Umgubo welatex ophinda uqhekeke yi-emulsion ekhethekileyo esekwe emanzini kunye ne-polymer binder eyenziwe ngokutshiza nge-vinyl acetate-ethylene copolymer njengezinto eziphambili ezikrwada. Emva kokuba inxalenye yamanzi iphuphuma, amasuntswana epolymer enza ifilimu yepolymer nge-agglomeration, esebenza njenge-binder. Xa umgubo welatex ophinda uqhekeke usetyenziswa kunye neeminerali ze-gelling ezingaphiliyo ezifana nesamente, unokutshintsha i-mortar. Imisebenzi ephambili yomgubo welatex ophinda uqhekeke yile ilandelayo.
(1) Phucula amandla okubopha, amandla okutsalwa kunye namandla okugoba.
Umgubo welatex ophinda udibane unokuphucula kakhulu amandla okubopha kwesamente. Okukhona ubuninzi bomthamo wongezwa, kokukhona ukuphakamisa kukhulu. Amandla aphezulu okubopha anokuthintela ukushwabana ukuya kwinqanaba elithile, kwaye kwangaxeshanye, uxinzelelo olubangelwa kukuguquguquka kulula ukulusasaza nokukhulula, ngoko ke amandla okubopha abaluleke kakhulu ekuphuculeni ukumelana nokuqhekeka. Izifundo zibonise ukuba isiphumo sokusebenzisana kwe-cellulose ether kunye nomgubo wepolymer sinceda ukuphucula amandla okubopha kwesamente.
(2) Nciphisa i-modulus elastiki yesamente, ukuze isamente ebhityileyo yesamente ibe nokuguquguquka okuthile.
I-modulus ye-elastic ye-redispersible latex powder iphantsi, yi-0.001-10GPa; ngelixa i-elastic modulus ye-cement mortar iphezulu, yi-10-30GPa, ngoko ke i-elastic modulus ye-cement mortar iya kuncipha xa kongezwa i-polymer powder. Nangona kunjalo, uhlobo kunye nobungakanani be-polymer powder nazo zinefuthe kwi-modulus ye-elastic. Ngokubanzi, njengoko umlinganiselo we-polymer kwi-cement usanda, i-modulus ye-elasticity iyancipha kwaye ukukhubazeka kuyanda.
(3) Ukuphucula ukumelana namanzi, ukumelana ne-alkali, ukumelana nokukrweleka kunye nokumelana neempembelelo.
Ulwakhiwo lwe-network membrane olwenziwe yi-polymer luvala imingxunya kunye neentanda kwi-samente mortar, lunciphisa ukubola komzimba oqinileyo, kwaye ngaloo ndlela luphucula ukungenwa kwamanzi, ukumelana namanzi kunye nokumelana neqhwa kwe-samente mortar. Esi siphumo siyanda ngokwanda komlinganiselo we-polymer-samente. Ukuphuculwa kokumelana nokuguguleka kunxulumene nohlobo lomgubo we-polymer kunye nomlinganiselo we-polymer kwi-samente. Ngokubanzi, ukumelana nokuguguleka kuyaphucuka njengoko umlinganiselo we-polymer kwi-samente usanda.
(4) Ukuphucula ukutyibilika nokusebenza kakuhle kwesamente.
(5) Ukuphucula ukugcinwa kwamanzi kwi-mortar kunye nokunciphisa ukufuma kwamanzi.
I-polymer emulsion eyenziwe ngokunyibilikisa umgubo we-polymer ophinda uchitheke emanzini isasazeka kwi-mortar, kwaye ifilimu ye-organic eqhubekayo yenziwa kwi-mortar emva kokuqina. Le filimu ye-organic inokuthintela ukufuduka kwamanzi, ngaloo ndlela inciphisa ukulahleka kwamanzi kwi-mortar kwaye idlala indima ekugcinweni kwamanzi.
(6) Nciphisa into yokuqhekeka
Ukwandiswa kunye nokuqina kwe-polymer modified cement mortar kungcono kakhulu kune-metal eqhelekileyo yesamente. Ukusebenza kwe-flexural kungaphezulu kwe-2 ye-metal eqhelekileyo yesamente; ukuqina kwempembelelo kuyanda ngokunyuka komlinganiselo we-polymer cement. Ngokunyuka kobungakanani bomgubo we-polymer ongezelelweyo, isiphumo se-flexible cushioning se-polymer sinokuthintela okanye sibambezele uphuhliso lweentanda, kwaye kwangaxeshanye sinesiphumo esihle sokusasazeka koxinzelelo.
Ixesha lokuthumela: Juni-20-2023