Ethers na Cellulose polymers ne na roba da aka yi daga cellulose na halitta kuma an gyara su ta hanyar sinadarai. Cellulose ether wani abu ne da aka samo daga cellulose na halitta. Ba kamar polymers na roba ba, samar da cellulose ether ya dogara ne akan cellulose, kayan aiki mafi sauƙi, mahaɗin polymer na halitta. Saboda takamaiman tsarin cellulose na halitta, cellulose kanta ba ta da ikon amsawa tare da wakilan etherizing. Duk da haka, bayan maganin masu narkewa, haɗin hydrogen mai ƙarfi tsakanin da cikin sarƙoƙin kwayoyin halitta yana lalacewa, kuma ana sakin ayyukan rukunin hydroxyl cikin cellulose na alkali tare da ikon amsawa, kuma bayan amsawar wakilin etherizing, ana canza rukunin OH zuwa rukunin OR don samun cellulose ether.
Kwayoyin Cellulose suna da tasirin shigar iska a fili akan kayan siminti da aka haɗa sabo. Kwayoyin Cellulose suna da ƙungiyoyin hydrophilic (hydroxyl, ether) da hydrophobic (methyl, glucose ring) kuma surfactants ne masu aikin saman kuma don haka suna da tasirin shigar iska. Tasirin shigar iska na cellulose ether zai samar da tasirin "ƙwallo", wanda zai iya inganta aikin aikin sabon abu, kamar ƙara ƙarfin turmi da santsi yayin aiki, wanda ke da amfani ga yaduwar turmi; zai kuma inganta yawan turmi da rage farashin samar da turmi; duk da haka, zai ƙara porosity na kayan da aka taurare kuma ya rage ƙarfinsa da modulus na roba, da sauransu. Abubuwan injiniya.
A matsayin sinadarin surfactant, cellulose ether yana da tasirin jika ko shafawa akan barbashin siminti, wanda tare da tasirin shigarsa cikin iska yana ƙara yawan ruwan kayan siminti, amma tasirin kauri yana rage yawan ruwan, kuma tasirin cellulose ether akan yawan ruwan kayan siminti yana haɗuwa da tasirin plasticization da kauri. Gabaɗaya, idan adadin cellulose ether ya yi ƙasa sosai, galibi yana nuna tasirin plasticization ko rage ruwa; idan adadin ya yi yawa, tasirin kauri na cellulose ether yana ƙaruwa da sauri, kuma tasirin shigarsa cikin iska yana da saurin cikawa, don haka yana nuna tasirin kauri ko ƙara buƙatar ruwa.
Lokacin Saƙo: Afrilu-24-2022