I-distrible polymer powder nezinye izinamathiseli ze-inorganic (ezinjengesimende, i-lime evuthayo, i-gypsum, ubumba, njll. Lapho kufakwa i-powder eyomile emanzini futhi ivuswe, ngaphansi kwesenzo se-colroud prolrophilic prolloid kanye ne-mehendi, izinhlayiya ze-latex ze-towx zingasatshalaliswa emanzini, kwanele ukwenza i-latex ye-latex ye-latex ngokugcwele. Ukwakheka kwe-ruble powder kuhlukile, okunomthelela kwi-Rheology yodaka kanye nezakhiwo ezahlukahlukene zokwakha ama-bubble for the powder kanye nezinye izithasiselo zenza imisebenzi ye-latex ye-fleatx kanye neminye imisebenzi Thixotropy, kanye nokwanda kokuvuka.
Ngokuvamile kuzwakala ukuthi indlela eyakhiwe kabusha ye-latex tablex ithuthukisa ukusebenziseka kodaka olusha ukuthi i-tolloid ye-latex, ikakhulukazi i-colloid ye-latex, inesifiso samanzi lapho kusatshalaliswa, okuthuthukisa ukubumbana kodaka lokwakha.
Ngemuva kosimende omusha oqukethe i-latex powder disparverd yakhelwe, ngokumuncwa kwamanzi ngobuso besisekelo, ukusetshenziswa kancane kancane kwe-hydration, kanye ne-interface kancane kancane, futhi kancane kancane ama-resin aqhuma kancane kancane. ekugcineni u-polymerized ungene kwifilimu. Inqubo yokuhlelwa kwefilimu ye-polymer ihlukaniswe izigaba ezintathu. Esigabeni sokuqala, izinhlayiya ze-polymer zihamba ngokukhululeka ngesimo sokunyakaza kwe-browrowian emulsion yokuqala. Njengoba amanzi ehwamuka, ukunyakaza kwezinhlayiya ngokwemvelo ngokwengeziwe futhi kukhawulelwe ngokwengeziwe, kanye nokungezwani kwezingcweti phakathi kwamanzi futhi umoya ubangela ukuba bavumelane kancane kancane. Esigabeni sesibili, lapho izinhlayiya ziqala ukuxhumana nazo, amanzi kunethiwekhi avele aqhamuke phakathi kwe-capillary, kanti ukungezwani okuphezulu okusetshenziselwa ukwenziwa kwezimpawu ze-latex ukubenza bahlanganiswe ndawonye, kanti namanzi asele agcwalise ama-pores, futhi ifilimu lakhiwe cishe. Isiteji sesithathu nesokugcina sinika amandla amandla (kwesinye isikhathi abizwa nge-self-adhesion) ama-polymer molecule ukwakha ifilimu eqhubekayo ngempela. Ngesikhathi sokwakhiwa kwefilimu, izinhlayiya ze-latex ze-leatex eziqhelile zehlukanisa esigabeni esisha sefilimu esisha ngengcindezi ephezulu. Ngokusobala, ukuze i-polymer powder ehlakazekile ukuze ikwazi ukwakha ifilimu olimini oluvuselelayo, amazinga okushisa aphansi wefilimu (i-MFT) kumele aqinisekiswe ukuthi angaphansi kokushisa kodaka.
Ama-colloids - i-polyvinyl alcohol kumele ihlukaniswe ngohlelo lwe-polymer membrane. Lokhu akuyona inkinga ohlelweni luka-Alkaline Cement Jaumer, ngoba utshwala be-polyvinyl buzotholwa yi-alkali ekhiqizwe yi-yment hydration, futhi i-adsorption yezinto ezibonakalayo ze-quartz izohlukanisa kancane kancane i-polyvinyl alcohol kusuka ohlelweni, ngaphandle kwe-hydrophilic prolroid evikelayo. , Ifilimu yakhiwa ngokuhlakazwa i-latex tablex evuselelayo, okuyi-insoluble emanzini, ayikwazi ukusebenza kuphela ezimeni ezomile, kodwa nasezimweni zokucwiliswa kwamanzi okude. Vele, ezinhlelweni ezingezona ze-alkaline, ezinjenge-gypsum noma amasistimu anabacwebezelayo kuphela, ngoba i-polyvinyl alcohol isakanyezeke ngokwengxenye yefilimu, lapho ama-polymer asasetshenziselwa izici zawo zemishini, futhi i-polymer powder isengasetshenziswa kulezi zinhlelo.
