHEC ithola ukusetshenziswa kopende osuselwe emanzini, ama-coatings, nezinto zokwakha lapho ukugcinwa kwamanzi okuthuthukisiwe, ukuqina, nokulawulwa kwe-rheological kuyadingeka.
     • Ivame ukusetshenziselwa ukwakhiwa kwamapende okuhlobisa, ama-textured coatings, kanye nokuqedwa okukhethekile lapho isikhathi esengeziwe sokusebenza kanye nezindawo zokugeleza ezithuthukisiwe zibalulekile.

Kokubili i-EHEC ne-MEHEC zingama-ether e-cellulose ahlukahlukene anikeza abasunguli befomula ukuguquguquka ekuzuzeni izici zokusebenza ezifiselekayo kumapende asekelwe emanzini kanye nama-coatings. Ukuhambisana kwazo nezinye izithasiselo, ukukhululeka kokufakwa ekwakhiweni, kanye nekhono lokuthuthukisa izici ezibalulekile ezifana nokulawula i-viscosity, ukugcinwa kwamanzi, kanye nezakhiwo zokusetshenziswa kuzenza zibe izingxenye ezibalulekile ekwakhiweni kwezingubo zokuhlobisa zekhwalithi ephezulu.