Ingaruka yubushyuhe bwibidukikije kumikorere ya selileose ether yahinduwe gypsum

Imikorere ya selileose ether yahinduwe gypsum mubushyuhe butandukanye bwibidukikije iratandukanye cyane, ariko uburyo bwayo ntibusobanutse. Hakozwe ubushakashatsi ku ngaruka za selulose ether ku bipimo bya rheologiya no kugumana amazi ya gypsum slurry ku bushyuhe butandukanye bw’ibidukikije. Diameter ya hydrodynamic ya selulose ether mugice cyamazi yapimwe nuburyo bwo gukwirakwiza urumuri rwinshi, kandi hashyizweho uburyo bwo kugira ingaruka. Ibisubizo byerekana ko selile ether ifite selile nziza yo kugumana amazi no kubyimba kuri gypsumu. Hamwe no kwiyongera kwa selile ya etherulose, ubwiza bwibisebe bwiyongera kandi ubushobozi bwo kugumana amazi bwiyongera. Ariko, hamwe no kwiyongera kwubushyuhe, amazi agumana ubushobozi bwa gypsum yahinduwe igabanuka kurwego runaka, kandi ibipimo bya rheologiya nabyo birahinduka. Urebye ko ishyirahamwe rya selile ether colloid rishobora kugera ku gufata amazi mu guhagarika umuyoboro w’amazi, izamuka ry’ubushyuhe rishobora gutuma isenyuka ry’ishyirahamwe rinini ryakozwe na selile ya ether, bityo bikagabanya gufata amazi n’imikorere ya gypsumu yahinduwe.

Amagambo y'ingenzi:gypsumu; Cellulose ether; Ubushyuhe; Kubika amazi; rheologiya

0. Intangiriro

Gypsumu, nkubwoko bwibidukikije byangiza ibidukikije hamwe nubwubatsi bwiza nibintu bifatika, bikoreshwa cyane mumishinga yo gushushanya. Mugukoresha ibikoresho bishingiye kuri gypsumu, mubisanzwe ibikoresho bigumana amazi byongerwaho kugirango bihindure ibishishwa kugirango birinde gutakaza amazi mugihe cyo kuvomera no gukomera. Cellulose ether nikintu gikunze kugumana amazi muri iki gihe. Kuberako ionic CE izitwara hamwe na Ca2 +, akenshi ikoresha itari ionic CE, nka: hydroxypropyl methyl selulose ether, hydroxyethyl methyl selulose ether na methyl selulose ether. Ni ngombwa kwiga imiterere ya selulose ether yahinduwe gypsumu kugirango ikoreshwe neza gypsumu mubuhanga bwo gushushanya.

Cellulose ether ni molekile ndende ikorwa nigisubizo cya alkali selulose hamwe na etherifying agent mubihe bimwe. Ether ya nonionic selulose ether ikoreshwa mubwubatsi bwubwubatsi ifite gutatanya neza, kubika amazi, guhuza no kubyibuha. Kwiyongera kwa selile ya selile bigira ingaruka zigaragara cyane kubigumana byamazi ya gypsumu, ariko imbaraga zo kugonda no kwikomeretsa kumubiri wa gypsum ukomantaye nazo zigabanukaho gato hamwe no kwiyongera kwinshi. Ni ukubera ko selile ether ifite selile runaka yo kwinjiza umwuka, izana ibibyimba mugihe cyo kuvanga ibishishwa, bityo bikagabanya imiterere yubukorikori bwumubiri ukomeye. Mugihe kimwe, ether nyinshi ya selile irashobora gutuma gypsumu ivanga cyane, bikavamo imikorere yubwubatsi.

