A cikin 'yan shekarun nan, tare da ci gaba da ci gaba na waje bango thermal rufi fasaha, da ci gaba da ci gaban hydroxypropyl methyl cellulose samar da fasaha, da kuma m halaye na hydroxypropyl methyl cellulose HPMC kanta, hydroxypropyl methyl cellulose HPMC da aka yadu amfani a cikin yi masana'antu.
saita lokaci
Lokacin saita kankare yana da alaƙa da lokacin saita siminti, kuma jimlar ba ta da tasiri kaɗan.Sabili da haka, ana iya amfani da lokacin saitin turmi don maye gurbin bincike kan tasirin HPMC akan saitin lokacin cakuda ruwan da ba na tarwatsewa ba.Tun lokacin da aka saita lokacin turmi ya shafi rabon ciminti na ruwa da rabon ciminti yashi, don kimanta tasirin HPMC akan lokacin saita turmi, dole ne a gyara rabon siminti na ruwa da rabon ciminti yashi na turmi.
Halin gwaji ya nuna cewa ƙari na HPMC yana da tasiri mai tasiri akan cakuda turmi, kuma lokacin saita turmi yana ƙaruwa tare da karuwar adadin cellulose ether HPMC.Tare da adadin HPMC iri ɗaya, lokacin saita turmi da aka kafa a ƙarƙashin ruwa ya fi tsayi fiye da wanda aka samu a cikin iska.Lokacin da aka auna a cikin ruwa, lokacin saitin turmi gauraye da HPMC shine 6 ~ 18h daga baya a saitin farko da 6 ~ 22h daga baya a saitin karshe fiye da na babur.Don haka, yakamata a yi amfani da HPMC tare da wakili mai ƙarfi na farko.
HPMC shine polymer tare da tsarin layi na macromolecular, tare da ƙungiyoyin hydroxyl akan ƙungiyoyi masu aiki, waɗanda zasu iya samar da haɗin gwiwar hydrogen tare da haɗakar da kwayoyin ruwa don ƙara danko na hada ruwa.Dogayen sarƙoƙi na ƙwayoyin cuta na HPMC za su jawo hankalin junansu, suna sa ƙwayoyin HPMC su haɗa juna don samar da tsarin hanyar sadarwa, da nade sumunti da hada ruwa.Kamar yadda HPMC ke samar da tsarin hanyar sadarwa mai kama da fim kuma yana nannade siminti, zai iya yin tasiri yadda ya kamata ya hana jujjuyawar ruwa a cikin turmi kuma ya hana ko rage yawan ruwan siminti.
Jini
Halin zub da jini na turmi yana kama da na kankare, wanda zai haifar da sulhu mai tsanani na aggregates, ƙara yawan simintin ruwa na saman Layer slurry, sa saman Layer slurry ya sami babban shrinkage filastik, ko ma fashe a farkon mataki. kuma ƙarfin slurry surface yana da ɗan rauni.
Lokacin da adadin ya wuce 0.5%, babu ainihin jini.Wannan shi ne saboda a lokacin da HPMC aka cakude a turmi, HPMC yana da fim-forming da reticular tsarin, kazalika da adsorption na hydroxyl a kan dogon sarkar macromolecule, wanda ya sa siminti da hadawa ruwa a turmi form flocculent, tabbatar da barga tsarin na macromolecule. turmi.Lokacin da aka ƙara HPMC zuwa turmi, za a samar da ƙananan kumfa masu zaman kansu da yawa.Za a rarraba waɗannan kumfa daidai gwargwado a cikin turmi kuma su hana tattara tarin.Wannan aikin fasaha na HPMC yana da tasiri mai yawa akan kayan da aka yi da siminti, kuma ana amfani da su sau da yawa don shirya sababbin abubuwan da suka hada da siminti irin su busassun turmi da polymer turmi, don su sami ruwa mai kyau da filastik.
Bukatar ruwa na turmi
Lokacin da adadin HPMC yayi ƙanƙanta, yana da tasiri mai girma akan buƙatun ruwa na turmi.A karkashin yanayin cewa fadada sabon turmi daidai yake, adadin HPMC da buƙatun ruwa na turmi suna canzawa a layi a cikin wani ɗan lokaci, kuma buƙatun ruwa na turmi yana raguwa da farko sannan kuma yana ƙaruwa.Lokacin da abun ciki na HPMC ya kasance ƙasa da 0.025%, tare da haɓakar abun ciki na HPMC, buƙatun ruwa na turmi yana raguwa a ƙarƙashin ƙimar haɓaka iri ɗaya, wanda ke nuna cewa ƙaramin abun cikin HPMC yana rage tasirin turmi.Sakamakon shigar da iska na HPMC ya sa turmi ya sami adadi mai yawa na ƙananan kumfa masu zaman kansu, waɗanda ke taka rawa wajen lubrication da inganta yawan ruwa na turmi.Lokacin da adadin ya fi 0.025%, buƙatun ruwa na turmi yana ƙaruwa tare da karuwar adadin, wanda shine saboda ƙarin amincin tsarin cibiyar sadarwa na HPMC, raguwar rata tsakanin flocs akan sarkar ƙwayoyin cuta mai tsawo, da jan hankali da haɗin kai, da kuma rage yawan ruwa na turmi.Sabili da haka, lokacin da digiri na haɓaka ya kasance daidai, slurry yana nuna karuwar bukatar ruwa.
Lokacin aikawa: Nuwamba-25-2022