Adhesive na tushen siminti a halin yanzu shine mafi girman aikace-aikacen turmi mai bushe-bushe na musamman, wanda ya ƙunshi siminti a matsayin babban kayan siminti kuma an ƙara shi ta hanyar tarawa masu daraja, wakilai masu riƙe ruwa, wakilai masu ƙarfi na farko, foda latex da sauran abubuwan da ake buƙata na Organic ko inorganic. cakuda. Gabaɗaya, kawai yana buƙatar a haɗa shi da ruwa lokacin amfani da shi. Idan aka kwatanta da turmi na siminti na yau da kullun, yana iya haɓaka ƙarfin haɗin gwiwa sosai tsakanin kayan da ke fuskantar abu da ma'auni, kuma yana da juriya mai kyau na zamewa da kyakkyawan juriya na ruwa da juriya mai zafi. Kuma abũbuwan amfãni daga daskare-narke sake zagayowar juriya, yafi amfani da su manna gini ciki da kuma na waje bango fale-falen buraka, bene tiles da sauran kayan ado, yadu amfani a ciki da kuma na waje ganuwar, benaye, dakunan wanka, kitchens da sauran gine-gine ado wuraren, shi ne a halin yanzu. mafi yadu amfani yumbu tile bonding abu.
Yawancin lokaci idan muka yi la'akari da aikin mannen tayal, ba wai kawai kula da aikin sa ba da ikon hana zamewa, amma kuma kula da ƙarfin injinsa da lokacin buɗewa. Cellulose ether a cikin tayal m ba kawai yana rinjayar rheological Properties na ain m, kamar santsi aiki, danko wuka, da dai sauransu, amma kuma yana da karfi tasiri a kan inji Properties na tayal m.
1. Lokacin budewa
Lokacin da foda foda da cellulose ether suka kasance a cikin rigar turmi, wasu samfuran bayanan sun nuna cewa foda na roba yana da ƙarfin kuzarin motsa jiki don haɗawa da samfuran hydration na siminti, kuma ether cellulose ya kasance mafi a cikin ruwa mai tsaka-tsaki, wanda ke rinjayar ƙarin turmi danko da lokacin saita lokaci. Tashin hankali na ether na cellulose ya fi girma fiye da na roba foda, kuma ƙarin ether cellulose da aka wadata a kan turmi mai amfani zai zama da amfani ga samuwar hydrogen bond tsakanin tushe surface da cellulose ether.
A cikin rigar turmi, ruwan da ke cikin turmi yana ƙafe, kuma ana wadatar da ether na cellulose a saman, kuma za a samar da fim a saman turmin a cikin minti 5, wanda zai rage yawan fitar da ruwa na gaba, kamar yadda ruwa ya fi yawa. an cire shi daga turmi mai kauri Sashe na shi yana ƙaura zuwa ƙaramin turmi mai ɗanɗano, kuma fim ɗin da aka kafa a farkon ya narkar da wani yanki, kuma ƙaurawar ruwa zai kawo ƙarin haɓakar ether cellulose akan turmi.
Samuwar fim ɗin ether cellulose a saman turmi yana da babban tasiri akan aikin turmi:
1. Fim ɗin da aka kafa yana da bakin ciki sosai kuma za a narkar da shi sau biyu, ba zai iya ƙayyade ƙashin ruwa ba kuma ya rage ƙarfin.
2. Fim ɗin da aka kafa ya yi kauri sosai. Matsakaicin ether cellulose a cikin turmi interstitial ruwa yana da girma kuma danko yana da girma. Ba shi da sauƙi don karya fim ɗin saman lokacin da aka liƙa fale-falen.
Ana iya ganin cewa abubuwan da ke samar da fim na ether cellulose suna da tasiri mafi girma akan lokacin budewa. Nau'in ether cellulose (HPMC, HEMC, MC, da dai sauransu) da kuma digiri na etherification (digiri na maye gurbin) kai tsaye yana shafar abubuwan da ke samar da fim na cellulose ether, da taurin da taurin fim din.
Lokacin aikawa: Dec-26-2022