A cikin turmi da aka shirya, kawai ɗan ƙaramin ether cellulose zai iya inganta aikin rigar turmi sosai. Ana iya ganin cewa ether cellulose shine babban ƙari wanda ke shafar aikin ginin turmi. Zaɓin ethers cellulose na nau'i daban-daban, nau'i daban-daban, nau'o'in nau'i daban-daban, digiri daban-daban na danko da kuma adadin da aka kara da su kuma suna da tasiri daban-daban akan inganta aikin busassun turmi. A halin yanzu, yawancin masonry da plastering turmi suna da ƙarancin riƙe ruwa. Ruwan slurry zai rabu bayan barin shi shi kaɗai na ƴan mintuna. Sabili da haka, yana da mahimmanci don ƙara ether cellulose zuwa turmi ciminti. Bari mu yi cikakken dubi ayyukan cellulose ether a cikin siminti turmi!
1.Cellulose ether-ruwa riƙewa
Riƙewar ruwa wani muhimmin abu ne na ether cellulose, kuma dukiya ce da yawancin masana'antun bushe-bushe na gida, musamman waɗanda ke yankin kudu tare da yanayin zafi, suna kula da su. A cikin samar da kayan gini, musamman bushe-bushe turmi, ether cellulose yana taka rawar da ba za a iya maye gurbinsa ba, musamman wajen samar da turmi na musamman (turmi da aka gyara), wani abu ne mai mahimmanci kuma mai mahimmanci.
Danko, sashi, zafin yanayi da tsarin kwayoyin halitta na ether cellulose suna da tasiri mai yawa akan aikin rike ruwa. A karkashin yanayi guda, mafi girman danko na ether cellulose, mafi kyawun kiyaye ruwa; mafi girman sashi, mafi kyawun riƙewar ruwa. Yawancin lokaci, ƙaramin adadin ether na cellulose zai iya inganta haɓakar ruwa na turmi sosai. Lokacin da adadin ya kai wani matakin, yanayin haɓaka yawan riƙe ruwa yana raguwa; riƙewar ruwa na ether cellulose yawanci yana raguwa tare da haɓakar zafin jiki na yanayi, amma wasu ethers cellulose da aka gyara kuma suna da kyakkyawar riƙewar ruwa a ƙarƙashin yanayin zafi mai zafi; ethers cellulose tare da ƙananan digiri na maye gurbin suna da kyakkyawan aikin riƙe ruwa.
Ƙungiyoyin hydroxyl a kan ƙwayoyin ether na cellulose da oxygen atom a kan ether bond za su samar da hydrogen bond tare da kwayoyin ruwa, suna juya ruwa kyauta zuwa ruwa mai ɗaure, don haka suna taka muhimmiyar rawa wajen riƙe ruwa; da yaduwar juna tsakanin kwayoyin ruwa da cellulose ether kwayoyin sarƙoƙi damar ruwa kwayoyin shiga cikin ciki na cellulose ether macromolecular sarkar da kuma zama a karkashin karfi da ƙuntatawa, don haka samar da free ruwa da kuma shigar ruwa, game da shi inganta ruwa riƙe da siminti slurry; cellulose ether inganta rheological Properties, porous cibiyar sadarwa tsarin da osmotic matsa lamba na sabo ne ciminti slurry, ko fim-forming Properties na cellulose ether hana yaduwar ruwa.
2.Cellulose ether-thickening da thixotropy
Cellulose ether yana ba wa jigon turmi kyakkyawan danko, wanda zai iya haɓaka ƙarfin haɗin gwiwa tsakanin jika da tushe mai tushe, da haɓaka aikin anti-sag na turmi. Ana amfani dashi ko'ina a cikin plastering turmi, tile bonding turmi da na waje bango tsarin rufi. A thickening sakamako na cellulose ether kuma iya ƙara watsawa juriya da homogeneity na sabo kayan, hana abu delamination, segregation da zub da jini, kuma za a iya amfani da fiber kankare, karkashin ruwa kankare da kai compacting kankare.
