Ka Hoʻohana ʻana o ka Cellulose Ether

I loko o ka hoʻohui ʻana o ka mortar pauka maloʻo,ʻEtera celluloseHe mea hoʻohui koʻikoʻi me ka nui haʻahaʻa o ka hoʻohui ʻana, akā hiki iā ia ke hoʻomaikaʻi nui i ka hui ʻana a me ka hana kūkulu ʻana o ka mortar. I ka ʻōlelo maʻalahi, ʻaneʻane nā waiwai hui pulu o ka mortar i ʻike ʻia me ka maka ʻōlohelohe i hāʻawi ʻia e ka cellulose ether. He derivative cellulose ia i loaʻa ma ka hoʻohana ʻana i ka cellulose mai ka lāʻau a me ka pulupulu, e hana ana me ka soda caustic, a laila etherifying me kahi mea etherifying.

Nā ʻano o nā ethers cellulose

A. ʻO ka Hydroxypropyl methyl cellulose (HPMC), i hana nui ʻia me ka pulupulu i hoʻomaʻemaʻe ʻia me ka maʻemaʻe kiʻekiʻe ma ke ʻano he mea maka, ua etherified kūikawā ʻia ma lalo o nā kūlana alkaline.
B. ʻO ka Hydroxyethyl methylcellulose (HEMC), he ʻetera cellulose non-ionic, he pauka keʻokeʻo ke nānā aku, ʻala ʻole a ʻono ʻole.
C. ʻO ka Hydroxyethyl cellulose (HEC), he surfactant non-ionic, keʻokeʻo ke ʻano, ʻaʻohe ʻala, ʻono ʻole a me ka pauka kahe maʻalahi.

ʻO nā mea i luna aʻe nei, he mau ʻetera cellulose non-ionic, a me nā ʻetera cellulose ionic (e like me ka carboxymethyl cellulose CMC).

I ka wā e hoʻohana ʻia ai 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 sima. Ma kekahi mau wahi ma Kina, hoʻohana kekahi mau putties paia o loko me ka starch i hoʻololi ʻia e like me ka mea sima nui a me ka pauka Shuangfei e like me ka mea hoʻopihapiha iā CMC ma ke ʻano he thickener. Eia nō naʻe, no ka mea, he maʻalahi kēia huahana i ka mildew a ʻaʻole kūpaʻa i ka wai, ua hoʻopau mālie 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 paʻa wai a me ka thickener i nā mea hana sima

ʻO kāna hana paʻa wai e hiki ke pale i ka substrate mai ka omo ʻana i ka wai nui a keakea i ka mahu ʻana o ka wai, i mea e hōʻoia ai i ka lawa ʻana o ka wai o ka sima ke hoʻomaʻū ʻia. E lawe i ka hana plastering ma ke ʻano he laʻana. Ke hoʻopili ʻia ka slurry sima maʻamau i ka ʻili kumu, e omo 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 ka ʻili o ka substrate, akā he maʻalahi hoʻi ia i ka warping a me ka seepage wai, i maʻalahi ai ka hāʻule ʻana o ka papa slurry sima ʻili. Ke lahilahi ka grout i hoʻopili ʻia, he maʻalahi hoʻi ke hana i nā māwae i loko o ka grout holoʻokoʻa. No laila, i ka hana plastering ʻili ma mua, hoʻohana pinepine ʻia ka wai e hoʻomaʻū mua i ka substrate, akā ʻaʻole wale kēia hana he hana nui a he manawa lōʻihi, akā he paʻakikī hoʻi ke kaohi i ka maikaʻi o ka hana.

Ma keʻano laulā, piʻi ka paʻa ʻana o ka wai o ka slurry sima me ka piʻi ʻana o ka nui 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, hoʻopilikia pū ka cellulose ether i nā waiwai ʻē aʻe o ka sima sima, e like me ka hoʻopaneʻe ʻana, ka hoʻopaʻa ʻana i ka ea, a me ka hoʻonui ʻana i ka ikaika o ka hoʻopaʻa ʻana. Hoʻolohi ka Cellulose ether i ke kaʻina hana hoʻonohonoho a me ka paʻakikī o ka sima, a pēlā e hoʻolōʻihi ai i ka manawa hana. No laila, hoʻohana ʻia i kekahi manawa ma ke ʻano he coagulant.

Me ka hoʻomohala ʻana o ka mortar maloʻo-hui ʻia,ʻEtera celluloseua lilo i mea hoʻohuihui sima koʻikoʻi. Eia nō naʻe, he nui nā ʻano a me nā kikoʻī o ka cellulose ether, a ke loli mau nei ka maikaʻi ma waena o nā ʻāpana.