Ukuhlanzeka kwe-hydroxypropyl methylcellulose ekwakheni udaka lwe-insulation kanye ne-putty powder kuthinta ngokuqondile izinga lokwakhiwa kobunjiniyela, ngakho yiziphi izici ezithinta ukuhlanzeka kwe-hydroxypropyl methylcellulose? Ake ngikuphendule lombuzo.
Enqubweni yokukhiqiza i-hydroxypropyl methylcellulose, i-oksijeni esele ku-reactor izobangela ukuwohloka kwe-hydroxypropyl methylcellulose futhi kunciphise isisindo samangqamuzana, kodwa umoya-mpilo osele ulinganiselwe, inqobo nje uma kungenzima kakhulu ukuxhuma kabusha ama-molecule aphukile Inhlekelele. Izinga elibaluleke kakhulu lokugcwala kwamanzi lihlobene kakhulu nokuqukethwe kwe-hydroxypropyl. Ezinye izimboni zifuna kuphela ukunciphisa izindleko nentengo, kodwa azifuni ukwandisa okuqukethwe kwe-hydroxypropyl, ngakho ikhwalithi ayikwazi ukufinyelela izinga lemikhiqizo efanayo yangaphandle.
Izinga lokugcinwa kwamanzi le-hydroxypropyl methylcellulose nalo linobudlelwane obuhle ne-hydroxypropyl, futhi kuyo yonke inqubo yokusabela, i-hydroxypropyl iphinde inqume izinga lokugcinwa kwamanzi le-hydroxypropyl methylcellulose. Umthelela we-alkalization, isilinganiso se-methyl chloride ne-propylene oxide, ukugcwala kwe-alkali kanye nesilinganiso samanzi ukotini ocolisisiwe konke kunquma ukusebenza komkhiqizo.
Izinga lezinto zokusetshenziswa, umthelela we-alkalization, isilinganiso sokulawulwa kwenqubo, isilinganiso sezincibilikisi kanye nomthelela we-neutralization konke kunquma ikhwalithi ye-hydroxypropyl methylcellulose, kanti enye i-hydroxypropyl methylcellulose yenziwa ukuze incibilike Ngemva kwalokho, laliguqubele njengokwengeza ubisi, ezinye zimhlophe qhwa, ezinye ziphuzi, futhi ezinye zazicacile futhi zikhanya. Uma ufuna ukuyixazulula, lungisa kusuka kumaphuzu angenhla. Kwesinye isikhathi i-acetic acid ingathinta kakhulu ukudluliselwa kokukhanya. Kungcono ukusebenzisa i-acetic acid ngemuva kokuhlanjululwa. Umthelela omkhulu ukuthi ukusabela kushukunyiswa ngokulinganayo nokuthi isilinganiso sohlelo sizinzile yini (ezinye izinto ezinomswakama futhi okuqukethwe akuzinzile, njengokugaywa kabusha kwezinyibilikisi). Eqinisweni, Ziningi izici ezisebenzayo. Ngokuzinza kwemishini kanye nokusebenza kwabaqhubi abaqeqeshwe kahle, imikhiqizo ekhiqizwayo kufanele izinze kakhulu. Ukudlulisa ukukhanya ngeke kudlule ububanzi obungu-±2%, futhi ukufana kwamaqembu abambele kufanele kulawulwe kahle. Esikhundleni sokufana, ukudlulisa ukukhanya kuzoba kuhle.
Isikhathi sokuthumela: May-30-2023