Takaitaccen Bayani:An yi nazarin tasirin abubuwan da ke cikin hydroxypropyl methylcellulose ether daban-daban akan halayen turmi mai gauraya na yau da kullun. Sakamakon ya nuna cewa: tare da ƙaruwar abun cikin cellulose ether, daidaito da yawa sun ragu, kuma lokacin saitawa ya ragu. Ƙarfin matsi, 7d da 28d ya ragu, amma an inganta aikin turmi mai gauraya na busasshe.
0. Gabatarwa
A shekarar 2007, ma'aikatu da kwamitocin kasar guda shida sun fitar da "Sanarwa kan Hana Haɗa Turmi a Wurin Aiki a Wasu Birane a Cikin Iyakan Lokaci". A halin yanzu, birane 127 a fadin kasar sun gudanar da aikin "hana turmi da ke akwai", wanda ya kawo ci gaba mara misaltuwa ga ci gaban turmi da busasshe. Damar. Tare da ci gaban turmi da busasshe a kasuwannin gine-gine na cikin gida da na waje, nau'ikan turmi da busasshe iri-iri suma sun shiga wannan masana'antar da ke tasowa, amma wasu kamfanonin samar da turmi da tallace-tallace suna ƙara girman ingancin kayayyakinsu da gangan, suna ɓatar da masana'antar turmi da busasshe. ci gaba mai kyau da tsari. A halin yanzu, kamar kayan haɗin siminti, kayan haɗin turmi da busasshe galibi ana amfani da su a hade, kuma kaɗan ne kawai ake amfani da su kaɗai. Musamman ma, akwai nau'ikan gauraye iri-iri a cikin wasu turmi masu aiki da busassun gauraye, amma a cikin turmi mai busassun gauraye na yau da kullun, babu buƙatar bin diddigin adadin gauraye, amma ya kamata a ƙara mai da hankali kan iyawarsa da kuma iya aiki, don guje wa amfani da gauraye na turmi da yawa, haifar da sharar gida mara amfani, har ma da shafar ingancin aikin. A cikin turmi mai busassun gauraye na yau da kullun, cellulose ether yana taka rawar riƙe ruwa, kauri, da haɓaka aikin gini. Kyakkyawan aikin riƙe ruwa yana tabbatar da cewa turmi mai busassun gauraye ba zai haifar da yashi, foda da raguwar ƙarfi ba saboda ƙarancin ruwa da rashin isasshen ruwa na siminti; tasirin kauri yana ƙara ƙarfin tsarin turmi mai jika sosai. Wannan takarda tana gudanar da bincike mai tsari kan amfani da cellulose ether a cikin turmi mai busassun gauraye na yau da kullun, wanda ke da mahimmanci ga yadda ake amfani da gauraye masu kyau a cikin turmi mai busassun gauraye na yau da kullun.
1. Kayan aiki da hanyoyin da aka yi amfani da su a gwajin
1.1 Kayan da aka yi amfani da su don gwajin
Simintin ya kasance P. 042.5 siminti, tokar ƙuda ta kasance tokar aji na biyu daga wata tashar wutar lantarki a Taiyuan, ƙaramin tarin shine busasshen yashi na kogin da girmansa ya kai mm 5 ko fiye, simintin ya fi kyau shine 2.6, kuma ana samun cellulose ether a kasuwa hydroxypropyl methyl cellulose ether (danko 12000 MPa·s).
1.2 Hanyar gwaji
An gudanar da shirye-shiryen samfura da gwajin aiki bisa ga hanyar gwajin aiki ta asali ta JCJ/T 70-2009 ta gina turmi.
2. Tsarin gwaji
2.1 Tsarin gwajin
A cikin wannan gwajin, ana amfani da adadin kowace kayan da aka yi amfani da su na tan 1 na turmi mai gauraya busasshe a matsayin dabarar asali ta gwajin, kuma ruwan shine yawan ruwan da ake amfani da shi na tan 1 na turmi mai gauraya busasshe.
2.2 Takamaiman tsari
Ta amfani da wannan dabarar, adadin hydroxypropyl methylcellulose ether da aka ƙara a kowace tan na turmi mai gauraya busasshe 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 allurai daban-daban na hydroxypropyl methylcellulose ether akan riƙe ruwa, daidaito, yawan bayyana, lokacin saitawa, da ƙarfin matsi na turmi mai gauraya busasshe na yau da kullun, don jagorantar turmi mai gauraya busasshe. Amfani da cakuda turmi daidai zai iya fahimtar fa'idodin tsarin samar da turmi mai gauraya busasshe, gini mai dacewa, kariyar muhalli da adana kuzari.
3. Sakamakon gwaji da nazari
3.1 Sakamakon gwaji
Tasirin nau'ikan allurai daban-daban na hydroxypropyl methylcellulose ether akan riƙe ruwa, daidaito, yawan da ke bayyane, lokacin saitawa, da ƙarfin matsi na turmi mai busasshe da aka haɗa da filastik.
