I-Redispersible Polymer Powder (RDP) i-polymer powder enokuthi ihlaziywe kwakhona emanzini ukuze yenze i-emulsion ezinzileyo. Ngokuqhelekileyo isetyenziswe kwizinto ezisekelwe kwi-samente ezifana nodaka oluxubekileyo. Amacandelo ayo aphambili ahlala e-ethylene-vinyl acetate copolymer (EVA), i-styrene-acrylate copolymer, njl. Ngenxa yokuba i-latex powder ehlaziywayo ine-dispersion, i-adhesion kunye ne-film-forming properties, idlala indima ebaluleke kakhulu kwiinkqubo ezisekelwe kwi-samente. Ngokukodwa njenge-adhesive, ukuphuculwa kwayo kwemisebenzi emininzi kuphucula kakhulu iinkqubo ezisekelwe kwi-samente. Ukusebenza kwezinto eziphathekayo kunye nokuqina.
1. Ukuphucula ukubambelela
Ukubambelela kwizinto ezisekelwe kwi-samente ngumba ophambili ekwakhiweni, kwaye ukukwazi ukuxhamla kwizinto eziqhelekileyo ezisekelwe kwi-cement zibuthathaka. Ngokukodwa xa isetyenziswe kwii-substrates ezahlukeneyo, iingxaki ezifana nokuchithwa kunye nokuqhekeka zivame ukubangelwa lula. I-latex powder edibeneyo isetyenziswe njenge-binder kwiinkqubo ezisekelwe kwi-samente, kwaye umphumo wayo obalulekileyo kukuphucula kakhulu amandla okudibanisa.
Emva kokuba i-latex powder ehlaziywayo ixutywe kunye nodaka lwe-samente emanzini, inokwenza ifilimu yepolymer eqhubekayo kunye neengqungquthela kwizinto ezisekelwe kwi-samente. Olu hlobo lwefilimu alunalo nje ukunamathela okuhle kakhulu, kodwa lunokuphucula umphumo wokudibanisa oomatshini phakathi kwezinto ezisisiseko kunye nesamente, ukwandisa amandla okudibanisa, ngaloo ndlela kuphuculwe amandla okudibanisa phakathi kwezinto ezisekelwe kwi-samente kunye nezixhobo ezahlukeneyo zesiseko. Iyakwazi ukusombulula ngokufanelekileyo ingxaki yokubambisana kwezinto ezisekelwe kwisamente kunye ne-substrates egudileyo okanye ephantsi yokufunxa amanzi (njengeethayile ze-ceramic, iglasi, njl.).
2. Ukuphucula ukuguquguquka kunye nokumelana nokuqhekeka
Emva kokuba izinto ezisekelwe kwi-samente zibe nzima, zivame ukunyanzeliswa ngenxa yobunzima obuphezulu, ngakumbi phantsi kweempembelelo zokutshintsha kweqondo lokushisa kunye namandla angaphandle. Isiganeko sokuqhekeka siyacaca ngakumbi. Ifilimu eyenziwe yi-polymer component kwi-latex powder ehlaziywayo emva kokuqina inokuguquguquka okulungileyo, inokusasaza uxinzelelo kunye nokunciphisa umonakalo kwizinto eziphathekayo ngamandla angaphandle, ngaloo ndlela iphucula ukuguquguquka kunye nokuqhekeka kwezinto ezisekelwe kwi-samente.
Emva kokuba umlinganiselo othile we-latex powder odibeneyo uxutywe kwizinto ezisekelwe kwi-samente, ukuqina kwezinto eziphathekayo kuphuculwe kakhulu, okunokuthi kudlale indima ephazamisayo kwiindawo zokuxininisa uxinzelelo kunye nokunciphisa ukuvela kweentanda. Oku kubaluleke kakhulu kwizinto ezifuna ukumelana nokuguqulwa kwangaphandle (ezifana neenkqubo zokugquma iindonga zangaphandle, izinto eziguquguqukayo ezingenamanzi, njl.).
3. Ukuphucula ukuxhathisa kwamanzi kunye nokumelana nemozulu
Izinto ezisekwe kwisamente zidla ngokuthanda ukuntywila emanzini okanye ukuthotywa kokusebenza xa zibekwe emanzini okanye kumanzi ixesha elide. Izinto zemveli ezisekelwe kwisamente zinezinga eliphezulu lokufunxa amanzi, kwaye amandla abo ayancipha kakhulu, ngakumbi emva kokucwiliswa kwexesha elide. I-latex powder ye-redispersible inokuphucula ukuxhathisa kwamanzi kwizinto ezisekelwe kwi-samente, ngokukodwa ngenxa yokuba ifilimu ye-polymer eyenza emva kokunyanga i-hydrophobic, enokuthintela ngokufanelekileyo ukungena kwamanzi kunye nokunciphisa ukufunxa kwamanzi.
