Ukusetshenziswa kwe-Cellulose Ether

Ekubunjweni kodaka lwempuphu eyomile, i-cellulose ether iyisengezo esibalulekile esinenani eliphansi lokwengeza, kodwa lingathuthukisa kakhulu ukuxuba nokusebenza kokwakhiwa kodaka.Ukukubeka kalula, cishe zonke izakhiwo ezimanzi zokuxuba zodaka ezingabonakala ngeso lenyama zinikezwa i-cellulose ether.Iphuma ku-cellulose etholwe kusetshenziswa i-cellulose evela kukhuni nokotini, isabela nge-caustic soda, bese i-etherifying nge-ejenti etherifying.

Izinhlobo ze-cellulose ethers

A. I-Hydroxypropyl methyl cellulose (HPMC), eyenziwe ikakhulukazi ukotini ocolisisiwe ocwenge kakhulu njengento eluhlaza, ifakwa etherified ngokukhethekile ngaphansi kwezimo ze-alkali.
B. I-Hydroxyethyl methylcellulose (HEMC), i-non-ionic cellulose ether, iyimpushana emhlophe ngokubukeka, ayinaphunga futhi ayinambitheki.
C. I-Hydroxyethyl cellulose (HEC), i-surfactant engeyona i-ionic, emhlophe ngokubukeka, engenaphunga, ayinambitheki futhi impushana egeleza kalula.

Okungenhla ama-non-ionic cellulose ethers, nama-ionic cellulose ethers (njenge-carboxymethyl cellulose CMC).

Ngesikhathi sokusetshenziswa kwe-powder mortar eyomile, ngenxa yokuthi i-ionic cellulose (CMC) ayizinzile lapho kukhona ama-calcium ions, ayivamile ukusetshenziswa ezinhlelweni ze-inorganic gelling ezinosimende kanye ne-slaked lime njengezinto zokuhlanganisa.Kwezinye izindawo e-China, Amanye ama-putty angaphakathi odongeni acutshungulwa ngesitashi esilungisiwe njengento eyinhloko yokufaka usimende kanye ne-Shuangfei powder njengesigcwalisi sisebenzisa i-CMC njengesishuqululi.Kodwa-ke, ngenxa yokuthi lo mkhiqizo ujwayele ukubola futhi awumelani namanzi, kancane kancane uqedwa yimakethe.Njengamanje, i-cellulose ether esetshenziswa kakhulu e-China yi-HPMC.

I-Cellulose ether isetshenziswa kakhulu njenge-ejenti yokugcina amanzi kanye ne-thickener ezintweni ezisekelwe kusimende.

Umsebenzi wayo wokugcina amanzi ungavimbela i-substrate ekumunceni amanzi amaningi futhi ivimbele ukuhwamuka kwamanzi, ukuze kuqinisekiswe ukuthi usimende unamanzi anele uma ufakwe amanzi.Thatha umsebenzi wokuplasta njengesibonelo.Lapho i-slurry ye-cement evamile isetshenziswa endaweni engaphansi, i-substrate eyomile ne-porous izomunca ngokushesha inani elikhulu lamanzi kusuka ku-slurry, futhi ungqimba lwe-cement slurry oluseduze ne-base layer luzolahlekelwa kalula amanzi adingekayo ukuze kufakwe amanzi., ngakho-ke akukwazi nje ukwakha ijeli ye-cement enamandla okubopha phezu kwe-substrate, kodwa futhi ijwayele ukungqubuzana nokugeleza kwamanzi, ukuze ungqimba lwe-samente olunodaka lube lula ukuwa.Uma i-grout esetshenzisiwe incane, kulula futhi ukwakha imifantu kuyo yonke i-grout.Ngakho-ke, esikhathini esidlule ukusebenza kokukhonkoloza, amanzi ngokuvamile asetshenziselwa ukumanzisa i-substrate kuqala, kodwa lokhu kusebenza akukona nje kuphela umsebenzi onzima futhi odla isikhathi, kodwa futhi ikhwalithi yokusebenza kunzima ukuyilawula.

Ngokuvamile, ukugcinwa kwamanzi kodaka lukasimende kukhuphuka ngokwanda kokuqukethwe kwe-cellulose ether.Uma kukhulu i-viscosity ye-cellulose ether eyengeziwe, ukugcinwa kwamanzi kungcono.

Ngaphezu kokugcina amanzi kanye nokuqina, i-cellulose ether iphinda ithinte ezinye izakhiwo zikasimende, njengokuhlehlisa, ukufaka umoya, nokwandisa amandla ebhondi.I-cellulose ether ibambezela ukumiswa kanye nenqubo yokuqina kukasimende, ngaleyo ndlela andise isikhathi sokusebenza.Ngakho-ke, ngezinye izikhathi isetshenziswa njenge-coagulant.

Ngokuthuthukiswa kodaka oluxutshwe okomile, i-cellulose ether isibe ingxube ebalulekile yodaka lukasimende.Kodwa-ke, kunezinhlobo eziningi kanye nokucaciswa kwe-cellulose ether, futhi ikhwalithi phakathi kwamaqoqo isalokhu iguquguquka.