Alaabooyinka fiitamiinada waxaa dhamaantood laga soo saaraa saxarka suufka dabiiciga ah ama saxarka alwaax, kaas oo lagu soo saaro etherification.Alaabooyinka cellulose ee kala duwan waxay isticmaalaan walxo kala duwan oo etherifying.Wakiilka etherifying ee loo isticmaalo hydroxyethyl cellulose (HEC) waa ethylene oxide, iyo wakiilka etherifying ee loo isticmaalo hydroxypropyl methylcellulose (HPMC) waa noocyada kale ee wakiilada etherifying.(chloromethane iyo propylene oxide).
Rinjiga dhabta ah ee szone iyo rinjiga cinjirka, hydroxyethyl cellulose waxaa loo isticmaali karaa dhumuc ahaan.
Rinjiga dhagaxa dhabta ah waa sahlan tahay in la soo dejiyo sababtoo ah qadarka weyn ee isku-darka iyo qadarka weyn.Waa lagama maarmaan in lagu daro dhumuc si ay u kordhiso viscosity si ay u buuxiso viscosity looga baahan yahay buufinta inta lagu jiro dhismaha, hagaajinta xasiloonida kaydinta, iyo in la gaaro xoog gaar ah.
Haddii aad rabto rinji dhagax ah oo dhab ah si aad u hesho xoog wanaagsan, caabbinta biyaha wanaagsan iyo caabbinta cimilada, xulashada alaabta ceeriin iyo naqshadeynta caanaha ayaa aad muhiim u ah.
Xaaladaha caadiga ah, qadarka emulsion ee loo isticmaalo rinji dhagax ah oo tayo sare leh ayaa noqon doona mid aad u sarreeya.
Tusaale ahaan, tan oo rinji dhagax ah oo dhab ah, waxaa jiri kara 300kg oo ah emulsion saafi ah iyo 650kg oo ciid dhagax ah oo midab dabiici ah.Marka maaddada adag ee emulsion ay tahay 50%, mugga 300kg ee emulsion ka dib qalajinta waa qiyaastii 150 litir, iyo 650kg oo ciid ah waa qiyaastii 228 litir.Taasi waa in la yidhaahdo, PVC (fiirsashada mugga midabka) ee rinjiga dhagaxa dhabta ah waa 60% wakhtigan, sababtoo ah qaybaha ciidda midabka leh waa kuwo waaweyn oo aan caadi ahayn oo qaabaysan, oo hoos yimaada xaaladda qaybinta qaybinta qayb gaar ah, qalajiyey Rinjiga dhabta ah ee dhagaxa ayaa laga yaabaa inuu ku jiro CPVC (fiirsashada baaxadda muhiimka ah).Diiradda mugga midabka) qiyaastii.Ilaa hadda sida dhumucdiisu ay khusayso, haddii aad doorato cellulose leh viscosity ku habboon, rinjiga dhagaxa dhabta ah wuxuu samayn karaa filim rinji dhamaystiran oo cufan si uu u buuxiyo saddexda shuruudood ee waxqabadka ugu weyn ee rinjiga dhagaxa dhabta ah.Haddii nuxurka emulsion rinjiga dhagaxa dhabta ah uu hooseeyo, waxaa lagu talinayaa in la isticmaalo cellulose leh viscosity sare sida dhumucdiisuna (sida 100,000 viscosity), gaar ahaan ka dib markii qiimaha cellulose kordho, taas oo hoos u dhigi kartaa qadarka cellulose loo isticmaalo iyo samayn dhagax dhab ah Waxqabadka rinjiga ayaa ka fiican.
Qaar ka mid ah soosaarayaasha rinjiga dhagaxa dhabta ah waxay isticmaalaan hydroxypropyl methylcellulose halkii ay ka isticmaali lahaayeen hydroxyethyl cellulose kharashka iyo arrimo kale.
Marka la barbar dhigo labada nooc ee cellulose, hydroxyethyl cellulose waxay leedahay haynta biyaha ka fiican, ma lumin doonto haynta biyaha sababta oo ah jelatin heerkul sarreeya, waxayna leedahay caabbinta caarada qaarkood.Tixgelinta waxqabadka, waxaa lagu talinayaa in la isticmaalo hydroxyethyl cellulose oo leh maqaar 100,000 ah sida dhumuc weyn oo loogu talagalay rinjiga dhagaxa dhabta ah.
Waqtiga boostada: Abriil-28-2023