Emulsion na redispersible latex ifu irashobora gukora imbaraga zingirakamaro hamwe nimbaraga zo guhuza kubikoresho bitandukanye nyuma yo gukora firime, bikoreshwa nkumuhuza wa kabiri muri minisiteri kugirango uhuze hamwe na sima ya sima, sima na polymer.
Iyo witegereje microstructure yibikoresho bya polymer-sima yibikoresho, byizerwa ko kongeramo ifu ya latx idasubirwaho ishobora gutuma polymer ikora firime igahinduka igice cyurukuta rwumwobo, kandi bigatuma minisiteri iba yose ikoresheje imbaraga zimbere, zitezimbere imbaraga zimbere za minisiteri. Imbaraga za polymer, bityo zitezimbere kunanirwa kwa minisiteri no kongera imbaraga zanyuma.
Microstructure ya polymer muri minisiteri ntabwo yahindutse kuva kera, kandi ikomeza guhuza bihamye, imbaraga zihindagurika no kwikomeretsa, hamwe na hydrophobique nziza. Uburyo bwo gushiraho ifu ya latx isubirwamo ku mbaraga zifata tile yasanze nyuma yuko polymer yumye muri firime, firime ya polymer ikora ihuriro ryoroshye hagati ya minisiteri na tile kuruhande rumwe, naho kurundi ruhande, polymer muri minisiteri nshya Yongera umwuka mubi wa minisiteri kandi bikagira ingaruka kumiterere no gutembera neza hejuru ya cime, hanyuma mugihe cyo gushiraho, na polymer bikagira ingaruka kumyanda, hanyuma polymer mugihe kigira ingaruka nziza. binder, izagira uruhare mugutezimbere Bond imbaraga zifite ubufasha bwiza.
Ongeramo ifu ya redxersible latex kuri minisiteri irashobora kuzamura cyane imbaraga zo guhuza nibindi bikoresho, kubera ko ifu ya hydrophilique latex hamwe nicyiciro cyamazi cyo guhagarika sima yinjira mumyenge na capillaries ya matrix, hanyuma ifu ya latx ikinjira mumyenge na capillaries. Filime y'imbere irakozwe kandi irashimangirwa neza hejuru yubutaka, bityo bigatuma imbaraga zifatika zihuza ibikoresho bya sima na substrate.
Gutezimbere ifu ya latex kumikorere ya minisiteri biterwa nuko ifu ya latex ari polymer ndende ya polymer hamwe nitsinda rya polar. Iyo ifu ya latex ivanze nuduce twa EPS, igice kitari polarike mumurongo wingenzi wa porojeri ya latx polymer kizaba umubiri wa adsorption uzaba hamwe nubuso butari inkingi ya EPS. Amatsinda ya polar muri polymer yerekejwe hanze hejuru yubuso bwa EPS, kuburyo ibice bya EPS bihinduka kuva hydrophobicity bikagera kuri hydrophilique. Bitewe no guhindura ubuso bwa EPS ukoresheje ifu ya latex, ikemura ikibazo ko uduce twa EPS dushobora guhura namazi byoroshye. Kureremba, ikibazo cyurwego runini rwa minisiteri. Muri iki gihe, iyo sima yongewemo ikavangwa, amatsinda ya polar yamamajwe hejuru yubutaka bwa EPS akorana nuduce twa sima kandi agahuza hafi, kuburyo imikorere ya minisiteri ya EPS itera imbere cyane. Ibi bigaragarira mubyukuri ibice bya EPS bihanagurwa byoroshye na sima paste, kandi imbaraga zihuza zombi zateye imbere cyane.
Igihe cyo kohereza: Werurwe-18-2023