Hakozwe ubushakashatsi ku ngaruka ziterwa n’imihindagurikire y’imyunyu ngugu ya hydroxyethyl methylcellulose (HEMC), yaba yarahinduwe cyangwa idahinduwe, hamwe n’ibirimo guhinduka ku musaruro w’umusaruro hamwe n’ubukonje bwa plastike bwa sima nshya. Kuri HEMC idahinduwe, hejuru yubukonje, niko kugabanuka kwumusaruro hamwe nubusembwa bwa plastike ya minisiteri; Ingaruka zo guhinduka kwijimye rya HEMC yahinduwe kumiterere ya rheologiya ya minisiteri iracogora; ntakibazo cyaba cyarahinduwe cyangwa kidahinduwe, uko ubukonje bwa HEMC buri hejuru, niko ingaruka zo kudindiza ingaruka ziterwa numusaruro hamwe niterambere rya viscosity plastike ya minisiteri iragaragara. Iyo ibiri muri HEMC birenze 0.3%, guhangayikishwa numusaruro hamwe nubwiza bwa plastike ya minisiteri byiyongera hamwe no kwiyongera kwibirimo; iyo ibikubiye muri HEMC ari binini, guhangayikishwa n'umusaruro wa minisiteri bigabanuka uko ibihe bigenda bisimburana, kandi intera ya viscosity ya plastike ikiyongera hamwe nigihe.
Amagambo shingiro: hydroxyethyl methylcellulose, mortar nshya, imiterere ya rheologiya, guhangayika umusaruro, ububobere bwa plastike
I. Intangiriro
Hamwe niterambere ryikoranabuhanga ryubaka minisiteri, hitabiriwe cyane no kubaka imashini. Ubwikorezi burebure burebure bushyira imbere ibisabwa bishya bya pompe: amazi meza agomba kubungabungwa mugihe cyose cyo kuvoma. Ibi bigomba kwiga kubintu bigira ingaruka no kugabanya imiterere ya minisiteri, kandi uburyo busanzwe ni ukureba ibipimo bya rheologiya ya minisiteri.
Imiterere ya rheologiya ya minisiteri ahanini ishingiye kumiterere nubunini bwibikoresho fatizo. Cellulose ether ni imvange ikoreshwa cyane muri minisiteri yinganda, igira uruhare runini kumiterere ya rheologiya ya minisiteri, bityo intiti zo murugo ndetse no mumahanga zakoze ubushakashatsi kuri yo. Muri make, imyanzuro ikurikira irashobora gufatwa: kwiyongera k'umubare wa selile ya selile bizatuma habaho kwiyongera k'umuriro wa mbere wa minisiteri, ariko nyuma yigihe cyo gukurura, kurwanya umuvuduko wa minisiteri bizagabanuka aho (1) ; mugihe ibintu byambere byamazi ari bimwe, amazi ya minisiteri azabura mbere. yiyongereye nyuma yo kugabanuka (2); imbaraga zumusaruro hamwe nubusembwa bwa plastike ya minisiteri yerekanaga inzira yo kugabanuka mbere hanyuma ikiyongera, kandi ether ya selile yateje imbere gusenya imiterere ya minisiteri kandi ikomeza igihe kuva kurimbuka kugeza kwiyubaka (3); Ifu ya Ether hamwe niyinshi ifite ifu yuzuye kandi itajegajega nibindi (4). Nyamara, ubushakashatsi bwavuzwe haruguru buracyafite ibitagenda neza:
Ibipimo byo gupima nuburyo bukoreshwa nintiti zitandukanye ntabwo ari kimwe, kandi ibisubizo byikizamini ntibishobora kugereranywa neza; igipimo cyo kugerageza igikoresho ni gito, kandi ibipimo bya rheologiya ya minisiteri yapimwe bifite intera ntoya yo gutandukana, ntabwo ihagarariwe cyane; harabura ibizamini byo kugereranya kuri selile ya selile ifite viscosities zitandukanye; Hariho ibintu byinshi bigira ingaruka, kandi gusubiramo ntabwo ari byiza. Mu myaka yashize, isura ya rheometer ya Viskomat XL yatanze ubworoherane bwo kumenya neza imiterere ya rheologiya ya minisiteri. Ifite ibyiza byo murwego rwohejuru rwigenzura, ubushobozi bunini, intera yagutse, hamwe nibisubizo byinshi bijyanye nibihe bifatika. Muri iyi nyandiko, hashingiwe ku ikoreshwa ryubu bwoko bwibikoresho, ibisubizo byubushakashatsi bwintiti zisanzwe birahuzwa, kandi gahunda yikizamini yateguwe kugirango bige ku ngaruka zubwoko butandukanye nubwiza bwa hydroxyethyl methylcellulose (HEMC) kuri rheologiya ya minisiteri muri ingano nini ya dosiye. Ingaruka.
