Karolo eae qhalakantsoeng bochapolymerphofoka putty powder: e na le li-adhesion tse matla le thepa ea mochini, e ikhethang ea ho thibela metsi, ho phunyeletsa, le ho hanyetsa alkali e babatsehang le ho se mamelle, 'me e ka ntlafatsa ho boloka metsi le ho eketsa nako e bulehileng bakeng sa ho tšoarella ho matlafalitsoeng.
1. Phello ea seretse se sa tsoa tsoakoa
1) Ntlafatsa kaho.
2) Ho boloka metsi a eketsehileng ho ntlafatsa hydration ea samente.
3) Eketsa bokhoni ba ho sebetsa.
4) Qoba ho phatloha kapele.
2. Phello ea seretse se thata
1) Fokotsa modulus ea elastic ea seretse 'me u eketse ho lumellana le lera la motheo.
2) Eketsa ho feto-fetoha ha maemo 'me u hane ho phunyeha.
3) Ntlafatsa ho hanyetsa ho oela ha phofo.
4) Hydrophobic kapa ho fokotsa ho monya metsi.
5) Eketsa ho khomarela lera la motheo.
The redispersible latex powder e etsa emulsion ea polymer ha e kopana le metsi. Nakong ea ho kopanya le ho omisa, emulsion e felloa ke metsi hape. The latex powder e sebetsa ka har'a putty powder, 'me mokhoa oa ho theha tsamaiso ea motsoako oa samente hydration le sebopeho sa filimi ea phofo ea latex e phethoa ka mehato e mene:
① Ha phofo ea latex e qhalakantsoeng ka ho lekana e kopantsoe le metsi ka har'a phofo ea putty, e qhalakanngoa ka likaroloana tse ntle tsa polymer;
②Gel ea samente e thehoa butle-butle ka hydration ea pele ea samente, karolo ea metsi e tletse ka Ca (OH) 2 e entsoeng nakong ea ts'ebetso ea hydration, 'me likaroloana tsa polymer tse entsoeng ke phofo ea latex li kenngoa holim'a motsoako oa samente oa gel / unhydrated samente motsoako;
③ Ha samente e ntse e na le metsi a mangata, metsi a ka har'a li-capillary pores a fokotseha, 'me likaroloana tsa polymer li kenngoa butle-butle ka har'a li-capillary pores, li etsa lera le pakiloeng ka thata holim'a gel ea samente / motsoako oa samente o se nang metsi le ho tlatsa;
④ Tlas'a ketso ea hydration reaction, base layer absorption le mouoane oa holim'a metsi, mongobo o fokotseha le ho feta, 'me likarolo tse entsoeng ka stacking li kopantsoe filimi e tšesaane,' me lihlahisoa tsa hydration li kopantsoe hammoho ho theha mohaho o feletseng oa marang-rang. Sistimi e kopaneng e entsoeng ke samente hydration le sebopeho sa filimi ea phofo ea latex e ntlafatsa ho hanyetsa ho matla ha putty.
Ho ea ka pono ea ts'ebeliso e sebetsang, matla a putty e sebelisoang e le lera la phetoho pakeng tsa ho kenngoa ka ntle le ho roala ha lerako la ka ntle ha ea lokela ho ba holimo ho feta seretse sa plastering, ho seng joalo ho bonolo ho hlahisa ho phunyeha. Tsamaisong eohle ea ho kenya letsoho, ho tenyetseha ha putty e lokela ho ba holimo ho feta ea substrate. Ka tsela ena, putty e ka ikamahanya hantle le deformation ea substrate mme ea thibela deformation ea eona tlasa ts'ebetso ea maemo a kantle a tikoloho, ea imolla khatello ea maikutlo, le ho fokotsa monyetla oa ho peperana le ho phunya.
Nako ea poso: Oct-27-2022