1. Impushana ye-latex ehlakazeka kabusha
Le nto yokunisela umlomo iyi-polymer ephakeme yamangqamuzana akhethekile, eyenziwa ibe yimpushana ngemva kokumiswa kwesifutho. Ngemva kokuxhumana namanzi, le powder ingaba i-emulsion futhi, futhi inezakhiwo ezifanayo njenge-emulsion. Ngemva kokuba amanzi ehwamuka, angenza ifilimu. Ifilimu inokuguquguquka okuphezulu, ukumelana nesimo sezulu esiphezulu, futhi ibonisa ukunamathela okuphezulu kuma-substrates ahlukahlukene.
Ngakho-ke, kuyimpahla eluhlaza engabalulekile odakeni oluxutshwe okomile, olungathuthukisa ukusebenza, lwandise amandla, luthuthukise ukunamathela kodaka oluyimpushana kuma-substrates ahlukahlukene, luthuthukise ukuguquguquka, amandla acindezelayo, nokumelana nokugqoka kodaka olomile lwempuphu. Ngaphezu kwalokho, Uma ixubene ne-hydrophobic latex powder, ingenza udaka olomile lwempushana lungangeni manzi.
2. I-Cellulose
I-Cellulose ene-viscosities ehlukene inokusetshenziswa okuhlukile. I-Cellulose ingasetshenziswa ku-putty powder yezinga eliphansi ezindongeni zangaphakathi, ezingaqinisa ukugcinwa kwamanzi futhi zikhulise izinga. Iqinile kumakhemikhali, inganqanda isikhutha, inomphumela omuhle wokugcina amanzi, futhi ayiphazanyiswa izinguquko zenani le-pH. Ingasetshenziswa kusuka ku-50,000 kuya ku-200,000 viscosities. Amandla ebhondi alingana ngokuphambene, i-viscosity iphezulu, kodwa amandla mancane, ngokuvamile aphakathi kuka-50,000 no-100,000. Ikakhulukazi ukukhulisa izinga kanye nokwakhiwa kodaka lwempushana eyomile, nokunciphisa ngokufanelekile inani likasimende.
Ngaphezu kwalokho, udaka lukasimende lunesikhathi sokuqina. Ngesikhathi sokuqiniswa, ukunakekelwa okwenziwa ngesandla kuyadingeka ukuze kugcinwe kumanzi. Ngenxa yokugcinwa kwamanzi kwe-cellulose, umswakama odingekayo ukuze kuqiniswe udaka ungatholakala ekugcinweni kwamanzi kwe-cellulose, ngakho-ke ingaqiniswa ngaphandle kokugcinwa okukhethekile.
3. Lignin
Indima ye-lignin odakeni lwempuphu eyomile ukumelana nokuqhekeka. Lapho i-lignin ihlakazeka emanzini, ikhona ngesimo semicu emifushane. Ngokwesibonelo, lapho kwakhiwa izindonga ngenhlabathi ezindaweni ezifuywayo, kunezelwa utshani kakolweni notshani berayisi ukuze kuvinjelwe ukuqhekeka. Uma usebenzisa i-lignin, kungcono ukukhetha izinto ezihlanzekile ngaphandle kokungcola. Lapho uhlonza i-lignin, ungaphendula i-lignin ukuze ubone ukuthi ingabe kukhona uthuli olusele. I-powder eyengeziwe, ikhwalithi embi kakhulu. Noma faka i-lignin encane emanzini bese ubheka, kungcono ukuhlakazeka, ngcono ikhwalithi, okusho ukuthi uma yengezwe ku-powder omile, kulula ukuyihlakaza futhi ngeke idale ibhola.
4. Izinto zokuhlanganisa ezingaphili
I-Ash calcium powder iyi-calcium hydroxide, into evame ukusetshenziswa ehlanganisa izinto ezingaphili. Idlala indima enkulu kakhulu ku-putty powder ukuze kuzuzwe imiphumela engangeni manzi futhi imelana namanzi. Kunezindawo eziningi ezikhiqiza i-limestone e-China, ngakho-ke ukukhiqizwa kwe-lime calcium powder kuvame kakhulu. Kodwa-ke, kwezinye izindawo, i-putty mortar eyenziwe nge-lime calcium powder ekhiqizwayo ingashisa isikhumba sezandla ngesikhathi sokwakhiwa. Ukusabela kwe-exothermic, ngakho-ke uhlaka lwe-ash calcium powder lune-alkaline kakhulu. Uma uhlaka luba lukhudlwana, luzinza kakhulu, futhi kulula ukuqhekeka lapho luklwejwa odongeni. Sifuna ukwaziswa okunempushana yomlotha we-calcium ezinzile, enombhalo omncane, ubumhlophe obuhle, futhi ayigudli izandla.
Isikhathi sokuthumela: Apr-11-2023