Yintoni i-latex powders enokuphinda ihlakazwe?

I-Redispersible latex powder (RLP), eyaziwa ngokuba yi-polymer powder (RPP), i-free-flowing, i-water-dispersible powder efunyenwe ngokutshiza-yomisa i-polymer latex emulsion. Iqukethe amasuntswana e-polymer, ngokuqhelekileyo kunye ne-core-shell structure, kunye neentlobo ezahlukeneyo zokudibanisa ezifana ne-colloids ekhuselayo, i-plasticizers, i-dispersants, kunye ne-anti-foaming agents. I-RLP yenzelwe ukuphucula ukusebenza kunye neepropati zezinto ze-cementitious, kubandakanywa ukunamathela, udaka, ukunikezelwa, kunye neengubo, ngokunyusa ukunamathela, ukuguquguquka, ukuchasana kwamanzi, ukusebenza kunye nokuqina.

Inkqubo yokwenza i-latex powder ephinda ihlakazwe ibandakanya amanyathelo amaninzi:

1. Ukuveliswa kwe-Emulsion yePolymer: Inkqubo iqala ngokuveliswa kwe-polymer emulsion nge-polymerization ye-monomers ezifana ne-vinyl acetate, i-ethylene, i-acrylic esters, okanye i-styrene-butadiene phambi kwee-surfactants, i-emulsifiers, kunye ne-stabilizers. Ukusabela kwe-emulsion polymerization ngokuqhelekileyo kuqhutyelwa emanzini phantsi kweemeko ezilawulwayo ukuvelisa i-latex dispersions ezinzileyo.
2. Ukutshiza Ukomisa: I-emulsion ye-polymer emva koko ixhomekeke kwi-spray drying, inkqubo apho i-emulsion i-atomized ibe ngamaconsi amahle kwaye yaziswa kumlambo womoya oshushu ngaphakathi kwegumbi lokumisa. Ukunyuka ngokukhawuleza kwamanzi kumaconsi kukhokelela ekubunjweni kweengqungquthela eziqinileyo, eziqokelelwa njengomgubo owomileyo phantsi kwegumbi lokumisa. Ngethuba lokumisa ukutshiza, izongezo ezifana ne-colloids ezikhuselayo kunye ne-plasticizers zingabandakanywa kwiinqununu ze-polymer ukuphucula ukuzinza nokusebenza kwazo.
3. I-Particle Surface Treatment: Emva kokumisa isitshizi, i-latex powder ephinda ihlakazwe inokuthi iqhube unyango olungaphezulu ukuze iguqule iimpawu zayo kunye neempawu zokusebenza. Ukunyangwa komphezulu kunokubandakanya ukusetyenziswa kweengubo ezongezelelweyo okanye ukufakwa kwezongezo ezisebenzayo ukunyusa ukunamathela, ukuxhathisa kwamanzi, okanye ukuhambelana namanye amacandelo kwimiqulu yesamente.
4. Ukupakishwa kunye noGcino: Umgubo wokugqibela welatex onokuphinda usasazwe upakishwa kwiingxowa okanye kwizikhongozeli ezikwaziyo ukumelana nokufuma ukuze ukhuseleke kubumanzi nokungcoliseka kwendalo. Iimeko ezifanelekileyo zokupakisha kunye nokugcinwa ziyimfuneko ukugcina umgangatho kunye nokuzinza kwe powder ngexesha.

Redispersible latex powder iqhelekile ukuba mhlophe okanye mhlophe-mhlophe ngombala kwaye inobungakanani besuntswana losasazo, ukusuka kwiimicrometer ezimbalwa ukuya kumashumi eemicrometers. Ihlakazeka ngokukhawuleza emanzini ukwenza i-emulsions ezinzileyo okanye i-dispersions, enokuthi ifakwe ngokulula kwiifom ze-cementitious ngexesha lokuxuba kunye nokusetyenziswa. I-RLP isetyenziswa ngokubanzi kushishino lokwakha njengesongezo esiguquguqukayo sokuphucula ukusebenza, ukusebenza, kunye nokuqina kwezinto ezahlukeneyo zokwakha kunye nofakelo.