Sakamakon thickening na cellulose ether ya dogara da: digiri na polymerization na cellulose ether, bayani maida hankali, karfi kudi, zazzabi da sauran yanayi.Kayan gelling na maganin ya keɓanta ga alkyl cellulose da abubuwan da aka gyara.Abubuwan gelation suna da alaƙa da matakin maye gurbin, ƙaddamar da bayani da ƙari.Don abubuwan da aka gyara na hydroxyalkyl, abubuwan gel ɗin kuma suna da alaƙa da canjin canjin hydroxyalkyl.Domin low danko MC da HPMC, 10% -15% bayani za a iya shirya, matsakaici danko MC da HPMC za a iya shirya 5% -10% bayani, da kuma high danko MC da HPMC iya kawai shirya 2% -3% bayani, kuma yawanci Hakanan an ƙaddamar da rarrabuwar danko na ether cellulose tare da 1% -2% bayani.
High-molecular-weight cellulose ether yana da high thickening yadda ya dace, da kuma polymers tare da daban-daban kwayoyin nauyi da daban-daban viscosities a cikin wannan taro bayani.Maƙasudin danko kawai za a iya samu ta hanyar ƙara babban adadin ƙananan nauyin ƙwayoyin cellulose ether.Dankowar sa yana da ɗan dogaro akan ƙimar juzu'i, babban danko ya kai ga dankowar manufa, kuma adadin adadin da ake buƙata yana ƙarami, kuma danko ya dogara da ƙimar girma.Sabili da haka, don cimma wani daidaituwa, dole ne a tabbatar da wani adadin cellulose ether (matsayi na bayani) da kuma danko bayani.Har ila yau, zafin jiki na gel na maganin yana raguwa a layi tare da karuwa da ƙaddamar da maganin, da kuma gels a dakin da zafin jiki bayan kai wani taro.Matsakaicin gelling na HPMC yana da girma sosai a zafin jiki.
Hakanan za'a iya daidaita daidaito ta zabar girman barbashi da zabar ethers cellulose tare da digiri daban-daban na gyare-gyare.Abin da ake kira gyare-gyare shine gabatar da wani mataki na maye gurbin kungiyoyin hydroxyalkyl akan tsarin kwarangwal na MC.Ta hanyar canza dabi'un musanyawa na madogara biyun, wato, DS da MS dangi maye dabi'u na methoxy da hydroxyalkyl waɗanda muke yawan faɗa.Ana iya samun buƙatun ayyuka daban-daban na ether cellulose ta hanyar canza dabi'un maye gurbin dangi na madogara biyu.
High-danko cellulose ether ruwa bayani yana da babban thixotropy, wanda kuma shi ne babban hali na cellulose ether.Maganganun ruwa na polymers na MC yawanci suna da pseudoplastic da ruwa mara-thixotropic a ƙasa da zafin gel ɗin su, amma kaddarorin kwararar Newtonian a ƙananan ƙimar ƙarfi.Pseudoplasticity yana ƙaruwa tare da nauyin kwayoyin halitta ko tattarawar ether cellulose, ba tare da la'akari da nau'in maye gurbin da matakin maye gurbin ba.Saboda haka, cellulose ethers na wannan danko sa, ko da MC, HPMC, HEMC, za su kasance ko da yaushe nuna iri rheological Properties idan dai da taro da kuma zafin jiki suna kiyaye akai.Ana samar da gels na tsari lokacin da zafin jiki ya tashi, kuma ana samun kwararar thixotropic sosai.Babban maida hankali da ƙananan danko cellulose ethers suna nuna thixotropy ko da a ƙasa da zafin jiki na gel.Wannan kadarar tana da matukar fa'ida ga daidaitawa da daidaitawa da sagging a cikin ginin ginin turmi.
Ya kamata a bayyana a nan cewa mafi girma danko na cellulose ether, mafi kyawun riƙewar ruwa, amma mafi girma da danko, mafi girman nauyin kwayoyin halitta na cellulose ether, da kuma raguwa mai dacewa a cikin solubility, wanda yana da mummunan tasiri. a kan turmi maida hankali da aikin yi.Mafi girma da danko, mafi bayyananne sakamako mai kauri akan turmi, amma bai dace ba.Wasu matsakaici da ƙananan danko, amma gyaggyarawa ether cellulose yana da mafi kyawun aiki wajen inganta ƙarfin tsarin jika.Tare da haɓakar danko, riƙewar ruwa na ether cellulose yana inganta.
Lokacin aikawa: Maris 20-2023