3.2 Binciken sakamako
Ana iya gani daga tasirin nau'ikan allurai daban-daban na hydroxypropyl methylcellulose ether akan riƙe ruwa, daidaito, yawan da ke bayyane, lokacin saitawa, da ƙarfin matsi na turmi mai gauraye da busasshe. Tare da ƙaruwar yawan cellulose ether, yawan riƙe ruwa na turmi mai jika yana ƙaruwa a hankali, daga 86.2% lokacin da ba a haɗa hydroxypropyl methyl cellulose ba, zuwa 0.6% lokacin da aka haɗa hydroxypropyl methyl cellulose. Yawan riƙe ruwa ya kai 96.3%, wanda ke tabbatar da cewa tasirin riƙe ruwa na propyl methyl cellulose ether yana da kyau sosai; daidaiton yana raguwa a hankali a ƙarƙashin tasirin riƙe ruwa na propyl methyl cellulose ether (cinye ruwa a kowace tan na turmi ba ya canzawa yayin gwajin); Yawan da ke bayyane yana nuna raguwar yanayin, yana nuna cewa tasirin riƙe ruwa na propyl methyl cellulose ether yana ƙara yawan turmi mai jika kuma yana rage yawan; Lokacin saitawa yana tsawaita a hankali tare da ƙaruwar abun ciki na hydroxypropyl methyl cellulose ether, da kuma abun ciki na Lokacin da ya kai 0.4%, har ma ya wuce ƙimar da aka ƙayyade na 8h da aka buƙata ta ƙa'ida, yana nuna cewa amfani da hydroxypropyl methylcellulose ether da ya dace yana da kyakkyawan tasiri akan lokacin aiki na turmi mai jika; ƙarfin matsi na 7d da 28d ya ragu (Gabaɗaya yawan da ake buƙata, raguwar ta fi bayyana). Wannan yana da alaƙa da ƙaruwar adadin turmi da raguwar yawan da ake gani. Ƙarin hydroxypropyl methyl cellulose ether na iya samar da rami a rufe a cikin turmi mai tauri yayin saitawa da taurare turmi. Ƙananan ramuka suna inganta juriyar turmi.
4. Gargaɗi game da amfani da cellulose ether a cikin turmi mai gauraye na yau da kullun
1) Zaɓin samfuran ether na cellulose. Gabaɗaya, girman danko na cellulose ether, mafi kyawun tasirin riƙe ruwa, amma mafi girman danko, ƙarancin narkewarsa, wanda ke cutar da ƙarfi da aikin ginin turmi; ƙarancin cellulose ether yana da ƙarancin a cikin turmi mai gauraye busasshe. Ana cewa mafi ƙarancinsa, mafi sauƙin narkewa. A ƙarƙashin wannan adadin, mafi ƙarancin ingancinsa, mafi kyawun tasirin riƙe ruwa.
2) Zaɓin adadin cellulose ether. Daga sakamakon gwaji da kuma nazarin tasirin abun ciki na cellulose ether akan aikin turmi mai gauraya busasshe, za a iya ganin cewa mafi girman abun ciki na cellulose ether, mafi kyau, dole ne a yi la'akari da shi daga farashin samarwa, ingancin samfur, aikin gini da kuma fannoni huɗu na yanayin gini don zaɓar adadin da ya dace sosai. Yawan hydroxypropyl methyl cellulose ether a cikin turmi mai gauraya busasshe shine mafi kyau 0.1 kg/t-0.3 kg/t, kuma tasirin riƙe ruwa ba zai iya cika buƙatun da aka saba ba idan an ƙara adadin hydroxypropyl methyl cellulose ether a cikin ƙaramin adadin. Haɗarin inganci; adadin hydroxypropyl methyl cellulose ether a cikin turmi mai gauraya na musamman shine kusan 3 kg/t.
3) Aiwatar da cellulose ether a cikin turmi mai gauraye na yau da kullun. A yayin shirya turmi mai gauraye na yau da kullun, ana iya ƙara adadin haɗin da ya dace, zai fi dacewa tare da wani tasirin riƙe ruwa da kauri, don ya samar da tasirin haɗin kai tare da cellulose ether, rage farashin samarwa, da adana albarkatu; idan aka yi amfani da shi kaɗai. Ga cellulose ether, ƙarfin haɗin ba zai iya cika buƙatun ba, kuma ana iya ƙara adadin foda mai latex mai kyau; saboda ƙarancin adadin haɗin turmi, kuskuren aunawa yana da yawa lokacin amfani da shi kaɗai. Ingancin samfuran turmi mai gauraye na busasshe.
5. Kammalawa da shawarwari
1) A cikin turmi na yau da kullun da aka haɗa da busasshen siminti, tare da ƙaruwar abun ciki na hydroxypropyl methylcellulose ether, ƙimar riƙe ruwa zai iya kaiwa kashi 96.3%, daidaito da yawa suna raguwa, kuma lokacin saitawa yana tsawaita. Ƙarfin matsi na 28d ya ragu, amma an inganta aikin turmi na busasshen siminti lokacin da abun ciki na hydroxypropyl methyl cellulose ether ya kasance matsakaici.
2) A yayin shirya turmi mai gauraya da busasshe, ya kamata a zaɓi cellulose ether mai ɗanko da laushi, kuma ya kamata a ƙayyade yawansa ta hanyar gwaje-gwaje. Saboda ƙarancin adadin turmi da aka haɗa, kuskuren aunawa yana da yawa idan aka yi amfani da shi shi kaɗai. Ana ba da shawarar a haɗa shi da mai ɗaukar kaya da farko, sannan a ƙara adadin ƙari don tabbatar da ingancin samfuran turmi da aka haɗa da busasshe.
3) Turmi mai busasshe gauraye masana'antu ne da ke tasowa a China. A yayin da ake amfani da turmi, ba dole ba ne mu bi diddigin adadi, amma mu mai da hankali kan inganci da rage farashin samarwa, mu ƙarfafa amfani da ragowar sharar masana'antu, da kuma cimma nasarar adana makamashi da rage amfani da shi.
Lokacin Saƙo: Fabrairu-22-2023