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 shine mallakar 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, yayin da high danko MC da HPMC iya kawai shirya 2% -3% bayani, kuma yawanci rarrabuwar danko na cellulose ether kuma an ƙididdige shi da 1% -2% bayani.
Maɗaukakin nauyin ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta.A cikin bayani guda ɗaya, polymers tare da ma'aunin kwayoyin halitta daban-daban suna da danko daban-daban.Babban digiri.Maƙasudin danko kawai za a iya samu ta ƙara babban adadin ƙananan nauyin kwayar halitta ether.Dankowar sa yana da ɗan dogaro akan ƙimar juzu'i, kuma babban danko ya kai ga ɗanƙoƙin da ake buƙata, kuma adadin da ake buƙata ƙarami ne, kuma danko ya dogara ne akan ingancin kauri.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 wadanda muke yawan fada.Ana iya samun buƙatun ayyuka daban-daban na ether cellulose ta hanyar canza dabi'un maye gurbin dangi na madogara biyu.
Dangantakar da ke tsakanin daidaituwa da gyare-gyare: ƙari na ether cellulose yana rinjayar yawan amfani da ruwa na turmi, canza canjin ruwa da ciminti shine tasirin daɗaɗɗa, mafi girman sashi, mafi girma yawan amfani da ruwa.
Cellulose ethers da aka yi amfani da su a cikin kayan gini na foda dole ne su narke da sauri a cikin ruwan sanyi kuma su samar da daidaito mai dacewa ga tsarin.Idan aka ba shi ƙayyadaddun ƙimar juzu'i, har yanzu yana zama flocculent kuma toshe colloidal, wanda ba shi da inganci ko ingancin samfur.
Har ila yau, akwai kyakkyawar dangantaka ta layi tsakanin daidaituwar simintin siminti da kuma adadin ether cellulose.Cellulose ether na iya ƙara dankowar turmi sosai.Mafi girman sashi, mafi kyawun tasirin sakamako.High-danko cellulose ether ruwa bayani yana da babban thixotropy, wanda kuma shi ne babban hali na cellulose ether.Maganganun ruwa na MC polymers yawanci suna da pseudoplastic da ruwa maras-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 kullum nuna iri rheological Properties idan dai da maida hankali 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 ethers cellulose suna nuna thixotropy ko da a ƙasa da zafin jiki na gel.Wannan kadarar tana da fa'ida mai yawa ga daidaitawar daidaitawa da sagging a cikin ginin ginin turmi.Ya kamata a bayyana a nan cewa mafi girman danko na ether cellulose, 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: Fabrairu-16-2023