I-ether ye-celluloseIsibonelo i-polymer compound eyenziwe nge-cellulose enesakhiwo se-ether. Indandatho ngayinye ye-glucose ku-cellulose macromolecule iqukethe amaqembu amathathu e-hydroxyl, iqembu eliyinhloko le-hydroxyl ku-athomu yesithupha yekhabhoni, kanye neqembu lesibili le-hydroxyl kuma-athomu ekhabhoni yesibili neyesithathu. I-hydrogen eqenjini le-hydroxyl ithathelwa indawo yiqembu le-hydrocarbon ukuze yakhe i-cellulose. Ingumkhiqizo wokufakwa esikhundleni kwe-hydroxyl hydrogen yiqembu le-hydrocarbon ku-cellulose polymer. I-Cellulose iyi-polyhydroxy polymer compound engancibiliki noma incibiliki. I-Cellulose ingancibilika emanzini, inciphise isisombululo se-alkali kanye nesinyibilikisi se-organic ngemva kokufakelwa, futhi inezakhiwo ze-thermoplastic.
I-cellulose ether yigama elijwayelekile lochungechunge lwemikhiqizo ekhiqizwa ukusabela kwe-alkali cellulose kanye ne-etherifying agent ngaphansi kwezimo ezithile. I-alkali cellulose ithathelwa indawo yi-ethers ehlukene ye-etherifying ukuze kutholakale ama-ether e-cellulose ahlukene.
Ngokwezakhiwo ze-ionization zezinto ezithatha indawo, isibonelo se-cellulose ethers singahlukaniswa sibe yi-ionic (njenge-carboxymethyl cellulose) kanye ne-non-ionic (njenge-methyl cellulose) izigaba ezimbili.
Ngokusho kohlobo lwesithasiselo,ama-ether e-celluloseIsibonelo singahlukaniswa sibe yi-ether eyodwa (njenge-methyl cellulose) kanye ne-ether exubile (njenge-hydroxypropyl methyl cellulose). Ngokusho kokuncibilika, singahlukaniswa sibe yi-water soluble (njenge-hydroxyethyl cellulose) kanye ne-organic solvent solubility (njenge-ethyl cellulose). I-dry mixed mortar isebenzisa kakhulu i-water soluble cellulose, engahlukaniswa ibe uhlobo oluncibilikayo ngokushesha kanye nohlobo oluncibilikayo olubambezelekile ngemva kokwelashwa kwendawo.
Izingxube zidlala indima ebalulekile ekuthuthukiseni izakhiwo ze-dry-mixed mortar futhi zibiza ngaphezu kuka-40% wezindleko zezinto zokwakha ze-dry-mixed mortar. Ingxenye enkulu yokuxuba emakethe yasekhaya ihlinzekwa ngabakhiqizi bangaphandle, futhi isilinganiso somkhiqizo sinikezwa nangabahlinzeki. Ngenxa yalokho, izindleko zemikhiqizo ye-dry-mixed mortar zihlala ziphezulu, futhi kunzima ukwenza i-common masonry mortar kanye ne-plastering mortar ithandwe ngobuningi nendawo ebanzi. Imikhiqizo yemakethe ephezulu ilawulwa yizinkampani zakwamanye amazwe, abakhiqizi be-dry mortar banenzuzo ephansi, ukungabizi kahle ngentengo; Ukusetshenziswa kwe-admixture akunalo ucwaningo oluhlelekile noluqondiwe, kulandela ngokungacabangi ukwakheka kwamanye amazwe.
I-ejenti yokugcina amanzi iyinhlanganisela eyinhloko yokuthuthukisa ukusebenza kokugcinwa kwamanzi kwe-dry mixed mortar kanye nenye yenhlanganisela eyinhloko yokunquma izindleko zezinto zokwakha ze-dry mixed mortar. Umsebenzi oyinhloko we-cellulose ether ukugcina amanzi.
Indlela yokusebenza kwe-cellulose ether ku-mortar ilandelayo:
(1) udaka oluse-cellulose ether luncibilikiswe emanzini, ngoba indima esebenzayo ebusweni ukuqinisekisa ukuthi izinto ezifakwe i-gelled zisakazwa ngendlela efanayo ohlelweni, kanye ne-cellulose ether njengohlobo lwe-colloid evikelayo, "iphakethe" izinhlayiya eziqinile, futhi ebusweni bayo bangaphandle bakhe ungqimba lwefilimu yokugcoba, uhlelo lwe-slurry luzinzile kakhudlwana, futhi luthuthukisa i-slurry enqubweni yokuxuba uketshezi kanye nokwakhiwa kwe-slip nakho kungasebenza.
(2)I-ether ye-celluloseisixazululo ngenxa yezimpawu zaso zesakhiwo sama-molecule, ukuze amanzi asesigqumeni angabi lula ukuwalahla, futhi akhishwe kancane kancane esikhathini eside, okwenza isigqumeni sigcine amanzi kahle futhi sisebenze kahle.
Isikhathi sokuthunyelwe: Ephreli-25-2024