Uburyo bwa hydrata ya gypsumu bushobora kugabanywamo intambwe enye: gusesa calcium sulfate hemihydrate, nucleation ya kristalisation ya calcium sulfate dihydrate, gukura kwa nucleus nucleus no gushiraho imiterere ya kristaline. Muri hydration ya gypsumu, itsinda rya hydrophilique imikorere ya selulose ether adsorbing hejuru yubutaka bwa gypsumu bizakosora igice cya molekile zamazi, bityo bidindiza inzira ya nucleation ya hydrasiyo kandi byongerera igihe cyagenwe cya gypsumu. Binyuze mu bushakashatsi bwa SEM, Mroz yasanze nubwo kuba hari selile ya selile yatinze gukura kwa kristu, ariko byongera guhuzagurika no kwegeranya kristu.

Ether ya selile irimo amatsinda ya hydrophilique kuburyo ifite hydrophilicite runaka, polymer ndende yumunyururu uhuza hamwe kugirango igire ubukonje bwinshi, imikoranire yombi ituma selile igira ingaruka nziza yo kugumana umubyimba wa gypsumu. Bulichen yasobanuye uburyo bwo gufata amazi ya selulose ether muri sima. Mugihe cyo kuvanga gake, selulose ether adsorb kuri sima kugirango amazi yinjizwemo kandi aherekejwe no kubyimba kugirango amazi agumane. Muri iki gihe, gufata amazi ni bibi. Umubare munini, selile ya ether izakora nanometero amagana kuri microne nkeya ya colloidal polymer, ihagarike neza sisitemu ya gel mu mwobo, kugirango amazi agumane neza. Uburyo bwibikorwa bya selile ya ether muri gypsumu ni nkibya sima, ariko SO42- yibanda cyane mugice cyamazi ya gypsum slurry bizaca intege ingaruka zo kubika amazi ya selile.

Ukurikije ibimaze kuvugwa haruguru, urashobora gusanga ubushakashatsi burimo gukorwa kuri selireose ether yahinduwe gypsumu ahanini yibanda kumikorere ya hydrata ya selile ya ether kuri mixe ya gypsum, imiterere yo gufata amazi, imiterere yubukanishi na microstructure yumubiri ukomye, hamwe nuburyo bwa selile ya ether. kubika amazi. Nyamara, ubushakashatsi ku mikoranire hagati ya selile ether na gypsum slurry ku bushyuhe bwo hejuru ntiburahagije. Cellulose ether amazi yo mumazi azahindura gelatine mubushyuhe bwihariye. Mugihe ubushyuhe bwiyongera, ubwiza bwa selile ya ether amazi yo mumazi bizagabanuka buhoro buhoro. Iyo ubushyuhe bwa gelatinizasiyo bugeze, selile ya ether izagwa muri gel yera. Kurugero, mubwubatsi bwimpeshyi, ubushyuhe bwibidukikije buri hejuru, imiterere ya gel yumuriro wa selulose ether igomba kuganisha kumahinduka mumikorere ya gypsum yahinduwe. Aka kazi kerekana ingaruka ziterwa nubushyuhe ku mikorere ya selile ya ether yahinduwe gypsum ikoresheje ubushakashatsi butunganijwe, ikanatanga ubuyobozi bwogukoresha muburyo bwa selile ya selile yahinduwe.

1. Ubushakashatsi

1.1 Ibikoresho bito

Gypsum ni β ubwoko bwa nyubako karemano yatanzwe na Beijing Ecological Home Group.

Ether ya selile yatoranijwe muri Shandong Yiteng Group hydroxypropyl methyl selulose ether, ibisobanuro byibicuruzwa kuri 75.000 mPa · s, 100.000 mPa · s na 200000mPa · s, ubushyuhe bwa gelation hejuru ya 60 ℃. Acide Citric yatoranijwe nka gypsum retarder.

1.2 Ikizamini cya Rheologiya

Igikoresho cyo gupima rheologiya yakoreshejwe ni rheometer ya RST⁃CC yakozwe na BROOKFIELD USA. Ibipimo bya rheologiya nka viscosity ya plastike hamwe numusemburo wumusemburo wa gypsum slurry byagenwe na MBT⁃40F⁃0046 icyitegererezo hamwe na rot ya CC3⁃40, kandi amakuru yatunganijwe na software ya RHE3000.