2. Icyitegererezo cyimiterere ya sima nshya
Kuva rheologiya yinjizwa muri sima na siyansi ifatika, ubushakashatsi bwinshi bwerekanye ko beto nshya na minisiteri bishobora gufatwa nkamazi ya Bingham, Banfill akomeza gusobanura uburyo bushoboka bwo gukoresha urugero rwa Bingham kugirango asobanure imiterere y’imiterere ya minisiteri (5). Mu kugereranya imvugo τ = τ0 + μγ ya moderi ya Bingham, τ ni impagarara zogosha, τ0 ni impungenge z'umusaruro, μ ni ubwiza bwa plastike, na γ ni igipimo cyogosha. Muri byo, τ0 na μ ni byo bintu bibiri by'ingenzi: τ0 ni impagarike ntoya yo gukata ishobora gutuma sima ya sima itemba, kandi iyo τ> τ0 ikora kuri minisiteri, minisiteri irashobora gutemba; μ yerekana kurwanya viscous iyo minisiteri itemba Nini nini μ, gahoro gahoro minisiteri itemba [3]. Mugihe aho τ0 na μ byombi bitazwi, impagarara zogosha zigomba gupimwa byibuze ibipimo bibiri bitandukanye mbere yo kubarwa (6).
Muri rheometer yatanzwe, umurongo wa NT wabonetse mugushiraho igipimo cyizunguruka cya N no gupima torque T iterwa no guhangana na shear ya minisiteri irashobora kandi gukoreshwa mukubara irindi gereranya T = g + rihuye nicyitegererezo cya Bingham Ibipimo byombi g na h ya Nh. g ihwanye ningutu yumusaruro τ0, h ihwanye nubwiza bwa plastike μ, na τ0 = (K / G) g, μ = (l / G) h, aho G ihora ijyanye nigikoresho, kandi K irashobora kunyuzwa mumigezi izwi Byabonetse mugukosora amazi afite imiterere ihinduka hamwe nigipimo cyogosha [7]. Kugirango byorohe, iyi mpapuro ivuga mu buryo butaziguye g na h, kandi ikoresha amategeko ahinduka ya g na h kugirango yerekane amategeko ahinduka yibibazo byumusaruro hamwe nubwiza bwa plastike ya minisiteri.
3. Ikizamini
3.1 Ibikoresho bibisi
3.2 umucanga
Umusenyi wa Quartz: umucanga utubutse ni 20-40 mesh, umucanga wo hagati ni mesh 40-70, umucanga mwiza ni mesh 70-100, naho bitatu bivangwa mukigereranyo cya 2: 2: 1.
3.3 Ether ya selile
Hydroxyethyl methylcellulose HEMC20 (viscosity 20000 mPa s), HEMC25 (viscosity 25000 mPa s), HEMC40 (viscosity 40000 mPa s), na HEMC45 (viscosity 45000 mPa s), muri yo HEMC25 na HEMC45 ni selile yahinduwe.
3.4 Kuvanga amazi
amazi.
3.5 Gahunda y'ibizamini
Ikigereranyo cya lime-umucanga ni 1: 2.5, ikoreshwa ryamazi rishyirwa kuri 60% yikoreshwa rya sima, naho HEMC ni 0-1.2% byokoresha sima.
Banza uvange sima yapimwe neza, HEMC n'umusenyi wa quartz bingana, hanyuma ushyiremo amazi avanze ukurikije GB / T17671-1999 hanyuma ukangure, hanyuma ukoreshe rheometero ya Viskomat XL kugirango ugerageze. Uburyo bwo gukora ikizamini ni: umuvuduko wiyongera byihuse kuva 0 kugeza 80rpm kuri 0 ~ 5min, 60rpm saa 5 ~ 7min, 40rpm saa 7 ~ 9min, 20rpm saa 9 ~ 11min, 10rpm saa 11 ~ 13min, na 5rpm kuri 13 ~ 15min, 15 ~ 30min, umuvuduko ni 0rpm, hanyuma ukizunguruka rimwe buri 30min ukurikije inzira yavuzwe haruguru, kandi igihe cyo gukora ikizamini ni 120min.
