Kuyini ukugcinwa kwamanzi kwe-methyl cellulose ether (MC)

Kuyini ukugcinwa kwamanzi kwe-methyl cellulose ether (MC)

Impendulo: Izinga lokugcinwa kwamanzi lingenye yezinkomba ezibalulekile zokulinganisa ikhwalithi ye-methyl cellulose ether, ikakhulukazi ekwakhiweni kongqimba oluncane lodaka olusekelwe kusimende kanye ne-gypsum. Ukugcinwa kwamanzi okuthuthukisiwe kungavimbela ngempumelelo into yokulahlekelwa amandla kanye nokuqhekeka okubangelwa ukomisa ngokweqile kanye nokungena kwamanzi okwanele. Ukugcinwa kwamanzi okuhle kakhulu kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kungenye yezinkomba ezibalulekile zokuhlukanisa ukusebenza kwe-methyl cellulose ether. Ngaphansi kwezimo ezijwayelekile, ama-ethers amaningi e-methyl cellulose anciphisa ukugcinwa kwawo kwamanzi njengoba izinga lokushisa likhuphuka. Lapho izinga lokushisa likhuphukela ku-40 ° C, ukugcinwa kwamanzi kwe-methyl cellulose ethers evamile kuncipha kakhulu, okubaluleke kakhulu ezindaweni ezishisayo nezomile Futhi ukwakhiwa kongqimba oluncane ohlangothini olunelanga ehlobo kuzoba nomthelela omkhulu. Kodwa-ke, ukwenza ukuntuleka kokugcinwa kwamanzi ngokusebenzisa umthamo omkhulu kuzodala i-viscosity ephezulu yezinto ngenxa yomthamo omkhulu, okuzodala ukuphazamiseka ekwakhiweni.

Ukugcinwa kwamanzi kubaluleke kakhulu ukuze kuthuthukiswe inqubo yokuqina kwezinhlelo ze-mineral gelling. Ngaphansi kwesenzo se-cellulose ether, amanzi kancane kancane adedelwa kungqimba lwesisekelo noma emoyeni isikhathi eside, ngaleyo ndlela kuqinisekiswe ukuthi izinto zikasimende (usimende noma i-gypsum) zinesikhathi eside esanele sokusebenzisana namanzi futhi kancane kancane ziba lukhuni.

Yiziphi izici ze-methyl cellulose ether?

Impendulo: Kungezwe inani elincane kuphela le-methyl cellulose ether, futhi ukusebenza okuqondile kwe-gypsum mortar kuzothuthukiswa kakhulu.

(1) Lungisa ukungaguquguquki

I-Methyl cellulose ether isetshenziswa njenge-thickener ukulungisa ukuhambisana kwesistimu.

(2) Lungisa isidingo samanzi

Ohlelweni lodaka lwe-gypsum, isidingo samanzi siyipharamitha ebalulekile. Isidingo samanzi esiyisisekelo, kanye nokukhishwa kodaka okuhlobene, kuncike ekwakhiweni kodaka lwe-gypsum, okungukuthi inani le-limestone, i-perlite, njll. Ukufakwa kwe-methyl cellulose ether kungalungisa ngempumelelo isidingo samanzi kanye nokuphuma kodaka lwe-gypsum mortar.

(3) Ukugcinwa kwamanzi

Ukugcinwa kwamanzi kwe-methyl cellulose ether, umuntu angakwazi ukulungisa isikhathi sokuvula kanye nenqubo ye-coagulation yesistimu ye-gypsum mortar, ukuze ulungise isikhathi sokusebenza sesistimu; ama-methyl cellulose ether amabili angakhulula kancane kancane amanzi esikhathini eside Amandla okuqinisekisa ngempumelelo ukuhlangana phakathi komkhiqizo ne-substrate.

