Maaddaama aragtida biyaha ku saleysan biyaha ay aad u yar tahay, ma buuxin karto baahiyaha kaydinta iyo waxqabadka dhismaha ee dahaarka, marka waa lagama maarmaan in la isticmaalo dhumuc ku habboon si loo hagaajiyo qaboojinta daboolka ku saleysan biyaha ee gobolka saxda ah.
Waxaa jira noocyo badan oo dhumucyo ah. Markaad dooranayso dhudhun, marka lagu daro hufnaanta qaro weyn iyo xakameynta kala-goynta dahaarka, qaar kale waa in loo tixgeliyaa inay ka dhigayaan wax qaddarka dhismaha ee ugu wanaagsan, muuqaalka filimka ugu fiican iyo nolosha adeegga ugu fiican.
Xulashada noocyada dhumucda ayaa inta badan ku saleysan baahida iyo xaaladda dhabta ah ee sameynta.
Markaad dooranayso oo adeegsanaya dhumucdu, kuwan waa muhiim.
1. Miisaan culus oo Molecular HEC ayaa leh darajo weyn oo lagu xalin karo isbarbardhiga miisaanka molika ee hooseeya oo uu soo bandhigayo hufnaanta qaro weyn ee qaro weyn inta lagu keydiyo. Oo marka heerka xiirashada uu kordho, gobolka dabaysha ayaa la baabi'iyaa, cufnaanta xiirashada, ka yar saamaynta culeyska molikalar ee viscosity. Habkan qaroga leh wax lug ah kuma lahan sheyga saldhigga ah, midabka iyo waxyaabaha lagu daro ee la isticmaalay, kaliya waxay u baahan yihiin inay doortaan miisaanka midigta ee midigta ah ee cellulose iyo hagaajinta uruurinta dhumucdu waxay heli kartaa Viscory-ka saxda ah, sidaas darteedna si ballaaran loo isticmaalaa.
2.Heur dhumuc weyne waa xalka aquous viscous oo leh DOAL ama DIO Ethe ether oo ah isku-darka, oo leh waxyaabo adag oo ah 20% ~ 40%. Doorka wadashaqeyntu waa in la xakameeyo adhesion, haddii kale dhumucduhu waxay ku jiraan gobolka jel isla isku mid. Isla mar ahaantaana, joogitaanka dareeraha ayaa ka fogayn kara sheyga qaboojinta, laakiin waa in la diiriyo xilliga qaboobaha ka hor intaanad isticmaalin.
3. Alaabada adag ee adag, ee-hoose ayaa sahlan in la tuuro oo lagu qaadi karo laguna keydin karo bulk. Sidaa darteed, qaar ka mid ah Xoolaha Xirmooyinka Helur waxay leeyihiin waxyaabo adag oo isku mid ah oo wax qabad ah. Isku-darka ka kooban ee dhumucooda yar ee jawiga hooseeya ayaa ka sarreeya, oo muuqaal-qaboojiyaha gadhka ee rinjiga ayaa waxyar ka yaraan doona marka la isticmaalo, kaas oo laga bilaabi karo iyadoo la dhimo wada-noolaadda meel kale oo lagu daray.
4. Xaaladaha isku-darka ee ku habboon, Helpcosity-ka hooseeya ayaa si toos ah loogu dari karaa rinjiga 'latex'. Markaad isticmaaleyso alaabada viscosity-ka sare, dhumucdu waxay u baahan tahay in lagu qasiyo biyo isku dar ah iyo isku-darka ka hor intaan lagu darin. Haddii aad ku darto biyo si aad ugu milmayso dhumucda dhumucdu, waxay yareyn doontaa uruurinta wadashaqeynta asalka ah ee sheyga, kaas oo kordhin doona isku-dhafka oo sababi doona meyrka inuu kaco.
5. Ku darista dhumuc weyn haanta lagu qaso waa inuu ahaadaa mid joogto ah oo gaabis ah, waana in lagu dhejiyaa haanta derbiga. Xawaaraha ku darista waa inaysan si dhakhso ah u noqon in culuhu ay ku taal dusha sare ee dareeraha, laakiin waa in lagu jiidaa dareeraha oo lagu giijiyaa agagaarka shaashadda, haddii kale dhumucdu si fiican uma dhex qabin ama dhumucduhu way sii yaraan doonaan ama u soo baxaan uruurinta maxalliga ah ee sare.
6. Xaafada hear waxaa lagu daraa haanta isku qasan rinjiga ka dib qaybaha kale ee dareeraha ah iyo emulsion ka hor, si loo hubiyo in ugu badan.
7. Hase dhumucdu si toos ah ayaa loogu daraa rinjiga qaab emulsion ah soo saarista rinjiga emulsion ee aan lahayn dillaac hore ama ka-hortagga ka hor. Waxaa lagu dari karaa qaybta ugu dambeysa ee wejiga isku-darka, wajiga kala-sooca rinjiga, ama qaybta koowaad ee isku-darka.
8. Maadaama ay tahay in Hase ay tahay emulsion aashito sareeya, ka dib markii lagu daro, haddii alkali ku jiro rinjiga emulsion, waxay u tartami doontaa alkali this. Sidaa darteed, waxaa looga baahan yahay in lagu daro 'Hase' si tartiib tartiib ah oo si isdaba joog ah, oo si fiican u walaaq, haddii kale, waxay ka dhigeysaa nidaamka kala-sooca rinji, iyo kan dambe ee loo yaqaan 'emulsion', tan dambena waxaa lagu dejiyaa kooxda dusha sare ee kacsan.
9. Alkali waxaa lagu dari karaa ka hor ama ka dib wakiilka qarosiinta lagu daro. Faa'iidada lagu daro ka hor intaan la hubin in xasillooni darrida maxalliga ah ee kala-sooca-dhajinta ama ay ka dhalinayso dhumucda dhumucdu ka soo qaaddo dusha sare ee midabka ama xargaha. Faa'iidada lagu daro alkali ka dib waa in walxaha culaysku ay si fiican u kala firdhiyaan ka hor intaysan bararsan yihiin ama ay kala diri jireen alkali, iyadoo ay ku xidhan tahay qaabka maxalliga ah, iyadoo kuxiran sameynta, qalabka iyo wax soo saarka wax soo saarka iyo waxsoosaarka. Habka ugu aaminka badan ayaa ah in lagu milagalo hawada sare ee biyaha marka hore ka dibna ka takhalusidda alkali ka hor.
10. Hase culaysku wuxuu bilaabaa inuu bararo at ph oo qiyaastii ah 6, oo hufnaanta qaroku waxay ku dhex ridaa ciyaar buuxda oo ah rinjiga 7 ilaa 8-da , sidaas awgeed hubinta xasilloonida viscosity.
Waqtiga Post: Agoosto-05-2022