Ingabe kuyadingeka ukwenza ukwelashwa kwe-anti-alkali primer ngaphambi kokufafaza upende wamatshe wangempela?

1. Uyini upende wamatshe wangempela?

Upende wamatshe wangempela upende okhethekile odala ukuthungwa okufana ne-marble, granite, okusanhlamvu kwezinkuni nezinye izinto zamatshe ebusweni bezakhiwo. Ifanele ukudweba izindonga zangaphakathi nangaphandle, uphahla, phansi kanye nezinye izindawo zokuhlobisa. Izingxenye eziyinhloko zopende wamatshe wangempela yi-resin, i-pigments kanye nezigcwalisi. Ukuphila kwayo kwenkonzo nokusebenza kwayo kuncike kwikhwalithi nokuzinza kwendawo yepende.

2. Kungani kudingekile ukwenza ukwelashwa kwe-primer ukumelana ne-alkali?

Ukwakhiwa kopende wamatshe wangempela kudinga ukusetshenziswa kwe-primer ukumelana ne-alkali yokwelashwa okuyisisekelo. Lokhu kungenxa yokuthi indawo yokwakha yakhiwe ngokuyinhloko ngezinto ezine-alkaline ezinamandla njengosimende nodaka. Okuqukethwe kwe-calcium hydroxide kusimende kuphezulu, futhi inani layo le-pH liphakathi kuka-10.5 no-13, okuzothinta ukwakheka kwamakhemikhali kapende wamatshe wangempela. Umthelela ungase ubangele izinkinga ezifana nokuqhekeka nokuxebuka kukapende.

I-primer emelana ne-alkali iqukethe izithasiselo ezifana ne-polymer fatty amide, engahlangana kahle nosimende nodaka. Ibuye ikhulise ukumelana kopende wamatshe wangempela ezintweni ze-alkali, iqinisekisa ikhwalithi nokuzinza kwendawo yokupenda. Ngakho-ke, kuyadingeka kakhulu ukwenza ukwelashwa kwe-primer ukumelana ne-alkali ngaphambi kokufafaza upende wamatshe wangempela.

3. Ungasifaka kanjani isiqalo esimelana ne-alkali?

Uma usebenzisa i-primer engazweli nge-alkali, udinga kuqala ukupholisha ingaphezulu lesakhiwo ukuze uqinisekise ukuthi ingaphezulu lihlanzekile, libushelelezi, futhi alinawo amafutha, uthuli nokunye ukungcola. Bese usebenzisa i-primer ekhethekile engamelana ne-alkali ukuze uqalise ukuze uqiniseke ngokulingana nokushuba okungaguquki. Ngemva kokuqedwa kokwelashwa kwe-primer, kufanele yomiswe ngokuphelele futhi iqiniswe ngaphambi kokufafaza upende wamatshe wangempela.

4. Isifinyezo

Ngakho-ke, kudingekile kakhulu ukwenza ukwelashwa kwe-primer ukumelana ne-alkali ngaphambi kokufafaza upende wamatshe wangempela, ongaqinisekisa ikhwalithi nokuzinza kwendawo yopende, ukuvimbela ukuqhekeka, ukuxebuka nezinye izinkinga, nokwandisa impilo yesevisi nobuhle bomdwebo wamatshe wangempela.