Ingaruka ya Redispersible Emulsion Powder kumiterere ya Slurry

Ifu ya redispersible latex ni ibikoresho bisanzwe bikoreshwa muburyo bwa gelline byabonetse mugutera spray-yumye polymer emulion hamwe na alcool ya polyvinyl nka colloid ikingira. Irashobora gusaranganywa neza mumazi kugirango ikore emulisiyo iyo ihuye namazi. Ongeramo ifu ya redispersible latex irashobora kunoza imikorere ya sima ivanze.

Mugihe ibikoresho bishingiye kuri sima byongewemo nifu ya latx ihuza amazi, reaction ya hydration iratangira, kandi calcium hydroxide ya calcium ihita igera kuri kwiyuzuzamo kandi kristu ikagwa, kandi mugihe kimwe, kristu ya ettringite hamwe na calcium silicate hydrat gels. Ibice bikomeye bishyirwa kuri gel hamwe na sima idafite amazi. Mugihe reaction ya hydration igenda ikura, ibicuruzwa biva mumazi byiyongera, kandi ibice bya polymer bigenda byegeranya buhoro buhoro mu mwobo wa capillary, bigakora igipande cyuzuye cyane hejuru ya gel no kuri sima idafite amazi. Ibice bya polymer byegeranijwe byuzura buhoro buhoro imyenge, ariko ntabwo byuzuye hejuru yimbere yimbere. Mugihe amazi arushijeho kugabanuka no kuvomera cyangwa gukama, ibice bya polymer byegeranye cyane kuri gel no muri pores bihurira muri firime ikomeza, bigakora imvange ihuza imiyoboro ya sima ihumeka kandi igateza imbere guhuza ibicuruzwa hamwe nibiterane.

Kuberako ibicuruzwa biva hamwe na polymers bigize igipfundikizo kuri interineti, birashobora kugira ingaruka kumikurire ya ettringite na calcium hydroxide ya calcium ya calcium; kandi kubera ko polymers yegeranya muri firime mu byobo byimbere yinzibacyuho yimbere, ibikoresho bya polymer sima bishingiye kubice Inzibacyuho ni byinshi. Amatsinda akora muri molekile zimwe na zimwe za polymer azanatanga ibisubizo bihuza na Ca2 + na A13 + mubicuruzwa bitanga amazi ya sima kugirango bibe bihuza ibiraro bidasanzwe, bitezimbere imiterere yumubiri wibikoresho bishingiye kuri sima, bikureho imihangayiko yimbere, kandi bigabanye kubyara microcrack.

Mugihe imiterere ya gel ya sima igenda itera imbere, amazi arakoreshwa hanyuma uduce twa polymer tugahita twifungira mu myobo. Mugihe sima irushijeho kuba nziza, ubuhehere buri mu myobo ya capillary buragabanuka, kandi ibice bya polymer byegeranya hejuru yubutaka bwa sima hydrata ya geli / ivangwa rya sima idafite amazi hamwe na hamwe, bityo bigakora igipande gikomeza gipfundikirwa hamwe nuduce twinshi twuzuye hamwe na polymer yumuti cyangwa yifata.

Emuliyoni yatatanye ya porojeri ya redxersible ifu irashobora gukora firime idashobora gukama firime (polymer net umubiri) nyuma yo gukama, kandi uyu mubiri muto wa elastike ya modulus polymer urashobora kunoza imikorere ya sima; icyarimwe, muri molekile ya polymer Amatsinda amwe ya polar muri sima yitwara muburyo bwa chimique hamwe nibicuruzwa bitanga amazi ya sima kugirango bibe ibiraro bidasanzwe, bitezimbere imiterere yumubiri wibicuruzwa bivangwa na sima, kandi bigabanye kandi bigabanye kubyara ibice. Nyuma yo kongerwamo ifu ya latx yongeyeho, umuvuduko wambere wa hydrata ya sima uratinda, kandi firime ya polymer irashobora gupfunyika igice cyangwa burundu ibice bya sima, kugirango sima ibe yuzuye neza kandi imitungo yayo itandukanye irashobora kunozwa.