Amateka yiterambere yifu ya Redispersible Powder

Ifu isubirwamo (RDP) ni ubwoko bwa poro ya polymer ikoreshwa mubikorwa byubwubatsi nkinyongera mubicuruzwa bishingiye kuri sima nka minisiteri, grout, hamwe no kwishyira hamwe. RDPs yatunganijwe bwa mbere muri 1950 kandi kuva icyo gihe yabaye ikintu cyingenzi mubikoresho byubwubatsi bugezweho. Muri iki kiganiro, tuzareba neza amateka yiterambere rya RDP nakamaro kayo mubikorwa byubwubatsi.

Imyaka yo hambere

RDPs yambere yatunganijwe mumwaka wa 1950 nisosiyete yo mubudage yitwa Wacker Chemie AG. Muri kiriya gihe, Wacker Chemie AG yateguraga ibikoresho bishya bya sintetike kugirango ihuze ibyifuzo by’ubwubatsi nyuma y’intambara. Bashakaga uburyo bwo kunoza imitungo yibikoresho bishingiye kuri sima, nko kurwanya amazi, kuramba, no guhinduka.

Mu minsi ya mbere, RDPs yakozwe no gushonga polyvinyl acetate (PVA) mumashanyarazi hanyuma igatera umuti mucyumba gishyushye aho umusemburo wavamo, ugasiga ifu nziza. Iyi fu irashobora gukwirakwira mumazi byoroshye kandi igakoreshwa nk'inyongera mubicuruzwa bishingiye kuri sima.

Ariko, hari imbogamizi kuri ubu buryo bwa mbere bwa RDP. Kurugero, byari bigoye kugenzura ingano nubunini bwa poro, bishobora kugira ingaruka kumikorere yabyo bishingiye kuri sima. Byongeye kandi, ifu ntiyari ihagaze neza kandi akenshi yabaga ibibyimba cyangwa ibibyimba, bikagorana kuyikoresha no kuyikoresha.

Gutezimbere no guhanga udushya

Mu myaka yashize, abashakashatsi naba injeniyeri bagize ibyo bahindura mubikorwa byumusaruro numutungo wa RDPs. Kurugero, iterambere muri chimie ya polymer ryatumye habaho iterambere rya polymers nshya itanga imikorere inoze kandi itajegajega.

Imwe mu majyambere akomeye mu ikoranabuhanga rya RDP yaje mu myaka ya za 1980 hashyizweho uburyo bushya bwo gukora bwitwa spray drying. Ubu buryo bukubiyemo gutera polymer emulioni mucyumba gishyushye aho amazi ahumeka, hasigara ifu nziza. Ubu buryo bwatumaga hashobora kugenzurwa cyane ingano nubunini bwa poro, bikavamo imikorere ihamye kandi iteganijwe mubicuruzwa bishingiye kuri sima.

Ubundi bushya mu ikoranabuhanga rya RDP bwaje no kwinjiza ifu ya redispersible latex (RPL), ikozwe muri emulsiyo ya latex aho kuba PVA. RPLs itanga uburyo bwiza bwo kurwanya amazi no kuyifata ugereranije na RDPs ishingiye kuri PVA, bigatuma bahitamo gukundwa kubisabwa hanze nka stucco na EIFS (sisitemu yo hanze no kurangiza).

Porogaramu ninyungu

RDPs itanga inyungu nyinshi mubikorwa byubwubatsi, harimo kunoza imikorere, guhuza, no kurwanya amazi. Birashobora gukoreshwa muburyo butandukanye bwibicuruzwa bishingiye kuri sima, harimo minisiteri, grout, ibingana-byonyine, hamwe na tile.

Imwe mu nyungu zingenzi za RDPs nubushobozi bwabo bwo kunoza imikorere no koroshya ikoreshwa ryibicuruzwa bishingiye kuri sima. Barashobora kugabanya ubwinshi bwamazi akenewe kugirango bagere kubyo bifuza, bishobora kuzamura imbaraga nigihe kirekire cyibicuruzwa byarangiye. Barashobora kandi gufasha kugabanya gucamo no kugabanuka, bishobora kubaho mugihe ibicuruzwa bishingiye kuri sima byumye vuba.

Byongeye kandi, RDPs irashobora kunoza guhuza ibicuruzwa bishingiye kuri sima kubutaka butandukanye, harimo ibiti, ibyuma, nububaji. Bashobora kandi kunoza amazi no kuramba kubicuruzwa bishingiye kuri sima, bigatuma biba byiza gukoreshwa mubidukikije bitose cyangwa ahantu hashobora kuba hagenda cyane cyangwa ingaruka.

Umwanzuro

Mu gusoza, amateka yiterambere rya RDP yaranzwe niterambere ryibonekeje muri chimie polymer nibikorwa byo gukora. Kuva mu ntangiriro zicisha bugufi mu myaka ya za 1950, RDP yabaye ikintu cyingenzi mubikoresho byubwubatsi bugezweho, itanga inyungu nyinshi mubijyanye no gukora, gufatana