Takaitawa:An yi nazarin tasirin daban-daban na abun ciki na hydroxypropyl methylcellulose ether akan kaddarorin talakawa busassun busassun plastering. Sakamakon ya nuna cewa: tare da karuwar abun ciki na ether cellulose, daidaituwa da yawa sun ragu, kuma lokacin saiti ya ragu. Tsawaitawa, 7d da 28d ƙarfin matsawa ya ragu, amma gabaɗayan aikin turmi-busashe an inganta.
0. Gabatarwa
A shekara ta 2007, ma'aikatu da kwamitocin kasar shida sun ba da sanarwar hana hada turmi a wani wurin a wasu garuruwa cikin iyakacin lokaci. A halin yanzu, birane 127 a fadin kasar sun gudanar da aikin "haramta turmi", wanda ya kawo ci gaban da ba a taba ganin irinsa ba ga samar da busassun turmi. damar. Tare da ci gaba da bunƙasa busasshen turmi a kasuwannin gine-gine na cikin gida da na waje, nau'ikan daɗaɗɗen turmi daban-daban su ma sun shiga cikin wannan masana'antar da ta kunno kai, amma da gangan wasu kamfanonin kera turmi da tallace-tallace suka yi karin gishiri ga ingancin kayayyakinsu, suna yaudarar masana'antar busasshiyar turmi. lafiya da ci gaba cikin tsari. A halin yanzu, kamar siminti, busassun gauraye turmi ana amfani da su a hade, kuma kaɗan ne kawai ake amfani da su. A musamman, akwai da dama iri admixtures a wasu aikin bushe-gauraye turmi, amma A talakawa bushe-mixed turmi, babu bukatar a bi da yawan admixtures, amma mafi hankali ya kamata a biya zuwa ga practicability da operability, don kauce wa wuce kima yin amfani da turmi admixtures, haifar da ba dole ba quality sharar gida, da kuma ma tasiri da projecting. A cikin busassun busassun turmi na yau da kullun, ether cellulose yana taka rawar riƙe ruwa, kauri, da haɓaka aikin gini. Kyakkyawan aikin riƙewar ruwa yana tabbatar da cewa turmi mai bushe-bushe ba zai haifar da yashi ba, foda da raguwar ƙarfi saboda ƙarancin ruwa da rashin cikawar siminti; sakamako mai kauri yana haɓaka ƙarfin tsarin tsarin jika. Wannan takarda tana gudanar da bincike mai tsauri akan aikace-aikacen ether na cellulose a cikin turmi mai bushe-bushe na yau da kullun, wanda ke da mahimmancin jagora ga yadda ake amfani da admixtures da kyau a cikin turmi mai bushe-bushe na yau da kullun.
1. Raw kayan da hanyoyin da aka yi amfani da su a cikin gwajin
1.1 Danyen kayan gwajin
Simintin ya kasance P. 042.5 siminti, ash ɗin gardama shine Class II ash daga wata tashar wutar lantarki a Taiyuan, kyakkyawan tarin yashi kogin busasshen yashi mai girman 5 mm ko fiye, ƙimar ingancin 2.6, da ether cellulose na kasuwanci yana samuwa hydroxypropyl methyl cellulose ether (viscosity 12·00000000000 MPa 12 · 0000 MPa).
1.2 Hanyar gwaji
An gudanar da shirye-shiryen samfuri da gwaje-gwajen aiki bisa ga JCJ/T 70-2009 ainihin hanyar gwajin aikin ginin turmi.
2. Tsarin gwaji
2.1 Formula don gwajin
A cikin wannan gwajin, ana amfani da adadin kowane ɗanyen ton 1 na busassun turmi mai gauraya busasshiyar a matsayin ainihin dabarar gwajin, kuma ruwan shine shan ruwan tan 1 na turmi mai busasshen.
2.2 Tsari na musamman
Yin amfani da wannan dabarar, adadin hydroxypropyl methylcellulose ether da aka kara zuwa kowane ton na busassun busassun busassun turmi shine: 0.0 kg / t, 0.1 kg / t, 0.2 kg / t, 0.3 kg / t, 0.4 kg / tt, 0.6 kg / t, don nazarin tasirin tasirin ruwa na ruwa daban-daban na e-hydroxyproseyl ether. daidaito, bayyananne yawa, saitin lokaci, da kuma matsawa ƙarfi na talakawa bushe-mixed plastering turmi, domin ya shiryar da bushe-mixed plastering Daidaitaccen amfani da turmi admixtures iya gaske gane abũbuwan amfãni daga sauki bushe-gauraye turmi samar tsari, m yi, kare muhalli da makamashi ceto.
3. Sakamakon gwaji da bincike
3.1 Sakamakon gwaji
Tasirin nau'ikan allurai daban-daban na hydroxypropyl methylcellulose ether akan riƙon ruwa, daidaito, ƙima mai yawa, lokacin saita lokaci, da ƙarfin matsawa na busassun busassun busassun yumɓu na yau da kullun.
