Cellulose Ether Viscosity Beddelka Malaasada Sibidhka ku salaysan

Dhumucdiisuna waa wax ka beddelka muhiimka ah ee ether cellulose ee alaabta cement-ku salaysan. Saamaynta maadada ether-ka cellulose, xawaaraha wareegtada viscometer-ka iyo heerkulka ku saabsan isbeddelka viscosity ee ether-ka cellulose ee la beddelaybalastar ku salaysan ayaa la darsay. Natiijooyinka waxay muujinayaan in viscosity ee sibidhkabalastar ku salaysan si joogto ah u kordhiya kororka maadada ether cellulose, iyo viscosity ee xal ether cellulose iyo sibidhka.balastar ku salaysan waxay leedahay "saamayn kor u qaadis isku dhafan"; pseudoplasticity ee cellulose ether wax laga beddelay sibidhkabalastar ku salaysan wuu ka hooseeyaa kan sibidhka saafiga ahbalastar ku salaysan, iyo viscosity-ga Hoos u dhaca xawaaraha wareegga ee qalabka, ama hoos u dhaca mawjadaha cellulose ether oo la beddelaybalastar ku salaysan, ama inta hoose ee waxa ku jira ether cellulose, waxa aad u cad cad cad ee beenta ah ee cellulose ether sibidh wax laga beddelay.balastar ku salaysan; Iyada oo saamaynta isku dhafan ee fuuq-baxa, viscosity ee ether cellulose ayaa beddelay sibidhkabalastar ku salaysan wuu kordhi doonaa ama yaraan doonaa. Noocyada kala duwan ee ether cellulose waxay leeyihiin isbeddello kala duwan oo ku saabsan viscosity ee sibidhka la beddelaybalastar ku salaysan.

Erayada muhiimka ah: ether cellulose; sibidhbalastar ku salaysan; viscosity

0,Hordhac

Ether-ka Cellulose waxaa inta badan loo isticmaalaa sida walxaha haynta biyaha iyo dhumucyada alaabta sibidhka ku salaysan. Sida laga soo xigtay beddelaadyo kala duwan, ethers cellulose ee loo isticmaalo walxaha ku salaysan sibidhka guud ahaan waxaa ka mid ah methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxyethyl methyl cellulose Ether (Hydroxyethyl methyl cellulose, HEMC) iyo hydroxypropyl methyl cellulose (Hydroxypropyl methyl), cellulose, HPMC. kuwaas oo HPMC iyo HEMC ay yihiin kuwa ugu badan ee la isticmaalo.

Dhumucdiisuna waa wax ka beddelka muhiimka ah ee ether cellulose ee alaabta cement-ku salaysan. Eter cellulose waxay siin kartaa hoobiye qoyan leh viscosity aad u fiican, waxay si weyn u kordhin kartaa awoodda isku xirnaanta ee u dhaxaysa hoobiye qoyan iyo lakabka saldhigga, waxayna wanaajisaa waxqabadka anti-sag ee hoobiye. Waxa kale oo ay kordhin kartaa isku-dhafka iyo awoodda ka-hortagga kala-firdhinta walxaha cusub ee sibidhka ku salaysan, iyo ka hortagga delamination, kala-soocidda iyo dhiig-baxa hoobiye iyo shubka.

Saamaynta dhumucda cellulose ether ee alaabta sibidhka ku salaysan ayaa tiro ahaan lagu qiimayn karaa qaabka rheological ee alaabta sibidhka ku salaysan. Walxaha ku salaysan sibidhka waxaa badanaa loo arkaa dareeraha Bingham, taas oo ah, marka cadaadiska xiirid ee la dabaqay uu ka yar yahay soo saarista diiqada r0, maaddadu waxay ku sii jirtaa qaabkeedii asalka ahaa mana qulqulo; marka diiqadu xiirto r ka badato wax soo saarka stress r0, shaygu waxa uu maraa habacsanaan socodka socodka, iyo stress xiirid Cadaadiska r waxa uu xidhiidh toos ah la leeyahay heerka cidhiidhiga y, taas oo ah, r=r0+f·y, halka f ay tahay viscosity-ka balaastikada ah. Ethers Cellulose guud ahaan waxay kordhiyaan walbahaarka dhalidda iyo viscosity caag ah ee alaabta cement-ku salaysan, si kastaba ha ahaatee, qiyaasta hoose waxay keenaysaa in hoos u cadaadiska wax soo saarka iyo viscosity caag ah, inta badan ay sabab u tahay saamaynta-entraing hawada ethers cellulose. Cilmi-baarista Patural waxay muujineysaa in miisaanka kelli ee ether cellulose uu kordho, culeyska dhalidda ee sibidhkabalastar ku salaysan hoos u dhac, iyo joogtayntu way korodhaa.

