Ekuqaleni. Okokuqala qonda ukuba yintoni nai-polymer powder enokuchithwa kwakhona.
I-polymer powders e-Disperible powders i-polymers engumgubo eyenziwe kwi-emulsion ye-polymer ngokusebenzisa inkqubo yokumisa echanekileyo yokutshiza (kunye nokukhethwa kwezongezo ezifanelekileyo). I-polymer powder eyomileyo ijika ibe yi-emulsion xa idibana namanzi, kwaye inokuthi iphinde ikhutshwe emanzini ngexesha lokudibanisa kunye nokuqina kwenkqubo yodaka, ukwenzela ukuba iinqununu ze-polymer zenze isakhiwo somzimba we-polymer kwi-mortar, efana nenkqubo yesenzo sodaka. i-emulsion ye-polymer, enokuphucula udaka lwesamente. isiphumo ngokwesondo. Udaka olomileyo lweemulsion lubizwa ngokuba ngumgubo wodaka olomileyo (okwaziwa njengodaka olomileyo oluxutyiweyo, udaka olomileyo oluxutyiweyo). Ekubeni i-powder eyomileyo ayifuni ukuqwalasela ukubunjwa kwe-emulsion kunye nokuzinza njenge-emulsions ye-polymer, inani elincinci le-admixture lingenza ukuba udaka lufezekise iipropati ezifunwayo, kwaye lunenzuzo yokupakisha lula, ukugcinwa, ukuthutha kunye nokubonelela ngaphezu kwe-emulsions, i-antifreeze kwaye akukho. ukukhula kokungunda, Ingxaki yebhaktheriya ephilayo, kunye nenzuzo yokuba inokwenziwa ibe yimveliso yecandelo elinye kunye nokupakishwa komxube okulungeleyo okufana nesamente kunye nesanti, kwaye ingasetyenziselwa emva kokongeza amanzi.
Xa ufaka isicelo, xuba kwaye upakishe isanti, i-samente, i-emulsion yomgubo owomileyo kunye nezinye izongezo ezincedisayo kwangaphambili, kwaye kufuneka kuphela ukongeza inani elithile lamanzi ngexesha lokwakhiwa kwendawo ukwenza udaka olomileyo lomgubo kunye nokusebenza okungcono. Undoqo wokuveliswa kwepowder emulsion eyomileyo kukuba iinqununu zepolymer emva kokusasazwa kwakhona kwe-latex powder zibonisa ubungakanani be-particle okanye i-particle size dispersion efana neyokuqala i-emulsion polymer particles. Umlinganiselo othile we-colloid yokukhusela efana ne-polyvinyl alcohol kufuneka yongezwe kwi-emulsion, ukwenzela ukuba i-latex powder iphinde ihlakazwe kwi-emulsion xa idibanisa namanzi. Kuphela nge-dispersibility efanelekileyo inokuthi i-latex powder ifezekise umphumo ongcono. . Umgubo wepolymer ohlakazekayo udla ngokuba ngumgubo omhlophe. Izithako zayo ziquka:
I-polymer resin: Ifumaneka kwindawo engundoqo ye-rubber powder particles, kwaye ikwayeyona nto iphambili yomgubo wepolymer ophinda uhlakazwe.
I-additive (yangaphakathi): kunye ne-resin, idlala indima yokuguqula i-resin. Izongezo (zangaphandle): Izixhobo ezongezelelweyo zongezwa ukwandisa ngakumbi ukusebenza kwepolymer powder.
I-colloid ekhuselayo: umaleko wezinto ze-hydrophilic ezisongelwe kumphezulu we-latex powder particles redispersible, i-colloid ekhuselayo ye-latex eninzi i-redispersible powder yi-polyvinyl alcohol.
I-Anti-caking agent: i-fine mineral filler, isetyenziselwa ukuthintela umgubo werabha kwi-caking ngexesha lokugcinwa kunye nokuthutha kunye nokuququzelela ukuhamba komgubo werabha (olahlwe kwiingxowa zephepha okanye iitanki.)
Indlela yokuchonga umgangatho we-latex powder owenziwe kwakhona?
Indlela ye-1, indlela yothuthu
Thatha umlinganiselo othile we-latex powder ohlaziywayo, uwubeke kwisitya sentsimbi emva kokulinganisa, ubushushu bufikelele kwi-degrees ezingama-500, emva kokutshisa kwiqondo lokushisa eliphezulu lama-500 degrees, upholise kwiqondo lokushisa, kwaye uphinde ulinganise. Ubunzima bokukhanya kunye nomgangatho omhle.
Indlela yesibini, indlela yokuphelisa
Thatha umlinganiselo othile we-latex powder ohlaziywayo kwaye unyibilike kumaxesha ama-5 ubukhulu bamanzi, ugxobhoze kakuhle kwaye uvumele ukuba ume imizuzu emi-5 ngaphambi kokuqaphela. Ngokomgaqo, ukubandakanywa okuncinci okuhlala kwinqanaba elisezantsi, ungcono umgangatho wepolymer powder. Le ndlela ilula kwaye kulula ukuyenza.
Indlela yesithathu, indlela yokwenza ifilimu
Thatha umgangatho othile we-latex powder, unyibilike kumatyeli ama-2 emanzini, uyixube ngokulinganayo, yiyeke ime imizuzu emi-2, uyivuselele kwakhona, ugalele isisombululo kwiglasi ecocekileyo, kwaye ubeke iglasi kwindawo enomthunzi. . Susa xa womile ngokupheleleyo. Jonga ifilimu yepolymer esusiweyo. Ukucaca okuphezulu kunye nomgangatho olungileyo. Emva koko tsala ngokuphakathi, kunye ne-elasticity elungileyo kunye nomgangatho olungileyo. Emva koko ifilimu yanqunyulwa ibe yimichilo, ifakwe emanzini, kwaye yabonwa emva komhla we-1, umgangatho wefilimu wawuncitshiswe ngaphantsi kwamanzi. Le ndlela inenjongo ngakumbi
Ixesha lokuposa: Oct-27-2022