Ibiranga kuvanga gypsumu bihuye nimyitwarire ya rheologiya yamazi ya Bingham, ubusanzwe yizwe hakoreshejwe urugero rwa Bingham. Nyamara, kubera pseudoplastique ya selile ya ether yongewe kuri polymer-yahinduwe gypsumu, imvange ya slurry ikunze kwerekana ibintu bimwe na bimwe byogosha. Muri iki kibazo, moderi ya Bingham (M⁃B) yahinduwe irashobora gusobanura neza umurongo wa rheologiya ya gypsumu. Kugirango wige ihindagurika rya gypsumu, iki gikorwa kirakoresha kandi icyitegererezo cya Herschel⁃Bulkley (H⁃B).

1.3 Ikizamini cyo gufata amazi

Uburyo bwikizamini bwerekeza kuri GB / T28627⁃2012 Amashanyarazi. Mugihe cyubushakashatsi hamwe nubushyuhe nkibihinduka, gypsumu yashyutswe 1h mbere yubushyuhe bujyanye nitanura, kandi amazi avanze yakoreshejwe mubushakashatsi yashyutswe 1h mubushyuhe bukwiranye nubushyuhe bwogeye bwamazi, hamwe nigikoresho cyakoreshejwe yarashyutswe.

1.4 Ikizamini cya diameter ya Hydrodinamike

Diameter ya hydrodynamic (D50) ya HPMC polymer ishyirahamwe mugice cyamazi yapimwe hifashishijwe isesengura ryingufu zogukwirakwiza ingero zingana (Malvern Zetasizer NanoZS90).

2. Ibisubizo n'ibiganiro

2.1 Imiterere yimiterere ya HPMC yahinduwe gypsumu

Ikigaragara kigaragara ni igipimo cyimyitwarire yimisatsi nigipimo cyogukora gikora kumazi kandi nikintu kiranga urujya n'uruza rw'amazi atari Newtonian. Ubukonje bugaragara bwa gypsum yahinduwe bwahinduwe hamwe nibiri muri selile ya selile munsi yuburyo butatu (75000mPa · s, 100,000mpa · s na 200000mPa · s). Ubushyuhe bwikizamini bwari 20 ℃. Iyo igipimo cyo gukata cya rheometero ari 14min-1, urashobora gusanga ubwiza bwa gypsum slurry bwiyongera hamwe no kwiyongera kwa HPMC, kandi uko ubukonje bwa HPMC buri hejuru, niko ubwinshi bwubwiza bwa gypsum yahinduwe buzaba. Ibi byerekana ko HPMC ifite umubyimba ugaragara hamwe na viscosification ingaruka kuri gypsum slurry. Gypsum slurry na selulose ether nibintu bifite ububobere runaka. Mu kuvanga gypsumu yahinduwe, selulose ether yamamajwe hejuru yibicuruzwa biva mu mazi ya gypsumu, kandi umuyoboro wakozwe na selile ether hamwe numuyoboro wakozwe na gypsumu bivanze, bikavamo "superpression effect", bikazamura cyane ubwiza rusange muri rusange. ibikoresho byahinduwe bya gypsumu.

Shear ⁃ guhangayikisha umurongo wa gypsumu yuzuye (G⁃H) hamwe na gypsumu (G⁃H) yahinduwe hamwe na 75000mPa · s-HPMC, nkuko byavuzwe muburyo bwa Bingham (M⁃B) bwavuguruwe. Birashobora kuboneka ko hamwe no kwiyongera kwikigero cyogosha, guhangayikishwa nuruvange nabyo byiyongera. Ububiko bwa plastike (ηp) hamwe no gutanga umusaruro wogosha (τ0) indangagaciro za gypsumu nziza na HPMC yahinduwe gypsumu mubushyuhe butandukanye iraboneka.

