I loko o ka mortar i kāwili mua ʻia, hiki i kahi liʻiliʻi o ka cellulose ether ke hoʻomaikaʻi nui i ka hana o ka mortar pulu. Hiki ke ʻike ʻia he mea hoʻohui nui ka cellulose ether e hoʻopilikia i ka hana kūkulu o ka mortar. ʻO ke koho ʻana i nā cellulose ethers o nā ʻano like ʻole, nā viscosities like ʻole, nā nui ʻāpana like ʻole, nā kekelē viscosity like ʻole a me nā nui i hoʻohui ʻia he hopena like ʻole hoʻi i ka hoʻomaikaʻi ʻana i ka hana o ka mortar maloʻo. I kēia manawa, he nui nā mortar masonry a me plastering he mau waiwai paʻa wai maikaʻi ʻole. E hoʻokaʻawale ka slurry wai ma hope o ka waiho ʻana no kekahi mau minuke. No laila, he mea nui loa ka hoʻohui ʻana i ka cellulose ether i ka mortar sima. E nānā pono kākou i nā hana o ka cellulose ether i loko o ka mortar sima!
1.Ka paʻa ʻana o ka wai cellulose ether
ʻO ka paʻa ʻana o ka wai kahi waiwai koʻikoʻi o ka cellulose ether, a he waiwai nō hoʻi ia e nānā nui ʻia e nā mea hana mortar maloʻo kūloko, ʻoiai ka poʻe ma ka ʻāina hema me nā mahana kiʻekiʻe. I ka hana ʻana i nā mea kūkulu hale, ʻoiai ka mortar maloʻo, he kuleana koʻikoʻi ko ka cellulose ether, ʻoiai i ka hana ʻana i ka mortar kūikawā (moltar i hoʻololi ʻia), he ʻāpana koʻikoʻi a koʻikoʻi ia.
ʻO ka viscosity, ka dosage, ka mahana ambient a me ke ʻano molekala o ka cellulose ether he mana nui ia i kāna hana paʻa wai. Ma lalo o nā kūlana like, ʻo ka nui o ka viscosity o ka cellulose ether, ʻoi aku ka maikaʻi o ka paʻa wai; ʻo ke kiʻekiʻe o ka dosage, ʻoi aku ka maikaʻi o ka paʻa wai. ʻO ka maʻamau, hiki i kahi liʻiliʻi o ka cellulose ether ke hoʻomaikaʻi nui i ka nui o ka paʻa wai o ka mortar. Ke hiki ka dosage i kahi pae, lohi ke ʻano o ka hoʻonui ʻana i ka nui o ka paʻa wai; ʻo ka paʻa wai o ka cellulose ether e emi pinepine ana me ka piʻi ʻana o ka mahana ambient, akā ʻo kekahi mau cellulose ethers i hoʻololi ʻia he paʻa wai maikaʻi ma lalo o nā kūlana wela kiʻekiʻe; ʻoi aku ka maikaʻi o ka hana paʻa wai o nā cellulose ethers me ke kekelē pani haʻahaʻa.
ʻO nā hui hydroxyl ma nā molekala cellulose ether a me nā ʻātoma oxygen ma nā pilina ether e hana i nā pilina hydrogen me nā molekala wai, e hoʻohuli i ka wai manuahi i wai paʻa, no laila e pāʻani ana i kahi kuleana maikaʻi i ka paʻa ʻana o ka wai; ʻo ka hoʻolaha like ʻana ma waena o nā molekala wai a me nā kaulahao molekala cellulose ether e ʻae i nā molekala wai e komo i loko o ke kaulahao macromolecular cellulose ether a e kau ʻia i nā palena ikaika, no laila e hana ana i ka wai manuahi a me ka wai i hoʻopili ʻia, no laila e hoʻomaikaʻi ana i ka paʻa ʻana o ka wai o ka slurry sima; hoʻomaikaʻi ka cellulose ether i nā waiwai rheological, ka hoʻonohonoho pūnaewele porous a me ke kaomi osmotic o ka slurry sima hou, a i ʻole nā waiwai hana kiʻiʻoniʻoni o ka cellulose ether e pale i ka hoʻolaha ʻana o ka wai.
2.ʻO ka hoʻomānoanoa ʻana o ka cellulose ether a me ka thixotropy
Hāʻawi ka cellulose ether i ka mortar pulu i ka viscosity maikaʻi loa, hiki ke hoʻonui nui i ka hiki ke hoʻopili ma waena o ka mortar pulu a me ka papa kumu, a hoʻomaikaʻi i ka hana anti-sag o ka mortar. Hoʻohana nui ʻia ia i ka mortar plastering, tile bonding mortar a me nā ʻōnaehana insulation paia waho. Hiki i ka hopena mānoanoa o ka cellulose ether ke hoʻonui i ke kū'ē ʻana i ka hoʻopuehu ʻana a me ka homogeneity o nā mea hou, pale i ka delamination mea, ka hoʻokaʻawale ʻana a me ke kahe ʻana o ke koko, a hiki ke hoʻohana ʻia i loko o ka fiber concrete, ka concrete underwater a me ka concrete self-compacting.