Ukuqulunqwa kwefilimu ye-polymer kunokuthintela ngokufanelekileyo ukukhupha kwamanzi ngaphakathi kwe-cement-based material kwaye ugweme ukuncipha kunye neengxaki eziqhekezayo ezibangelwa ukulahleka kwamanzi ngokukhawuleza ngexesha lokumisa. Oku kwenza kwakhona i-latex powder edibeneyo idlala indima ebalulekileyo ekuphuculeni ukuchasana kwemozulu kunye nokuxhatshazwa kwe-freeze-thaw yezinto ezisekelwe kwi-samente, ngaloo ndlela ukwandisa ubomi benkonzo yezinto.
4. Ukuphucula ukusebenza kolwakhiwo
I-powder ye-latex ye-redispersible ayikwazi nje ukuphucula kakhulu iipropati ezibonakalayo zezixhobo ezisekelwe kwi-samente, kodwa nokuphucula kakhulu ukusebenza kokwakhiwa. Emva kokubandakanya i-latex powder, ukusebenza, ukugcinwa kwamanzi kunye nokumanzi kwezinto ezisekelwe kwi-samente kuphuculwe kakhulu. I-latex powder ye-redispersible inokunyusa i-lubricity ye-cement mortar, yenza kube lula ukuyisebenzisa kunye nokusabalalisa, ngaloo ndlela inciphisa ubunzima kunye neempazamo ekwakhiweni nasekuphuculeni ukusebenza kakuhle.
Iipolymers kwi-latex powder nazo zinokuphucula ukugcinwa kwamanzi kwizinto ezisekelwe kwi-samente, ukunciphisa i-phenomenon yokopha kwezinto, ukuthintela ukulahleka kwamanzi kwangaphambili kwi-slurry, kunye nokuqinisekisa ukuba izixhobo zinamanzi aneleyo okuphendula kwi-hydration ngexesha lenkqubo yokuqina. Oku akugcini nje ukwenza amandla ezinto eziphathekayo, kodwa kuphucula ukusebenza kokwakhiwa.
5. Ukuphucula ukuchasana kwempembelelo kunye nokuxhatshazwa kokugqoka
Kwizinto ezisetyenziswayo, imathiriyeli esekwe kwisamente kaninzi kufuneka imelane neempembelelo ezahlukeneyo zangaphandle, ezinjengokuhamba, ukukhuhlana, njl. njl. Imathiriyeli yesamente eqhelekileyo ayiqhubi kakuhle kule ndawo kwaye ithande ukuguga okanye ukudilika lula. I-latex powder ye-redispersible inokuphucula ukuchasana kwempembelelo kunye nokuxhatshazwa kwempahla ngokuguquguquka kunye nokuqina kwefilimu ye-polymer.
Emva kokongeza i-latex powder edibeneyo, xa izinto ezisekelwe kwi-samente zichatshazelwa yimikhosi yangaphandle, ifilimu ye-polymer eyenziwe ngaphakathi inokufunxa kwaye isasaze amandla empembelelo kunye nokunciphisa umonakalo ongaphezulu. Ngelo xesha, ukubunjwa kwefilimu ye-polymer kunciphisa ukuchithwa kweengqungquthela ngexesha lokugqoka, ngaloo ndlela kuphuculwe kakhulu ukuqina kwezinto.
6. Ukuvumelana nokusingqongileyo
Njengezinto ezihambelana nokusingqongileyo, i-latex powder ehlanjululwayo ayinayo ityhefu kwaye ayinabungozi ngexesha lokusetyenziswa, kwaye ihambelana nesikhokelo sophuhliso lwezinto zokwakha eziluhlaza zanamhlanje. Akugcini nje ukunciphisa ukuveliswa kwenkunkuma yokwakha, kodwa kwandisa ubomi benkonzo yezinto kunye nokunciphisa imfuno yokugcinwa rhoqo kunye nokutshintshwa, ngaloo ndlela kuncitshiswe impembelelo yokusingqongileyo kwinqanaba elithile.
Njenge-binder kwiinkqubo ezisekelwe kwi-samente, ukusetyenziswa kwe-latex powder ehlaziywayo kuphucula kakhulu iipropati ezibanzi zezinto eziphathekayo, kubandakanywa ukunamathela, ukuguquguquka, ukuchasana nokuqhekeka, ukuchasana kwamanzi kunye nokuxhatshazwa kokugqoka. Ukongezelela, ukusebenza kwayo okuphuculweyo kolwakhiwo kunye nobuhlobo bendalo nayo iyenze ukuba isetyenziswe ngokubanzi kwizinto zokwakha. Ngokuqhubela phambili kwetheknoloji kunye nokunyuka kweemfuno zokwakha, i-latex powder edibeneyo iya kudlala indima ebaluleke kakhulu kwizinto ezisekelwe kwi-samente kunye nokubonelela ngezisombululo ezisebenzayo kunye nezizinzileyo kwishishini lokwakha.
Ixesha lokuposa: Sep-29-2024