Nadiifinta hydroxypropyl methylcellulose ee dhismaha hoobiye dahaarka iyo budada putty waxay si toos ah u saameeyaan tayada dhismaha injineernimada, markaa waa maxay arrimaha saameeya nadiifnimada hydroxypropyl methylcellulose? Aan kaaga jawaabo su'aashan.
Habka wax soo saarka ee hydroxypropyl methylcellulose, oksijiinta hadhaaga ah ee ku jirta reactor waxay sababi doontaa hoos u dhaca hydroxypropyl methylcellulose waxayna yaraynaysaa miisaanka kelli, laakiin ogsijiinta hadhaaga ah waa mid xadidan, ilaa iyo inta aysan aad u adagayn in dib loo xiro molecules burburay Musiibo. Heerka ugu muhiimsan ee buuxinta biyaha ayaa wax badan ku lug leh waxa ku jira hydroxypropyl. Warshadaha qaarkood waxay rabaan oo kaliya inay yareeyaan qiimaha iyo qiimaha, laakiin ma rabaan inay kordhiyaan nuxurka hydroxypropyl, markaa tayada ma gaari karto heerka badeecadaha shisheeye ee la midka ah.
Heerka haynta biyaha ee hydroxypropyl methylcellulose sidoo kale waxay xiriir weyn la leedahay hydroxypropyl, iyo dhammaan habka falcelinta, hydroxypropyl sidoo kale waxay go'aamisaa heerka haynta biyaha ee hydroxypropyl methylcellulose. Saamaynta alkalization, saamiga methyl chloride iyo propylene oxide, xoojinta alkali iyo saamiga biyaha ee suufka la safeeyey oo dhan ayaa go'aamiya waxqabadka alaabta.
Tayada alaabta ceeriin, saameynta alkalization, xakamaynta saamiga ee habka, saamiga dareeraha iyo saameynta dhexdhexaadinta ayaa dhammaan go'aamiya tayada hydroxypropyl methylcellulose, iyo qaar ka mid ah hydroxypropyl methylcellulose ayaa la sameeyaa si ay u milaan ka dib, waxay ahayd daruuro sida ku darista caanaha, qaar caano cad, qaarna hurdi bay ahaayeen, qaarna waxay ahaayeen kuwo cad oo hufan. Haddii aad rabto inaad xalliso, wax ka beddel qodobada kor ku xusan. Mararka qaarkood acetic acid waxay si xun u saameyn kartaa gudbinta iftiinka. Waxaa fiican in la isticmaalo acetic acid ka dib marka la qaso. Saamaynta ugu weyni waa haddii falcelinta si siman loo kiciyay iyo in saamiga nidaamku uu yahay mid deggan (qalabka qaarkood waxay leeyihiin qoyaan, waxa ku jirana waa mid aan degganayn, sida dareerayaasha dib-u-warshadaynta). Dhab ahaantii, arrimo badan ayaa ciyaaraya. Iyada oo xasilloonida qalabka iyo hawlgalka hawlwadeennada si fiican u tababaran, alaabooyinka la soo saaray waa inay ahaadaan kuwo aad u deggan. Gudbinta iftiinka kama badnaan doonto inta u dhexeysa ± 2%, iyo isku-bedelka isku midka ah ee kooxaha beddelka ah waa in si wanaagsan loo xakameeyo. Halkii midnimo laga ahaan lahaa, gudbinta iftiinka hubaal way fiicnaan lahayd.
Waqtiga boostada: Meey-30-2023