Hydroxypropyl methylcellulose, wanda aka fi sani da: HPMC ko MHPC. Fuskar fari ce ko fari; babban amfaninta shine a matsayin mai warwatsewa wajen samar da polyvinyl chloride, kuma shine babban wakili mai taimako wajen shirya PVC ta hanyar polymerization na dakatarwa. A tsarin ginin masana'antar gini, ana amfani da shi galibi a cikin gine-gine na injiniya kamar ginin bango, shafa siminti, caulking, da sauransu; musamman a cikin ginin ado, ana amfani da shi don manna tayal ɗin yumbu, marmara, da kayan ado na filastik. Yana da ƙarfin haɗuwa mai yawa kuma yana iya rage adadin siminti. Ana amfani da shi azaman mai kauri a masana'antar fenti, wanda zai iya sa Layer ɗin ya yi haske da laushi, hana cire foda, inganta aikin daidaita shi, da sauransu.
A cikin turmi na siminti da kuma slurry mai tushen gypsum, hydroxypropyl methylcellulose galibi yana taka rawa wajen riƙe ruwa da kauri, wanda zai iya inganta ƙarfin haɗin kai da juriyar sagging na slurry yadda ya kamata.
Abubuwa kamar zafin iska, zafin jiki da saurin matsin iska za su shafi saurin raguwar ruwa a cikin turmi da kayayyakin da aka yi da siminti. Saboda haka, a yanayi daban-daban, akwai wasu bambance-bambance a cikin tasirin riƙe ruwa na samfuran da aka ƙara adadin hydroxypropyl methylcellulose iri ɗaya.
A cikin takamaiman ginin, ana iya daidaita tasirin riƙe ruwa na slurry ta hanyar ƙara ko rage adadin HPMC da aka ƙara. Rike ruwa na methyl cellulose ether a ƙarƙashin yanayin zafi mai yawa muhimmin alama ne don bambanta ingancin methyl cellulose ether.
Kayayyakin jerin hydroxypropyl methylcellulose masu kyau na iya magance matsalar riƙe ruwa yadda ya kamata a lokacin zafi mai yawa. A lokutan zafi mai yawa, musamman a wurare masu zafi da bushewa da kuma gina sirara a gefen rana, ana buƙatar HPMC mai inganci don inganta riƙe ruwa a cikin slurry.
HPMC mai inganci yana da daidaito mai kyau. Rukunin methoxy da hydroxypropoxy ɗinsa suna rarraba daidai gwargwado tare da sarkar ƙwayoyin cellulose, wanda zai iya inganta ikon ƙwayoyin oxygen a kan haɗin hydroxyl da ether don haɗawa da ruwa don samar da haɗin hydrogen. , ta yadda ruwa mai 'yanci zai zama ruwa mai ɗaure, don sarrafa ƙafewar ruwa da yanayin zafi mai yawa ke haifarwa yadda ya kamata, da kuma cimma riƙe ruwa mai yawa.
Ana buƙatar ruwa don samar da ruwa domin a sanya kayan siminti kamar su siminti da gypsum. Daidaiton adadin HPMC zai iya kiyaye danshi a cikin turmi na tsawon lokaci don a ci gaba da saitawa da taurarewa.
Adadin HPMC da ake buƙata don samun isasshen riƙe ruwa ya dogara da:
1. Shakar tushen Layer
2. Haɗaɗɗen turmi
3. Kauri na Layer na Turmi
4. Bukatar ruwa na turmi
5. Lokacin saita kayan gelling
Ana iya watsa sinadarin hydroxypropyl methylcellulose mai inganci cikin turmi da kayayyakin da aka yi da siminti, sannan a naɗe dukkan ƙwayoyin halitta masu ƙarfi, sannan a samar da fim ɗin jika, sannan a saki danshi a hankali a tsawon lokaci, sannan a mayar da martanin hydration tare da kayan gelling marasa tsari don tabbatar da ƙarfin haɗin kai da ƙarfin matsi na kayan.
Saboda haka, a cikin ginin lokacin zafi mai zafi, domin cimma tasirin riƙe ruwa, ya zama dole a ƙara samfuran HPMC masu inganci a cikin isassun yawa bisa ga dabarar, in ba haka ba, za a sami ƙarancin ruwa, raguwar ƙarfi, tsagewa, rami da zubar da ruwa sakamakon bushewar ruwa mai yawa, amma kuma yana ƙara wahalar gini ga ma'aikata. Yayin da zafin jiki ke raguwa, adadin ruwan da aka ƙara na HPMC za a iya rage shi a hankali, kuma ana iya cimma irin wannan tasirin riƙe ruwa.
Lokacin Saƙo: Janairu-16-2023