Cellulose ether yana da kyakkyawan tanadin ruwa, wanda zai iya hana danshi a cikin rigar turmi daga ƙafewar da wuri ko kuma a shayar da shi ta hanyar tushe, kuma tabbatar da cewa simintin ya cika ruwa sosai, ta haka ne a ƙarshe ya tabbatar da kayan aikin injin turmi, wanda ke da amfani musamman. zuwa turmi mai bakin ciki da yadudduka masu shayar da ruwa Ko turmi da aka gina a ƙarƙashin yanayin zafi da bushewa. Sakamakon riƙewar ruwa na ether cellulose zai iya canza tsarin gine-gine na gargajiya da kuma inganta ci gaban ginin. Alal misali, ana iya yin aikin plastering a kan abubuwan da ke sha ruwa ba tare da rigar rigar ba.
Danko, sashi, zafin yanayi da tsarin kwayoyin halitta na ether cellulose suna da tasiri mai yawa akan aikin rike ruwa. A karkashin yanayi guda, mafi girman danko na ether cellulose, mafi kyawun kiyaye ruwa; mafi girman sashi, mafi kyawun riƙewar ruwa. Yawancin lokaci, ƙaramin adadin ether cellulose zai iya inganta haɓakar ruwa na turmi sosai. Lokacin da adadin ya kai wani lokaci Lokacin da matakin riƙewar ruwa ya karu, yanayin yanayin riƙewar ruwa yana raguwa; lokacin da yanayin zafi ya tashi, yawan ruwa na ether cellulose yakan ragu, amma wasu ethers cellulose da aka gyara kuma suna da mafi kyawun kiyaye ruwa a ƙarƙashin yanayin zafi mai girma; fibers tare da ƙananan digiri na maye gurbin Vegan ether yana da mafi kyawun aikin riƙe ruwa.
Ƙungiyar hydroxyl a kan kwayoyin cellulose ether da oxygen atom a kan ether bond za su haɗu da kwayoyin ruwa don samar da haɗin hydrogen, juya ruwan kyauta zuwa ruwa mai ɗaure, don haka yana taka muhimmiyar rawa wajen riƙe ruwa; da ruwa kwayoyin da cellulose ether kwayoyin sarkar Interdiffusion damar ruwa kwayoyin shiga cikin ciki na cellulose ether macromolecular sarkar kuma yana ƙarƙashin karfi dauri sojojin, game da shi kafa daure ruwa da kuma entangled ruwa, wanda inganta ruwa riƙe da ciminti slurry; ether cellulose yana inganta sabon siminti slurry. The rheological Properties, porous cibiyar sadarwa tsarin da osmotic matsa lamba ko fim-forming Properties na cellulose ether hana watsa ruwa.
Cellulose ether yana ba da rigar turmi tare da ingantacciyar danko, wanda zai iya haɓaka ikon haɗin kai tsakanin rigar turmi da tushe mai tushe, kuma yana haɓaka aikin rigakafin sagging na turmi. Ana amfani dashi ko'ina a cikin plastering turmi, bulo bonding turmi da waje rufi tsarin. A thickening sakamako na cellulose ether kuma iya ƙara anti-watsawa ikon da homogeneity na freshly gauraye kayan, hana abu delamination, segregation da zub da jini, kuma za a iya amfani da fiber kankare, karkashin ruwa kankare da kai compacting kankare.
Sakamakon kauri na ether cellulose akan kayan tushen siminti ya fito ne daga danko na ether ether cellulose. A karkashin irin wannan yanayin, mafi girman danko na ether cellulose, mafi kyawun danko na kayan da aka gyara na siminti, amma idan danko ya yi yawa, zai shafi ruwa da aiki na kayan (kamar manne wuka mai laushi). ). Turmi mai ɗorewa da kai da kankare, wanda ke buƙatar babban ruwa, yana buƙatar ƙarancin danko na ether cellulose. Bugu da ƙari, tasirin daɗaɗɗen ether na cellulose zai ƙara yawan buƙatar ruwa na kayan da aka gina da siminti da kuma ƙara yawan yawan turmi.
Danko na cellulose ether bayani ya dogara da abubuwan da ke biyowa: nauyin kwayoyin halitta na ether cellulose, maida hankali, zafin jiki, karfin juyi da hanyar gwaji. A karkashin yanayi guda, mafi girman nauyin kwayoyin halitta na cellulose ether, mafi girma da danko na bayani; mafi girman maida hankali, mafi girman danko na maganin. Lokacin amfani da shi, ya kamata a kula da shi don kauce wa yawan adadin kuzari kuma yana tasiri aikin turmi da kankare; cellulose ether Danko na ether bayani zai ragu tare da karuwar yawan zafin jiki, kuma mafi girma da hankali, mafi girman tasirin zafin jiki; Maganin cellulose ether yawanci shine ruwa mai pseudoplastic tare da dukiya na raguwa mai laushi, mafi girma da raguwa a lokacin gwajin , ƙananan danko, saboda haka, haɗin gwiwar turmi zai ragu a ƙarƙashin aikin ƙarfin waje, wanda ke da amfani ga goge ginin turmi, ta yadda turmi zai sami kyakkyawan aiki da haɗin kai a lokaci guda; saboda maganin cellulose ether ba Newtonian bane Don ruwaye, lokacin da hanyoyin gwaji, kayan aiki da kayan aiki ko yanayin gwajin da aka yi amfani da su don gwada danko sun bambanta, sakamakon gwajin na wannan maganin ether cellulose zai bambanta sosai.
Kwayoyin ether na cellulose na iya gyara wasu kwayoyin ruwa na sabon abu a gefen sarkar kwayoyin halitta, don haka ƙara dankon maganin. Sarƙoƙin ƙwayoyin ƙwayoyin cuta na ether cellulose an haɗa su don samar da tsarin cibiyar sadarwa mai girma uku, wanda kuma zai sa maganin sa mai ruwa ya kasance yana da ɗanko mai kyau.
High-danko cellulose ether ruwa bayani yana da high thixotropy, wanda kuma shi ne babban hali na cellulose ether. Maganin ruwa mai ruwa na methyl cellulose yawanci suna da pseudoplastic da kuma ruwan da ba na thixotropic a ƙasa da zafin gel ɗin sa, amma suna nuna 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 taro da kuma yawan 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 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 bayyane tasirin tasiri 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-28-2023