Umgubo wepolymer osasazekayo kunye nezinye izinto ezidityanisiweyo (ezifana nesamente, ilayimu etyibilikayo, igypsum, njl.njl.) kunye nee-aggregates ezahlukeneyo, izizalisi kunye nezinye izongezo (ezifana ne-methyl hydroxypropyl cellulose ether, i-starch ether, i-lignocellulose, ii-hydrophobic Agents, njl.njl.) zixutywa ngokwasemzimbeni ukwenza umdaka oxutyiweyo owomileyo. Xa umdaka oxutyiweyo owomileyo uxutywe namanzi, phantsi kwesenzo se-hydrophilic protective colloid kunye ne-mechanical shearing, amasuntswana e-latex powder aya kusasazeka aye emanzini.
Ngenxa yeempawu ezahlukeneyo kunye nokuguqulwa komgubo ngamnye we-latex owahlulwe-hlulwe, esi siphumo sahlukile, ezinye zinefuthe lokukhuthaza ukuhamba kwamanzi, ngelixa ezinye zinefuthe lokwandisa i-thixotropy. Indlela esebenza ngayo impembelelo yayo ivela kwiinkalo ezininzi, kubandakanya impembelelo yomgubo we-latex ekubambeni kwamanzi ngexesha lokusasazeka, impembelelo ye-viscosity eyahlukileyo yomgubo we-latex emva kokusasazeka, impembelelo ye-colloid ekhuselayo, kunye nempembelelo yesamente kunye nebhanti yamanzi. Impembelelo yezi zinto zilandelayo ibandakanya impembelelo ekwandeni komxholo womoya womgubo kunye nokusasazwa kwamaqamza omoya, kunye nempembelelo yezongezo zayo kunye nokusebenzisana nezinye izongezo. Ke ngoko, ukhetho olwenziwe ngokwezifiso nolwahlulwe-hlulwe lomgubo we-polymer ophinda uqhekeke yindlela ebalulekileyo yokuchaphazela umgangatho wemveliso. Phakathi kwazo, umbono oqhelekileyo kukuba umgubo we-polymer ophinda uqhekeke udla ngokunyusa umxholo womoya womgubo, ngaloo ndlela uthambise ukwakhiwa komgubo, kunye ne-viscosity kunye ne-viscosity yomgubo we-polymer, ingakumbi xa i-colloid ekhuselayo isasazeka, emanzini. Ukwanda kwe-α kunceda ekuphuculeni ukuhlanganiswa kwe-mortar yokwakha, ngaloo ndlela kuphucula ukusebenza kwe-mortar. Emva koko, i-mortar emanzi equlethe i-latex powder dispersion ifakwa kumphezulu womsebenzi. Ngokuncitshiswa komswakama kumanqanaba amathathu - ukufunxwa komaleko osisiseko, ukusetyenziswa kwe-samente hydration reaction, kunye nokuguquguquka komswakama womphezulu emoyeni, amasuntswana e-resin asondela kancinci kancinci kwi-, i-interface idibana kancinci kancinci, kwaye ekugqibeleni iba yifilimu ye-polymer eqhubekayo. Le nkqubo yenzeka ikakhulu kwii-pores ze-mortar kunye nomphezulu we-solid.
Kufuneka kugxininiswe ukuba, ukuze le nkqubo ingaphinde iguqulwe, oko kukuthi, xa ifilimu yepolymer ingaphinda isasazwe xa idibana namanzi kwakhona, i-colloid ekhuselayo yomgubo wepolymer ophinda usasazwe kufuneka yahlulwe kwinkqubo yefilimu yepolymer. Oku akuyongxaki kwinkqubo yodaka lwesamente ye-alkaline, kuba iya kuxutywa yi-alkali eveliswa kukufuma kwesamente, kwaye kwangaxeshanye, ukufunxwa kwezinto ze-quartz kuya kuyihlukanisa kancinci kancinci kwinkqubo ngaphandle kokukhuselwa yi-hydrophilic. I-Colloid, ifilimu enganyibilikiyo emanzini kwaye yenziwe ngokusasazeka kwe-latex powder ephinda isasazwe kube kanye, inokusebenza kungekuphela nje phantsi kweemeko ezomileyo, kodwa naphantsi kweemeko zokuntywiliselwa emanzini ixesha elide. Kwiinkqubo ezingezizo ii-alkaline, ezifana neenkqubo ze-gypsum okanye iinkqubo ezinezizalisi kuphela, ii-colloids ezikhuselayo zisekho ngokuyinxenye kwifilimu yokugqibela ye-polymer ngesizathu esithile, nto leyo echaphazela ukumelana kwamanzi kwefilimu, kodwa ekubeni ezi nkqubo zingasetyenziswa kwimeko yokuntywiliselwa emanzini ixesha elide, kwaye i-polymer iseneempawu zayo ezizodwa zoomatshini, ayichaphazeli ukusetyenziswa komgubo we-polymer osasazekayo kwezi nkqubo.
Ixesha leposi: Epreli-25-2024