Ka'idar aiki na hydroxypropyl methylcellulose a cikin turmi

Hydroxypropyl methylcellulose (HPMC)wani fili ne mai narkewar ruwa mai narkewa a cikin masana'antar gini, musamman a cikin turmi na tushen siminti, turmi mai tushen gypsum da mannen tayal. A matsayin ƙari na turmi, HPMC na iya haɓaka aikin ginin, haɓaka iya aiki, mannewa, riƙe ruwa da juriya na turmi, ta haka yana haɓaka ingancin turmi gabaɗaya.

1. Abubuwan asali na HPMC

HPMC yafi samu ta hanyar etherification gyara na cellulose, kuma yana da kyau ruwa solubility, thickening, film-forming, lubricity da kwanciyar hankali. Muhimman abubuwan da ke cikin jiki sun haɗa da:

Solubility na ruwa: Ana iya narkar da shi a cikin ruwan sanyi ko ruwan zafi don samar da bayani mai haske ko bayyananne.
Tasiri mai kauri: Yana iya ƙara haɓaka danko na bayani sosai kuma yana nuna sakamako mai ƙarfi mai ƙarfi a ƙananan ƙima.
Riƙewar ruwa: HPMC na iya ɗaukar ruwa ya kumbura, kuma yana taka rawa wajen riƙe ruwa a cikin turmi don hana ruwa yin asarar da sauri.
Abubuwan Rheological: Yana da thixotropy mai kyau, wanda ke taimakawa inganta aikin ginin turmi.

2. Babban aikin HPMC a turmi

Matsayin HPMC a cikin turmi yana bayyana musamman ta fuskoki masu zuwa:

2.1 Inganta riƙon ruwa na turmi

A lokacin aikin gina turmi siminti, idan ruwan ya ƙafe da sauri ko kuma tushe ya mamaye shi da yawa, zai haifar da rashin isassun hydration na siminti kuma yana shafar haɓakar ƙarfi. HPMC yana samar da tsarin raga na iri ɗaya a cikin turmi ta hanyar haɓakar ruwa da shayarwar ruwa da ƙarfin faɗaɗawa, yana kulle danshi, yana rage asarar ruwa, ta haka yana faɗaɗa lokacin buɗe turmi da haɓaka daidaitawar gini.

2.2 Tasiri mai kauri, inganta aikin turmi

HPMC yana da sakamako mai kauri mai kyau, wanda zai iya ƙara dankowar turmi, ya sa turmin ya sami mafi kyawun filastik, kuma yana hana turmi daga rarrabuwa, rarrabuwa da zubar jini. A lokaci guda, kauri mai dacewa zai iya inganta ginin turmi, yana sauƙaƙa yin amfani da shi da matakin yayin aikin gini, da haɓaka haɓakar ginin.

2.3 Haɓaka haɗin gwiwa da haɓaka mannewa na turmi

A cikin aikace-aikace irin su tile m, masonry turmi da plaster turmi, haɗin gwiwar turmi yana da mahimmanci. HPMC ta samar da fim ɗin polymer ɗin uniform tsakanin tushe da sutura ta hanyar yin aikin fim, wanda ke inganta ƙarfin haɗin gwiwa na turmi zuwa ma'auni, don haka rage haɗarin fashewar turmi da faɗuwa.

2.4 Inganta aikin ginin kuma rage sag

Don ginin ƙasa a tsaye (kamar gyaran bango ko ginin fale-falen fale-falen fale-falen fale-falen buraka), turmi yana da yuwuwar sag ko zame saboda nauyinsa. HPMC yana ƙara yawan damuwa da kuma anti-sag na turmi, don haka turmi zai iya zama mafi dacewa da saman tushe yayin ginin a tsaye, don haka inganta kwanciyar hankali.

2.5 Haɓaka juriya na tsaga da inganta karko

Turmi yana da saurin fashewa saboda raguwa a lokacin aikin taurin, yana shafar ingancin aikin. HPMC na iya daidaita damuwa na ciki na turmi kuma ya rage yawan raguwa. A lokaci guda, ta hanyar inganta sassaucin turmi, yana da mafi kyawun juriya a ƙarƙashin canjin yanayin zafi ko damuwa na waje, don haka inganta ƙarfin hali.

2.6 Tasiri lokacin saitin turmi

HPMC yana rinjayar lokacin saitin turmi ta hanyar daidaita saurin amsawar siminti. Adadin da ya dace na HPMC zai iya tsawaita lokacin ginin turmi da tabbatar da isasshen lokacin daidaitawa yayin aikin ginin, amma yawan amfani da shi na iya tsawaita lokacin saiti kuma ya shafi ci gaban aikin, don haka yakamata a sarrafa adadin daidai gwargwado.

3. Tasirin sashi na HPMC akan aikin turmi

Adadin HPMC a cikin turmi gabaɗaya ƙasa ne, yawanci tsakanin 0.1% da 0.5%. Ƙayyadaddun ƙayyadaddun ƙayyadaddun ya dogara da nau'in turmi da bukatun gini:

Ƙananan sashi (≤0.1%): Yana iya inganta riƙewar ruwa kuma yana ƙara haɓaka aikin turmi kaɗan, amma tasirin kauri yana da rauni.

Matsakaicin matsakaici (0.1% ~ 0.3%): Yana inganta haɓakar ruwa sosai, mannewa da ƙarfin hana turmi da haɓaka aikin gini.

Babban sashi (≥0.3%): Zai iya ƙara dankowar turmi sosai, amma yana iya shafar ruwa, tsawaita lokacin saiti, kuma ya zama mara daɗi don gini.

A matsayin muhimmin ƙari ga turmi,HPMCyana taka muhimmiyar rawa wajen inganta riƙe ruwa, inganta aikin gine-gine, haɓaka mannewa da juriya. Ƙarin ma'ana na HPMC na iya inganta aikin turmi gaba ɗaya da inganta ingancin aikin. A lokaci guda, ana buƙatar sarrafa sashi don guje wa mummunan tasiri akan saita lokaci da ruwa na gini. A nan gaba, tare da ci gaba da ci gaban masana'antar gini, buƙatun aikace-aikacen HPMC a cikin sabbin kayan ginin kore za su fi girma.