I ka hoʻokumu ʻana i ka mortar pauka maloʻo, ʻo ka methyl cellulose he haʻahaʻa haʻahaʻa haʻahaʻa, akā he mea hoʻohui koʻikoʻi e 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 hana ana me ka soda caustic, a e hoʻoheheʻe ʻia me kahi mea etherifying.
Nā ʻano o ka Methyl Cellulose Etera
A. ʻO ka Hydroxypropyl methylcellulose (HPMC) ka mea i hana nui ʻia me ka pulupulu hoʻomaʻemaʻe maʻemaʻe maʻemaʻe e like me ka mea maka, kahi i hoʻokaʻawale ʻia ma lalo o nā kūlana alkaline.
B. ʻO ka Hydroxyethyl methyl cellulose (HEMC), kahi ether cellulose non-ionic, he pauka keʻokeʻo, ʻala ʻole a ʻono ʻole.
C？ ʻO ka Hydroxyethylcellulose (HEC) he surfactant non-ionic, keʻokeʻo ke nānā aku, ʻaʻole ʻono a ʻono ʻole a maʻalahi ke kahe ʻana o ka pauka.
ʻO nā mea i luna nei he mau ethers cellulose non-ionic, a me nā ethers cellulose ionic (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 o loko me ka starch i hoʻololi ʻia e like me ke kumu cementing material a me ka pauka Shuangfei e like me ka hoʻohana ʻana o ka mea hoʻopihapiha i ka CMC ma ke ʻano he mānoanoa, akā no ka mea hiki i kēia huahana ke maʻa a ʻaʻole kū i ka wai, ua hoʻopau ʻia ia. e ka makeke . 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 paʻa wai ke pale i ka substrate mai ka lawe ʻana i ka wai me ka wikiwiki a keʻakeʻa i ka hoʻoheheʻe ʻana o ka wai, no laila e hōʻoia i ka lawa ʻana o 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 ka substrate, e komo koke ka substrate maloʻo a me ka porous i ka nui o ka wai mai ka slurry, a ʻo ka papa slurry sima kokoke i ka substrate e nalowale i kona hydration. No laila, ʻaʻole hiki ke hana i kahi gel sima me ka ikaika paʻa ma luna o ka ʻili o ka substrate, akā maʻalahi hoʻi ke kumu 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 ʻana o ka plastering surface i hala, ua hoʻomālu ʻia ka mea kumu i ka wai ma mua, akā ʻo kēia hana he hana ikaika a hoʻopau i ka manawa, a paʻakikī ke ʻano 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 ke kaʻina hana paʻakikī o ka sima, no laila e hoʻolōʻihi i ka manawa hana, no laila hoʻohana ʻia i kekahi manawa ma ke ʻano he mea hoʻonohonoho hoʻonohonoho.
Me ka hoʻomohala ʻana o ka mortar maloʻo, ua lilo ka cellulose ether i mea hoʻohui nui i ka mortar sima. 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.
Pono hoʻi e makaʻala i ka wā e hoʻohana ai:
1. ʻO nā hiʻohiʻona hana o ka mortar i hoʻololi ʻia e pili kokoke ana i ka ulu ʻana o ka viscosity o cellulose ether. ʻOiai ʻo nā huahana me ka viscosity nominal kiʻekiʻe he kiʻekiʻe kiʻekiʻe ka viscosity hope loa, ma muli o ka lohi o ka hemo ʻana, lōʻihi ka manawa e loaʻa ai ka viscosity hope; Eia kekahi, ʻoi aku ka lōʻihi o ka cellulose ether me nā ʻāpana coarser no ka loaʻa ʻana o ka viscosity hope, no laila ʻaʻole pono ka huahana me ka viscosity kiʻekiʻe i nā hiʻohiʻona hana ʻoi aku ka maikaʻi.
2. Ma muli o ka palena o ka degere o ka polymerization o ka cellulose ether maka, ua kaupalena ʻia ka viscosity kiʻekiʻe o ka cellulose ether.
3. Pono e nānā i ke kūʻai ʻana, ka hana hana a me ka nānā ʻana i ka hale hana e pale aku i ka fluctuations maikaʻi.
Ka manawa hoʻouna: Mar-29-2023