Viscosity ee sibidhkabalastar ku salaysan waa tilmaame muhiim ah oo lagu qiimeeyo saamaynta dhumucda cellulose ether ee alaabta sibidhka ku salaysan. Suugaanta qaarkood waxay sahamiyeen sharciga isbeddelka viscosity ee xalka ether cellulose, laakiin weli waxaa jira la'aanta cilmi-baaris ku habboon saameynta ether cellulose ee isbeddelka viscosity ee sibidhka.balastar ku salaysan. Isla mar ahaantaana, marka loo eego noocyada kala duwan ee beddelka, waxaa jira noocyo badan oo ethers cellulose ah. Saamaynta noocyada kala duwan iyo viscosities ee ethers cellulose on isbedelka sibidhkabalastar ku salaysan viscosity sidoo kale waa arrin aad uga walaacsan isticmaalka etherka cellulose. Shaqadani waxay isticmaashaa viskometer wareeg ah si ay u barato isbeddellada viscosity ee cellulose ether-ka dareeraha sibidhka ee la beddelay ee noocyada kala duwan iyo viscosities ee hoos yimaada saamiga poly-ash ee kala duwan, xawaaraha wareega iyo heerkulka.

1. Tijaabi

1.1 Qalabka ceeriin

(1) Cellulose ether. Lix nooc oo ah ether-ka cellulose-ka ah ee sida caadiga ah looga isticmaalo dalkayga ayaa la doortay, oo ay ku jiraan 1 nooc oo MC ah, 1 nooc oo HEC ah, 2 nooc oo HPMC ah iyo 2 nooc oo HEMC ah, kuwaas oo ay ka mid yihiin viscosities 2 nooc oo HPMC ah iyo 2 nooc oo HEMC ah. kala duwan. Viscosity ee ether cellulose waxaa lagu tijaabiyay NDJ-1B viscometer wareeg ah (Shirkadda Shanghai Changji), xoojinta xalka tijaabada wuxuu ahaa 1.0% ama 2.0%, heerkulku wuxuu ahaa 20°C, iyo xawaaraha wareeggu wuxuu ahaa 12r/min.

(2) Sibidhka. Sibidhka Portland ee caadiga ah oo ay soo saartay Wuhan Huaxin Cement Co., Ltd. ayaa leh tilmaamo ah P·O 42.5 (GB 175-2007).

1.2 Habka cabbiraadda viscosity ee xalka ether cellulose

Qaado muunad ether cellulose ah oo tayo cayiman ah oo ku dar 250mL digsi dhalada ah, ka dibna ku dar 250g oo biyo kulul ah qiyaastii 90°C; si buuxda ugu walaaq ul dhalo ah si aad u samayso ether cellulose ka samaysato nidaam kala firdhisan oo isku mid ah biyaha kulul, isla mar ahaantaana ku rid digsiga qaboojiyaha hawada. Marka xalku bilaabo inuu dhaliyo viscosity oo aanu mar kale soo da'i doonin, isla markiiba jooji walaaqda; marka xalku hawada lagu qaboojiyo ilaa midabku lebisan yahay, ku rid basbaaska biyaha qubeyska heerkul joogto ah, oo heerkulka ku hay heerkulka la cayimay. Khaladku waa± 0.1°C; 2h ka dib (laga xisaabiyay wakhtiga xidhiidhka ee ether cellulose leh biyo kulul), cabbir heerkulka xarunta of xal heerkulbeeg ah. Soo saarista) rotor la geliyo xalka qoto dheer ee la cayimay, ka dib markaad istaagto 5min, cabbir viscosity.

