1 Intangiriro
Amashanyarazi ashingiye kuri sima kuri ubu ni yo manini akoreshwa cyane ya minisiteri idasanzwe yumye ivanze, igizwe na sima nkibikoresho nyamukuru bya sima kandi byuzuzwa nudusanduku twinshi, ibikoresho bigumana amazi, imbaraga za kare, ifu ya latex nibindi byongeweho kama kama. imvange. Mubisanzwe, bigomba gusa kuvangwa namazi iyo bikoreshejwe. Ugereranije na sima isanzwe ya sima, irashobora kunoza cyane imbaraga zihuza hagati yibintu byerekanwa na substrate, kandi ikagira imbaraga zo kunyerera kandi ikarwanya amazi meza n’amazi. Ikoreshwa cyane cyane mugushiraho ibikoresho byo gushushanya nko kubaka amatafari yimbere yimbere ninyuma, amabati hasi, nibindi bikoreshwa cyane murukuta rwimbere ninyuma, hasi, ubwiherero, igikoni nahandi hantu ho gushariza. Kugeza ubu ni ibikoresho bikoreshwa cyane muri Tile.
Mubisanzwe iyo dusuzumye imikorere yifata ya tile, ntitwita gusa kubikorwa byayo nubushobozi bwo kurwanya kunyerera, ahubwo tunitondera imbaraga za mashini nigihe cyo gufungura. Ether ya selile mu gufatira tile ntabwo igira ingaruka gusa kumiterere ya rheologiya yumuti wa farashi, nko gukora neza, icyuma gifata, nibindi, ariko kandi igira ingaruka zikomeye kumiterere yubukorikori bwa tile.
2. Ingaruka ku gihe cyo gufungura amatafari
Iyo ifu ya reberi na selile ether bibana hamwe na minisiteri itose, amakuru amwe yerekana ko ifu ya reberi ifite imbaraga za kinetic zo guhuza ibicuruzwa biva mu mazi ya sima, kandi ether ya selile ibaho cyane mumazi yo hagati, bigira ingaruka kumyororokere ya Mortar no kugena igihe. Ubusumbane bwubuso bwa selile ya selile burenze ubw'ifu ya reberi, kandi gutunganyiriza ether ya selile nyinshi kuri interineti ya minisiteri bizagira akamaro mu gushiraho 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, firime ya firime ya selulose 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.
3. Ingaruka ku mbaraga zo gushushanya
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 kubera kwiyongera kwinshi kwumuti 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.
Kugabanuka kwa ether ya selile biterwa nuburyo bwimiti yabyo, kandi icyerekezo rusange cyanzuye ko, kuri MHEC, urwego rwo hejuru rwa methylation, ningaruka mbi ya selile ya ether. 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 bwacu butunganijwe kandi bwagaragaje ko ibikubiye mu nsimburangingo bigira uruhare runini mu mbaraga za mashini zifata tile. Twasuzumye imikorere ya HPMC hamwe ninzego zitandukanye zo gusimbuza amatafari, kandi twagerageje ingaruka za ethers ya selile irimo amatsinda atandukanye mubihe bitandukanye byo gukiza ku ngaruka kumiterere yubukanishi bwa tile.
Mu kizamini, dusuzuma HPMC, ni ether ikomatanya, tugomba rero gushyira hamwe amashusho yombi. Kuri HPMC, ikenera urwego runaka rwo kwinjizwa kugirango irebe amazi yayo kandi yoroherezwe. Twese tuzi ibiri mubisimburana Igena kandi ubushyuhe bwa gel ya HPMC, nayo igena imikoreshereze ya HPMC. Muri ubu buryo, itsinda ryibigize HPMC risanzwe rikoreshwa naryo ryateguwe murwego. Muri uru rwego, uburyo bwo guhuza imikorere na hydroxypropoxy Kugirango tugere ku ngaruka nziza nibiri mubushakashatsi bwacu. Igishushanyo cya 2 cyerekana ko murwego runaka, kwiyongera mubiri mumatsinda ya mikorerexyl bizatuma habaho kugabanuka kumbaraga zo gukuramo, mugihe kwiyongera mubiri mumatsinda ya hydroxypropoxyl bizatuma kwiyongera kwingufu zo gukuramo . 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.
Igihe cyo kohereza: Mutarama-09-2023