A cikin turmi da aka shirya, adadin ƙarin hydroxypropyl methyl cellulose HPMC yana da ƙasa sosai, amma yana iya inganta aikin turmi mai jika sosai, wanda babban ƙari ne wanda ke shafar aikin ginin turmi. Cellulose ethers masu ɗanɗano daban-daban da ƙarin adadin suna da tasiri mai kyau akan inganta aikin turmi busasshe. A halin yanzu, turmi da yawa na dutse da na filastik ba su da kyawawan halayen riƙe ruwa, kuma rabuwar slurry na ruwa yana faruwa bayan 'yan mintuna na tsayawa cak. Rike ruwa muhimmin aiki ne na methyl cellulose ether, kuma aiki ne da yawancin masana'antun turmi busasshe na gida, musamman waɗanda ke cikin yankunan da yanayin zafi mai yawa a kudu, ke kulawa da su. Abubuwan da ke shafar tasirin riƙe ruwa na turmi busasshe sun haɗa da adadin HPMC da aka ƙara, ɗanɗanon HPMC, ɗanɗanon barbashi da zafin yanayin da ake amfani da shi.
1. Ra'ayi: Cellulose ether wani nau'in polymer ne mai yawan ƙwayoyin halitta wanda aka yi daga cellulose na halitta ta hanyar gyaran sinadarai. Cellulose ether wani abu ne da aka samo daga cellulose na halitta. Samar da cellulose ether ya bambanta da polymers na roba. Mafi mahimmancin kayansa shine cellulose, wani mahaɗin polymer na halitta. Saboda tsarin musamman na cellulose na halitta, cellulose kanta ba ta da ikon yin aiki tare da sinadaran etherifying. Amma bayan an magance sinadarin kumburi, haɗin hydrogen mai ƙarfi tsakanin sarƙoƙin kwayoyin halitta da cikin sarƙoƙin ya lalace, kuma sakin ƙungiyar hydroxyl mai aiki ya koma cellulose mai amsawa. Bayan wakilin etherification ya yi aiki, ƙungiyar -OH ta koma ƙungiyar -OR. Samu cellulose ether. Yanayin cellulose ether ya dogara da nau'in, adadi da rarrabawar abubuwan maye. Rarraba cellulose ethers kuma ya dogara ne akan nau'ikan abubuwan maye, matakin etherification, narkewa da aikace-aikacen da suka shafi. Dangane da nau'in abubuwan maye akan sarkar kwayoyin halitta, ana iya raba shi zuwa monoether da gauraye ether. HPMC da muke amfani da shi yawanci shine gauraye ether. Hydroxypropyl methyl cellulose ether HPMC samfuri ne wanda ake maye gurbin wani ɓangare na rukunin hydroxyl da ke cikin na'urar da rukunin methoxy sannan a maye gurbin ɗayan ɓangaren da rukunin hydroxypropyl. Ana amfani da HPMC galibi a cikin kayan gini, murfin latex, magani, sinadarai na yau da kullun, da sauransu. Ana amfani da shi azaman mai kauri, wakilin riƙe ruwa, mai daidaita, mai wargazawa, da wakilin samar da fim.
2. Rike ruwa na cellulose ether: wajen samar da kayan gini, musamman busasshen turmi, cellulose ether yana taka muhimmiyar rawa, musamman wajen samar da turmi na musamman (turmi da aka gyara), yana da matukar muhimmanci. bangaren. Muhimmin rawar da cellulose ether mai narkewa a cikin turmi yake takawa a fannoni uku. Ɗaya shine kyakkyawan karfin riƙe ruwa, ɗayan kuma shine tasirin daidaito da thixotropy na turmi, na uku kuma shine hulɗa da siminti. Tasirin riƙe ruwa na cellulose ether ya dogara ne akan shan ruwa na layin tushe, abun da ke cikin turmi, kauri na Layer na turmi, buƙatar ruwa na turmi, da lokacin saita kayan coagulation. Rike ruwa na cellulose ether da kansa ya fito ne daga narkewa da bushewar cellulose ether da kanta.
Kauri da kuma girman sinadarin cellulose ether: Matsayi na biyu na kauri sinadarin cellulose ether ya dogara ne akan: matakin polymerization na cellulose ether, yawan sinadarin, zafin jiki da sauran yanayi. Kayayyakin gelation na maganin sune keɓantattun halaye na cellulose na alkyl da abubuwan da aka gyara. Halayen gelation suna da alaƙa da matakin maye gurbin, yawan sinadarin da ƙarin abubuwa.
Kyakkyawan ƙarfin riƙe ruwa yana sa ruwan siminti ya zama cikakke, yana iya inganta danshi na turmi mai jika, yana ƙara ƙarfin haɗin turmi, kuma ana iya daidaita lokacin. Ƙara cellulose ether zuwa turmi mai feshi na injiniya na iya inganta aikin feshi ko famfo na turmi, da kuma ƙarfin tsarin. Saboda haka, ana amfani da cellulose ether sosai a matsayin muhimmin ƙari a cikin turmi mai gauraye.
Lokacin Saƙo: Disamba-16-2021