Abavelisi be-ether cellulose bahlalutya ukubunjwa kodaka oluxubeneyo olumileyo

I-Dry-mix mortar (i-DMM) i-powder building material eyenziwe ngokumisa kunye nokutyumza i-samente, i-gypsum, i-lime, njl njl njengezona zinto zisisiseko, emva kokulinganisa ngokuchanekileyo, ukongeza iindidi ezahlukeneyo zokongeza kunye nezizaliso. Ineenzuzo zokuxuba okulula, ukwakhiwa okufanelekileyo, kunye nomgangatho ozinzile, kwaye isetyenziswa ngokubanzi kubunjineli bokwakha, ubunjineli bokuhlobisa kunye nezinye iindawo. Amacandelo aphambili odaka oluxubeneyo olumileyo lubandakanya izinto ezisisiseko, iifayili, izixube kunye nezongezo. Phakathi kwabo,i-cellulose ether, njengesongezo esibalulekileyo, idlala indima ebalulekileyo ekulawuleni i-rheology kunye nokuphucula ukusebenza kokwakhiwa. 

1. Izinto ezisisiseko

Izinto ezisisiseko ziyinxalenye ephambili yodaka oluxubileyo, ngokuqhelekileyo kubandakanya i-samente, i-gypsum, i-lime, njl.

I-Cement: Yenye yezona zinto zixhaphakileyo kwisiseko sodaka olomileyo, ngokuqhelekileyo i-samente eqhelekileyo ye-silicate okanye i-samente eguquliweyo. Umgangatho wesamente umisela amandla odaka. Amabanga aqhelekileyo amandla aqhelekileyo angama-32.5, 42.5, njl.

IGypsum: isetyenziswa ngokuqhelekileyo kwimveliso yodaka lwesamente kunye nodaka olukhethekileyo lwesakhiwo. Inokuvelisa i-coagulation engcono kunye neempawu ezilukhuni ngexesha lenkqubo ye-hydration kunye nokuphucula ukusebenza kodaka.

Ikalika: idla ngokusetyenziselwa ukulungisa iimbumba ezikhethekileyo, ezifana nodaka lwekalika. Ukusetyenziswa kwekalika kunokwandisa ukugcinwa kwamanzi kwidaka kunye nokuphucula ukuxhathisa kwayo kwiqabaka.

2. Isigcwalisi

I-Filler ibhekisela kwi-powder inorganic esetyenziselwa ukulungelelanisa iimpawu ezibonakalayo zodaka, ngokuqhelekileyo kubandakanya isanti ecocekileyo, i-quartz powder, i-perlite eyandisiweyo, i-ceramsite eyandisiweyo, njl. Umsebenzi wokuzalisa kukubonelela ngomthamo wodaka kunye nokulawula umbane kunye nokunamathela.

Isanti ecolekileyo: isetyenziswa ngokuqhelekileyo kudaka olomileyo oluqhelekileyo, olunomlinganiselo omncinci wamasuntswana, ngokuqhelekileyo ngaphantsi kwe-0.5mm.

I-Quartz powder: ucolo oluphezulu, olulungele udaka olufuna amandla aphezulu kunye nokuqina.

I-perlite eyandisiweyo / i-ceramsite eyandisiweyo: isetyenziswa ngokuqhelekileyo kwiimbumba ezikhaphukhaphu, kunye nokugquma kwesandi esilungileyo kunye neempawu zokugquma ubushushu.

3. Imixube

I-Admixtures zizinto zekhemikhali eziphucula ukusebenza kwe-dry-mix mortar, ngokukodwa kubandakanywa i-agent yokugcina amanzi, i-retarders, i-accelerators, i-antifreeze agents, njl. I-Admixtures inokulungelelanisa ixesha lokumisela, umbane, ukugcinwa kwamanzi, njl.

Iarhente yokugcina amanzi: isetyenziselwa ukuphucula ukugcinwa kwamanzi kudaka kunye nokuthintela amanzi ukuba angaguquguquki ngokukhawuleza, ngaloo ndlela ukwandisa ixesha lokwakhiwa kodaka, olubaluleke kakhulu, ngakumbi kubushushu obuphezulu okanye kwindawo eyomileyo. Iiarhente eziqhelekileyo zokugcina amanzi ziquka iipolymers.

I-Retarders: inokulibazisa ixesha lokumisela udaka, olulungele indawo yokwakhiwa kweqondo lokushisa eliphezulu ukukhusela udaka ukuba lube lukhuni kwangaphambi kwexesha ngexesha lokwakha.