4. Ibisubizo n'ibiganiro
4.1 Ingaruka zo guhinduka kwa HEMC kumiterere ya rheologiya ya sima ya sima
. Birashobora kugaragara ko nubwo ubwiza bwa HEMC40 burenze ubwa HEMC20, guhangayikishwa numusaruro hamwe nubwiza bwa plastike bwa minisiteri ivanze na HEMC40 biri munsi yubwa minisiteri ivanze na HEMC20; nubwo ubwiza bwa HEMC45 buri hejuru ya 80% ugereranije na HEMC25, guhangayikishwa numusaruro wa minisiteri biri hasi gato, kandi ububobere bwa plastike buri hagati yiminota 90 habaye kwiyongera. Ni ukubera ko hejuru ya viscosity ya selile ya ether, niko umuvuduko ugabanuka, kandi bigatwara igihe kinini cya minisiteri yateguwe nayo kugirango igere ku bwenge bwa nyuma [8]. Byongeye kandi, muri ako kanya kamwe mu kizamini, ubwinshi bwinshi bwa minisiteri ivanze na HEMC40 bwari munsi y’ubwa minisiteri ivanze na HEMC20, naho iya minisiteri ivanze na HEMC45 yari munsi y’iya minisiteri ivanze na HEMC25, byerekana ko HEMC40 na HEMC45 bazanye ibyuka byinshi byo mu kirere, kandi ibyuka bihumeka muri minisiteri bigira ingaruka "" Umupira ", bigabanya kandi imyuka ya minisiteri.
Nyuma yo kongeramo HEMC40, impungenge zumusaruro wa minisiteri zari zingana nyuma yiminota 60, kandi ububobere bwa plastike bwiyongera; nyuma yo kongeramo HEMC20, guhangayikishwa numusaruro wa minisiteri wageze kuringaniza nyuma yiminota 30, kandi ububobere bwa plastike bwiyongereye. Irerekana ko HEMC40 ifite ingaruka zikomeye zo kudindiza iterambere ryumusaruro wa minisiteri hamwe nubusembwa bwa plastike kurusha HEMC20, kandi bifata igihe kinini kugirango ugere kumaso yanyuma.
Guhangayikishwa n'umusaruro wa minisiteri ivanze na HEMC45 byagabanutse kuva ku minota 0 kugeza ku 120, kandi ububobere bwa plastike bwiyongereye nyuma yiminota 90; mugihe impungenge zumusaruro wa minisiteri ivanze na HEMC25 yiyongereye nyuma yiminota 90, kandi ububobere bwa plastike bwiyongereye nyuma yiminota 60. Irerekana ko HEMC45 ifite ingaruka zikomeye zo kudindiza iterambere ryumusemburo wa minisiteri hamwe nubukonje bwa plastike kuruta HEMC25, kandi igihe gisabwa kugirango ugere kumaso yanyuma nacyo ni kirekire.
4.2 Ingaruka yibirimo HEMC kumasoko yumusaruro wa sima
Mugihe cyikizamini, ibintu bigira ingaruka kumyuka yumusemburo wa minisiteri ni: gusiba minisiteri no kuva amaraso, kwangirika kwimiterere mukubyutsa, gukora ibicuruzwa biva mumazi, kugabanya ubuhehere bwubusa muri minisiteri, hamwe ningaruka mbi ya selile ya ether. Ku ngaruka zo kudindiza selulose ether, abantu benshi bemera ni ugusobanura na adsorption yimvange.
Birashobora kugaragara ko iyo HEMC40 yongeyeho kandi ibiyirimo biri munsi ya 0.3%, impungenge zumusaruro wa minisiteri zigabanuka buhoro buhoro hamwe no kwiyongera kwa HEMC40; iyo ibiri muri HEMC40 birenze 0.3%, imbaraga za minisiteri ziyongera buhoro buhoro. Bitewe no kuva amaraso no gusibanganya minisiteri idafite selile ya selile, nta paste ihagije ihari hagati ya agregate kugirango isige amavuta, bigatuma kwiyongera k'umusaruro hamwe ningorane zo gutemba. Kwiyongera neza kwa selulose ether birashobora kunoza neza ibintu bya minisiteri yo gusiba, kandi ibyuka bihumeka byinjijwe bihwanye n '“imipira” ntoya, ishobora kugabanya umusaruro wumusaruro wa minisiteri kandi byoroshye gutemba. Mugihe ibirimo selile ya selile yiyongera, ibiyigize byuzuye nabyo byiyongera buhoro buhoro. Iyo ibikubiye muri selile ya selile irenze agaciro runaka, ingaruka zo kugabanuka kwubushuhe bwubusa zitangira kugira uruhare runini, kandi guhangayikishwa numusaruro wa minisiteri byiyongera buhoro buhoro.