1.3 Cabbirka viscosity ee sibidhka cellulose ether la beddelaybalastar ku salaysan

Tijaabada ka hor, dhammaan alaabta ceeriin ku hayso heerkulka la cayimay, miisaan miisaanka la cayimay ee ether cellulose iyo sibidhka, si fiican isku walaaq, oo ku dar biyaha tuubada heerkulka la cayimay 250mL weel dhalada ah oo leh saamiga biyaha-cement ee 0.65; ka dibna ku dar budada qallalan ee digsiga oo sug 3 daqiiqo Si fiican ugu walaaq ul galaas ah 300 jeer, geli rotor ee viscometer wareeg ah (nooca NDJ-1B, oo ay soo saartay Shanghai Changji Geological Instrument Co., Ltd.) geli xal qoto dheer oo cayiman, oo cabbir viscosity ka dib markaad istaagto 2 daqiiqo. Si looga fogaado saameynta kuleylka fuuq-celinta sibidhka ee tijaabada viscosity ee sibidhkabalastar ku salaysan Sida ugu badan ee suurtogalka ah, viscosity of cellulose ether bedelay sibidhkabalastar ku salaysan waa in la tijaabiyaa marka sibidhku taabto biyaha muddo 5 daqiiqo ah.

2. Natiijooyinka iyo falanqaynta

2.1 Saamaynta ka kooban ether cellulose

Qadarka ether cellulose halkan waxaa loola jeedaa saamiga ballaaran ee ether cellulose ilaa sibidhka, taas oo ah, saamiga polyash. Laga soo bilaabo saamaynta P2, E2 iyo H1 saddex nooc oo ethers cellulose ah oo ku saabsan isbeddelka viscosity ee sibidhkabalastar ku salaysan qiyaaso kala duwan (0.1%, 0.3%, 0.6% iyo 0.9%), waxaa la arki karaa in ka dib marka lagu daro ether cellulose, viscosity ee sibidhka.balastar ku salaysan Viscosity kordhay; marka xadiga etherka cellulose uu kordho, viscosity of cementbalastar ku salaysan si joogto ah u kordha, iyo kala duwanaanta korodhka viscosity ee sibidhkabalastar ku salaysan sidoo kale wuu sii weynaadaa.

Marka saamiga biyaha-sibidhka uu yahay 0.65 iyo nuxurka ether-ka cellulose waa 0.6%, iyada oo la tixgelinayo biyaha ay cunaan fuuq-celinta bilowga ah ee sibidhka, xoojinta ether-ka cellulose marka loo eego biyaha waa qiyaastii 1%. Marka fiirsashada ay tahay 1%, P2, E2 iyo H1 xalalka aqueous Viscosities waa 4990mPa·S, 5070mPa·S iyo 5250mPa·s siday u kala horreeyaan; marka saamiga biyaha-sibidhka yahay 0.65, viscosity ee sibidhka saafiga ahbalastar ku salaysan waa 836 mPa·S. Si kastaba ha ahaatee, viscosities ee P2, E2 iyo H1 saddex cellulose ether slurries sibidhka wax laga beddelay waa 13800mPa·S, 12900mPa·S iyo 12700mPa·s siday u kala horreeyaan. Sida iska cad, viscosity ee ether cellulose wax laga beddelay sibidhkabalastar ku salaysan ma aha viscosity of cellulose ether xal iyo Ku darida fudud ee viscosity ee sibidhka saafiga ahbalastar ku salaysan ayaa si weyn uga weyn wadarta labada viscosities, taas oo ah, viscosity ee xal ether cellulose iyo viscosity ee sibidhka.balastar ku salaysan waxay leeyihiin "saamayn sarraysiin isku dhafan". Viscosity ee xal ether cellulose waxay ka timaadaa hydrophilicity xooggan ee kooxaha hydroxyl iyo ether bonds ee cellulose ether molecules iyo qaab-dhismeedka shabakad saddex-cabbir ah oo ay sameeyeen molecules ether cellulose ee xalka; viscosity ee sibidhka saafiga ahbalastar ku salaysan waxay ka timaaddaa shabkada ka dhex samaysmay qaab dhismeedka alaabta fuuq-celinta sibidhka. Maaddaama alaabada fuuq-celinta sibidhka iyo polymer-ka ay inta badan sameeyaan qaab-dhismeedka shabakad isku-dhafan, ee ether-ka cellulose-ka la beddelay.balastar ku salaysan, Qaab dhismeedka shabakadda saddex-geesoodka ah ee ether cellulose iyo qaab-dhismeedka shabakadda ee alaabta fuuq-celinta sibidhka ayaa isku xidhan, iyo molecules ether cellulose Adsorption oo leh alaabada fuuq-celinta sibidhka ayaa si wadajir ah u soo saara "saamaynta superposition composite", taas oo si weyn u kordhisa viscosity guud ee sibidhka.balastar ku salaysan; maadaama hal unug unug unug ah oo unugyo cellulose ah ay isku dhex dari karaan unugyo badan oo unugyo cellulose ah iyo alaabada fuuq-celinta sibidhka, Sidaa darteed, kororka maadada etherka cellulose, cufnaanta qaab dhismeedka shabakadu waxay kordhisaa wax ka badan kororka unugyada ether cellulose, iyo viscosity ee sibidhka.balastar ku salaysan si joogto ah u kordha; Intaa waxaa dheer, fuuq-celinta degdegga ah ee sibidhka waxay u baahan tahay inay ka jawaabto qayb ka mid ah biyaha. , taas oo u dhiganta kordhinta fiirsashada ether cellulose, taas oo sidoo kale sabab u ah kororka weyn ee viscosity ee sibidhka.balastar ku salaysan.

