I-Admixtures idlala indima ephambili ekuphuculeni ukusebenza kwesakhiwo sodaka olomileyo.Oku kulandelayo kuhlalutya kwaye kuthelekise iipropati ezisisiseko ze-latexr powder kunye ne-cellulose, kwaye ihlalutya ukusebenza kweemveliso zodaka ezixubeneyo ezomileyo usebenzisa i-admixtures.
I-latex powder enokuchithwa kwakhona
I-redispersible latexr powder icutshungulwa ngokufafaza ukomiswa kwe-emulsion ekhethekileyo ye-polymer.I-latexr powder eyomileyo ngamanye amaqhekeza angama-80 ~ 100mm ahlanganiswe ndawonye.Ezi ngqungquthela zinyibilika emanzini kwaye zenze i-dispersion ezinzileyo inkulu kancinane kuneengqungquthela ze-emulsion zangaphambili, ezenza ifilimu emva kokuphelelwa ngamanzi kunye nokomisa.
Amanyathelo okuguqula ahlukeneyo enza ukuba i-latex powder ephindwe kwakhona ibe neepropati ezahlukeneyo ezifana nokuxhathisa kwamanzi, ukuxhathisa kwe-alkali, ukumelana nemozulu kunye nokuguquguquka.I-latexr powder esetyenziswe kwi-mortar inokuphucula ukuchasana kwempembelelo, ukuqina, ukuxhathisa ukunxiba, ukukhululeka kokwakhiwa, amandla okubambisana kunye nokubambisana, ukuxhathisa imozulu, ukuchasana nomkhenkce, ukugxotha amanzi, amandla okugoba kunye namandla okuguquguquka kodaka.
Iselulosi ether
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 ngama-agent ahlukeneyo e-etherifying ukufumana ii-ethers ze-cellulose ezahlukeneyo.Ngokweepropathi ze-ionization ze-substituents, i-cellulose ethers inokwahlulwa ibe ngamacandelo amabini: ionic (efana ne-carboxymethyl cellulose) kunye ne-non-ionic (njenge-methyl cellulose).Ngokohlobo lwe-substituent, i-cellulose ether inokohlulwa ibe yi-monoether (efana ne-methyl cellulose) kunye ne-ether exutywe (njenge-hydroxypropyl methyl cellulose).Ngokutsho kwe-solubility eyahlukileyo, inokwahlulwa ibe yi-soluble yamanzi (efana ne-hydroxyethyl cellulose) kunye ne-organic solvent-soluble (efana ne-ethyl cellulose), njl njl. yahlulwe ngokohlobo olukhawulezileyo kunye nomgangatho onyangwayo wokulibaziseka uhlobo lokupheliswa.
Indlela yokusebenza ye-cellulose ether kumdaka ihamba ngolu hlobo lulandelayo:
(1) Emva kokuba i-ether ye-cellulose kumdaka ichithwe emanzini, ukuhanjiswa okusebenzayo kunye okufanayo kwezinto ze-cementitious kwinkqubo kuqinisekiswa ngenxa yomsebenzi ongaphezulu, kunye ne-ether cellulose, njenge-colloid ekhuselayo, "isonga" into eqinileyo. amasuntswana kunye Umaleko wefilimu yokuthambisa yenziwe kumphezulu wayo wangaphandle, okwenza inkqubo yodaka iqine ngakumbi, kwaye iphucula umbane wodaka ngexesha lokuxuba kunye nokugudiswa kokwakhiwa.
(2) Ngenxa yolwakhiwo lwalo lwemolekyuli, isisombululo se-ether se-cellulose senza ukuba amanzi kumdaka angabi lula ukulahleka, kwaye ngokuthe ngcembe akhuphe ixesha elide, enika udaka ngokugcinwa kakuhle kwamanzi kunye nokusebenza.
umcu womthi
Ifayibha yokhuni yenziwe ngezityalo njengeyona nto iphambili ekrwada kwaye icutshungulwa luluhlu lwetekhnoloji, kwaye ukusebenza kwayo kwahlukile kuleyo ye-cellulose ether.Iimpawu eziphambili zezi:
(1) I-insoluble emanzini kunye ne-solvents, kwaye ayinyibiliki kwi-asidi ebuthakathaka kunye nezisombululo ezisisiseko ezibuthathaka
(2) Ifakwe kwi-mortar, iya kukhwelana kwisakhiwo se-dimensional-dimensional kwi-static state, ikhulise i-thixotropy kunye ne-sag resistance of the mortar, kwaye iphucule ukwakhiwa.
(3) Ngenxa yesakhiwo se-fiber ye-dimensional-dimensional ye-wood, inepropati "yokuvala amanzi" kwi-mortar edibeneyo, kwaye amanzi omdaka akayi kuxutywa okanye asuswe ngokulula.Kodwa ayinayo ukugcinwa kwamanzi okuphezulu kwe-cellulose ether.
(4) Umphumo omhle we-capillary we-fiber fiber unomsebenzi "wokuqhuba amanzi" kwi-mortar, eyenza umphezulu kunye nomswakama wangaphakathi we-mortar uvame ukuhambelana, ngaloo ndlela unciphisa ukuqhekeka okubangelwa ukuncipha okungalinganiyo.
(5) I-Fiber fiber inokunciphisa uxinzelelo lwe-deformation yodaka oluqinileyo kunye nokunciphisa ukuncipha kunye nokuqhekeka kodaka.
Ixesha lokuposa: Mar-10-2023