Ka'idar aiki na hydroxypropyl methylcellulose a cikin turmi

Hydroxypropyl methylcellulose (HPMC)wani sinadari ne na polymer mai narkewar ruwa wanda ake amfani da shi sosai a masana'antar gini, musamman a cikin turmi mai tushen siminti, turmi mai tushen gypsum da manne na tayal. A matsayin ƙarin turmi, HPMC na iya inganta aikin gini, inganta aiki, mannewa, riƙe ruwa da juriyar tsagewa na turmi, ta haka yana haɓaka ingancin turmi gabaɗaya.

1. Kayayyakin asali na HPMC

Ana samun HPMC ne galibi ta hanyar gyaran cellulose mai narkewa a cikin ruwa, kuma yana da kyakkyawan narkewar ruwa, kauri, samar da fim, mai danshi da kwanciyar hankali. Muhimman abubuwan da ke cikinsa sun haɗa da:

Narkewar ruwa: Ana iya narke shi a cikin ruwan sanyi ko ruwan zafi don samar da ruwan da ke da ɗanɗano mai haske ko mai haske.
Tasirin kauri: Yana iya ƙara danko na maganin sosai kuma yana nuna kyakkyawan tasirin kauri a ƙananan yawan abu.
Rike ruwa: HPMC na iya shan ruwa da kuma kumbura, kuma yana taka rawa wajen riƙe ruwa a cikin turmi don hana ruwa ya ɓace da sauri.
Properties na rheological: Yana da kyakkyawan thixotropy, wanda ke taimakawa wajen inganta aikin ginin turmi.

2. Babban aikin HPMC a cikin turmi

Matsayin HPMC a cikin turmi ya fi bayyana a cikin waɗannan fannoni:

2.1 Inganta riƙe ruwa na turmi

A lokacin gina turmin siminti, idan ruwan ya ƙafe da sauri ko kuma tushen ya sha fiye da kima, zai haifar da rashin isasshen ruwan siminti kuma yana shafar ci gaban ƙarfi. HPMC yana samar da tsari iri ɗaya na raga a cikin turmin ta hanyar hydrophilicity da ikon sha ruwa da faɗaɗa shi, yana kulle danshi, yana rage asarar ruwa, ta haka yana tsawaita lokacin buɗe turmin da inganta daidaitawar gini.

2.2 Tasirin kauri, inganta iya aiki na turmi

HPMC yana da kyakkyawan tasirin kauri, wanda zai iya ƙara danko na turmi, ya sa turmi ya sami ƙarin laushi, kuma ya hana turmi rarrabawa, rabuwa da zubar ruwa a cikin ruwa. A lokaci guda, kauri mai kyau na iya inganta ginin turmi, yana sauƙaƙa amfani da shi da daidaita shi yayin aikin gini, da kuma inganta ingancin gini.

2.3 Inganta haɗin gwiwa da inganta mannewar turmi

A aikace-aikace kamar manne na tayal, turmi na dutse da turmi na filastik, ƙarfin haɗa turmi yana da matuƙar muhimmanci. HPMC yana samar da fim ɗin polymer iri ɗaya tsakanin tushe da murfin ta hanyar aikin samar da fim, wanda ke inganta ƙarfin haɗa turmi zuwa substrate, ta haka yana rage haɗarin fashewa da faɗuwa turmi.

2.4 Inganta aikin gini da kuma rage faduwar iska

Don gina saman tsaye (kamar shafa bango ko manne tayal), turmi yana iya yin kasa ko zamewa saboda nauyinsa. HPMC yana ƙara yawan amfanin ƙasa da hana sagewar turmi, ta yadda turmi zai iya mannewa da saman tushe yayin ginin tsaye, ta haka ne zai inganta kwanciyar hankali na gini.

2.5 Inganta juriyar tsagewa da kuma inganta juriya

Turmi yana iya samun tsagewa saboda raguwar turmi yayin aikin taurarewa, wanda hakan ke shafar ingancin aikin. HPMC na iya daidaita matsin lamba na ciki na turmi da kuma rage saurin raguwar turmi. A lokaci guda, ta hanyar inganta sassaucin turmi, yana da juriya mafi kyau ga tsagewa a ƙarƙashin canjin yanayin zafi ko matsin lamba na waje, ta haka yana inganta juriya.

2.6 Shafi lokacin saita turmi

HPMC yana shafar lokacin saita turmi ta hanyar daidaita saurin amsawar ruwa na siminti. Yawan HPMC mai dacewa zai iya tsawaita lokacin gina turmi da kuma tabbatar da isasshen lokacin daidaitawa yayin aikin gini, amma amfani da shi fiye da kima na iya tsawaita lokacin saitawa da kuma shafar ci gaban aikin, don haka ya kamata a sarrafa yawan da ake buƙata yadda ya kamata.

3. Tasirin yawan HPMC akan aikin turmi

Yawan HPMC a cikin turmi gabaɗaya yana da ƙasa, yawanci tsakanin 0.1% da 0.5%. Matsakaicin adadin ya dogara da nau'in turmi da buƙatun gini.:

Ƙarancin amfani (≤0.1%): Yana iya inganta riƙe ruwa da kuma ƙara ɗan ƙarfin aiki na turmi, amma tasirin kauri yana da rauni.

Matsakaicin allurai (0.1% ~ 0.3%): Yana inganta riƙe ruwa, mannewa da kuma hana lanƙwasa turmi sosai, kuma yana ƙara aikin gini.

Yawan amfani (≥0.3%): Zai ƙara yawan turmi sosai, amma yana iya shafar ruwa, tsawaita lokacin saitawa, kuma ba zai yi kyau ba wajen gini.

A matsayin wani muhimmin ƙari ga turmi,HPMCYana taka muhimmiyar rawa wajen inganta riƙe ruwa, inganta aikin gini, haɓaka mannewa da juriyar tsagewa. Ƙara HPMC mai kyau zai iya inganta aikin turmi gaba ɗaya da inganta ingancin aikin. A lokaci guda, ana buƙatar a sarrafa yawan da ake buƙata don guje wa mummunan tasiri ga saita lokaci da saurin gini. A nan gaba, tare da ci gaba da haɓaka masana'antar gini, yuwuwar amfani da HPMC a cikin sabbin kayan gini masu kore zai zama mafi faɗi.