gabatar
Hydroxypropyl methylcellulose (HPMC) ne mai ruwa mai narkewa cellulose ether wanda aka saba amfani da shi a daban-daban aikace-aikace kamar gini, abinci, Pharmaceuticals da kuma kayan shafawa saboda ta musamman Properties kamar ruwa riƙewa, thickening da kuma film-forming capabilities. Abubuwan riƙe ruwa na HPMC suna da mahimmanci musamman a cikin gini saboda yana taimakawa haɓaka aiki, rage tsagewa da haɓaka aikin tushen siminti. Sabili da haka, daidaitaccen auna ƙarfin riƙe ruwa na HPMC yana da mahimmanci don tabbatar da ingancin samfurin ƙarshe. A cikin wannan labarin, za mu tattauna hanyar gwajin riƙe ruwa na HPMC da mahimmancinsa a cikin masana'antar gine-gine.
Hanyar gwajin riƙe ruwa
Ana auna ƙarfin riƙe ruwa na HPMC ta adadin ruwan da HPMC zata iya riƙe a cikin ƙayyadadden lokaci. Akwai hanyoyi da yawa don gwada riƙewar ruwa na HPMC, hanyar da aka fi amfani da ita ita ce hanyar centrifugation. Hanyar ta ƙunshi manyan matakai guda uku:
Mataki 1: Samfura Shiri
Mataki na farko shine shirya samfurin HPMC. Auna wani adadin foda na HPMC a gaba kuma ƙara wani adadin ruwa don yin slurry. Rabon HPMC zuwa ruwa ya bambanta dangane da takamaiman buƙatun aikace-aikacen da gwaji. Koyaya, rabo gama gari shine 0.5% HPMC zuwa ruwa ta nauyi. Ya kamata a motsa slurry na mintuna da yawa don tabbatar da cewa HPMC ta tarwatse a cikin ruwa daidai gwargwado. Sa'an nan kuma, bari slurry ya zauna na tsawon sa'o'i 12 don tabbatar da cewa ya cika ruwa sosai.
Mataki na 2: Centrifuge
Bayan sa'o'i 12, cire slurry kuma sanya sanannen nauyin slurry a cikin bututun centrifuge. Ana sanya bututun a cikin centrifuge kuma a jujjuya shi a wani takamaiman gudu don ƙayyadadden lokaci. Gudun gudu da tsawon lokaci na centrifugation na iya bambanta dangane da hanyar da aka zaɓa. Gabaɗaya, gudun centrifuge shine 3000rpm kuma lokacin gwaji shine mintuna 30. Koyaya, ma'auni daban-daban na iya buƙatar saurin gudu da tsawon lokaci daban-daban.
Mataki na 3: Lissafin ƙimar riƙe ruwa
Bayan centrifugation, cire bututu kuma raba ruwan daga HPMC. Ana iya ƙididdige ƙimar riƙe ruwa kamar haka:
Ƙimar riƙewar ruwa = [(HPMC + nauyin ruwa kafin centrifugation) - (HPMC + nauyin ruwa bayan centrifugation)] / (HPMC + nauyin ruwa kafin centrifugation) x 100
Ƙimar riƙewar ruwa tana nuna adadin ruwan da HPMC ke riƙe da shi bayan centrifugation.
Muhimmancin gwajin riƙe ruwa a cikin gini
Gwajin riƙe ruwa yana da mahimmanci a cikin masana'antar gine-gine saboda yana taimakawa tabbatar da cewa samfurin ƙarshe yana da daidaito kuma ya dace da ƙayyadaddun buƙatu. Ana yawan amfani da HPMC a cikin kayan da aka dogara da siminti kamar turmi, grout da kankare don inganta aikinsu, rage raguwa da ƙara ƙarfinsu. Abubuwan riƙe ruwa na HPMC suna taka muhimmiyar rawa wajen cimma waɗannan fa'idodin.
Ƙimar ajiyar ruwa na HPMC yana ƙayyade adadin ruwan da za a iya ajiyewa a cikin kayan da aka yi da siminti, wanda ke taimakawa wajen aiki. Kayan siminti tare da ƙimar riƙe ruwa mai girma sun fi dacewa kuma suna da sauƙin haɗuwa da amfani. Bugu da ƙari, kayan da ke da ƙimar riƙe ruwa mai girma suna da ƙananan aljihun iska, wanda ke rage yiwuwar tsagewa kuma yana ƙara yawan ƙarfin kayan.
Bugu da ƙari, ƙimar riƙe ruwa na HPMC alama ce ta ingancin HPMC da aka yi amfani da ita a cikin kayan. HPMC tare da abubuwan riƙewar ruwa da ake buƙata yana tabbatar da aikin dogon lokaci na kayan gini. Sabanin haka, HPMC tare da ƙananan dabi'un riƙe ruwa na iya haifar da rashin isassun kaddarorin gini, rashin haɗin kai da raguwa, a ƙarshe yana haifar da gazawar kayan gini.
a karshe
Gwajin riƙe ruwa shine mabuɗin mahimmanci don tantance ingancin HPMC da ake amfani da shi a masana'antar gini. Wannan gwajin yana taimakawa daidai auna kaddarorin riƙe ruwa na HPMC don tabbatar da ya cika takamaiman buƙatun da aka bayar. HPMC yana da babban riƙon ruwa, yana ba da ingantaccen aiki, ingantaccen haɗin gwiwa, rage tsagewa da ƙara ƙarfi ga kayan siminti. Sabili da haka, a cikin masana'antar gine-gine, ya zama dole don gudanar da gwaje-gwajen riƙe ruwa akan HPMC don tabbatar da ingancin samfurin ƙarshe.
Lokacin aikawa: Satumba 18-2023