Umzekelo we-ether yeseli

I-ether yeseliUmzekelo yi-polymer compound eyenziwe nge-cellulose enesakhiwo se-ether. Isangqa ngasinye se-glucose kwi-cellulose macromolecule siqulethe amaqela amathathu e-hydroxyl, iqela eliphambili le-hydroxyl kwi-atom yesithandathu yekhabhoni, kunye neqela lesibini le-hydroxyl kwi-atom yesibini neyesithathu yekhabhoni. I-hydrogen kwiqela le-hydroxyl ithathelwa indawo liqela le-hydrocarbon ukwenza i-cellulose. Yimveliso yokutshintshwa kwe-hydroxyl hydrogen liqela le-hydrocarbon kwi-cellulose polymer. I-Cellulose yi-polyhydroxy polymer compound enganyibilikiyo okanye inyibilike. I-Cellulose inokunyibilika emanzini, inyibilikise isisombululo se-alkali kunye ne-organic solvent emva kwe-etherification, kwaye ineempawu ze-thermoplastic.

I-Cellulose ether ligama eliqhelekileyo loluhlu lweemveliso eziveliswa yi-reaction ye-alkali cellulose kunye ne-etherifying agent phantsi kweemeko ezithile. I-Alkali cellulose ithathelwa indawo zii-ethers ezahlukeneyo ze-etherifying ukuze kufunyanwe ii-ethers ezahlukeneyo ze-cellulose.

Ngokweempawu ze-ionization zezinto ezithatha indawo, umzekelo we-cellulose ethers unokwahlulwa ube yi-ionic (njenge-carboxymethyl cellulose) kunye ne-non-ionic (njenge-methyl cellulose) iindidi ezimbini.

Ngokwehlobo lwento ethatha indawo,ii-ether ze-celluloseUmzekelo ungahlulwahlulwa ube yi-ether enye (njenge-methyl cellulose) kunye ne-ether exutyiweyo (njenge-hydroxypropyl methyl cellulose). Ngokwe-solubility, ungahlulwahlulwa ube yi-water soluble (njenge-hydroxyethyl cellulose) kunye ne-organic solvent solubility (njenge-ethyl cellulose). I-dry mixed mortar ikakhulu isebenzisa i-water-soluble cellulose, enokwahlulwa ibe yi-quick-dissolving type kunye ne-delayed dissolving type emva konyango lomphezulu.

Umxube udlala indima ebalulekileyo ekuphuculeni iipropati zomxube owomileyo kwaye ubangela ngaphezulu kwe-40% yexabiso lezinto ezisetyenzisiweyo kumxube owomileyo. Inxalenye enkulu yomxube kwimarike yasekhaya inikezelwa ngabavelisi bamanye amazwe, kwaye idosi yesalathiso semveliso ikwanikezelwa ngababoneleli. Ngenxa yoko, iindleko zeemveliso zomxube owomileyo zihlala ziphezulu, kwaye kunzima ukwenza umxube oqhelekileyo wokwakha kunye nodonga lokuplasta lube luncedo kakhulu kwaye lubanzi. Iimveliso zemarike eziphezulu zilawulwa ziinkampani zamanye amazwe, abavelisi bomxube owomileyo banenzuzo ephantsi, ixabiso eliphantsi lokufikeleleka; Ukusetyenziswa komxube akunaphando lucwangcisiweyo nolujoliswe kulo, kulandela ngokungaboniyo iindlela zamanye amazwe.

Iarhente yokugcina amanzi yeyona nto iphambili ekuphuculeni ukusebenza kokugcina amanzi kwi-mortar exutyiweyo eyomileyo kwaye yenye yezona zinto ziphambili ekumiseleni ixabiso lezinto ze-mortar exutyiweyo eyomileyo. Umsebenzi ophambili we-cellulose ether kukugcina amanzi.

Indlela yokusebenza kwe-cellulose ether kwi-mortar yile ilandelayo:

(1) udaka kwi-cellulose ether inyibilikiswe emanzini, kuba indima esebenzayo kumphezulu ukuqinisekisa ukuba izinto ezifakwe kwi-gel zisasazwa ngokulinganayo kwinkqubo, kwaye i-cellulose ether njengohlobo lwe-colloid yokukhusela, "ipakethe" amasuntswana aqinileyo, kwaye kumphezulu wayo wangaphandle ukwenza umaleko wefilimu yokuthambisa, inkqubo ye-slurry izinze ngakumbi, kwaye iphucula i-slurry kwinkqubo yokuxuba ubumanzi kunye nokwakhiwa kwe-slip nayo inokuba njalo.

(2)I-ether yeseliisisombululo ngenxa yeempawu zaso zesakhiwo seemolekyuli, ukuze amanzi akwisigqubuthelo angalahleki lula, aze akhutshwe kancinci kancinci kwixesha elide, nto leyo enika isigqubuthelo ukugcinwa kwamanzi kakuhle kunye nokusebenza kakuhle.