A cikin turmi da aka shirya, ƙarin adadin hydroxypropyl methyl cellulose HPMC ya ragu sosai, amma yana iya haɓaka aikin rigar turmi, wanda shine babban ƙari wanda ke shafar aikin ginin turmi. Cellulose ethers tare da danko daban-daban da kuma ƙarin adadin suna da tasiri mai kyau akan inganta aikin busassun turmi. A halin yanzu, yawancin masonry da plastering turmi suna da ƙarancin riƙe ruwa, kuma rabuwar ruwa yana faruwa bayan ƴan mintuna kaɗan na tsayawa. Riƙewar ruwa muhimmin aiki ne na methyl cellulose ether, kuma shi ma wani aiki ne da yawancin masana'antun busassun turmi na gida, musamman waɗanda ke yankunan da ke da yanayin zafi a kudu, suna kula da su. Abubuwan da ke tasiri tasirin riƙewar ruwa na busassun turmi sun haɗa da adadin HPMC da aka ƙara, dankowar HPMC, kyawun ƙwayoyin cuta da yanayin yanayin da ake amfani da su.
1. Concept: Cellulose ether ne roba high kwayoyin polymer sanya daga halitta cellulose ta hanyar sinadaran gyara. Cellulose ether wani abu ne na cellulose na halitta. Samar da ether cellulose ya bambanta da polymers na roba. Mafi mahimmancin kayan sa shine cellulose, fili na polymer na halitta. Saboda tsari na musamman na cellulose na halitta, cellulose kanta ba ta da ikon amsawa tare da etherifying jamiái. Amma bayan an kula da wakili mai kumburi, haɗin gwiwar hydrogen mai ƙarfi tsakanin sassan kwayoyin halitta da kuma cikin sarkar ya lalace, kuma sakin aiki na ƙungiyar hydroxyl ya juya ya zama alkali cellulose mai amsawa. Bayan wakilin etherification ya amsa, an canza ƙungiyar -OH zuwa ƙungiyar -OR. Samun cellulose ether. Halin ether cellulose ya dogara da nau'in, yawa da rarraba abubuwan maye gurbin. Rarraba ethers cellulose kuma yana dogara ne akan nau'ikan masu maye gurbin, matakin etherification, solubility da aikace-aikace masu alaƙa. Dangane da nau'in maye gurbin akan sarkar kwayoyin halitta, ana iya raba shi zuwa monoether da ether mai gauraye. HPMC da muke amfani da ita shine gauraye ether. Hydroxypropyl methyl cellulose ether HPMC samfur ne wanda a cikin sashe na ƙungiyar hydroxyl akan naúrar aka maye gurbinsu da ƙungiyar methoxy sannan ɗayan kuma ana maye gurbinsa da ƙungiyar hydroxypropyl. Ana amfani da HPMC galibi a cikin kayan gini, kayan kwalliyar latex, magani, sunadarai na yau da kullun, da sauransu. Ana amfani da shi azaman mai kauri, wakili mai riƙe ruwa, stabilizer, dispersant, da wakili na ƙirƙirar fim.
2.Water retention of cellulose ether: a cikin samar da kayan gini, musamman busassun turmi, cellulose ether yana taka rawar da ba za a iya maye gurbinsa ba, musamman wajen samar da turmi na musamman (turmi da aka gyara), ba dole ba ne. bangaren. Muhimmin rawar cellulose ether mai narkewa da ruwa a cikin turmi shine yafi ta fuskoki uku. Ɗayan yana da kyakkyawan ƙarfin riƙe ruwa, ɗayan shine tasiri akan daidaito da thixotropy na turmi, kuma na uku shine hulɗar da ciminti. Tasirin riƙewar ruwa na ether cellulose ya dogara ne akan shayar da ruwa na tushen tushe, abun da ke cikin turmi, kauri na turmi, buƙatar ruwa na turmi, da lokacin saita lokacin kayan haɗin gwiwa. Riƙewar ruwa na ether cellulose kanta ya fito ne daga solubility da dehydration na ether cellulose kanta.
da thickening da thixotropy na cellulose ether: Matsayi na biyu na cellulose ether-thickening ya dogara da: mataki na polymerization na cellulose ether, bayani maida hankali, zafin jiki da kuma sauran yanayi. Abubuwan gelation na maganin sune kaddarorin musamman na alkyl cellulose da abubuwan da aka gyara. Halayen Gelation suna da alaƙa da matakin maye gurbin, ƙaddamarwar bayani da ƙari.
Kyakkyawan ƙarfin riƙewar ruwa yana sa simintin hydration ya zama cikakke, zai iya inganta rigar tackiness na rigar turmi, ƙara ƙarfin haɗin gwiwa na turmi, kuma za'a iya daidaita lokacin. Ƙarin ether na cellulose zuwa turmi mai fesa inji na iya inganta aikin feshi ko yin famfo na turmi, da kuma ƙarfin tsarin. Sabili da haka, ana amfani da ether cellulose a ko'ina azaman ƙari mai mahimmanci a cikin turmi da aka shirya.
Lokacin aikawa: Dec-16-2021