Tan iyo ether cellulose iyo cementbalastar ku salaysan waxay leeyihiin "saamayn superposition ah oo isku dhafan" ee viscosity, hoos isku mid ah content ether cellulose iyo xaaladaha saamiga biyaha-cement, viscosity ee cellulose ether wax laga beddelay sibidhkabalastar ku salaysan oo leh farqi muuqda marka diirada la saaro 2% Farqiga viscosity ma weyna, tusaale ahaan, viscosities ee P2 iyo E2 waa 48000mPa·s iyo 36700mPa·s siday u kala horreeyaan ee xalka aqueous leh fiirsashada 2%. S, farqigu maaha mid cad; viscosities E1 iyo E2 ee 2% xal aqueous waa 12300mPa·S iyo 36700mPa·s siday u kala horreeyaan, farqigu aad buu u weyn yahay, laakiin viscosities ee koollada sibidhka ee la beddelay waa 9800mPa·S iyo 12900mPa siday u kala horreeyaan·S, farqiga ayaa si weyn loo dhimay, marka marka la dooranayo ether cellulose ee injineernimada, ma aha lagama maarmaan in la raaco viscosity eter cellulose xad-dhaaf ah. Intaa waxaa dheer, codsiyada injineernimada wax ku oolka ah, fiirsashada ether-ka cellulose marka loo eego biyaha badanaa waa mid hooseeya. Tusaale ahaan, hoobiye-malaasta caadiga ah, saamiga biyaha-sibidhka inta badan waa qiyaastii 0.65, iyo waxa ku jira ether cellulose waa 0.2% ilaa 0.6%. Isku-duubnaanta biyuhu waa inta u dhaxaysa 0.3% iyo 1%.

Waxa kale oo laga arki karaa natiijooyinka baaritaanka in noocyada kala duwan ee ethers cellulose ay saameyn kala duwan ku leeyihiin viscosity ee sibidhka.balastar ku salaysan. Marka fiirsashada ay tahay 1%, viscosities ee P2, E2 iyo H1 seddex nooc oo ah xalalka aqueous cellulose ether waa 4990mPa·s, 5070mPa·S iyo 5250mPa·S siday u kala horreeyaan, viscosity ee xalka H1 ayaa ah kan ugu sarreeya, laakiin viscosity ee P2, E2 iyo H1 saddex nooc oo ether cellulose ah.·S, 12900mPa·S iyo 12700mPa·S siday u kala horreeyaan, iyo viscosity ee H1 wax ka beddelka dareeraha sibidhka ayaa ahaa kan ugu hooseeya. Tani waa sababta oo ah ethers cellulose sida caadiga ah waxay leeyihiin saamaynta dib u dhigista fuuq-celinta sibidhka. Ka mid ah saddexda nooc ee ethers cellulose, HEC, HPMC iyo HEMC, HEC waxay leedahay awoodda ugu xooggan ee dib u dhigista fuuq-celinta sibidhka. Sidaa darteed, sibidhka H1 la beddelaybalastar ku salaysan, sababta oo ah fuuq-celinta sibidhka oo gaabis ah, qaab-dhismeedka shabakadda ee alaabta fuuq-celinta sibidhka ayaa si tartiib ah u kobcaysa, iyo viscosity waa kan ugu hooseeya.

