Loaʻa i ka cellulose ether kahi paʻa wai maikaʻi loa, hiki ke pale i ka wai i loko o ka mortar pulu mai ka evaporating prematurely a i ʻole e komo ʻia e ka papa kumu, a e hōʻoia i ka hoʻomaʻamaʻa piha ʻana o ka sima, a laila e hōʻoiaʻiʻo i nā waiwai mechanical o ka mortar, ʻoi aku ka maikaʻi. i ka mīkini paʻipaʻi lahilahi a me nā papa kumu hoʻoheheʻe wai A i ʻole ka pahū i kūkulu ʻia ma lalo o nā kūlana wela a maloʻo.Hiki i ka hopena paʻa wai o cellulose ether ke hoʻololi i ke kaʻina hana kuʻuna a hoʻomaikaʻi i ka holomua o ke kūkulu ʻana.No ka laʻana, hiki ke hoʻokō ʻia ke kūkulu ʻana i ka plastering ma luna o nā substrate hoʻoheheʻe wai me ka ʻole o ka pulu.
ʻO ka viscosity, dosage, ambient temperature and molecular structure of cellulose ether he hopena nui i kāna hana mālama wai.Ma lalo o nā kūlana like, ʻoi aku ka nui o ka viscosity o cellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai;ʻoi aku ka kiʻekiʻe o ka dosage, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai.ʻO ka maʻamau, hiki i kahi liʻiliʻi o ka cellulose ether ke hoʻomaikaʻi nui i ka paʻa ʻana o ka wai o ka mortar.Ke piʻi ka nui o ka paʻa ʻana o ka wai, lohi ke ʻano o ka mālama ʻana i ka wai;i ka wā e piʻi aʻe ai ka wela, e emi maʻamau ka paʻa ʻana o ka wai o ka cellulose ether, akā ʻoi aku ka maikaʻi o ka mālama ʻana o ka wai ma lalo o nā kūlana kiʻekiʻe;ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai i nā fibers me nā degere haʻahaʻa o ka hoʻololi ʻana i ka Vegan ether.
ʻO ka hui hydroxyl ma ka cellulose ether mole a me ka oxygen atom ma ka paʻa etera e hui pū me ka mole wai e hana i kahi paʻa hydrogen, e hoʻohuli i ka wai manuahi i wai paʻa, a laila e pāʻani maikaʻi i ka mālama ʻana i ka wai;ʻO ka mole wai a me ka cellulose ether molecular chain Interdiffusion e hiki ai i nā molekole wai ke komo i loko o ke kaulahao macromolecular cellulose ether a pili i nā mana paʻa ikaika, a laila e hana ai i ka wai paʻa a me ka wai i hoʻopili ʻia, e hoʻomaikaʻi ai i ka paʻa ʻana o ka wai o ka slurry sima;Hoʻonui ka cellulose ether i ka slurry sima hou.ʻO nā waiwai rheological, ka hoʻolālā pūnaewele porous a me ke kaomi osmotic a i ʻole nā mea hana kiʻiʻoniʻoni o cellulose ether e pale i ka laha ʻana o ka wai.
Hāʻawi ka cellulose ether i ka mortar pulu me ka viscosity maikaʻi loa, hiki ke hoʻonui nui i ka hiki ke hoʻopaʻa ʻia ma waena o ka mortar pulu a me ka papa kumu, a hoʻomaikaʻi i ka hana anti-sagging o ka mortar.Hoʻohana nui ʻia ia i ka plastering mortar, brick bonding mortar a me waho o ka ʻōnaehana insulation pā.ʻO ka hopena mānoanoa o ka cellulose ether hiki ke hoʻonui i ka hiki anti-dispersion a me ka homogeneity o nā mea hou i hui pū ʻia, pale i ka delamination mea, ka hoʻokaʻawale ʻana a me ke koko, a hiki ke hoʻohana ʻia i loko o ka fiber concrete, underwater concrete and self-compacting concrete.
ʻO ka hopena mānoanoa o ka cellulose ether ma nā mea i hoʻokumu ʻia i ka sima mai ka viscosity o ka solution cellulose ether.Ma lalo o nā kūlana like, ʻoi aku ka kiʻekiʻe o ka viscosity o cellulose ether, ʻoi aku ka maikaʻi o ka viscosity o ka mea i hoʻololi ʻia i ka sima, akā inā kiʻekiʻe loa ka viscosity, e hoʻopili ia i ka wai a me ka hana o ka mea (e like me ke kau ʻana i ka pahi plastering. ).ʻO ka mortar hoʻokiʻekiʻe ponoʻī a me ka paʻa paʻa ponoʻī, e koi ana i ka wai kiʻekiʻe, e koi i ka viscosity haʻahaʻa o cellulose ether.Eia kekahi,ʻo ka hopena mānoanoa o ka cellulose ether e hoʻonui i ka koi wai o nā mea hana sima a hoʻonui i ka hua o ka mortar.