ʻO ka hopena mānoanoa o ka cellulose ether ma nā mea i hoʻokumu ʻia i ka sima mai ka viscosity o ka hopena cellulose ether. Ma lalo o nā kūlana like, ʻo ke kiʻekiʻe o ka viscosity o ka cellulose ether, ʻoi aku ka maikaʻi o ka viscosity o ka mea i hoʻokumu ʻia i ka sima i hoʻololi ʻia. Eia nō naʻe, inā kiʻekiʻe loa ka viscosity, e hoʻopilikia ia i ka wai a me ka hana o ka mea (e like me ke kau ʻana i ka pahi plaster). ʻO nā mortars leveling ponoʻī a me ka sima hoʻopaʻa ponoʻī e pono ai ka wai kiʻekiʻe e pono ai ka viscosity haʻahaʻa o ka cellulose ether. Eia kekahi, ʻo ka hopena mānoanoa o nā cellulose ethers e hoʻonui i ka koi wai o nā mea i hoʻokumu ʻia i ka sima a hoʻonui i ka hua mortar.
ʻO ka wai hoʻoheheʻe cellulose ether kiʻekiʻe-viscosity he thixotropy kiʻekiʻe, ʻo ia hoʻi kekahi ʻano nui o ka cellulose ether. ʻO nā wai hoʻoheheʻe o ka methylcellulose ma ke ʻano maʻamau he mau waiwai kahe pseudoplastic, non-thixotropic ma lalo o ko lākou mahana gel, akā hōʻike i nā waiwai kahe Newtonian ma nā wikiwiki shear haʻahaʻa. Hoʻonui ka Pseudoplasticity me ka hoʻonui ʻana o ke kaumaha molekala a i ʻole ka nui o ka cellulose ether, me ka nānā ʻole i ke ʻano a me ke kekelē o ka pani ʻana o ka substituent. No laila, ʻo nā cellulose ethers o ka papa viscosity like, inā ʻo MC, HPMC, a i ʻole HEMC, e hōʻike mau i nā waiwai rheological like inā e mālama mau ʻia ka nui a me ka mahana. Ke hoʻonui ʻia ka mahana, hoʻokumu ʻia kahi gel structural a loaʻa ke kahe thixotropic kiʻekiʻe.
Hōʻike nā ʻano kiʻekiʻe a me nā cellulose ethers viscosity haʻahaʻa i ka thixotropy ʻoiai ma lalo o ka mahana gel. He pono nui kēia waiwai i ka hoʻoponopono ʻana i nā waiwai leveling a me sagging o ka mortar hale i ka wā o ke kūkulu ʻana. Pono e hoʻomaopopo ʻia ma ʻaneʻi ʻo ke kiʻekiʻe o ka viscosity o ka cellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai, akā ʻo ke kiʻekiʻe o ka viscosity, ʻoi aku ke kiʻekiʻe o ke kaumaha molekala pili o ka cellulose ether, a emi iho kona solubility, kahi i loaʻa ai ka hopena maikaʻi ʻole i ka noʻonoʻo mortar a me ka hana kūkulu.
3.Ka hopena hoʻokomo ʻana o ka ea cellulose ether
He hopena koʻikoʻi ko ka Cellulose ether i ka hoʻokomo ʻana i ka ea ma luna o nā mea sima hou. Loaʻa i ka Cellulose ether nā hui hydrophilic (nā hui hydroxyl, nā hui ether) a me nā hui hydrophobic (nā hui methyl, nā apo glucose). He surfactant ia me ka hana ʻili a no laila he hopena hoʻokomo ea. ʻO ka hopena hoʻokomo ea o ka cellulose ether e hana i kahi hopena "pōpō", hiki ke hoʻomaikaʻi i ka hana hana o nā mea i hui hou ʻia, e like me ka hoʻonui ʻana i ka plasticity a me ka laumania o ka mortar i ka wā o ka hana, he mea maikaʻi ia no ka paving o ka mortar; e hoʻonui pū ia i ka hana o ka mortar a hoʻemi i ke kumukūʻai hana o ka mortar; akā e hoʻonui ia i ka porosity o nā mea paʻakikī a hoʻemi i ko lākou mau waiwai mechanical e like me ka ikaika a me ka modulus elastic.
Ma ke ʻano he surfactant, loaʻa pū ka cellulose ether i ka hopena pulu a lubricating paha i nā ʻāpana sima, kahi e hui pū ai me kona hopena ea e hoʻonui ai i ka wai o nā mea sima, akā ʻo kona hopena mānoanoa e hōʻemi i ka wai. ʻO ka hopena o ka cellulose ether ma ka wai o nā mea sima he hui pū ʻana o ka plasticization a me nā hopena mānoanoa. Ma ke ʻano laulā, i ka wā e haʻahaʻa loa ai ka nui o ka cellulose ether, ʻike nui ʻia ia ma ke ʻano he hopena plasticizing a i ʻole ka hōʻemi ʻana i ka wai; i ka wā e kiʻekiʻe ai ka nui, piʻi koke ka hopena mānoanoa o ka cellulose ether, a ʻo kona hopena ea e hoʻopili ana i ka saturation, no laila e hōʻike ʻia ia ma ke ʻano he hopena mānoanoa a i ʻole ka hoʻonui ʻana i ka koi wai.
4.Ka hopena hoʻopaneʻe cellulose ether
E hoʻolōʻihi ka cellulose ether i ka manawa hoʻonohonoho o ka paʻi sima a i ʻole ka mortar a hoʻopaneʻe i ka dinamika hydration sima, he mea pono ia e hoʻonui i ka manawa hana o ka mea hui hou a hoʻomaikaʻi i ka nalowale o ke kūlike o ka mortar a me ka slump sima e pili ana i ka manawa, akā hiki nō hoʻi ke hoʻopaneʻe i ka holomua o ke kūkulu ʻana.
Ka manawa hoʻouna: Sep-24-2024