Umzekelo we-cellulose ether

Umzekelo we-cellulose ether yi-polymer compound eyenziwe nge-cellulose kunye nesakhiwo se-ether.Iringi nganye ye-glucose kwi-cellulose macromolecule iqulethe amaqela amathathu e-hydroxyl, iqela eliphambili le-hydroxyl kwi-athomu ye-carbon yesithandathu, kunye neqela le-hydroxyl yesibini kwi-athomu ye-carbon yesibini neyesithathu.I-hydrogen kwiqela le-hydroxyl itshintshwa liqela le-hydrocarbon ukwenza i-cellulose.Yimveliso yokutshintshwa kwe-hydroxyl hydrogen liqela le-hydrocarbon kwi-cellulose polymer.I-Cellulose yi-polyhydroxy polymer ikhompawundi enganyibilikiyo okanye inyibilike.I-Cellulose inokuchithwa emanzini, i-dilute isisombululo se-alkali kunye ne-solvent ye-organic emva kwe-etherification, kwaye ineempawu ze-thermoplastic.

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

Ngokutsho kweempawu ze-ionization ze-substituents, umzekelo we-cellulose ethers unokwahlulwa ube yi-ionic (efana ne-carboxymethyl cellulose) kunye ne-non-ionic (njenge-methyl cellulose) iindidi ezimbini.

Ngokohlobo lwe-substituent, umzekelo we-cellulose ethers unokwahlulwa ube yi-ether enye (efana ne-methyl cellulose) kunye ne-ether edibeneyo (efana ne-hydroxypropyl methyl cellulose).Ngokwe-solubility, inokwahlulwa ibe yi-soluble yamanzi (efana ne-hydroxyethyl cellulose) kunye ne-organic solvent solubility (efana ne-ethyl cellulose).Udaka oluxubeneyo olomileyo lusebenzisa i-cellulose enyibilikayo emanzini, enokwahlulwa ibe luhlobo olunyibilikayo olukhawulezayo kunye nohlobo lokunyibilika olulibazisekayo emva konyango lomphezulu.

I-Admixtures idlala indima ephambili ekuphuculeni iipropati zodaka oluxubileyo kunye ne-akhawunti ngaphezu kwe-40% yeendleko zempahla kwi-dry-mixed mortar.Inxalenye enkulu yomxube kwimarike yasekhaya inikezelwa ngabavelisi bangaphandle, kwaye idosi yereferensi yemveliso ikwabonelelwa ngababoneleli.Ngenxa yoko, ixabiso leemveliso zodaka oluxutyiweyo luhlala luphezulu, kwaye kunzima ukuvakalisa udaka oluqhelekileyo lwe-masonry kunye nodaka lokutyabeka ngobuninzi kunye nommandla obanzi.Iimveliso zemarike ezikumgangatho ophezulu zilawulwa ziinkampani zangaphandle, abenzi bodaka olomileyo abafumana inzuzo ephantsi, ukufikeleleka kwexabiso eliphantsi;Ukusetyenziswa kwe-admixture ayinalo uphando olucwangcisiweyo kunye nolujoliswe kuyo, ukulandela ngokungaboniyo ukuqulunqwa kwamanye amazwe.

Ugcino lwamanzi ngumxube ongundoqo wokuphucula ukugcinwa kwamanzi kudaka olomileyo oluxubeneyo kunye nolunye lwemixube ephambili yokumisela ixabiso lempahla yodaka olomileyo oluxutyiweyo.Umsebenzi ophambili we-cellulose ether kukugcina amanzi.

Indlela yokusebenza ye-cellulose ether kudaka ihamba ngolu hlobo lulandelayo:

(1) udaka kwi-cellulose etere enyibilikisiweyo emanzini, ngenxa yokuba indawo esebenzayo yomgangatho wokuqinisekisa ukuba i-gelli iyasebenza ngokufanelekileyo ukusasazwa okufanayo kwinkqubo, kunye ne-ether cellulose njengohlobo lwe-colloid ekhuselayo, "ipakethe" amasuntswana aqinileyo, kunye nomphandle wayo wangaphandle ukuya. yenza umaleko wefilimu yokuthambisa, inkqubo ye-slurry izinzile ngakumbi, kwaye iphucula i-slurry kwinkqubo yokuxuba umbane kunye nokwakhiwa kwe-slip inokuthi ngokunjalo.

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