Ifu ya redispersible latex hamwe nibindi bihuza (nka sima, lime yatonywe, gypsumu, nibindi) hamwe nibintu bitandukanye, ibyuzuza nibindi byongeweho (nka methyl hydroxypropyl selulose ether, krahisi ether, lignocellulose, hydrophobique agent, nibindi) kugirango bivangwe kumubiri. gukora minisiteri ivanze. Iyo minisiteri ivanze yumye yongewe mumazi hanyuma ikayungurura, uduce twa poro ya latx tuzakwirakwizwa mumazi hifashishijwe hydrophilique irinda colloid hamwe nogosha imashini. Igihe gikenewe kugirango ifu isanzwe isubirwamo ya porojeri yo gutatanya ni ngufi cyane, kandi iki gihe cyo kugarura igihe nacyo ni ikintu cyingenzi cyo gusuzuma ubuziranenge bwacyo. Mugihe cyo kuvanga hakiri kare, ifu ya latex yamaze gutangira kugira ingaruka kuri rheologiya no mumikorere ya minisiteri.
Bitewe nibiranga bitandukanye no guhindura buri fu ya latx igabanijwe, iyi ngaruka nayo iratandukanye, zimwe zifite ingaruka zifasha gutemba, kandi zimwe zifite ingaruka za thixotropy. Uburyo bw'ingaruka zabwo buturuka mu bintu byinshi, harimo ingaruka z'ifu ya latex ku bijyanye n'amazi mu gihe cyo gutatanya, ingaruka ziterwa n'ubukonje butandukanye bw'ifu ya latx nyuma yo gutatanya, ingaruka za koleoide ikingira, hamwe n'ingaruka za sima n'umukandara w'amazi. Ingaruka zirimo kwiyongera k'umwuka muri minisiteri no gukwirakwiza ibibyimba byo mu kirere, kimwe n'ingaruka z'inyongeramusaruro zacyo ndetse n'imikoranire n'ibindi byongeweho. Kubwibyo, guhitamo no kugabanwa guhitamo ifu ya redxersible powderx nuburyo bwingenzi bwo kugira ingaruka kubicuruzwa. Ikintu gikunze kugaragara cyane ni uko ifu ya redxersible latx isanzwe yongerera umwuka umwuka wa minisiteri, bityo igasiga amavuta yubaka minisiteri, hamwe nubusabane hamwe nubwiza bwifu ya latex, cyane cyane colloid ikingira, kumazi iyo itatanye; Ubwiyongere bwibitekerezo bifasha kunoza ubumwe bwa minisiteri yubwubatsi, bityo bikazamura imikorere ya minisiteri. Ibikurikira, minisiteri itose irimo ifu ya latx ikwirakwizwa hejuru yumurimo. Hamwe no kugabanuka kwamazi kurwego eshatu - kwinjiza urwego rwibanze, ikoreshwa rya hydrata ya sima, hamwe no guhindagurika kwamazi yo hejuru hejuru yikirere, uduce duto twa resin twegera buhoro buhoro, intera igenda ihuza hamwe, hanyuma amaherezo iba firime ikomeza. Iyi nzira iboneka cyane cyane mu byobo bya minisiteri no hejuru yikomeye.
Twakagombye gushimangira ko kugirango iki gikorwa kidasubirwaho, ni ukuvuga, iyo firime ya polymer yongeye guhura n’amazi, ntizongera gutatana, kandi ko colloid ikingira ifu ya redxersible powder igomba gutandukana na sisitemu ya firime ya polymer. Ntabwo arikibazo kiri muri sisitemu ya alkaline ciment mortar, kuko izaterwa na alkali iterwa na hydrata ya sima, kandi mugihe kimwe, adsorption yibikoresho bisa na quartz bizagenda bitandukanya buhoro buhoro na sisitemu, bitarinze kurindwa. hydrophilicity Colloids, idashobora gushonga mumazi kandi ikorwa no gukwirakwizwa inshuro imwe yifu ya redxersible powder, ntishobora gukora mugihe cyumye gusa, ariko no mubihe byigihe kirekire byo kwibiza mumazi. Muri sisitemu itari alkaline, nka sisitemu ya gypsumu cyangwa sisitemu ifite ibyuzuzo gusa, kubwimpamvu zimwe na zimwe colloid ikingira iracyahari igice muri firime ya polymer yanyuma, igira ingaruka kumazi ya firime, ariko kubera ko sisitemu idakoreshwa Muri ikibazo cyo kwibiza mumazi maremare mumazi, na polymer iracyafite imiterere yihariye yubukanishi, ntabwo bigira ingaruka kumikoreshereze yifu ya redxersible powderx muri sisitemu.
Hamwe nogukora firime yanyuma ya polymer, sisitemu yuburyo bugizwe na organisant na organic binders ikorwa mumashanyarazi yakize, ni ukuvuga ibikoresho bya hydraulic bigize urwego ruciriritse kandi rukomeye, kandi ifu ya redxersible latex ikora firime hagati yicyyuho na Ubuso bukomeye. Ihuza ryoroshye. Ubu bwoko bwo guhuza bushobora gutekerezwa nkaho buhujwe na skeleton ikomye kumasoko mato mato. Kubera ko imbaraga zingana za firime ya polymer resin ikorwa nifu ya latex mubisanzwe ni gahunda yubunini burenze ubw'ibikoresho bya hydraulic, imbaraga za minisiteri ubwayo irashobora kwiyongera, ni ukuvuga guhuriza hamwe. Kubera ko guhinduka no guhindagurika kwa polymer birenze cyane kurwego rwimiterere nka sima, ubumuga bwa minisiteri burahinduka, kandi ingaruka zo gukwirakwiza imihangayiko ziratera imbere cyane, bityo bikazamura imbaraga zo guhangana na minisiteri.
Igihe cyo kohereza: Werurwe-07-2023