(4) Lungisa i-rheology

Ukwengezwa kwe-methyl cellulose ether kungalungisa ngokuphumelelayo i-rheology yesistimu ye-gypsum yokufaka, ngaleyo ndlela ithuthukise ukusebenza kokusebenza: udaka lwe-gypsum lusebenza kangcono, ukusebenza okungcono kwe-anti-sag, akukho ukunamathela ngamathuluzi wokwakha nokusebenza okuphezulu kwe-pulping, njll.

Ungakhetha kanjani i-methyl cellulose ether efanelekile?

Impendulo: Imikhiqizo ye-Methyl cellulose ether inezici ezihlukene ngokusho kwendlela yazo ye-etherification, izinga le-etherification, i-viscosity yesisombululo esinamanzi, izakhiwo ezibonakalayo ezifana nokucwenga kwezinhlayiyana, izici zokuncibilika nezindlela zokuguqula. Ukuze uthole umphumela wokusetshenziswa ongcono kakhulu, kuyadingeka ukukhetha uhlobo olulungile lwe-cellulose ether yezinkambu ezihlukene zohlelo lokusebenza, futhi uhlobo olukhethiwe lwe-methyl cellulose ether kufanele luhambisane nohlelo lodaka olusetshenzisiwe.

I-methyl cellulose ethers iyatholakala kuma-viscosities ahlukene ukuze ivumelane nezidingo ezahlukahlukene. I-Methyl cellulose ether ingadlala indima kuphela ngemva kokuchithwa, futhi izinga layo lokuqedwa kufanele livumelane nenkundla yesicelo kanye nenqubo yokwakha. Umkhiqizo oyimpushana ulungele izinhlelo zodaka ezixutshwe okomile (njenge-spray plaster plastering). Izinhlayiya ezinhle kakhulu ze-methyl cellulose ether zingaqinisekisa ukuqedwa ngokushesha, ukuze ukusebenza kwayo okuhle kakhulu kusetshenziswe ngokuphumelelayo esikhathini esifushane ngemva kokwakhiwa kodaka olumanzi. Kwenyusa ukungaguquguquki nokugcinwa kwamanzi kodaka ngesikhathi esifushane kakhulu. Lesi sici sifaneleka ngokukhethekile ekwakhiweni kwemishini, ngoba ngokuvamile, isikhathi sokuxuba amanzi kanye nodaka oluxubekile omile lufushane kakhulu ngesikhathi sokwakhiwa kwemishini.

Kuyini ukugcinwa kwamanzi kwe-methyl cellulose ether?

Impendulo: Ukusebenza okubaluleke kakhulu kwamabanga ahlukene e-methyl cellulose ether (MC) amandla abo okugcina amanzi ezinhlelweni zezinto zokwakha. Ukuze uthole ukusebenza kahle, kuyadingeka ukugcina umswakama owanele odakeni isikhathi eside. Ngenxa yokuthi amanzi asebenza njengesithambisi nencibilika phakathi kwezingxenye ze-inorganic, ama-mortar anengqimba elincanyana angafakwa amakhadi futhi udaka olunamekiwe lungasakazwa ngamatrowel. Izindonga noma amathayela abambayo akudingeki ukuthi afakwe amanzi ngaphambili ngemva kokusebenzisa i-cellulose ether-added mortar. Ngakho i-MC ingaletha imiphumela yokwakha esheshayo neyongayo.

Ukuze usethe, izinto zikasimende ezifana ne-gypsum zidinga ukufakwa amanzi ngamanzi. Inani elizwakalayo le-MC lingagcina umswakama othulini isikhathi eside esanele, ukuze inqubo yokumisa nokuba lukhuni iqhubeke. Inani le-MC elidingekayo ukuze kutholwe umthamo owanele wokugcina amanzi lincike ekumunceni kwesisekelo, ukwakheka kodaka, ukujiya kongqimba lodaka, isidingo samanzi sodaka, kanye nesikhathi sokusetha sezinto zikasimende.

Uma usayizi wezinhlayiyana ze-MC ucolekile, udaka lushuba ngokushesha.