2.2 Saamaynta heerka wareegga

Laga soo bilaabo saamaynta xawaaraha wareega wareega ee viscometer-ka ee viscosity ee sibidhka saafiga ahbalastar ku salaysan iyo cellulose ether sibidh wax laga beddelaybalastar ku salaysan, waxaa la arki karaa in marka xawaaraha wareeggu uu kordho, viscosity of cellulose ether sibidh wax laga beddelay.balastar ku salaysan iyo sibidh saafi ahbalastar ku salaysan hoos u dhac ku yimaada heerar kala duwan , taas oo ah, dhamaantood waxay leeyihiin hantida dhogorta xiirtay waxayna ka tirsan yihiin dareeraha pseudoplastic. Inta yar ee wareegga wareegga, ayaa sii weynaan doonta hoos u dhaca ku-meel-gaadhka dhammaan sibidhkabalastar ku salaysan iyadoo la raacayo heerka wareegga, taas oo ah, si aad u cad cad ee pseudoplasticity ee sibidhkabalastar ku salaysan. Kordhinta heerka wareegga wareegga, qalooca viscosity ayaa hoos u dhacaya sibidhkabalastar ku salaysan si tartiib tartiib ah ayey u sii fiicnaaneysaa, oo pseudoplasticity-ka ayaa daciifa. Marka la barbar dhigo sibidhka saafiga ahbalastar ku salaysan, pseudoplasticity ee cellulose ether wax laga beddelay sibidhkabalastar ku salaysan waa daciif, taas oo ah in la yiraahdo, isku darka cellulose ether wuxuu yareeyaa pseudoplasticity ee sibidhkabalastar ku salaysan.

Laga soo bilaabo saamaynta xawaaraha wareega ee viscosity ee sibidhkabalastar ku salaysan hoos noocyada ether cellulose kala duwan iyo viscosities, waxaa la garan karaa in sibidhkabalastar ku salaysan wax laga beddelay ethers cellulose kala duwan ayaa leh awood pseudoplastic oo kala duwan, iyo yaraanta viscosity ether cellulose, sare viscosity ee sibidhka la beddelay.balastar ku salaysan. Sida cad ee pseudoplasticity ee sibidhkabalastar ku salaysan waa; pseudoplasticity ee sibidhka la beddelaybalastar ku salaysan ma laha farqi muuqda oo leh noocyada kala duwan ee ethers cellulose oo leh viscosities isku mid ah. Laga soo bilaabo P2, E2 iyo H1 saddex nooc oo sibidhka cellulose ether la beddelaybalastar ku salaysan qiyaaso kala duwan (0.1%, 0.3%, 0.6% iyo 0.9%), saamaynta xawaaraha wareega ee viscosity waa la ogaan karaa, P2, E2 iyo H1 saddex nooc oo fiber ah dareeraha sibidhka ee lagu beddelay ether cad waxay leeyihiin natiijooyin isku mid ah. Marka qadarka etherka cellulose uu ka duwan yahay, been-abuurkoodu wuu ka duwan yahay. Inta yar ee etherka cellulose, ayaa sii xoogaysanaysa pseudoplasticity ee sibidhka la beddelay.balastar ku salaysan.

