Ingaruka yifu ya emulsiya na selile ya ether muri tile yometse

Tile yometseho nimwe mubisabwa binini byumye-bivanze na minisiteri kuri ubu. Ubu ni ubwoko bwa sima nkibikoresho byingenzi bya sima kandi byuzuzwa ningingo zegeranijwe, ibikoresho bigumana amazi, imbaraga zambere, ifu ya latex nibindi byongeweho cyangwa kama. imvange. Mubisanzwe, bigomba gusa kuvangwa namazi iyo bikoreshejwe. Ugereranije na sima isanzwe ya sima, irashobora kunoza cyane imbaraga zihuza hagati yibintu bigaragara hamwe na substrate, ifite imbaraga zo kunyerera kandi ifite amazi meza kandi irwanya ubushyuhe. Kandi ibyiza byo kurwanya ubukonje bwa cycle, cyane cyane bikoreshwa mugushushanya inyubako zimbere ninyuma yinyuma, amabati hasi nibindi bikoresho byo gushushanya, bikoreshwa cyane murukuta rwimbere ninyuma, hasi, ubwiherero, igikoni nahandi hantu ho gushushanya, kuri ubu ikoreshwa cyane ceramic tile ihuza ibikoresho.

Mubisanzwe iyo dusuzumye imikorere yifata ya tile, ntitwita gusa kubikorwa byayo nubushobozi bwo kurwanya kunyerera, ahubwo tunitondera imbaraga za mashini nigihe cyo gufungura.Cellulose ethermu gufatira tile ntabwo bigira ingaruka gusa kumiterere ya rheologiya yumuti wa farashi, nko gukora neza, gufatisha icyuma, nibindi, ariko kandi bigira ingaruka zikomeye kumiterere yubukorikori bwa tile. Ingaruka kumwanya wo gufungura tile yifata

Iyo ifu ya emulsiyo na selulose ether ifatanije hamwe na minisiteri itose, amakuru amwe yerekana ko ifu ya emulsiyo ifite imbaraga za kinetic zo guhuza ibicuruzwa biva mumazi ya sima, kandi ether ya selile ibaho cyane mumazi yo hagati, bigira ingaruka kumyuka myinshi kandi igashyiraho igihe. Ubusumbane bwubuso bwa selile ya selile burenze ubw'ifu ya emulsiyo, kandi gutunganyiriza ether nyinshi ya selile kumurongo wa minisiteri bizagira akamaro mugushinga imigozi ya hydrogène hagati yubuso bwibanze na selile.

Muri minisiteri itose, amazi yo muri minisiteri arahumuka, kandi ether ya selile ikungahaye hejuru, kandi hazakorwa firime hejuru yubutaka bwa minisiteri mu minota 5, bizagabanya umuvuduko ukurikiraho, kuko amazi menshi ari Yakuwe muri minisiteri yuzuye Igice cyacyo cyimukira murwego ruto rwa minisiteri, kandi firime yakozwe mugitangiriro irashonga igice, kandi kwimuka kwamazi bizazana ubukire bwa selireose ether hejuru yubutaka.

Kubwibyo, imiterere ya firime ya selile ya ether hejuru yubutaka bwa minisiteri igira uruhare runini mumikorere ya minisiteri.

1) Filime yakozwe ni ntoya cyane kandi izashonga kabiri, idashobora kugabanya ihinduka ryamazi no kugabanya imbaraga.

2) Filime yakozwe ni ndende cyane, ubunini bwa selile ya selile muri minisiteri yimbere ya minisiteri ni ndende, kandi viscosity ni ndende, ntabwo rero byoroshye kumena firime yo hejuru mugihe amabati yometse.

Birashobora kugaragara ko imiterere ya firime ya selile ya ether igira uruhare runini mugihe cyo gufungura. Ubwoko bwa selulose ether (HPMC, HEMC, MC, nibindi) hamwe nurwego rwa etherification (impamyabumenyi yo gusimbuza) bigira ingaruka itaziguye kumiterere ya firime ya selile ya ether, hamwe nubukomere nubukomezi bwa firime.

Usibye gutanga imitungo yingirakamaro yavuzwe haruguru kuri minisiteri, selulose ether inadindiza hydrated kinetics ya sima. Izi ngaruka zo kudindiza ahanini ziterwa na adsorption ya molekile ya selile ya selile ku byiciro bitandukanye byamabuye y'agaciro muri sisitemu ya sima ihindurwamo amazi, ariko muri rusange, icyumvikanyweho ni uko molekile ya selile yanduzwa cyane cyane kumazi nka CSH na hydroxide ya calcium. Ku bicuruzwa bivura imiti, ntibisanzwe byamamazwa kumurongo wambere wamabuye ya clinker. Byongeye kandi, selile ya selile igabanya umuvuduko wa ion (Ca2 +, SO42-,…) mugisubizo cya pore bitewe no kwiyongera kwijimye ryumuti wa pore, bityo bikadindiza inzira yo kuhira.

Viscosity ni ikindi kintu cyingenzi, kigaragaza imiti iranga selile. Nkuko byavuzwe haruguru, ibishishwa bigira ingaruka cyane cyane kubushobozi bwo gufata amazi kandi bikagira n'ingaruka zikomeye kumikorere ya minisiteri nshya. Nyamara, ubushakashatsi bwakozwe bwerekanye ko ubwiza bwa selile ya selile nta ngaruka bigira kuri sima hydration kinetics. Uburemere bwa molekuline ntacyo bugira kuri hydration, kandi itandukaniro ntarengwa riri hagati yuburemere butandukanye ni 10min gusa. Kubwibyo, uburemere bwa molekile ntabwo aribintu byingenzi bigenzura kugenzura sima.

“Gushyira mu bikorwa Ether ya Cellulose mu bikoresho bya sima byumye-bivanze na Mortar Products” byagaragaje ko kudindira kwa selile biterwa na chimique. Kandi icyerekezo rusange cyanzuye ni uko kuri MHEC, urwego rwo hejuru rwa methylation, niko ingaruka zo kudindiza selile selile. Byongeye kandi, ingaruka mbi zo gusimbuza hydrophilique (nko gusimbuza HEC) irakomeye kuruta iyisimbuza hydrophobique (nko gusimbuza MH, MHEC, MHPC). Ingaruka zo kudindiza selile ya selile yibasiwe cyane nibintu bibiri, ubwoko nubwinshi bwamatsinda asimbuye.

Ubushakashatsi bwa sisitemu bwagaragaje kandi ko ibikubiye mu nsimburangingo bigira uruhare runini mu mbaraga za mashini zifata tile. Kuri HPMC, harasabwa urwego runaka rwo gutanga kugirango amazi yoroherezwe kandi yoroherezwe. Ibiri mubisimbura nabyo bigena imbaraga za HPMC. Ubushyuhe bwa gel nabwo bugena imikoreshereze ya HPMC. Mu ntera runaka, kwiyongera mubiri mumatsinda ya mikorerexyl bizazana inzira yo kumanuka mumbaraga zo gukurura, mugihe kwiyongera mubiri mumatsinda ya hydroxypropoxyl bizatuma kugabanuka kwingufu zo gukuramo. kuzamuka. Hariho ingaruka zisa kumasaha yo gufungura.

Imihindagurikire yimbaraga zumukanishi mugihe cyo gufungura imiterere ihuye nubushyuhe busanzwe. HPMC irimo vitamine nyinshi (DS) hamwe na hydroxypropoxyl (MS) nkeya ifite ubukana bwa firime, ariko bizagira ingaruka kuri minisiteri itose. ibikoresho byo guhanagura ibintu.