Uhereye kuri plasitike ya plastike (ηp) hamwe no gutanga umusaruro wogosha (τ0) agaciro ka gypsumu nziza na HPMC yahinduwe gypsumu mubushyuhe butandukanye, birashobora kugaragara ko guhangayikishwa numusaruro wa HPMC yahinduwe gypsumu bizagabanuka ubudahwema no kwiyongera kwubushyuhe, numusaruro guhangayika bizagabanuka 33% kuri 60 ℃ ugereranije na 20 ℃. Iyo witegereje umurongo wa plastike wijimye, urashobora gusanga ubwiza bwa plastike bwa gypsum yahinduwe nayo igabanuka hamwe no kwiyongera kwubushyuhe. Nyamara, guhangayikishwa numusaruro hamwe nubusembwa bwa plastike ya gypsumu yuzuye yiyongera gato hamwe no kwiyongera kwubushyuhe, ibyo bikaba byerekana ko ihinduka ryimiterere ya rheologiya ya HPMC yahinduwe na gypsum mugihe cyo kwiyongera kwubushyuhe iterwa no guhindura imitungo ya HPMC.

Umusaruro uhangayikishijwe na gypsum slurry yerekana agaciro ntarengwa kogosha mugihe iyo slurry irwanya guhindagurika. Nibyinshi byumusaruro uhangayikishije, niko gypsum ihagaze neza. Ububiko bwa plastike bugaragaza igipimo cyo guhindura gypsum slurry. Ninini nini ya plastike ni nini, igihe cyo guhindagura igihe cyo gutemba kizaba kinini. Mu gusoza, ibipimo bibiri byerekana imiterere ya HPMC byahinduwe na gypsum slurry bigabanuka bigaragara ko hamwe nubushyuhe bwiyongereye, kandi ingaruka zo kwiyongera kwa HPMC kuri gypsum ziracika intege.

Ihindurwa ryogosha ryibishishwa bivuga kogosha kwogosha cyangwa kugabanuka kwogosha kugaragazwa nigituba iyo gikorewe imbaraga. Ingaruka yimyenda yo gutemagura irashobora kugenzurwa nigipimo cya pseudoplastique n cyabonetse kumurongo ukwiye. Iyo n <1, gypsum slurry yerekana kogosha, kandi urugero rwogosha rwa gypsum slurry iba myinshi hamwe no kugabanuka kwa n. Iyo n> 1, gypsum slurry yerekanaga umubyimba wogosha, kandi urugero rwogosha rwa gypsum slurry rwiyongereye hamwe no kwiyongera kwa n. Imirongo ya rheologiya ya HPMC yahinduye gypsum slurry ku bushyuhe butandukanye bushingiye ku cyitegererezo cya Herschel⁃Bulkley (H⁃B), bityo ubone indangagaciro ya pseudoplastique n ya HPMC yahinduwe gypsum.

Ukurikije indangagaciro ya pseudoplastique n ya HPMC yahinduwe na gypsum slurry, ihindagurika ryimyenda ya gypsum ivanze na HPMC iragabanuka, kandi n agaciro kiyongera buhoro buhoro hamwe no kwiyongera kwubushyuhe, ibyo bikaba byerekana ko imyitwarire yo kunanura imisatsi ya HPMC yahinduwe gypsumu izakora gucika intege kurwego runaka mugihe byatewe nubushyuhe.

Ukurikije impinduka zigaragara zijimye zahinduwe na gypsum slurry hamwe nigipimo cyogosha kibarwa uhereye kumibare yimpanuka ya 75000 mPa · HPMC mubushyuhe butandukanye, urashobora gusanga ububobere bwa plastike bwibintu byahinduwe na gypsumu bugabanuka vuba hamwe no kwiyongera kwikigero cyogosha, igenzura ibisubizo bikwiye bya moderi ya H⁃B. Guhindura gypsum slurry yerekanaga kogosha ibiranga. Hamwe n'ubwiyongere bw'ubushyuhe, ubwiza bugaragara bw'uruvange buragabanuka ku rugero runaka ku gipimo gito cyo kogosha, ibyo bikaba byerekana ko ingaruka zogosha za gypsum zahinduwe zacitse intege.