3.2 Nazarin sakamako
Ana iya gani daga tasirin nau'ikan nau'ikan nau'ikan hydroxypropyl methylcellulose ether akan riƙewar ruwa, daidaito, ƙima mai yawa, lokacin saita lokaci, da ƙarfin matsawa na busassun bushe-bushe na yau da kullun. Tare da haɓakar abun ciki na ether cellulose, yawan riƙewar ruwa na turmi mai laushi shima yana ƙaruwa a hankali, daga 86.2% lokacin da hydroxypropyl methyl cellulose ba a haɗe ba, zuwa 0.6% lokacin da hydroxypropyl methyl cellulose ya haɗu. Matsakaicin adadin ruwa ya kai 96.3%, wanda ya tabbatar da cewa tasirin ruwa na propyl methyl cellulose ether yana da kyau sosai; daidaituwa a hankali yana raguwa a ƙarƙashin tasirin riƙewar ruwa na propyl methyl cellulose ether (shafin ruwa a kowace tan na turmi ya kasance baya canzawa yayin gwajin); Ƙimar da ke bayyana yana nuna yanayin ƙasa, yana nuna cewa tasirin ruwa na propyl methyl cellulose ether yana ƙara yawan adadin rigar turmi kuma yana rage yawan; lokacin saitin sannu a hankali yana tsawaita tare da haɓakar abun ciki na hydroxypropyl methyl cellulose ether, da abun ciki na Lokacin da ya kai 0.4%, har ma ya zarce ƙayyadaddun ƙimar 8h da ake buƙata ta ma'auni, yana nuna cewa yin amfani da hydroxypropyl methylcellulose ether da ya dace yana da tasiri mai kyau akan lokacin aiki na turmi; Ƙarfin matsawa na 7d da 28d ya ragu (Mafi girman sashi, mafi ƙaranci raguwa). Wannan yana da alaƙa da haɓakar ƙarar turmi da raguwar ƙarancin gani. Bugu da ƙari na hydroxypropyl methyl cellulose ether zai iya samar da rufaffiyar rami a cikin turmi mai taurin yayin saiti da taurin turmi. Micropores inganta karko na turmi.
4. Kariya ga aikace-aikace na cellulose ether a cikin talakawa bushe-mixed turmi
1) Zaɓin samfuran ether cellulose. Gabaɗaya magana, mafi girman danko na ether cellulose, mafi kyawun tasirin riƙon ruwa, amma mafi girman danko, raguwar narkewar sa, wanda ke cutar da ƙarfi da aikin ginin turmi; fineness na cellulose ether ne in mun gwada da low a busassun gauraye turmi. An ce idan ya fi kyau, zai fi sauƙi narke. A ƙarƙashin wannan sashi, mafi kyawun inganci, mafi kyawun tasirin riƙewar ruwa.
2) Zaɓin adadin ether cellulose. Daga sakamakon gwajin da kuma nazarin sakamakon da abun ciki na cellulose ether a kan yi na bushe-mikad plastering turmi, za a iya gani cewa mafi girma da abun ciki na cellulose ether, da mafi alhẽri, shi dole ne a yi la'akari daga samar da kudin, ingancin samfurin, yi yi da kuma Hudu al'amurran da ginin yanayi zuwa comprehensively zaži dace sashi. Matsakaicin adadin hydroxypropyl methyl cellulose ether a cikin busassun busassun turmi na yau da kullun shine zai fi dacewa 0.1 kg/t-0.3 kg/t, kuma tasirin riƙewar ruwa ba zai iya biyan daidaitattun buƙatun ba idan an ƙara adadin hydroxypropyl methyl cellulose ether a cikin ƙaramin adadin. Hatsarin inganci; Matsakaicin adadin hydroxypropyl methyl cellulose ether a cikin turmi mai jurewa na musamman yana kusan 3 kg/t.
3) Aikace-aikace na cellulose ether a cikin talakawa bushe-mixed turmi. A kan aiwatar da shirya talakawa bushe-mixed turmi, an dace adadin admixture za a iya ƙara, zai fi dacewa tare da wani ruwa riƙewa da thickening sakamako, sabõda haka, zai iya samar da wani hadadden superposition sakamako da cellulose ether, rage samar da farashin, da kuma ajiye albarkatun; idan aka yi amfani da shi kadai Don ether cellulose, ƙarfin haɗin gwiwa ba zai iya cika buƙatun ba, kuma za'a iya ƙara adadin da ya dace na redispersible latex foda; saboda ƙananan ƙwayar turmi, kuskuren auna yana da girma lokacin amfani da shi kadai. Ingancin samfuran busassun gauraye turmi.
5. Kammalawa da shawarwari
1) A cikin talakawa bushe-mixed plastering turmi, tare da karuwa da abun ciki na hydroxypropyl methylcellulose ether, da ruwa rike kudi iya isa 96.3%, da daidaito da kuma yawa an rage, da saitin lokaci ya tsawaita. Ƙarfin matsawa na 28d ya ragu, amma gaba ɗaya aikin busassun busassun turmi ya inganta lokacin da abun ciki na hydroxypropyl methyl cellulose ether ya kasance matsakaici.
2) Yayin da ake shirya turmi mai bushe-bushe na yau da kullum, za a zaɓi ether cellulose tare da danko mai dacewa da fineness, kuma ya kamata a ƙayyade adadinsa ta hanyar gwaje-gwaje. Saboda ƙarancin ƙarar turmi, kuskuren auna yana da girma lokacin amfani da shi kaɗai. Ana ba da shawarar a haxa shi da mai ɗaukar kaya da farko, sannan kuma ƙara adadin ƙari don tabbatar da ingancin samfuran turmi mai bushe.
3) Turmi-busassun busassun masana'antu ne da ke tasowa a kasar Sin. A cikin aiwatar da yin amfani da turmi admixtures, dole ne mu ba makanta biya yawa, amma kula da inganci da rage yawan farashin samar, karfafa yin amfani da masana'antu sharar gida sharar gida, da gaske cimma makamashi ceto da kuma rage amfani.
Lokacin aikawa: Fabrairu-22-2023