Umgubo wepolymer odispersible yenye yezinto ezisetyenziswa ngokuqhelekileyo kulwakhiwo nakwamanye amashishini. Ukuguquguquka kwayo, ukusebenza kunye noqoqosho kuyenza ibe lukhetho oludumileyo kwizicelo ezininzi. Nangona kunjalo, ngeendlela ezininzi ongakhetha kuzo, kunokuba ngumngeni kubasebenzisi ukuchonga kwaye bakhethe imveliso efanelekileyo kwiimfuno zabo. Kweli nqaku, sixoxa ngezinto eziphambili ekufuneka ziqwalaselwe phambi kokukhetha umgubo wepolymer ophinda-phindayo.
1. Ukuqonda iiPolymer Powders eziRedispersible
Umgubo wepolymer odispersible ngumgubo owomileyo ofunyenwe ngokutshiza i-emulsions ye-polymer eyahlukeneyo kwii-solvents eziphilayo eziguquguqukayo kwaye zome phantsi kweemeko ezithile. Umgubo wepolymer odispersible wenziwa ikakhulu ngezinto ezisisiseko sepolymer, isibophelelo esisebenzayo, iplasticizer kunye ne-inorganic filler. Ngokuyintloko isetyenziswa njenge-binder, ifilimu yangaphambili kunye ne-thickener kwizicelo ezahlukeneyo ezifana ne-samente kunye nezixhobo ezisekelwe kwi-gypsum, iinkqubo zokukhusela amanzi kunye nodaka.
2. Ukuqulunqwa komgubo wepolymer owenziwe ngokutsha
Eyona nto ibalulekileyo, ukubunjwa kwepolymer powder edibeneyo yinto ephambili echaphazela iipropati zepowder kunye nokufaneleka kwayo kwisicelo esijoliswe kuyo. Ke ngoko, ukwakheka kweekhemikhali zepolymer kufuneka kuqwalaselwe ngaphambi kokukhetha imveliso. Uninzi lweepolymers ezihlaziywayo zisekelwe kwi-ethylene vinyl acetate (EVA) kunye ne-vinyl acetate ethylene (VAE), eneempawu ezahlukeneyo kunye neenzuzo.
Iipolymers ze-EVA eziphinda zikwazi ukuphinda zenziwe zibhetyebhetye, zongeza ukunwebeka kwemveliso yokugqibela, kwaye zibonelela ngokuncamathela okugqwesileyo kunye nokumelana nemozulu. Kwelinye icala, iipolymers ze-VAE eziphinda zihlakazwe zinamandla aphezulu kunye nokuxhathisa okungcono kwamanzi kuneepolima ze-EVA, zizenza zilungele usetyenziso lwangaphandle. Iipolymers ze-Acrylic zinezinga eliphezulu lokubambelela kunye nokuhambelana nezinye izinto zokwakha.
3. Iimpawu ezibonakalayo zepolymer powder ephinda ihlakazeka
Iimpawu ezibonakalayo zepolymer powders ezinokuphinda zihlakazwe kufuneka ziqondwe kakuhle ngaphambi kokwenza ukhetho oluyimfuneko. Ezi mpawu zibandakanya ukuhanjiswa kobungakanani besuntswana, iglosi, umbala kunye nokuxinana komgubo. Ezi mpawu zichaphazela ukusebenza, ukuqhubekeka kunye nokubonakala kwemveliso yokugqibela.
Ukusabalalisa ubungakanani be-particle ye-polymer powder e-dispersible ibalulekile njengoko inquma izinga layo lokusabalalisa kwi-substrate. Ukulawulwa ngokucokisekileyo kobungakanani bamasuntswana ngexesha lokwenziwa kwemveliso kubalulekile ekuqinisekiseni iipropathi zepowder ezifanayo. Ubuninzi bobuninzi bomgubo buchaphazela ukugcinwa, ukuthuthwa kunye nokuphathwa kwayo.
4. Itekhnoloji yesicelo
Inkqubo yokukhetha i-polymer powders enokuchithwa kwakhona kufuneka ithathele ingqalelo iteknoloji yesicelo esijoliswe kuyo. Uhlobo ngalunye lomgubo lwepolymer olunokuphinda luhlakazwe luneempawu ezahlukileyo ezenza ezinye iipolymer zifaneleke ngcono kubuchule bokusebenzisa obuthile kunabanye. Umzekelo, i-low-viscosity powders ifaneleka kangcono kwizicelo zokutshiza, ngelixa i-high-viscosity powders inokufuna ukuhluthwa ngesandla.
5. Ukuhambelana komgubo wepolymer owenziwe ngokutsha kunye nezinye izinto
Ukuhambelana nokuqwalaselwa okubalulekileyo xa ukhetha i-polymer powder efanelekileyo kwakhona. Ngaphambi kokukhetha ipowder ethile, kubalulekile ukuvavanya ukuhambelana kwayo kunye nezinye izinto ezisetyenziswe kwimveliso yokugqibela, umzekelo, umgubo okhethiweyo kufuneka udibanise ngokungenamthungo kunye nesamente kunye nezinye izibophelelo.
6. Iimfuno zokusebenza
Iipropati ezifunwayo zemveliso yokugqibela zimisela ukhetho lwepolymer powder efanelekileyo enokuphinda ihlakazwe. Kuyimfuneko ukucacisa iimpawu ezibonakalayo kunye neekhemikhali zepolymer powders ezinokuphinda zihlakazwe, kubandakanywa ukunyanzeliswa kobuso, i-pH, ubushushu beglasi yokutshintsha, kunye nemodyuli yokuqina.
Ukuchonga kunye nokukhetha umgubo wepolymer onokuthi uphinde uhlakazeke yinkqubo ebalulekileyo ekufuneka ithathele ingqalelo ukwakheka kweekhemikhali zomgubo, iipropathi ezibonakalayo, ubuchule bokusebenzisa, ukuhambelana kunye neemfuno zokusebenza. Imiba ekufuneka iqwalaselwe ibandakanya ukuhanjiswa kobungakanani besuntswana, ukuxinana ngobuninzi kunye neglosi. Ekugqibeleni, kubalulekile ukuchonga iipropati ezifanelekileyo kwisicelo esicetywayo, ezifana no-elasticity, ukumelana nemozulu, kunye nokuhambelana nezinye izinto zokwakha. Ngokuqwalasela ezi zinto, abasebenzisi banokukhetha i-polymer powder edibeneyo ehlangabezana neemfuno zabo, ibonelela ngokusebenza kakuhle, kwaye ixhasa iinjongo zabo zizonke.
Ixesha lokuposa: Aug-25-2023