ʻO ka viscosity o ka cellulose ether solution e pili ana i nā kumu aʻe: ke kaumaha molekala o ka cellulose ether, ka ʻike, ka mahana, ka shear rate a me ke ʻano hoʻāʻo.Ma lalo o nā kūlana like, ʻoi aku ka nui o ke kaumaha o ka molecular cellulose ether, ʻoi aku ka kiʻekiʻe o ka viscosity o ka hopena;ʻoi aku ka kiʻekiʻe o ka ʻike, ʻoi aku ka kiʻekiʻe o ka viscosity o ka hopena.I ka hoʻohana ʻana iā ia, pono e mālama ʻia e pale aku i ka nui o ka dosage a pili i ka hana o ka mortar a me ke koneki;cellulose ether E emi ana ka viscosity o ka solution ether me ka hoʻonui ʻana o ka mahana, a ʻoi aku ka kiʻekiʻe o ka ʻike, ʻoi aku ka nui o ka mana o ka mahana;ʻO ka cellulose ether solution ka mea maʻamau he wai pseudoplastic me ka waiwai o ka shear thinning, ʻoi aku ka nui o ka shear rate i ka wā o ka hoʻāʻo ʻana, ʻoi aku ka liʻiliʻi o ka viscosity, no laila, e emi iho ka cohesion o ka mortar ma lalo o ka hana o ka ikaika o waho, i mea e pono ai ka ʻokiʻoki i ka hana ʻana o ka mortar, i hiki i ka mortar ke hana maikaʻi a me ka hui pū ʻana i ka manawa like;no ka mea, ʻaʻole Newtonian ka solution cellulose ether No nā wai, ke ʻokoʻa nā ʻano hoʻokolohua, nā mea hana a me nā wahi hoʻāʻo i hoʻohana ʻia no ka hoʻāʻo ʻana i ka viscosity, ʻokoʻa nā hopena hōʻike o ka solution cellulose ether like.
Hiki i nā molekule ether cellulose ke hoʻoponopono i kekahi mau molekule wai o ka mea hou ma ka ʻaoʻao o ke kaulahao mole, pēlā e hoʻonui ai i ka viscosity o ka hopena.Hoʻopili ʻia nā kaulahao mole o ka cellulose ether e hana i kahi ʻano pūnaewele ʻekolu-dimensional, kahi e hana ai i kāna ʻano wai i ka viscosity maikaʻi.
Loaʻa ka thixotropy kiʻekiʻe o ka cellulose ether aqueous solution, ʻo ia hoʻi kahi ʻano nui o ka cellulose ether.He pseudoplastic a non-thixotropic ka wai o ka methyl cellulose ma lalo o kona wela gel, akā e hōʻike ana i nā waiwai kahe o Newtonian ma nā ʻili haʻahaʻa.Hoʻonui ka Pseudoplasticity me ka paona molekala a i ʻole ka ʻike ʻana o ka cellulose ether, me ka nānā ʻole i ke ʻano o ka mea pani a me ke degere o ka hoʻololi.No laila, e hōʻike mau ana nā cellulose ethers o ka pae viscosity like, ʻaʻohe mea mc, HPmc, HEmc, i nā ʻano rheological like me ka lōʻihi o ka mālama ʻana a me ka mahana.Hoʻokumu ʻia nā gels Structural i ka wā e piʻi aʻe ai ka mahana, a hiki mai nā kahe thixotropic kiʻekiʻe.Hōʻike ka ʻike kiʻekiʻe a me ka haʻahaʻa viscosity cellulose ethers i ka thixotropy ma lalo o ka mahana gel.He pōmaikaʻi nui kēia waiwai i ka hoʻoponopono ʻana i ka pae ʻana a me ka sagging i ke kūkulu ʻana i ka mortar hale.Pono e wehewehe ʻia ma ʻaneʻi ʻo ke kiʻekiʻe o ka viscosity o cellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai, akā ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka kiʻekiʻe o ke kaumaha molecular pili o cellulose ether, a me ka emi ʻana o kona solubility, he hopena maikaʻi ʻole. e pili ana i ka hoʻopaʻa ʻana o ka mortar a me ka hana hana.ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka maopopo o ka hopena mānoanoa ma ka mortar, akā ʻaʻole ia i kūlike loa.ʻO kekahi haʻahaʻa haʻahaʻa a me ka viscosity, akā ʻoi aku ka maikaʻi o ka cellulose ether i hoʻololi ʻia i ka hoʻomaikaʻi ʻana i ka ikaika o ka mortar pulu.Me ka piʻi ʻana o ka viscosity, hoʻomaikaʻi ka paʻa wai o ka cellulose ether.
Ka manawa hoʻouna: Feb-28-2023