Mu mikoreshereze nyayo ya gypsum putty, gypsum slurry irasabwa kuba byoroshye guhinduka muburyo bwo guswera no gukomeza guhagarara neza kuruhuka, bisaba gypsum kugira kugira ibimenyetso byiza byogosha, kandi ihinduka ryogosha rya gypsumu ya HPMC ntisanzwe kuri urugero runaka, rudafasha kubaka ibikoresho bya gypsumu. Ubukonje bwa HPMC nimwe mubintu byingenzi, kandi nimpamvu nyamukuru ituma igira uruhare mubyimbye kugirango itezimbere ibintu biranga kuvanga imigezi. Cellulose ether ubwayo ifite imiterere ya gel ishyushye, ubwiza bwumuti wamazi ugabanuka buhoro buhoro uko ubushyuhe bwiyongera, kandi gel yera igwa iyo igeze kubushyuhe bwa gelation. Guhindura ibipimo bya rheologiya ya selulose ether yahinduwe gypsumu hamwe nubushyuhe bifitanye isano rya bugufi nihinduka ryijimye, kuko ingaruka zo kubyimba nigisubizo cyo hejuru ya selile ya ether na selile ivanze. Mu buhanga bufatika, ingaruka zubushyuhe bwibidukikije ku mikorere ya HPMC zigomba gutekerezwa. Kurugero, ubushyuhe bwibikoresho fatizo bigomba kugenzurwa nubushyuhe bwinshi mu cyi kugirango wirinde imikorere mibi ya gypsumu yahinduwe iterwa nubushyuhe bwinshi.

2.2 Kubika amaziHPMC yahinduye gypsumu

Kugumana amazi ya gypsum slurry yahinduwe hamwe nibintu bitatu bitandukanye bya selile ether ihindurwa hamwe na dosage curve. Hamwe no kwiyongera kwa dosiye ya HPMC, igipimo cyo gufata amazi ya gypsum slurry cyateye imbere cyane, kandi kwiyongera bigenda bihinduka mugihe dosiye ya HPMC igeze 0.3%. Hanyuma, igipimo cyo gufata amazi ya gypsum slurry kirahagaze kuri 90% ~ 95%. Ibi byerekana ko HPMC ifite ingaruka zigaragara zo kubika amazi kuri paste yamabuye, ariko ingaruka zo kubika amazi ntabwo zateye imbere cyane kuko dosiye ikomeza kwiyongera. Ibintu bitatu byihariye byerekana igipimo cyo gufata amazi ya HPMC ntabwo ari kinini, kurugero, iyo ibirimo ari 0.3%, igipimo cyo gufata amazi ni 5%, gutandukana bisanzwe ni 2.2. HPMC ifite ubukonje bwinshi ntabwo ari igipimo kinini cyo gufata amazi, kandi HPMC ifite ubukonje buke ntabwo ari igipimo cyo gufata amazi make. Nyamara, ugereranije na gypsumu isukuye, igipimo cyo gufata amazi ya HPMC eshatu kuri gypsum cyatejwe imbere cyane, kandi igipimo cyo gufata amazi ya gypsumu yahinduwe mubirimo 0.3% cyiyongereyeho 95%, 106%, 97% ugereranije nu itsinda rishinzwe kugenzura ubusa. Ether ya selile irashobora kugaragara neza kunoza amazi ya gypsum slurry. Hamwe no kwiyongera kwa HPMC, igipimo cyo gufata amazi ya HPMC cyahinduwe gypsum slurry hamwe nubwiza butandukanye bigenda bigera aho byuzura. 10000mPa · sHPMC yageze aho yuzura kuri 0.3%, 75000mPa · s na 20000mPa · s HPMC yageze kuri 0.2%. Ibisubizo byerekana ko kubika amazi ya 75000mPa · s HPMC yahinduye gypsumu ihindagurika hamwe nubushyuhe munsi ya dosiye zitandukanye. Kugabanuka kwubushyuhe, igipimo cyo gufata amazi ya gypsumu ya HPMC yahinduwe gahoro gahoro, mugihe igipimo cyo gufata amazi ya gypsumu yera ahanini kidahinduka, byerekana ko kwiyongera kwubushyuhe bigabanya ingaruka zo gufata amazi ya HPMC kuri gypsumu. Igipimo cyo gufata amazi ya HPMC cyaragabanutseho 31.5% mugihe ubushyuhe bwazamutse buva kuri 20 ℃ bugera kuri 40 ℃. Iyo ubushyuhe buzamutse buva kuri 40 ℃ bukagera kuri 60 ℃, igipimo cyo gufata amazi ya gypsumu ya HPMC cyahinduwe ahanini ni kimwe na gypsumu yera, byerekana ko HPMC yatakaje ingaruka zo kunoza amazi ya gypsumu muri iki gihe. Jian Jian na Wang Peiming basabye ko ether ya selulose ubwayo ifite ibintu bya gel yumuriro, ihindagurika ryubushyuhe rizatuma habaho impinduka zijimye, morphologie na adsorption ya selile ya ether, byanze bikunze bizana impinduka mubikorwa byo kuvanga ibishishwa. Bulichen yasanze kandi imbaraga za viscosity za sima zirimo HPMC zagabanutse hamwe nubushyuhe bwiyongera.

