Indima yeziphinde zisasazweipholimaumgubokwi-putty powder: ine-adhesion eyomeleleyo kunye neempawu zoomatshini, ukungangeni kwamanzi okugqwesileyo, ukunyanzeliswa, kunye nokumelana okugqwesileyo kwe-alkali kunye nokumelana nokunxiba, kwaye inokuphucula ukugcinwa kwamanzi kunye nokunyusa ixesha elivulekileyo lokuqina okuphuculweyo.
1. Isiphumo sodaka olusandul’ ukuxutywa
1) Ukuphucula ukwakhiwa.
2) Ukugcinwa kwamanzi okongeziweyo ukuphucula i-cement hydration.
3) Ukwandisa ukusebenza.
4) Gwema ukuqhekeka kwangoko.
2. Isiphumo sokuqiniswa kodaka
1) Nciphisa i-modulus elastic yodaka kwaye ukwandise ukuhambelana nomgangatho wesiseko.
I-2) Ukwandisa ukuguquguquka kunye nokuchasana nokuqhekeka.
3) Ukuphucula ukuchasana nokuwa kwe powder.
4) I-Hydrophobic okanye ukunciphisa ukufunxa kwamanzi.
5) Ukwandisa ukunamathela kwinqanaba lesiseko.
I-latex powder enokuchithwa kwakhona yenza i-emulsion ye-polymer ngokudibana namanzi.Ngethuba lenkqubo yokuxuba kunye nokomisa, i-emulsion iyancipha kwakhona.I-latex powder isebenza kwi-putty powder, kwaye inkqubo yokwenziwa kwenkqubo edibeneyo ye-samente hydration kunye nokwakheka kwefilimu ye-latex powder igqitywe ngamanyathelo amane:
①Xa i-latex powder ehlaziywayo idityaniswe ngokulinganayo namanzi kwiputty powder, iyahlakazwa ibe ngamasuntswana epolymer;
②Ijeli yesamente yenziwa ngokuthe ngcembe nge-hydration yokuqala yesamente, isigaba se-liquid sigcwele i-Ca (OH) 2 eyenziwe ngexesha lenkqubo ye-hydration, kwaye iinqununu ze-polymer ezenziwe ngumgubo we-latex zifakwe kumphezulu we-sement gel / umxube weqhekeza lesamente ongenamanzi;
③ Njengoko i-samente iqhubeka i-hydrated, amanzi kwi-capillary pores ayancipha, kwaye amasuntswana e-polymer agcinwa ngokuthe ngcembe kwi-capillary pores, eyenza umaleko opakishwe ngokuqinileyo kumphezulu we-sement gel / umxube we-samente engena-hydrated kunye ne-filler;
④ Phantsi kwentshukumo ye-hydration reaction, ukufunxwa kwesiseko kunye nokunyuka komphezulu, ukufuma kuye kuncitshiswe ngakumbi, kwaye iileya ezibunjiweyo zokupakisha ziyadityaniswa zibe yifilim encinci, kwaye iimveliso ze-hydration reaction zidityaniswa kunye ukwenza ubume bothungelwano olupheleleyo.Inkqubo edibeneyo eyenziwe nge-cement hydration kunye ne-latex powder film formation iphucula ukuchasana okuguquguqukayo kwe-putty.
Ukususela kumbono wesicelo esisebenzayo, amandla e-putty asetyenziswe njengoluhlu lwenguqu phakathi kwe-insulation yangaphandle kunye nokugquma kwodonga lwangaphandle akufanele kube phezulu kunodaka lokutyabeka, ngaphandle koko kulula ukuvelisa ukuqhekeka.Kuyo yonke inkqubo yokugquma, ukuguquguquka kwe-putty kufuneka kube phezulu kune-substrate.Ngale ndlela, i-putty inokuziqhelanisa ngcono ne-deformation ye-substrate kunye ne-buffer deformation yayo phantsi kwesenzo sezinto ezisingqongileyo zangaphandle, ukunciphisa uxinzelelo loxinzelelo, kunye nokunciphisa ukuba nokwenzeka kokuqhekeka kunye nokuxobulwa kwengubo.
Ixesha lokuposa: Oct-27-2022