Inkqubo yokwenziwa komgubo wepolymer enokuphinda ihlakazwe

Intshayelelo

I-polymer powder ye-redispersible (RDP) luhlobo lwepolymer powder olunokuthi luphinde luhlakazwe emanzini ukwenza i-emulsion ezinzileyo. Isetyenziswa ngokubanzi kushishino lokwakha njengesongezo sokuphucula ukusebenza kwezinto ezisekelwe kwisamente. I-RDP iveliswa yinkqubo eyaziwa ngokuba yi-spray-drying, ebandakanya i-atomization yesisombululo se-polymer ibe ngumgubo ococekileyo. Emva koko umgubo uyomiswa kwaye ugaywe kubungakanani obufunwayo.

Inkqubo yokwenziwa kweRDP ibandakanya amanyathelo aliqela, kubandakanywa ukhetho lwepolymer, ukulungiswa kwesisombululo, iatomization, ukomisa, kunye nokusila. Umgangatho wemveliso yokugqibela ixhomekeke kakhulu kumgangatho wezinto ekrwada kunye neeparamitha zenkqubo ezisetyenziswa ngexesha lemveliso.

Ukhetho lwePolymer

Isinyathelo sokuqala kwinkqubo yokwenziwa kwe-RDP kukukhethwa kwepolymer efanelekileyo. Ukukhethwa kwepolymer kusekelwe kwiipropati ezifunwayo zemveliso yokugqibela, njengokuchasana kwamanzi, ukunamathela, kunye nokuguquguquka. Iipolymers ezisetyenziswa ngokuqhelekileyo kwimveliso ye-RDP yi-vinyl acetate-ethylene copolymers, i-acrylic copolymers, kunye ne-styrene-butadiene copolymer.

Ukulungiselela Isisombululo

Emva kokuba i-polymer ikhethiwe, iyachithwa kwi-solvent ukuze yenze isisombululo. I-solvents esetyenziswa ngokuqhelekileyo kwimveliso ye-RDP ngamanzi kunye ne-organic solvents ezifana ne-ethanol kunye ne-isopropanol. Ukuxinwa kwesisombululo sepolymer ngokuqhelekileyo phakathi kwe-10-20%.

Atomization

Inyathelo elilandelayo kwinkqubo yokwenziwa kweRDP kukwenza i-atomization. I-Atomization yinkqubo yokuqhawula isisombululo sepolymer sibe ngamathontsi amancinci. Oku kuqhele ukwenziwa kusetyenziswa umlomo woxinzelelo oluphezulu okanye iatomizer ejikelezayo. Emva koko amathontsi ayomiswa kumlambo oshushu ukuze enze umgubo.

Ukomisa

Umgubo womiswa kumlambo womoya oshushu ukususa isinyibilikisi. Inkqubo yokomisa iqhele ukwenziwa kumaqondo obushushu aphakathi kwe80-120°C. Ixesha lokumisa lixhomekeke kuhlobo lwepolymer esetyenzisiweyo, ukuxinwa kwesisombululo, kunye nobukhulu obufunwayo.

Ukugaya

Inyathelo lokugqibela kwinkqubo yokwenziwa kweRDP kukusila. Ukugaya yinkqubo yokugaya i powder ibe yincinci encinci. Oku ngokuqhelekileyo kwenziwa kusetyenziswa ihammer Mill okanye i-ball Mill. Ubungakanani besuntswana lemveliso yokugqibela ngokuqhelekileyo phakathi kwe-5-50 microns.

Ukuqukumbela

I-polymer powder e-redispersible luhlobo lwepolymer powder olunokuthi luphinde luhlakazwe emanzini ukwenza i-emulsion ezinzileyo. Isetyenziswa ngokubanzi kwishishini lokwakha njengesongezo sokuphucula ukusebenza kwezinto ezisekelwe kwisamente. Inkqubo yokwenziwa kweRDP ibandakanya amanyathelo aliqela, kubandakanywa ukhetho lwepolymer, ukulungiswa kwesisombululo, iatomization, ukomisa, kunye nokusila. Umgangatho wemveliso yokugqibela ixhomekeke kakhulu kumgangatho wezinto eziluhlaza kunye neeparamitha zenkqubo ezisetyenziswa ngexesha lemveliso.