ʻO ka mortar i kāwili ʻia me ka pulu, ʻo ia ka sima, ka ʻōpala maikaʻi, ka hui ʻana, ka wai a me nā ʻāpana like ʻole i hoʻoholo ʻia e like me ka hana. Ma muli o kahi ʻāpana i koho ʻia, ma hope o ke ana ʻia a me ke kāwili ʻia ʻana i loko o ke kahua hui ʻana, lawe ʻia i kahi e hoʻohana ʻia ai e kahi kalaka hui, a waiho ʻia i loko o kahi pahu kūikawā. Mālama ʻia ka hui pulu i loko o ka pahu a hoʻohana ʻia i loko o ka manawa i kuhikuhi ʻia.
Hoʻohana ʻia ʻo Hydroxypropyl methylcellulose ma ke ʻano he mea hoʻopaʻa wai a me ka mea hoʻopaneʻe i ka mortar sima e hana i ka mortar hiki ke pamu ʻia. Hoʻohana ʻia ma ke ʻano he mea hoʻopaʻa i ka plaster plastering, hoʻomaikaʻi ia i ka laha ʻana a hoʻolōʻihi i ka manawa hana. ʻO ka hana paʻa wai o ka hydroxypropyl methylcellulose HPMC e pale aku i ka slurry mai ka haki ʻana ma muli o ka maloʻo wikiwiki ma hope o ka hoʻopili ʻana, a hoʻonui i ka ikaika ma hope o ka paʻakikī. ʻO ka paʻa wai kahi hana koʻikoʻi o ka hydroxypropyl methylcellulose HPMC, a he hana nō hoʻi ia e nānā nui ʻia e nā mea hana mortar wet-mix kūloko. ʻO nā mea e pili ana i ka hopena paʻa wai o ka mortar wet-mixed e komo pū me ka nui o ka HPMC i hoʻohui ʻia, ka viscosity o HPMC, ka fineness o nā ʻāpana, a me ka mahana o ke kaiapuni hoʻohana.
ʻO ke kuleana koʻikoʻi o ka hydroxypropyl methylcellulose HPMC i loko o ka mortar wet-mix he ʻekolu mau ʻano nui, ʻo kekahi ka mana paʻa wai maikaʻi loa, ʻo kekahi ka mana ma ke kūlike a me ka thixotropy o ka mortar wet-mix, a ʻo ke kolu ka launa pū ʻana me ka sima. ʻO ka hopena paʻa wai o ka cellulose ether e pili ana i ka omo wai o ka papa kumu, ka haku mele ʻana o ka mortar, ka mānoanoa o ka papa mortar, ke koi wai o ka mortar, a me ka manawa hoʻonohonoho o ka mea hoʻonohonoho. ʻO ke kiʻekiʻe o ka transparency o ka hydroxypropyl methylcellulose, ʻoi aku ka maikaʻi o ka paʻa wai.
ʻO nā mea e pili ana i ka paʻa ʻana o ka wai o ka mortar wet-mix e komo pū me ka viscosity cellulose ether, ka nui o ka hoʻohui, ka fineness o nā ʻāpana a me ka mahana hoʻohana. ʻO ka nui 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 HPMC. No ka huahana like, ʻokoʻa loa nā hopena viscosity i ana ʻia e nā ʻano hana like ʻole, a ʻo kekahi he ʻokoʻa pālua. No laila, i ka hoʻohālikelike ʻana i ka viscosity, pono e hana ʻia 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 a me ke kiʻekiʻe o ke kaumaha molekala o HPMC, ʻo ka emi ʻana o kona solubility e loaʻa ka 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, akā ʻaʻole ia he kūlike pololei. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka viscous o ka mortar pulu, ʻo ia hoʻi, i ka wā o ke kūkulu ʻana, ua hōʻike ʻia ia he pipili i ka scraper a me ka hoʻopili kiʻekiʻe i ka substrate. Akā, ʻaʻole ia he mea kōkua ke hoʻonui i ka ikaika kūkulu o ka mortar pulu ponoʻī. I ka wā o ke kūkulu ʻana, ʻaʻole maopopo ka hana anti-sag. Ma ke ʻano ʻē, ʻo kekahi hydroxypropyl methylcellulose i hoʻololi ʻia me ka viscosity waena a me ka haʻahaʻa he hana maikaʻi loa i ka hoʻomaikaʻi ʻana i ka ikaika kūkulu o ka mortar pulu.
ʻO ka nui o ka cellulose ether HPMC i hoʻohui ʻia i loko o ka mortar pulu-hui, ʻoi aku ka maikaʻi o ka hana paʻa wai, a ʻo ke kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hana paʻa wai. ʻO ka fineness kekahi helu hana koʻikoʻi o ka hydroxypropyl methylcellulose.
Loaʻa i ka maikaʻi o ka hydroxypropyl methylcellulose kahi hopena i kona paʻa ʻana i ka wai. Ma ke ʻano laulā, no ka hydroxypropyl methylcellulose me ka viscosity like akā ʻokoʻa ka maikaʻi, ʻoi aku ka maikaʻi o ka maikaʻi o ka maikaʻi o ka hopena paʻa wai.
I loko o ka mortar pulu-hui, he haʻahaʻa loa ka nui o ka cellulose ether HPMC i hoʻohui ʻia, akā hiki iā ia ke hoʻomaikaʻi nui i ka hana kūkulu o ka mortar pulu-hui, a he mea hoʻohui nui ia e hoʻopilikia i ka hana kūkulu o ka mortar. ʻO ke koho kūpono o ka hydroxypropyl methylcellulose kūpono he mana nui ia i ka hoʻomaikaʻi ʻana i ka hana o ka mortar pulu-hui.
Ka manawa hoʻouna: Malaki-31-2023