ʻO ka cellulose ether he mea nui loa ia i nā morta maloʻo-hui ʻia. No ka mea, he mea paʻa wai koʻikoʻi ia me nā waiwai paʻa wai maikaʻi loa. Hiki i kēia waiwai paʻa wai ke pale i ka wai i loko o ka morta pulu mai ka mahu mua ʻana a i ʻole ke komo ʻia e ka substrate, e hoʻolōʻihi i ka manawa hana o ka morta pulu, e hōʻoia i ka hoʻomaʻū piha ʻia o ka sima, a pēlā e hōʻoia ai i nā waiwai mechanical o ka morta, he mea pono loa ia no ke kūkulu ʻana i nā morta lahilahi (e like me nā morta plastering) a me nā morta i loko o nā substrates omo nui (e like me nā poloka sima aerated), ke kiʻekiʻe o ka mahana a me nā kūlana maloʻo.
Pili loa ka waiwai paʻa wai o ka cellulose i kona viscosity. ʻO ke kiʻekiʻe o ka viscosity o ka cellulose ether, ʻoi aku ka maikaʻi o ka hana paʻa wai. ʻO ka viscosity kahi mea nui o ka hana MC. I kēia manawa, hoʻohana nā mea hana MC like ʻole i nā ʻano hana a me nā mea hana like ʻole e hoʻāʻo ai i ka viscosity o MC, a ʻo nā ʻano hana nui ʻo Haake Rotovisko, Hoppler, Ubbelohde a me Brookfield. No ka huahana like, ʻokoʻa loa nā hopena viscosity i ana ʻia e nā ʻano hana like ʻole, a ʻokoʻa loa kekahi. No laila, i ka hoʻohālikelike ʻana i nā viscosities, he mea nui e hana pēlā ma waena o nā ʻano hoʻāʻo like, me ka mahana, ka rotor, a pēlā aku.
Ma ke ʻano laulā, ʻo ke kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai. Eia nō naʻe, ʻo ke kiʻekiʻe o ka viscosity, ʻoi aku ke kiʻekiʻe o ke kaumaha molekala o MC a me ka emi ʻana o kona solubility, kahi hopena maikaʻi ʻole i ka ikaika a me ka hana kūkulu o ka mortar. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka maopopo o ka hopena mānoanoa ma ka mortar. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka pipili o ka mortar pulu, ma ke kūkulu ʻana, e like me ka mea i hōʻike ʻia e ka scraper sticky a me ke kiʻekiʻe o ka hoʻopili ʻana i ka substrate. Eia naʻe, ʻaʻole ia e kōkua nui i ka hoʻonui ʻana i ka ikaika kūkulu o ka mortar pulu ponoʻī. I ke kūkulu ʻana ʻelua, hōʻike ia ʻaʻole maopopo ka hana anti-sagging. Ma ke ʻano ʻē, ʻo kekahi mau viscosity haʻahaʻa a waena akā ua hoʻololi ʻia nā methyl cellulose ethers he hana maikaʻi loa i ka hoʻomaikaʻi ʻana i ka ikaika kūkulu o ka mortar pulu.
Ka manawa hoʻouna: Malaki-10-2022