Ka dib markii sibidhku la xiriiro biyaha, qaybaha sibidhka ee dusha sare ayaa si degdeg ah u fuuqbaxaya, iyo alaabta fuuq-baxa (gaar ahaan CSH gel) waxay sameeyaan qaab-dhismeedka agglomeration. Marka ay jirto jihada jihada jihada ee xalka, qaab dhismeedka agglomeration ayaa furmi doona, si ay ula socdaan jihada xoogga qulqulka caabbinta jihada jihada ayaa la yareeyaa, taas oo muujinaysa hantida khafiifinta dhogorta. Eter cellulose waa nooc ka mid ah makromolecule oo leh qaab-dhismeed asymmetric ah. Marka xalku weli jiro, molecules ether cellulose waxay yeelan karaan hanuunin kala duwan. Marka ay jirto xoog xiirid jihada ah ee xalka, silsiladda dheer ee molecule ayaa soo jeesan doonta oo socon doonta. Jihada xoogga dhogorta ayaa la dhimay, taasoo keentay hoos u dhac ku yimaada caabbinta socodka, iyo sidoo kale waxay soo bandhigtaa hantida dhuuban. Marka la barbar dhigo alaabada fuuq-celinta sibidhka, unugyaraha ether-ka cellulose waa kuwo aad u dabacsan oo leh awood xaddidan oo loogu talagalay xoogga dhogorta. Sidaa darteed, marka la barbardhigo sibidhka saafiga ahbalastar ku salaysan, pseudoplasticity ee cellulose ether wax laga beddelay sibidhkabalastar ku salaysan waa daciif, iyo, marka mawduuca ama nuxurka ether cellulose kordho, saamaynta buffering ee molecules ether cellulose on xoogga dhogorta waa mid aad u cad. Caagadu waxay noqotaa daciif.

2.3 Saamaynta heerkulka

Laga soo bilaabo saamaynta isbeddelka heerkulka (20°C, 27°C iyo 35°C) on viscosity of cellulose ether ether la beddelaybalastar ku salaysan, waxaa la arki karaa marka maadada cellulose ether ay tahay 0.6%, marka heerkulku kordho, sibidhka saafiga ahbalastar ku salaysan iyo M1 Mawduuca sibidhka la beddelaybalastar ku salaysan kordhay, iyo viscosity of cellulose ether kale ee sibidhka wax laga beddelaybalastar ku salaysan hoos u dhacay, laakiin hoos u dhacu ma weynayn, iyo viscosity ee sibidhka H1 wax laga beddelaybalastar ku salaysan aad u yaraaday. Ilaa hadda sibidhka E2 la beddelaybalastar ku salaysan ayaa ka welwelsan, marka saamiga polyash waa 0.6%, viscosity ee sibidhkabalastar ku salaysan waxay hoos u dhigtaa kororka heerkulka, iyo marka saamiga polyashku yahay 0.3%, viscosity ee sibidhkabalastar ku salaysan wuxuu kordhiyaa kororka heerkulka.

Guud ahaan, sababtoo ah hoos u dhaca xoogga isdhexgalka intermolecular, viscosity ee dareeraha ayaa hoos u dhigi doona kororka heerkulka, taas oo ah kiiska xalalka ether cellulose. Si kastaba ha noqotee, marka heerkulku kor u kaco, iyo wakhtiga xidhiidhka u dhexeeya sibidhka iyo biyuhu kordho, xawaaraha fuuq-celinta sibidhka ayaa si weyn loo dardargelin doonaa, heerka fuuq-baxa ayaa kordhi doona, markaa viscosity ee sibidhka saafiga ahbalastar ku salaysan kordhin doona halkii.