Ngokwakheka kokugcina kwefilimu ye-polymer, kwakhiwa uhlelo lwe-Inorganic ne-Organic ngodaka lwelapha, okungukuthi, ithambo le-brittle kanye ne-hard akhiwe nge-hydraulic izinto, kanye ne-polymer powder eyenziwe ngegebe nangaphezulu. inethiwekhi eguquguqukayo. Amandla asheshayo kanye nokuhlangana kwefilimu ye-polymer resin eyakhiwe yi-latex powder iyathuthukiswa. Ngenxa yokuguquguquka kwe-polymer, umthamo wokuwohloka uphakeme kakhulu kunesakhiwo esiqinile setshe likasimende, ukusebenza kwezimo zodaka kuyathuthukiswa, futhi umphumela wokuxineka uthuthukile ngcono kakhulu, ngaleyo ndlela uthuthukise ukumelana nodaka kodaka.
Ngokukhuphuka kokuqukethwe kwe-polymer powder ehlakazekile, uhlelo lonke lukhula lubheke epulasitiki. Endabeni yokuqukethwe okuphezulu kwe-latex powder, isigaba se-polymer ku-cuter udaka kancane kancane sidlula isigaba somkhiqizo we-inorganic hydration, i-cindercher, amandla e-hydration, futhi amandla e-hydration, futhi i-hydration, amandla okubopha, ukuguquguquka "kombusi oguqulwe nge-polymer powder. Ama-polymer powders avumela ifilimu le-polymer (ifilimu laseTotex) ukwakha kanye nokwenza ingxenye yezindonga ze-pore, ulwelwesi lwangaphakathi ngodaka. Ngaleso sikhathi sokwandisa amandla okubumbana. Ama-polymers athuthukisa ukuguquguquka nokuqina kodaka. Indlela yokwanda kokuxineka kwesivuno nokwehluleka ukufakwa, lapho kufakwa amandla ngenxa yokuthuthuka ngokuguquguquka nokuqina, futhi akhiphe kuze kucindezelwe okuphezulu. Ngaphezu kwalokho, izizinda ze-polymer ziphinde zivikele ukuhlanganiswa kwama-microcracks kuma-macks. Ngakho-ke, i-polymer powder ehlakazekile inyusa ukucindezela nokwehluleka kwezinto ezibonakalayo.
Ifilimu le-polymer ku-polymer-modified ngodaka linomphumela obaluleke kakhulu ekuqiniseni kodaka. I-polymer popermer evuselelwayo esatshalaliswa esibonakalayo idlala enye indima ebalulekile ngemuva kokuhlakazeka futhi yakhiwa kwifilimu, okuwukukhulisa ukunamathela ezintweni zokwazisa. Ngokwemvelo yendawo ebonakalayo phakathi kwe-powder polymer-modified ceramic tile bonder usimende kanye ne-ceramic tile, ifilimu eyakhiwa yi-polymer yakha ibhuloho phakathi kwe-vitrified ceramic amuncy kanye ne-matrix kasimende ephansi. Indawo yokuxhumana phakathi kwezinto ezimbili ezingafani nengozi ekhethekile enkulu lapho ifomu lokuqhekeka oluncane futhi liholela ekulahlekelweni kokunamathela. Ngakho-ke, ikhono lamafilimu we-latex ukwelapha ama-shrinkage rackers adlala indima ebalulekile kuma-tile anamathela.
Ngasikhathi sinye, i-polymer powder ebonakalayo equkethe i-ethylene inama-adhesion agqamile kuma-organic substrates, ikakhulukazi izinto ezifanayo, njenge-polyvinyl chloride ne-polystyrene. Isibonelo esihle se
Isikhathi sePosi: Oct-31-2022