Ku buufinta dahaadhka caagga ah ee deg-degga ah ee dejinaya daahan aan biyuhu lahayn waa daahan biyaha ku salaysan. Haddii diaphragm-ka aan si buuxda loo ilaalin ka dib marka la buufiyo, biyuhu gabi ahaanba ma bixi doonaan, iyo goobooyin hawo cufan ayaa si fudud u soo bixi doona inta lagu jiro dubista heerkulka sare, taas oo keeneysa khafiifinta filimka biyuhu, iyo biyo-celin liidata, ka hortagga daxalka, iyo iska caabinta cimilada. . Sababtoo ah xaaladaha deegaanka dayactirka ee goobta dhismuhu inta badan waa kuwo aan la xakameyn karin, waxaa lagama maarmaan ah in la wanaajiyo iska caabinta heerkulka sare ee daahan caag ah oo degdeg ah oo lagu buufiyo dahaarka aan biyaha lahayn marka loo eego qaabaynta.
Eter cellulose-ka biyaha ku milma ayaa la doortay si loo hagaajiyo iska caabinta heerkulka sare ee buufinta degdega ah ee daamurka caagga ah ee qalabka ilaalinta biyaha. Isla mar ahaantaana, saamaynta nooca iyo qadarka ether cellulose ee sifooyinka farsamada, waxqabadka buufinta, caabbinta kulaylka iyo kaydinta buufinta degdega ah ee caagga ah ee caagga ah ee daboolka biyaha ayaa la darsay. saamaynta waxqabadka.
Tusaalaha diyaarinta
Ku milmo hydroxyethyl cellulose 1/2 biyaha deionized, walaaq ilaa ay si buuxda u milmaan, ka dibna ku dar emulsifier iyo sodium hydroxide inta ka hartay 1/2 biyaha deionized oo si siman u walaaq si aad u diyaariso xal saabuun ah, ugu dambeyntii, isku qas labada xal waa si siman isku qasan si loo helo xal aqueous ah oo ah hydroxyethyl cellulose, iyo qiimihiisu pH waxaa la xakameeyaa inta u dhaxaysa 11 iyo 13.
Isku qas daamurka emulsified, cinjirka neoprene, xal aqueous hydroxyethyl cellulose, defoamer, iwm. iyadoo loo eegayo saamiga qaarkood si aad u hesho walxaha A.
U diyaari xaddi gaar ah oo ah Ca (NO3)2 xal aqueous sida walxaha B.
Isticmaal qalabka wax lagu buufiyo ee koronto oo gaar ah si aad ugu buufiso walxaha A iyo walxaha B isla mar ahaantaana warqadda la sii daayo, si labada shay loola xiriiro oo si deg deg ah loogu dhejiyo filim inta lagu jiro habka atomization cross.
Natiijooyinka iyo doodaha
Hydroxyethyl cellulose oo leh viscosity of 10 000 mPa·s iyo 50 000 mPa·s ayaa la doortay, iyo habka wax lagu daro ka dib ayaa la qaatay si loo barto saamaynta viscosity iyo kordhinta qadarka hydroxyethyl cellulose ee waxqabadka buufinta ee dejinta degdega ah. Laami caag ah oo aan biyuhu lahayn, guryaha filim samaynta, caabbinta kulaylka, qalabka farsamada iyo guryaha kaydinta. Si looga fogaado waxyeellada dheellitirka nidaamka ee ay sababtay isku-darka dareeraha hydroxyethyl cellulose, taasoo keentay demulsification, emulsifier iyo xakamaynta pH ayaa lagu daray inta lagu jiro diyaarinta xalalka hydroxyethyl cellulose.
Saamaynta Viscosity of Hydroxyethyl Cellulose (HEC) ee buufinta iyo samaynta filimada ee Dahaarka aan biyuhu
Sida weyn ee viscosity of hydroxyethyl cellulose (HEC), weyn saamaynta ku buufin iyo sifooyinka samaynta filimada ee daahan biyuhu. Marka qadarkeeda lagu daro 1 ‰, HEC oo leh viscosity of 50 000 mPa·s waxay samaysaa viscosity ee nidaamka daahan biyuhu Marka la kordhiyo 10 jeer, buufintu aad bay u adag tahay, diaphragm-ka ayaa si aad ah u yaraanaya, halka HEC oo leh viscosity 10 000 mPa·s wax yar ayay ku leedahay buufinta, iyo diaphragm-ku si caadi ah ayuu u yaraanayaa.