In cellulose ether sibidh wax laga beddelaybalastar ku salaysan, ether cellulose waxaa lagu dhejin doonaa dusha sare ee alaabta fuuq-celinta sibidhka, taas oo joojinaysa fuuq-celinta sibidhka, laakiin noocyada kala duwan iyo qiyaasta ethers cellulose waxay leeyihiin awoodo kala duwan si ay u xakameeyaan fuuq-celinta sibidhka, MC (sida M1) waxay leedahay awood daciif ah oo lagu xakameynayo fuuq-celinta sibidhka. iyo marka heerkulku kordho, heerka fuuqbaxa ee sibidhkabalastar ku salaysan weli waa dhakhso badan yahay, marka heerkulku kordho, viscosity guud ahaan waa la kordhiyaa; HEC, HPMC iyo HEMC waxay si weyn u joojin karaan fuuq-celinta sibidhka, marka heerkulku kordho, heerka fuuq-celinta sibidhkabalastar ku salaysan wuu gaabiyaa, marka heerkulku kordho, HEC, HPMC iyo HEMC ayaa wax ka beddelay sibidhkabalastar ku salaysan (0.6% saamiga polyash) guud ahaan waa la dhimay, sababtoo ah awoodda HEC ee dib u dhigista fuuq-celinta sibidhka ayaa ka weyn kan HPMC iyo HEMC, isbeddelka etherka cellulose ee isbeddelka heerkulka (20).°C, 27°C iyo 35°C) Viscosity ee sibidhka H1 la beddelaybalastar ku salaysan hoos u dhac weyn ku yimid kororka heerkulka. Si kastaba ha ahaatee, fuuq-baxa sibidhka ayaa weli jira marka heerkulku sarreeyo, markaa heerka dhimista ether-ka cellulose-ka ayaa la beddelay.balastar ku salaysan iyadoo kororka heerkulka uusan muuqan. Ilaa hadda sibidhka E2 la beddelaybalastar ku salaysan waxay ka welwelsan tahay, marka qiyaasta qiyaasta sare tahay (saamiga dambaska waa 0.6%), saameynta joojinta fuuq-celinta sibidhka waa mid cad, iyo viscosity ayaa hoos u dhacaya kororka heerkulka; marka qiyaastu hooseyso (saamiga dambaska waa 0.3%) ), saameynta joojinta fuuq-celinta sibidhka ma aha mid cad, iyo viscosity wuxuu kordhiyaa kororka heerkulka.

3. Gabagabo

(1) Iyada oo korodhka joogtada ah ee maadada ether cellulose, viscosity iyo viscosity korodhka heerka sibidhkabalastar ku salaysan sii wad kororka. Qaab dhismeedka shabakadda molecular ee ether cellulose iyo qaab dhismeedka shabakadda alaabada fuuqbaxa sibidhka ayaa isku xidhan, iyo fuuq-celinta bilowga ah ee sibidhka waxay si dadban u kordhisaa xoojinta ether-ka cellulose, sidaa darteed viscosity ee xalka ether cellulose iyo sibidhkabalastar ku salaysan waxay leedahay "saamayn superposition ah oo isku dhafan", taas oo ah, cellulose ether The viscosity ee sibidhka la beddelay.balastar ku salaysan ayaa aad uga badan wadarta viscosities-kooda. Marka la barbar dhigo HPMC iyo HEMC slurries sibidhka la beddelay, HEC wax ka beddelka dareeraha sibidhka waxay leeyihiin qiyamka tijaabada viscosity hoose sababtoo ah horumarinta fuuq-celinta oo gaabis ah.

(2) Labada cellulose ether sibidh wax laga beddelaybalastar ku salaysan iyo sibidh saafi ahbalastar ku salaysan leeyihiin hantida dhogorta xiirid ama caag ah; pseudoplasticity ee cellulose ether wax laga beddelay sibidhkabalastar ku salaysan wuu ka hooseeyaa kan sibidhka saafiga ahbalastar ku salaysan; hoos udhaca heerka wareega, ama cellulose-ku hoos u dhaco viscosity ee sibidhka ether-la beddelaybalastar ku salaysan, ama inta hoose ee waxa ku jira ether cellulose, waxa aad u cad cad cad ee been abuurka ah ee cellulose ether-la habeeyey sibidhkabalastar ku salaysan.

(3) Marka heerkulku kor u kaco, xawliga iyo heerka fuuq-baxa sibidhka ayaa kordha, sidaa darteed mawjadaha sibidhka saafiga ahbalastar ku salaysan si tartiib tartiib ah u kordha. Sababtoo ah noocyada kala duwan iyo qiyaasta ethers cellulose waxay leeyihiin awoodo kala duwan si ay u xakameeyaan fuuq-celinta sibidhka, viscosity ee koollada sibidhka ee la beddelay waxay ku kala duwan tahay heerkulka.