Kayayyakin siminti, kamar siminti, turmi, da sauran kayan gini, ana amfani da su sosai a gine-ginen zamani. Cellulose ethers (irin su hydroxypropyl methylcellulose (HPMC), hydroxyethyl methylcellulose (HEMC), da dai sauransu) su ne muhimman abubuwan da za su iya inganta aikin siminti. Don cimma waɗannan kyawawan kaddarorin, yana da mahimmanci don ƙwarewa da sarrafa aikin ethers cellulose.
1. Abubuwan asali da ayyuka na ethers cellulose
Cellulose ethers wani nau'i ne na abubuwan da aka samo asali na sinadarai na cellulose na halitta, wanda ƙungiyar hydroxyl aka maye gurbinsu da wani rukuni ta hanyar etherification dauki. Ana iya haɗa nau'ikan ethers na cellulose daban-daban bisa ga nau'in da adadin abubuwan maye, kuma kowane nau'in yana da rawar daban a cikin samfuran siminti.
Danko na cellulose ethers:
Danko na cellulose ethers kai tsaye rinjayar rheology da kwanciyar hankali na ciminti manna. High-viscosity cellulose ethers na iya inganta riƙewar ruwa da ƙarfin haɗin kai na manna, amma yana iya rage yawan ruwa. Ƙananan danko ethers cellulose taimaka inganta aiki da ruwa.
Matsayin maye (DS) da maye gurbin molar (MS):
Matsayin sauyawa da maye gurbin molar cellulose ethers yana ƙayyade solubility da danko na maganin. Babban matsayi na maye gurbin da babban canji na molar yawanci na iya inganta riƙewar ruwa da kwanciyar hankali na ethers cellulose.
Solubility na cellulose ethers:
Matsakaicin rushewar da solubility na ethers cellulose yana shafar daidaituwar man siminti. Cellulose ethers tare da mai kyau solubility iya samar da wani uniform bayani da sauri sauri, don haka tabbatar da daidaito da kwanciyar hankali na manna.
2. Zaɓi ethers cellulose masu dacewa
Yanayin aikace-aikacen daban-daban suna da buƙatun aiki daban-daban don ethers cellulose. Zaɓin nau'in daidai da ƙayyadaddun ether na cellulose na iya haɓaka aikin samfuran siminti:
Masu ɗaure:
A cikin aikace-aikace irin su tile adhesives da plaster turmi, high-viscosity cellulose ethers (irin su HPMC) na iya samar da mafi kyawun mannewa da ɗorewa, ta haka inganta aikin gini da ƙarfin haɗin gwiwa na ƙarshe.
Kayayyakin ajiyar ruwa:
A cikin turmi masu daidaita kai da mannen tayal na siminti, ana buƙatar ethers cellulose tare da babban riƙe ruwa (kamar HEMC). Babban riƙe ruwa yana taimakawa hana asarar ruwa da wuri, ta haka yana tabbatar da isassun halayen hydration da tsawon lokacin aiki.
Abubuwan ƙarfafawa:
Cellulose ethers da ake amfani da su don haɓaka ƙarfin samfuran siminti suna buƙatar samun rarrabuwa mai kyau da matsakaicin danko don haɓaka daidaituwa da ƙarfin matrix.
3. Inganta hanyar ƙari
Sarrafa hanyar ƙari na ether cellulose a cikin samfuran siminti yana da mahimmanci don haɓaka tasirin sa. Wadannan hanyoyin ingantawa da yawa ne:
Hanyar ƙaddamarwa:
Mix ether cellulose tare da sauran busassun kayan foda a gaba. Wannan hanya na iya kauce wa samuwar agglomeration na cellulose ether bayan kai tsaye lamba tare da ruwa, game da shi tabbatar da uniform watsawa a cikin slurry.
Hanyar hada ruwa:
Ƙara cellulose ether zuwa siminti slurry sannu a hankali. Wannan hanya ta dace da halin da ake ciki inda ether cellulose ya narke da sauri kuma yana taimakawa wajen samar da tsayayyen dakatarwa.
Hanyar rarrabuwa:
A cikin aiwatar da shirye-shiryen ciminti slurry, ƙara cellulose ether a cikin sassan na iya tabbatar da rarraba kayan sawa a cikin tsarin shirye-shiryen kuma rage haɓakawa.
4. Sarrafa abubuwan waje
Abubuwan waje kamar zafin jiki, ƙimar pH, da ƙimar motsawa suna da tasiri mai mahimmanci akan aikin ether cellulose.
Kula da yanayin zafi:
Solubility da danko na ether cellulose suna da matukar damuwa ga zafin jiki. Yanayin zafi yana taimakawa ether cellulose don narkewa da sauri, amma kuma yana iya haifar da dankowar maganin ya ragu. Ya kamata a daidaita zafin jiki bisa ga takamaiman yanayin aikace-aikacen don tabbatar da ingantaccen aiki da aiki.
Daidaita pH: Ƙimar pH na manna siminti yawanci yana cikin babban alkaline, yayin da solubility da danko na ether cellulose ke canzawa tare da canjin pH. Sarrafa ƙimar pH a cikin kewayon da ya dace zai iya daidaita aikin ether cellulose.
Adadin motsawa: Yawan motsawa yana rinjayar tasirin ether na cellulose a cikin man siminti. Matsakaicin yawan motsa jiki na iya haifar da gabatarwar iska da tarawar ether cellulose, yayin da matsakaicin matsakaicin motsi yana taimakawa wajen rarrabawa da narkar da ether cellulose.
5. Binciken shari'a da shawarwari masu amfani
Ta hanyar bincike na ainihi, za mu iya ƙara fahimtar aikace-aikacen da dabarun ingantawa na ether cellulose a cikin samfuran siminti daban-daban:
Ƙwararren tayal mai girma: Lokacin da kamfani ke samar da kayan aikin tayal mai girma, an gano cewa riƙewar ruwa na samfurin asali bai isa ba, yana haifar da raguwar ƙarfin haɗin gwiwa bayan ginawa. Ta hanyar gabatar da HEMC mai riƙe da ruwa mai girma da kuma daidaita yawan adadinsa da kuma hanyar ƙarawa (ta yin amfani da hanyar ƙaddamarwa), an sami nasarar inganta riƙewar ruwa da haɗin kai na manne tayal.
Kayan bene mai daidaita kai: Kayan bene mai daidaita kai da aka yi amfani da shi a cikin wani aikin yana da ƙarancin ruwa da rashin kwanciyar hankali bayan gini. Ta hanyar zaɓar HPMC mai ƙarancin danko da haɓaka ƙimar motsawa da sarrafa zafin jiki, ana inganta yawan ruwa da aikin ginin slurry, yana sa saman bene na ƙarshe ya fi santsi.
Sarrafa aikin ether cellulose a cikin samfuran siminti shine mabuɗin don haɓaka aikin kayan aiki da ingancin gini. Ta hanyar zaɓar nau'in ether mai kyau na cellulose, inganta hanyar ƙari, da kuma sarrafa abubuwan da ke haifar da tasiri na waje, mahimman kaddarorin siminti irin su riƙe ruwa, mannewa, da ruwa za a iya ingantawa sosai. A cikin aikace-aikacen aikace-aikacen, ya zama dole don ci gaba da haɓakawa da daidaita amfani da ether cellulose bisa ga takamaiman buƙatu da yanayin aikace-aikacen don cimma sakamako mafi kyau.
Lokacin aikawa: Yuni-26-2024