Saamaynta Hydroxyethyl Cellulose (HEC) ee Cadaadiska Kulaylka ee Dahaarka aan biyuhu lahayn
Dahaarka caagga ah ee degdega ah ee la buufiyay ayaa lagu buufiyay xaashida aluminiumka si loogu diyaariyo muunada tijaabada kulaylka, waxaana lagu daaweeyay iyadoo loo eegayo xaaladaha daawaynta ee daahan biyo-la'aanta ku salaysan ee ku qeexan heerka qaranka GB/T 16777- 2008. Cellulose-ka hydroxyethyl oo leh muuqiisa 50 000 mPa·s waxa uu leeyahay miisaan yar oo unugyo ah. Marka lagu daro dib u dhigista uumiga biyaha, waxay sidoo kale leedahay saameyn xoog leh oo gaar ah, taas oo adkeyneysa in biyuhu ay ka soo baxaan gudaha dahaarka, sidaas darteed waxay soo saari doontaa qulqulo waaweyn. Miisaanka molecular ee hydroxyethyl cellulose oo leh viscosity of 10 000 mPa·s waa yar yahay, taas oo saameyn yar ku leh xoogga walxaha oo aan saameyn ku yeelaneynin isbeddelka biyaha, sidaas darteed ma jiro jiil xumbo.
Saamaynta cadadka hydroxyethyl cellulose (HEC) lagu daray
Hydroxyethyl cellulose (HEC) oo leh viscosity of 10 000 mPa·s ayaa loo doortay shayga cilmi-baarista, iyo saameynta kala duwan ee lagu daro HEC ee waxqabadka buufinta iyo iska caabbinta kulaylka ee daboolka biyuhu ayaa la baaray. Iyadoo la tixgelinayo waxqabadka buufinta, caabbinta kulaylka iyo sifooyinka farsamada ee daahan aan biyuhu lahayn si buuxda, waxaa loo tixgeliyaa in qadarka ugu wanaagsan ee lagu daro hydroxyethyl cellulose uu yahay 1 ‰.
Latex-ka neoprene ee ku jira dahaarka caagga ah ee degdega ah ee dahaadhka ah ee dahaarka ah iyo daamurka emulsified ayaa farqi weyn u dhexeeya polarity iyo cufnaanta, taas oo keenta delamination walxaha A muddo gaaban gudahood inta lagu jiro kaydinta. Sidaa darteed, inta lagu jiro dhismaha goobta Waxay u baahan tahay in si siman loo walaaqo ka hor inta aan la buufin, haddii kale waxay si fudud u horseedi doontaa shilal tayo leh. Hydroxyethyl cellulose waxay si wax ku ool ah u xalin kartaa dhibaatada delamination ee daahan caagga ah oo deg-deg ah lagu buufiyo dahaarka aan biyuhu lahayn. Ka dib hal bil oo kaydin ah, weli ma jiro delamination. Viscosity ee nidaamka ma beddelo wax badan, iyo xasiloonida waa wanaagsan.
diiradda
1) Ka dib markii hydroxyethyl cellulose lagu daro buufin degdeg ah-dejinta caag asphalt daahan biyuhu, caabbinta kulaylka ee daahan biyuhu si weyn ayaa loo hagaajiyaa, iyo dhibaatada goobooyin cufan on dusha daahan ayaa si weyn u hagaagtay.
2) Marka la eego dhismaha ee aan saameyn ku yeelan habka buufinta, waxqabadka filim-sameynta iyo qalabka farsamada, hydroxyethyl cellulose waxaa lagu go'aamiyay in uu noqdo cellulose hydroxyethyl oo leh viscosity of 10 000 mPa·s, iyo qadarka dheeriga ah wuxuu ahaa 1 ‰.
3) Ku darida hydroxyethyl cellulose waxay wanaajisaa xasiloonida kaydinta ee daahan caagga ah ee degdega ah ee lagu buufiyo dahaarka aan biyuhu lahayn, wax delamination ma dhaco ka dib kaydinta hal bil ah.
Waqtiga boostada: Meey-29-2023