Badeecadaha fiitamiinada dhammaantood waxaa laga soo qaatay saxarka suufka dabiiciga ah ama saxarka alwaaxa, kuwaas oo lagu soo saaro etherification. Badeecadaha cellulose ee kala duwan waxay isticmaalaan walxo etherifying kala duwan. Wakiilka etherifying ee loo isticmaalo hydroxyethyl cellulose (HEC) waa ethylene oxide, wakiilka etherifying ee loo isticmaalo hydroxypropyl methylcellulose (HPMC) waa noocyo kale oo walxaha etherifying ah. (chloromethane iyo propylene oxide).
Rinjiga dhabta ah ee szone iyo rinjiga latex, hydroxyethyl cellulose waxaa loo isticmaali karaa sidii dhumuc-saare.
Rinjiga dhagaxa dhabta ah si fudud ayaa loo soo daadin karaa sababtoo ah tirada badan ee isku-darka iyo gaar ahaanshihiisa. Waxaa lagama maarmaan ah in lagu daro dhumuc-dhejin si loo kordhiyo isku-dhejinta si loo daboolo isku-dhejinta loo baahan yahay si loogu buufiyo inta lagu jiro dhismaha, loo hagaajiyo xasilloonida kaydinta, loona gaaro xoog gaar ah.
Haddii aad rabto rinji dhagax dhab ah si aad u gaarto xoog wanaagsan, iska caabin biyo oo wanaagsan iyo iska caabin cimilo, xulashada alaabta ceeriin iyo naqshadeynta qaacidada ayaa aad muhiim u ah.
Xaaladaha caadiga ah, xaddiga emulsion-ka ee loo isticmaalo rinjiga dhagaxa dhabta ah ee tayada sare leh wuxuu noqon doonaa mid aad u sarreeya.
Tusaale ahaan, hal tan oo rinji dhagax dhab ah, waxaa jiri kara 300kg oo emulsion acrylic saafi ah iyo 650kg oo ciid dhagax midab dabiici ah leh. Marka maaddada adag ee emulsion-ku ay tahay 50%, mugga 300kg ee emulsion-ka ka dib qalajinta waa qiyaastii 150 litir, mugga 650kg ee ciidduna waa qiyaastii 228 litir. Taasi waxay la macno tahay, PVC (fiirsashada mugga midabka) ee rinjiga dhagaxa dhabta ah waa 60% waqtigan, sababtoo ah walxaha ciidda midabka leh waa kuwo waaweyn oo aan caadi ahayn, iyo xaalad ay jirto qaybin cabbir gaar ah oo walxaha ah, rinjiga dhagaxa dhabta ah ee la qalajiyey wuxuu ku jiri karaa CPVC (fiirsashada tirada muhiimka ah). Fiirsashada mugga midabka) qiyaastii. Ilaa inta laga hadlayo dhumucda, haddii aad doorato cellulose oo leh viscosity ku habboon, rinjiga dhagaxa dhabta ah wuxuu samayn karaa filim rinji oo dhammaystiran oo cufan si uu u buuxiyo saddexda shuruudood ee waxqabadka ugu waaweyn ee rinjiga dhagaxa dhabta ah. Haddii waxa ku jira emulsion-ka rinjiga dhagaxa dhabta ah uu hooseeyo, waxaa lagu talinayaa in la isticmaalo cellulose leh viscosity sare sida dhumuc weyn (sida 100,000 viscosity), gaar ahaan ka dib marka qiimaha cellulose uu kordho, taas oo yarayn karta xaddiga cellulose ee la isticmaalo oo ka dhigi karta dhagaxa dhabta ah Waxqabadka rinjiga ayaa ka wanaagsan.
Qaar ka mid ah soosaarayaasha rinjiga dhagaxa dhabta ah ee dhaqaale ahaan dhaqaale ahaan waxay isticmaalaan hydroxypropyl methylcellulose halkii ay ka isticmaali lahaayeen hydroxyethyl cellulose kharash ahaan iyo arrimo kale.
Marka la barbardhigo labada nooc ee cellulose, hydroxyethyl cellulose waxay leedahay haynta biyaha oo ka wanaagsan, ma waayi doonto haynta biyaha sababtoo ah jelatin heerkulka sare, waxayna leedahay iska caabin gaar ah oo caariyaysi ah. Si loo tixgeliyo waxqabadka, waxaa lagu talinayaa in la isticmaalo hydroxyethyl cellulose oo leh dheellitirnaan dhan 100,000 oo ah dhumuc ahaan rinjiga dhagaxa dhabta ah.
Waqtiga boostada: Abriil-28-2023