Sakamakon kauri na ether cellulose akan kayan tushen siminti ya fito ne daga danko na ether ether cellulose. A karkashin yanayi guda, mafi girman danko na ether cellulose, mafi kyawun danko na kayan da aka gyara na ciminti. Duk da haka, idan danko ya yi yawa, zai shafi ruwa da aiki na kayan (kamar manne da wukar filasta). Turmi-matakin kai da kankare da kanka wanda ke buƙatar babban ruwa yana buƙatar ƙaramin ɗankowar ether cellulose. Bugu da ƙari, tasirin tasirin ethers na cellulose yana ƙara buƙatar ruwa na kayan da aka gina da siminti kuma yana ƙara yawan yawan turmi.
High-danko cellulose ether ruwa bayani yana da babban thixotropy, wanda kuma shi ne babban hali na cellulose ether. Maganganun ruwa na methylcellulose gabaɗaya suna da pseudoplastic, kaddarorin kwararar da ba na thixotropic a ƙasa da zafin gel ɗin su, amma suna nuna kaddarorin kwararar Newtonian a ƙananan ƙimar ƙarfi. Pseudoplasticity yana ƙaruwa tare da karuwa a cikin nauyin kwayoyin halitta ko ƙaddamar da ether cellulose, ba tare da la'akari da nau'i da digiri na maye gurbin wanda zai maye gurbin ba. Don haka, ethers cellulose na darajar danko iri ɗaya, ko MC, HPMC, ko HEMC, koyaushe za su nuna halayen rheological iri ɗaya muddin ana kiyaye maida hankali da zafin jiki akai-akai. Lokacin da yawan zafin jiki ya karu, an kafa gel na tsari kuma babban thixotropic yana faruwa.
Babban taro da ƙananan danko cellulose ethers suna nuna thixotropy ko da a ƙasa da zafin jiki na gel. Wannan kadarar tana da fa'ida sosai wajen daidaita daidaito da kaddarorin ginin turmi yayin gini. Ya kamata a lura a nan cewa mafi girma danko na cellulose ether, mafi kyaun riƙewar ruwa, amma mafi girma da danko, mafi girman nauyin kwayoyin halitta na cellulose ether, kuma solubility yana raguwa daidai da haka, wanda yana da mummunan tasiri a kan. da turmi taro da yi yi.
3.Cellulose ether-air entraining sakamako
Cellulose ether yana da tasiri mai tasiri mai tasiri na iska akan sabbin kayan tushen ciminti. Cellulose ether yana da ƙungiyoyi biyu na hydrophilic (ƙungiyoyin hydroxyl, ƙungiyoyin ether) da ƙungiyoyin hydrophobic (ƙungiyoyin methyl, zoben glucose). Yana da surfactant tare da aikin saman kuma don haka yana da tasirin haɓaka iska. Sakamakon shigar da iska na ether cellulose zai haifar da sakamako na "ball", wanda zai iya inganta aikin aiki na sabbin kayan da aka gauraye, irin su ƙara filastik da santsi na turmi yayin aiki, wanda ke da amfani ga shimfidar turmi; zai kuma kara yawan turmi da rage tsadar turmi; amma zai ƙara porosity na taurare kayan da kuma rage su inji Properties kamar ƙarfi da na roba modulus.
A matsayinsa na surfactant, cellulose ether shima yana da tasirin jika ko mai a jikin siminti, wanda tare da tasirin sa na iska yana ƙara yawan ruwan kayan da ke tushen siminti, amma tasirinsa mai kauri zai rage yawan ruwa. Tasirin ether cellulose akan ruwa na kayan da aka yi da siminti shine haɗuwa da filastik da kuma tasirin sakamako. Gabaɗaya magana, lokacin da adadin ether cellulose ya ragu sosai, galibi yana bayyana azaman filastik ko tasirin rage ruwa; lokacin da adadin ya yi girma, tasirin ƙwayar cellulose ether yana ƙaruwa da sauri, kuma tasirin sa na iska yana kula da jikewa, don haka yana bayyana a matsayin sakamako mai girma ko ƙara yawan buƙatar ruwa.
4.Cellulose ether-retarding sakamako
Cellulose ether zai tsawanta lokacin saitin siminti ko turmi da jinkirta ciminti hydration kuzarin kawo cikas, wanda yake da amfani don ƙara operability lokaci na sabon mix abu da kuma inganta lokaci-dogara asarar turmi daidaito da kankare slump, amma yana iya ma. jinkirta ci gaban ginin.
Lokacin aikawa: Satumba-24-2024