Guhindura kubika amazi kuvanze bivanze no kwiyongera kwubushyuhe bigomba guhuzwa nuburyo bwa selile ya ether. Bulichen yasobanuye uburyo selile ya selile ishobora kugumana amazi muri sima. Muri sisitemu ishingiye kuri sima, HPMC itezimbere igipimo cyo gufata amazi ya slurry igabanya ubworoherane bwa "cake cake" yakozwe na sisitemu ya sima. Ubwinshi bwa HPMC mugice cyamazi bizakora nanometero magana kuri microne nkeya yishyirahamwe rya colloidal, ibi bifite ingano yimiterere ya polymer irashobora gucomeka neza umuyoboro woguhuza amazi muruvange, bikagabanya ubworoherane bwa "cake cake", kugera ku gufata neza amazi. Bulichen yerekanye kandi ko HPMCS muri gypsumu yerekana uburyo bumwe. Kubwibyo, ubushakashatsi bwa diameter ya hydromechanical ya association yashinzwe na HPMC mugice cyamazi irashobora gusobanura ingaruka za HPMC mukubika amazi ya gypsumu.

2.3 Hydrodynamic diameter ya HPMC ishyirahamwe

Gukwirakwiza ibice byimirongo itandukanye ya 75000mPa · s HPMC mugice cyamazi, hamwe no gukwirakwiza ibice bitatu byerekana HPMC mugice cyamazi kuri 0,6%. Irashobora kugaragara uhereye kugabanwa kugabanywa kwa HPMC kubintu bitatu bisobanutse mugice cyamazi mugihe intumbero ari 0,6% ko, hamwe no kwiyongera kwa HPMC, ubunini bwibice bigize ibice bifitanye isano byakozwe mugice cyamazi nabyo byiyongera. Iyo kwibumbira hamwe ari bike, ibice byakozwe na HPMC byegeranijwe ni bito, kandi agace gato gusa ka HPMC kegeranya mubice nka 100nm. Iyo HPMC yibanda kuri 1%, hariho umubare munini wamashyirahamwe ya colloidal hamwe na hydrodynamic diameter ya 300nm, nikimenyetso cyingenzi cyo guhuzagurika. Iyi "nini nini" polymerisation irashobora guhagarika neza umuyoboro wogutanga amazi muruvange, kugabanya "permeability ya cake", kandi kugumana amazi ajyanye no kuvanga gypsumu kuriyi concentration nayo irenga 90%. Diameter ya hydromechanical ya HPMC ifite viscositike zitandukanye mugice cyamazi ahanini ni imwe, isobanura igipimo gisa nogufata amazi ya HPMC yahinduwe gypsum slurry hamwe nubwiza butandukanye.

