Isesengura ry'ihame ryo kurwanya amazi ya redispersible latex powder ubwoko bwa putty

Ifu ya redispersible latex na sima nibintu nyamukuru bihuza kandi bigakora firime yibintu bidashobora kwihanganira amazi. Ihame rirwanya amazi ni:

Mugihe cyo kuvanga ifu ya redxersible latx na sima, ifu ya latex ikomeza gusubizwa muburyo bwa emulsiyo yambere, kandi uduce twa latx twatatanye muburyo bumwe bwa sima. Nyuma ya sima ihuye namazi, reaction ya hydration iratangira, igisubizo cya Ca (OH) 2 kiruzura kandi kristu ziragwa, kandi kristu ya ettringite hamwe na calcium silicatike ya silicide ikora icyarimwe, kandi uduce twa latx dushyira kuri gel na idafite amazi. kuri sima.

Hamwe niterambere ryimikorere ya hydration, ibicuruzwa biva mumazi bikomeje kwiyongera, kandi uduce duto twa latex tugenda twiyegeranya buhoro buhoro mubutaka bwibikoresho kama nka sima, hanyuma bigakora igipande gifunze cyane hejuru ya gel ya sima. Bitewe no kugabanuka buhoro buhoro ubuhehere bwumye, uduce twinshi twa latx twongeye gupakira neza muri gel hamwe nubusa byegeranijwe kugirango bibe firime ikomeza, ikora imvange hamwe na sima paste ihuza matrise, hanyuma ikora sima ya sima nandi magufa yifu yomekeranye. . Kuberako ibice bya latex byegeranya kandi bigakora firime mugace k’inzibacyuho ihuza sima nandi mafu, agace k’inzibacyuho hagati ya sisitemu ya putty karakomeye cyane, bityo bigatuma amazi arwanya amazi.

Muri icyo gihe, amatsinda akora yakozwe nifu ya redispersible latex nyuma yo kugarurwa, nka acide ya monomer methacrylic ikora yatangijwe mugihe cyo guhuza emuliyoni, irimo amatsinda ya carboxyl, ashobora guhuza na Ca2 +, Al3 +, nibindi muri sima ibicuruzwa bya calcium biremereye. , shiraho ikiraro kidasanzwe, utezimbere imiterere yumubiri wa sima ya minima ikomantaye, kandi wongere ubwuzuzanye bwimikorere. Ibice bya redxersed latex bigize firime ikomeza kandi yuzuye mubusa bwa sisitemu ya putty.