Ubumsulwa be-hydroxypropyll methylcellulose ekwakheni uMotar we-Thermal Infartation kanye ne-putty powder kuthinta ngqo ikhwalithi yokwakhiwa kobunjiniyela, ngakho-ke yiziphi izinto ezithinta ubumsulwa be-hydroxypropylyll methylcellulose? Sikusize uphendule lo mbuzo namuhla.
Enqubweni yokukhiqiza ye-hydroxypropyll methylcellulose, i-oxygen eyinsalela kwi-reactor izodala ukonakala kwe-hydroxypropylllylyll methylcellulose futhi inciphise isisindo se-molecular, kepha i-oxygen esele ixhunyaniswa, inqobo nje uma ama-molecule aphukile axhunyiwe, akunzima kakhulu. Inhlekelele. Izinga lokugcwaliswa kwamanzi elibaluleke kakhulu linokunye okuqukethwe ngokuqukethwe kwe-hydroxypropyl. Amanye amafektri avele afune ukunciphisa izindleko nentengo, futhi akazimisele ukwandisa okuqukethwe kwe-hydroxypropyl, ngakho-ke ikhwalithi ayikwazi ukufinyelela ezingeni ngemikhiqizo efanayo yakwamanye amazwe.
Izinga lokugcina lamanzi le-hydroxypropylllylyly futhi linobudlelwano obuhle ne-hydroxyproppy, kanye nenqubo yonke yokusabela, i-hydroxypropyl futhi inquma inani lokugcinwa kwamanzi le-hydroxypropyllllylylylylyl. Umphumela we-alkalizing, isilinganiso se-methyl chloride ukuze i-propelene oxide, ukugcwala kwe-alkali kanye nesilinganiso samanzi ukuze kuncishiswe ukotini konke kunquma izakhiwo zomkhiqizo.
Ikhwalithi yezinto zokusetshenziswa ezivuthiwe, umphumela we-alkalioting, ukuphathwa kwesilinganiso senqubo, isilinganiso se-solvent kanye nomphumela we-hydroxypropylyly methylcellulose, kanti kunamafu amaningi anciphisa ubisi, amanye amhlophe amhlophe, amanye acwebezelayo, kanti amanye aphuzi, kanti aphuzi acwebezelayo, kanti amanye acwebile futhi acacile. Ukuyixazulula, shintsha kusuka kumaphuzu angenhla. Kwesinye isikhathi i-acetic acid ingathinta kakhulu ukudluliselwa kokukhanya. Kuhle ukusebenzisa i-acetic acid ngemuva kwe-dilution. Umthelela omkhulu kuwukuthi ukushukumisela kokusabela kufana nokuthi umfaniswano uzinzile (ezinye izinto zokwenziwa zinokuqukethwe okungamanzi okungazinzile, njenge-solvent esetshenziselwa ukuphinda usebenzise kabusha). Izici eziningi zidlala. Ukuqina kwemishini nokusebenza kwabasebenza kahle kufanele kukhiqize imikhiqizo ezinzile. Ukuhanjiswa okukhanyayo ngeke kweqe uhla lwe- ± 2 2%, kanye nokufakwa esikhundleni kwamaqembu angeziwe kufanele kulawulwe kahle. Esikhundleni somfaniswano, ukudluliselwa nakanjani kuzolunga.
Ngakho-ke, ikhwalithi enhle yomkhiqizo inqunywa ngezinto eziluhlaza, ubuchwepheshe bokukhiqiza, nezinye izinto. Kuphela ngokulawula ngokuqinile kusuka kokunye kuze kube sekupheleni kungakhiqizwa ngekhwalithi ezinzile.
Isikhathi sePosi: Feb-20-2025