I ka hoʻohui ʻana o ka pauka maloʻo maloʻo,cellulose eteraHe mea hoʻohui koʻikoʻi me ka haʻahaʻa haʻahaʻa o ka hoʻohui, akā hiki ke hoʻomaikaʻi nui i ka hui ʻana a me ka hana ʻana o ka mortar. ʻO ka maʻalahi, kokoke i nā waiwai hui ʻana o ka mortar i ʻike ʻia me ka maka ʻōlohelohe e hāʻawi ʻia e cellulose ether. He mea ia he cellulose derivative i loaʻa ma ka hoʻohana ʻana i ka cellulose mai ka lāʻau a me ka pulupulu, e pane ana me ka soda caustic, a laila e hoʻoheheʻe ʻia me kahi mea etherifying.
Nā ʻano o ka cellulose ethers
A. Hydroxypropyl methyl cellulose (HPMC), ka mea i hana nui ʻia me ka pulupulu hoʻomaʻemaʻe hoʻomaʻemaʻe kiʻekiʻe e like me ka mea maka, ua hoʻokaʻawale ʻia ma lalo o nā kūlana alkaline.
B. Hydroxyethyl methylcellulose (HEMC), he cellulose ether non-ionic, he pauda keʻokeʻo i ka nānā aku, ʻaʻohe ʻala a ʻono ʻole.
C. Hydroxyethyl cellulose (HEC), he surfactant non-ionic, keʻokeʻo ma ke ʻano, ʻaʻohe ʻala, ʻono ʻole a maʻalahi ke kahe ʻana o ka pauka.
ʻO nā mea i luna nei he non-ionic cellulose ethers, a me ka ionic cellulose ethers (e like me carboxymethyl cellulose CMC).
I ka wā o ka hoʻohana ʻana i ka mortar pauka maloʻo, no ka mea ʻaʻole paʻa ka ionic cellulose (CMC) i ke alo o nā ion calcium, ʻaʻole i hoʻohana pinepine ʻia i nā ʻōnaehana gelling inorganic me ka sima a me ka lime slaked e like me nā mea cementing. Ma kekahi mau wahi ma Kina, Hoʻohana ʻia kekahi mau putties pā o loko me ka starch i hoʻololi ʻia e like me ka mea nui cementing a me ka pauka Shuangfei e like me ka hoʻohana ʻana i ka CMC ma ke ʻano he mānoanoa. Eia nō naʻe, no ka mea hiki i kēia huahana ke maʻa a ʻaʻole kū i ka wai, ua hoʻopau ʻia e ka mākeke. I kēia manawa, ʻo ka cellulose ether i hoʻohana nui ʻia ma Kina ʻo HPMC.
Hoʻohana nui ʻia ka cellulose ether ma ke ʻano he mea mālama wai a me ka mānoanoa i nā mea sima
Hiki i kāna hana hoʻopaʻa wai ke pale i ka substrate mai ka lawe ʻana i ka wai nui a keʻakeʻa i ka hoʻoheheʻe ʻana o ka wai, no laila e hōʻoia i ka lawa ʻana o ka wai i ka wai i ka wā e hydrated. E lawe i ka hana plastering i laʻana. Ke hoʻopili ʻia ka slurry sima maʻamau i ka ʻili o ke kumu, e hoʻopili koke ka substrate maloʻo a porous i ka nui o ka wai mai ka slurry, a ʻo ka papa slurry sima kokoke i ka papa kumu e nalowale maʻalahi ka wai e pono ai no ka hydration. , No laila ʻaʻole hiki ke hana i kahi gel sima me ka ikaika hoʻopaʻa ma luna o ka ʻili o ka substrate, akā hiki nō hoʻi i ka warping a me ka seepage wai, i maʻalahi ka hāʻule ʻana o ka papa slurry ciment. I ka lahilahi o ka grout, ua maʻalahi hoʻi e hana i nā māwae i loko o ka grout holoʻokoʻa. No laila, i ka hana plastering surface i hala, hoʻohana pinepine ʻia ka wai e hoʻomaʻemaʻe i ka substrate ma mua, akā ʻaʻole kēia hana wale nō ka hana ikaika a me ka manawa, akā paʻakikī hoʻi ka maikaʻi o ka hana.
Ma ka ʻōlelo maʻamau, piʻi ka paʻa ʻana o ka wai o ka slurry cement me ka hoʻonui ʻana o ka ʻike o ka cellulose ether. ʻO ka nui o ka viscosity o ka cellulose ether i hoʻohui ʻia, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai.
Ma waho aʻe o ka paʻa ʻana o ka wai a me ka mānoanoa, pili pū ka cellulose ether i nā waiwai ʻē aʻe o ka mortar sima, e like me ka retarding, entraining ea, a me ka hoʻonui ʻana i ka ikaika pili. Hoʻolohi ka cellulose ether i ka hoʻonohonoho ʻana a me ka paʻakikī o ka sima, no laila e hoʻolōʻihi i ka manawa hana. No laila, hoʻohana ʻia i kekahi manawa he coagulant.
Me ka hoʻomohala ʻana o ka mortar maloʻo,cellulose eteraua lilo i mea hoʻohui ʻia i ka mea hoʻoheheʻe sima koʻikoʻi. Eia nō naʻe, nui nā ʻano a me nā kikoʻī o ka cellulose ether, a ke loli mau nei ka maikaʻi ma waena o nā pūʻulu.
Ka manawa hoʻouna: Apr-25-2024