Iyo ingano ya HEMC40 iri munsi ya 0.3%, guhangayikishwa numusaruro wa minisiteri bigabanuka gahoro gahoro hagati ya 0-120min, ibyo bikaba ahanini bifitanye isano no gusibanganya uburemere bwa minisiteri, kuko hariho intera runaka hagati yicyuma no hepfo yacyo. igikoresho, hamwe na hamwe nyuma yo gusibanganya kurohama hasi, kurwanya hejuru biba bito; mugihe ibirimo HEMC40 ari 0.3%, minisiteri ntishobora gusenyuka, adsorption ya selulose ether iba mike, hydration iriganje, kandi guhangayikishwa numusaruro bifite kwiyongera runaka; ibirimo HEMC40 ni Iyo ibikubiye muri selile ya selile ari 0.5% -0.7%, adsorption ya selile ya selile yiyongera buhoro buhoro, igipimo cyamazi kigabanuka, kandi iterambere ryiterambere ryumusaruro wa minisiteri utangira guhinduka; Ku buso, igipimo cya hydration kiri hasi kandi guhangayikishwa numusaruro wa minisiteri bigabanuka mugihe.
4.3 Ingaruka yibirimo bya HEMC kumashanyarazi ya plastike ya sima
Birashobora kugaragara ko nyuma yo kongeramo HEMC40, ububobere bwa plastike ya minisiteri bwiyongera buhoro buhoro hamwe no kwiyongera kwa HEMC40. Ni ukubera ko selile ya selile ifite ingaruka zo kubyimba, ishobora kongera ubwiza bwamazi, kandi uko dosiye ikabije, niko ubwiza bwa minisiteri. Impamvu ituma ububobere bwa plastike bwa minisiteri bugabanuka nyuma yo kongeramo 0.1% HEMC40 nabwo biterwa ningaruka ya "ball" yo kwinjiza umwuka mubi, no kugabanya kuva amaraso no gusibanganya minisiteri.
Ububiko bwa plastike bwa minisiteri isanzwe utiriwe wongera selile ya selile igenda igabanuka buhoro buhoro hamwe nigihe, ibyo bikaba bifitanye isano nubucucike bwo hasi bwigice cyo hejuru cyatewe no guterwa na minisiteri; iyo ibikubiye muri HEMC40 ari 0.1% -0.5%, imiterere ya minisiteri irasa, naho imiterere ya minisiteri irasa nyuma yiminota 30. Ububiko bwa plastike ntabwo buhinduka cyane. Muri iki gihe, byerekana cyane cyane ingaruka za viscosity ya selile ether ubwayo; nyuma yibiri muri HEMC40 birenze 0.7%, ubwiza bwa plastike bwa minisiteri bwiyongera buhoro buhoro hamwe nigihe cyiyongera, kuko ubwiza bwa minisiteri nabwo bufitanye isano na selile ya ether. Ubukonje bwumuti wa selulose ether bwiyongera buhoro buhoro mugihe runaka nyuma yo gutangira kuvanga. Ninini cyane, ningaruka zingirakamaro zo kwiyongera hamwe nigihe.
V. Umwanzuro
Ibintu nkibihinduka bya viscosity ya HEMC, yaba yarahinduwe cyangwa idahinduwe, hamwe nihinduka rya dosiye bizagira ingaruka cyane kumiterere ya rheologiya ya minisiteri, ishobora kugaragazwa nibintu bibiri byerekana guhangayikishwa numusaruro hamwe nubusembwa bwa plastike.
Kuri HEMC idahinduwe, nini cyane, niko igabanuka ryumusaruro hamwe nubusembwa bwa plastike ya minisiteri muri 0-120min; Ingaruka zo guhinduka kwijimye rya HEMC yahinduwe kumiterere ya rheologiya ya minisiteri irakomeye kuruta iya HEMC idahinduwe; ntakibazo cyahinduwe Cyaba gihoraho cyangwa kidahoraho, uko ubwiza bwa HEMC burushaho kuba bwiza, ningaruka zikomeye zo gutinda kumikurire yumusaruro wa minisiteri hamwe nubwiza bwa plastike.
Iyo wongeyeho HEMC40 hamwe na viscosity ya 40000mPa · s kandi ibiyirimo birenze 0.3%, guhangayikishwa numusaruro wa minisiteri byiyongera buhoro buhoro; iyo ibirimo birenze 0.9%, guhangayikishwa numusaruro wa minisiteri bitangira kwerekana inzira yo kugabanuka buhoro buhoro hamwe nigihe; Ububiko bwa plastike bwiyongera hamwe no kwiyongera kwa HEMC40. Iyo ibirimo birenze 0.7%, ubwiza bwa plastike ya minisiteri itangira kwerekana inzira yo kwiyongera buhoro buhoro hamwe nigihe.
Igihe cyo kohereza: Ugushyingo-24-2022