Ingano nini yo gukwirakwiza imirongo ya 75000mPa · s HPMC hamwe na 1% yibanze kubushyuhe butandukanye. Hamwe n'ubwiyongere bw'ubushyuhe, kubora kw'ishyirahamwe HPMC rishobora kuboneka. Kuri 40 ℃, ingano nini ya 300nm ishyirahamwe yazimye burundu kandi ibora mo uduce duto twa 15nm. Hamwe no kongera ubushyuhe, HPMC ihinduka uduce duto, kandi kugumana amazi ya gypsum yatakaye rwose.

Ikintu cyimiterere ya HPMC gihinduka hamwe no kuzamuka kwubushyuhe bizwi kandi nka gel gel ishyushye, igitekerezo gisanzwe ni uko ku bushyuhe buke, macromolecules ya HPMC yabanje gukwirakwizwa mu mazi kugira ngo ikemure igisubizo, molekile ya HPMC yibanze cyane izakora ishyirahamwe rinini cyane. . Iyo ubushyuhe buzamutse, hydration ya HPMC igabanuka, amazi hagati yumunyururu asohoka buhoro buhoro, ibice binini byishyirahamwe bigenda bikwirakwira buhoro buhoro uduce duto, ubwiza bwumuti buragabanuka, kandi imiterere yibice bitatu bigize imiterere iyo gelation ubushyuhe buragerwaho, na gel yera iragwa.

Bodvik yasanze microstructure hamwe na adsorption ya HPMC mugice cyamazi yahinduwe. Hamwe n’igitekerezo cya Bulichen cy’ishyirahamwe rya HPMC rihagarika imiyoboro itwara amazi atemba, hanzuwe ko kwiyongera kwubushyuhe byatumye ishyirahamwe HPMC ryangirika, bituma igabanuka ry’amazi rya gypsumu yahinduwe.

3. Umwanzuro

. Ku bushyuhe bwicyumba, ingaruka zo kubyimba zigaragara cyane hamwe no kwiyongera kwijimye hamwe na dosiye ya selile ya ether. Nyamara, hamwe no kwiyongera kwubushyuhe, ubukonje bwa selile ya selile iragabanuka, ingaruka zayo zo kubyimba zigabanuka, guhangayika kwumusaruro hamwe nubwiza bwa plastike bwivanga rya gypsumu bigabanuka, pseudoplastique igabanuka, kandi umutungo wubwubatsi ukaba mubi.

. Igipimo cyo gufata amazi ya gypsum slurry cyarushijeho kunozwa cyane na ether ya selile, kandi igipimo cyo gufata amazi ya HPMC cyahinduwe gypsum slurry hamwe nubukonje butandukanye buhoro buhoro kigera aho cyuzura hamwe no kwiyongera kwa dosiye. Kugumana amazi ya gypsumu muri rusange bigereranywa nubwiza bwa selile ya ether, kuri viscosity nyinshi ntigira ingaruka nke.

. Mugihe runaka, selulose ether ikunda guterana kugirango ibe amashyirahamwe manini ya colloidal, ibuza umuyoboro wogutwara amazi wivanga rya gypsumu kugirango amazi agabanuke. Nyamara, hamwe no kwiyongera kwubushyuhe, bitewe nubushyuhe bwumuriro wa selulose ether ubwayo, ishyirahamwe rinini rya colloid ryashizweho mbere risubiramo, bigatuma imikorere yo gufata amazi igabanuka.