Cellulose ether shine abin da aka fi amfani dashi a cikin busassun busassun turmi. Cellulose ether yana taka muhimmiyar rawa a busassun turmi foda. Bayan da ether cellulose a cikin turmi ya narke a cikin ruwa, an tabbatar da tasiri mai tasiri na siminti a cikin tsarin saboda aikin saman. A matsayin colloid mai karewa, cellulose ether "nannade" barbashi masu ƙarfi kuma ya samar da fim mai lubricating a samansa na waje, wanda ya sa tsarin turmi ya fi dacewa kuma yana inganta yawan ruwa da kwanciyar hankali na turmi a yayin aikin haɗuwa. Santsi na gini. Saboda tsarinsa na kwayoyin halitta, maganin cellulose ether yana sa ruwan da ke cikin turmi ba shi da sauƙi a rasa, kuma a hankali ya sake shi na dogon lokaci, yana ba da turmi tare da kyakkyawan ruwa da kuma aiki. Riƙewar ruwa na ether cellulose shine mafi mahimmanci kuma mai nuna alama. Riƙewar ruwan yana nufin adadin ruwan da sabon turmi mai gauraya ya riƙe akan tushe mai sha bayan aikin capillary. Gwajin riƙewar ruwa na ether cellulose a halin yanzu ba shi da hanyoyin gwaji masu dacewa a cikin ƙasar, kuma masana'antun yawanci ba sa samar da sigogi na fasaha, wanda ke kawo rashin jin daɗi ga masu amfani da amfani da ƙima. Dangane da hanyoyin gwaji na wasu samfurori, an taƙaita waɗannan ethers cellulose masu zuwa Hanyar gwaji na riƙe ruwa don tattaunawa.
1. Hanyar yin famfo ruwa
Danshi a cikin slurry bayan tsotsa tacewa
Hanyar tana nufin ma'aunin masana'antu na JC/T517-2005 "Plastering Gypsum", kuma hanyar gwajin tana nufin ainihin ma'aunin Jafananci (JISA6904-1976). A lokacin gwajin, cika mazugi na Buchner tare da turmi gauraye da ruwa, sanya shi a kan kwalabe na tsotsa, fara famfo, sannan tace na tsawon mintuna 20 a ƙarƙashin matsin lamba na (400± 5) mm Hg. Sa'an nan, bisa ga adadin ruwa a cikin slurry kafin da kuma bayan tsotsa tacewa, lissafta adadin ruwa kamar haka.
Riƙewar ruwa (%)=danshi a cikin slurry bayan tsotsa tacewa/danshi a cikin slurry kafin tacewa)KX)
Hanyar vacuum ya fi dacewa wajen auna yawan adadin ruwa, kuma kuskuren yana da ƙananan, amma yana buƙatar kayan aiki da kayan aiki na musamman, kuma zuba jari yana da girma.
2. Tace hanyar takarda
Hanyar takarda tace ita ce yin hukunci akan riƙe ruwa na cellulose ether ta hanyar sha ruwa na takarda tace. Ya ƙunshi ƙirar gwajin zobe na ƙarfe tare da takamaiman tsayi, takarda tace da farantin tallafin gilashi. Akwai nau'ikan takarda 6 na tacewa a ƙarƙashin ƙirar gwajin, Layer na farko yana da sauri takarda tace, sauran yadudduka 5 kuma takarda ce a hankali. Yi amfani da daidaitaccen ma'auni don auna nauyin pallet da 5 yadudduka na jinkirin takarda tace da farko, zuba turmi a cikin samfurin gwaji bayan haɗuwa kuma a goge shi da kyau, kuma bar shi ya tsaya na minti 15; sannan a auna nauyin pallet da 5 yadudduka na jinkirin nauyin takarda tace. An lissafta bisa ga dabara mai zuwa:
M=/S
M — asarar ruwa, g/nm?
nauyin nu_pallet + 5 yadudduka na jinkirin takarda tace; g
m2_ Nauyin pallet + 5 yadudduka na jinkirin takarda tace bayan mintuna 15; g
S_area tasa don gwaji mold?
Hakanan zaka iya lura kai tsaye matakin ɗaukar ruwa na takarda mai tacewa, ƙarancin ɗaukar ruwa na takarda tace, mafi kyawun riƙewar ruwa. Hanyar gwajin tana da sauƙin aiki, kuma kamfanoni na gaba ɗaya na iya saduwa da yanayin gwaji.
3. Hanyar gwajin lokacin bushewar saman:
Wannan hanyar tana iya komawa zuwa GB1728 "Ƙaddarar Lokacin bushewa na Fim ɗin Paint da Fim ɗin Putty", goge turmi da aka zuga akan allon simintin asbestos, da sarrafa kauri a 3mm
Hanyar 1: Hanyar ƙwallon auduga
A hankali sanya ƙwallon auduga mai shayarwa a saman turmi, kuma a tsaka-tsaki na yau da kullun, yi amfani da bakinka don kiyaye ƙwallon audugar inci 10-15 daga ƙwallon audugar, sannan a hankali busa ƙwallon audugar tare da madaidaiciyar hanya. Idan za'a iya busa shi kuma babu wani zaren auduga da ya rage akan turmi, ana ɗaukar saman a bushe, tsawon lokacin tazarar, mafi kyawun riƙewar ruwa.
Hanya na biyu, hanyar taɓa yatsa
A hankali a taɓa saman turmi tare da yatsu masu tsabta a tazara na yau da kullun. Idan yana jin dan kadan, amma babu turmi a kan yatsa, ana iya la'akari da cewa saman ya bushe. Tsawon lokacin tazarar, mafi kyawun riƙewar ruwa.
Hanyoyin da ke sama, hanyar tace takarda da hanyar taɓa yatsa sun fi amfani da su kuma sun fi sauƙi; Masu amfani za su iya yanke hukunci da farko sakamakon riƙewar ruwa na ether cellulose ta hanyoyin da ke sama.
Lokacin aikawa: Fabrairu-14-2023