I-Accelerators: ukukhawulezisa inkqubo yokuqina kodaka, ngakumbi kwindawo yokushisa ephantsi, ehlala isetyenziselwa ukukhawulezisa ukusabela kwe-samente kunye nokuphucula amandla omdaka.

I-Antifreeze: isetyenziswa kwindawo yobushushu obuphantsi ukunqanda udaka ukuba lungaphelelwa ngamandla ngenxa yokukhenkceza. 

4. Izongezo

Izongezo zibhekisela kwiikhemikhali okanye izinto zendalo ezisetyenziselwa ukuphucula iimpawu ezithile ezithile zodaka oluxubeneyo, ngokuqhelekileyo lubandakanya i-cellulose ether, i-thickener, i-dispersant, njl.

Indima ye-cellulose ether

I-ether ye-cellulose yiklasi yeekhompawundi ze-polymer ezenziwe kwi-cellulose ngokuguqulwa kweekhemikhali, ezisetyenziswa ngokubanzi kulwakhiwo, iingubo, iikhemikhali zemihla ngemihla kunye nezinye iindawo. Kudaka lomxube owomileyo, indima ye-cellulose ether ibonakala ikakhulu kule miba ilandelayo:

Ukuphucula ugcino lwamanzi lodaka

I-ether ye-cellulose inokunyusa ngokufanelekileyo ukugcinwa kwamanzi kwi-mortar kunye nokunciphisa ukukhuphuka kwamanzi ngokukhawuleza. Isakhiwo salo se-molecular iqukethe amaqela e-hydrophilic, anokuthi enze amandla okubopha okuqinileyo kunye neamolekyu zamanzi, ngaloo ndlela igcina i-mortar imanzi kwaye igweme ukuqhekeka okanye ubunzima bokwakha obubangelwa ukulahleka kwamanzi ngokukhawuleza.

Ukuphucula i-rheology yodaka

I-ether ye-cellulose inokulungelelanisa ukumanzi kunye nokunamathela kodaka, okwenza udaka lube lufana kwaye lube lula ukusebenza ngexesha lokwakha. Yandisa i-viscosity yodaka ngokujiya, inyusa ukuchasana kwayo, inqande udaka ukuba ungagungqi ngexesha lokusetyenziswa, kwaye iqinisekisa umgangatho wokwakha wodaka.

Ukuphucula ukunamathela kodaka

Ifilimu eyenziwe yi-cellulose ether kwi-mortar ine-adhesion efanelekileyo, enceda ekuphuculeni amandla okubambisana phakathi kodaka kunye ne-substrate, ngokukodwa kwinkqubo yokwakhiwa kwe-coating kunye ne-tiling, inokuphucula ngokufanelekileyo ukusebenza kokubambisana kunye nokuthintela ukuwa.

Ukuphucula ukuxhathisa kokuqhekeka

Ukusetyenziswa kwe-cellulose ether kunceda ekuphuculeni ukuchasana kokuqhekeka kodaka, ngakumbi kwinkqubo yokomisa, i-cellulose ether inokunciphisa iintanda ezibangelwa yi-shrinkage ngokunyusa ukuqina kunye nokuqina kwamandla omdaka.

Ukuphucula ukusebenza kolwakhiwo lodaka

Iselulosi etherinokulungelelanisa ngokufanelekileyo ixesha lokwakhiwa kodaka, yandise ixesha elivulekileyo, kwaye ikwazi ukugcina ukusebenza kakuhle kokwakhiwa kwiqondo lokushisa eliphezulu okanye kwindawo eyomileyo. Ukongeza, inokuphucula ukutyeba kunye nokusebenza kodaka kunye nokuphucula umgangatho wokwakha.

Njengesixhobo sokwakha esisebenzayo kunye nokusingqongileyo, ingqiqo yokubunjwa kwayo kunye nomlinganiselo unquma umgangatho wokusebenza kwayo. Njengesongezo esibalulekileyo, i-cellulose ether inokuphucula iimpawu eziphambili zodaka oluxubileyo, njengokugcinwa kwamanzi, i-rheology, kunye nokubambelela, kwaye idlala indima ebalulekileyo ekuphuculeni ukusebenza kokwakhiwa kunye nomgangatho wodaka. Njengoko ishishini lokwakha liqhubeka nokwandisa iimfuno zalo zokusebenza kwezinto, ukusetyenziswa kwe-cellulose ether kunye nezinye izongezo ezisebenzayo kwi-dry-mix mortar ziya kuba zibanzi ngakumbi, zinika indawo enkulu yenkqubela phambili yezobuchwepheshe.