Cellulose Etera- Ka mānoanoa a me ka Thixotropy
Cellulose eterahāʻawi i ka mortar pulu me ka viscosity maikaʻi loa, hiki ke hoʻonui nui i ka adhesion ma waena o ka mortar pulu a me ka papa kumu, hoʻomaikaʻi i ka hana anti kahe o ka mortar, a hoʻohana nui ʻia i ka plastering mortar, ceramic tile hoʻopaʻa mortar, a me ka ʻōnaehana pale o waho. ʻO ka hopena mānoanoa o ka cellulose ether hiki ke hoʻonui i ka hiki ke hoʻopuehu anti a me ke kūlike o nā mea hou, a pale i ka stratification waiwai, kaʻawale, a me ka seepage. Hiki ke hoʻohana ʻia no ke kaila i hoʻopaʻa ʻia i ka fiber, ka lāʻau i lalo o ka wai, a me ke kaila paʻa ponoʻī.
Ka hopena mānoanoa ocellulose eterama luna o nā mea sima mai ka viscosity o ka solution cellulose ether. Ma lalo o nā kūlana like, ʻoi aku ka kiʻekiʻe o ka viscosity ocellulose etera, ʻoi aku ka maikaʻi o ka viscosity o nā mea i hoʻololi ʻia i ka sima. Eia naʻe, inā kiʻekiʻe loa ka viscosity, e hoʻopilikia ia i ka kahe a me ka hana o ka mea (e like me ka pahi plastering). Pono e hoʻohaʻahaʻa ʻia ka paʻakai paʻa ponoʻī, ka paʻa paʻa ponoʻī, a pēlā aku. Eia kekahi, ʻo ka hopena mānoanoa o ka cellulose ether e hoʻonui i ka koi wai o ka substrate cement a hoʻonui i ka hana ʻana o ka mortar.
He thixotropy kiʻekiʻe ka hopena wai o ka cellulose ether viscosity kiʻekiʻe, ʻo ia hoʻi kahi ʻano o ka cellulose ether. He pseudoplastic a me non thixotropic ka wai kahe o ka wai o ka methyl cellulose ma lalo o kona wela gel, akā e hōʻike ana i ke kahe o Newtonian ma ka ʻili haʻahaʻa. Ma waho o ke ʻano a me ke ʻano o ka hoʻololi ʻana o nā substituents, piʻi ka pseudoplasticity me ka piʻi ʻana o ka paona molekala a i ʻole ka pae o ka cellulose ether. No laila, ʻoiai ka lōʻihi o ka hoʻopaʻa ʻana a me ka mahana e mau ana, nā cellulose ethers me ka pae viscosity like (me ka ʻole o ka MC,HPMC, HEMC) hōʻike mau i nā waiwai rheological like. Ke piʻi ka mahana, hana ʻia ka gel structural a hele mai ke kahe thixotropic kiʻekiʻe.
Cellulose eterahaʻi aku nā mea hana iā ʻoe ʻo ka cellulose ether me ke kiʻekiʻe kiʻekiʻe a me ka viscosity haʻahaʻa he thixotropy ma lalo o ka mahana gel. He mea maikaʻi loa kēia waiwai no ke kūkulu ʻana i ka mortar e hoʻoponopono i kona pae ʻana a me ka sagging. Pono e hoʻomaopopo i ka kiʻekiʻe o ka viscosity ocellulose etera, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai. Eia naʻe, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka kiʻekiʻe o ke kaumaha molecular pili o cellulose ether, a me ka emi ʻana o kona solubility. He hopena maikaʻi ʻole ia i ka noʻonoʻo ʻana a me ka hana o ka mortar.
Cellulose Etera- Hoʻopaneʻe
Cellulose eterahiki ke hoʻolōʻihi i ka manawa hoʻonohonoho o ka slurry sima a i ʻole ka mortar, e hoʻopaneʻe i nā kinetics hydration o ka sima, a hoʻomaikaʻi i ke ola lawelawe o nā mea hou, a laila e hoʻomaikaʻi ai i ke kūlike o ka slump ma waena o ka mortar a me ka pā. ʻO ke kiʻekiʻe o ka nalowale i ka manawa, akā hiki ke hoʻopaneʻe i ka holomua o ke kūkulu ʻana.
Ka manawa hoʻouna: ʻAukake-25-2023