Ka hopena mānoanoa o ka cellulose ether

Cellulose eterahāʻawi i ka mortar pulu me ka viscosity maikaʻi loa, hiki ke hoʻonui nui i ka hiki ke hoʻopaʻa ʻia o ka mortar pulu a me nā ʻuʻu, hoʻomaikaʻi i ka hana anti-sag o ka mortar, hoʻohana nui ʻia i ka mortar plaster, ʻōnaehana insulation waho a me ka mortar paʻa pōhaku. Hiki i ka thickening hopena o cellulose etera hiki ke hoʻonui i ka uniformity a me ka anti-dispersion hiki o ka hou sima ma muli mea, e pale aku i ka stratification, segregation a me ke koko o ka mortar a me ka paʻa, hiki ke hoʻohana 'ia i loko o ka puluniu kuʻimaka, lalo wai kaila a me ka pakiko-compacting.

Cellulose eterahoʻonui i ka viscosity o nā mea i hoʻokumu ʻia i ka sima mai ka viscosity o ka solution cellulose ether. E hoʻohana maʻamau i ka "viscosity" i kēia metric no ka loiloi ʻana i ka viscosity solution cellulose ether, ʻo ka viscosity o cellulose ether e pili ana i kahi ʻano (2%) o ka cellulose ether solution, wela (20 ℃) ​​a me ka shear rate (a i ʻole ka wikiwiki o ka huli ʻana, e like me 20 RPM), me nā lako o ka mea ana, e like me ka rotating viscometer ana viscosity values. He mea nui ka viscosity no ka loiloi ʻana i ka hana o ka cellulose ether a me ka cellulose ether, ʻoi aku ka kiʻekiʻe o ka viscosity o ka hopena, ʻoi aku ka maikaʻi o ka viscosity o nā kumu kumu sima, hiki i ka viscosity o ke kumu kumu, ke kū kūʻē a me ke kūʻē i ka ikaika o ka dispersion. akā, inā ʻoi aku ka nui o ka viscosity, hiki ke hoʻopili i ka mobility kumu a me ka maneuverability (e like me ke kūkulu ʻana i ka plaster mortar adhesive plaster). No laila, ʻo ka viscosity o cellulose ether i hoʻohana ʻia i ka mortar maloʻo i hui pū ʻia he 15,000 ~ 60,000 Mpa. s-1, a ʻo ka viscosity o ka cellulose ether e koi ʻia e haʻahaʻa no ka mortar-leveling mortar a me ka concrete paʻa ponoʻī me nā koi fluidity kiʻekiʻe. Eia kekahi,ʻo ka hopena mānoanoa o ka cellulose ether e hoʻonui i ka pono o ka wai o nā mea sima, pēlā e hoʻonui ai i ka puka o ka mortar. ʻO ka viscosity o kahi solution cellulose ether e pili ana i ke kaumaha molekala (a i ʻole ke degere o ka polymerization) a me ka neʻe ʻana o ka cellulose ether, ka wela o ka hopena, ka shear rate, a me ke ʻano hoʻāʻo. ʻOi aku ka kiʻekiʻe o ka polymerization degere o cellulose ether, ʻoi aku ka nui o ke kaumaha mole, ʻoi aku ka kiʻekiʻe o ka viscosity o kāna ʻano wai; ʻO ke kiʻekiʻe o ka dosage (a i ʻole ka ʻike ʻana) o ka cellulose ether, ʻoi aku ka kiʻekiʻe o ka viscosity o kāna hoʻonā wai, akā i ka hoʻohana ʻana, pono e hoʻolohe i ke koho ʻana i ke ʻano kūpono, i ʻole e hui pū me ke kiʻekiʻe, e hoʻopilikia i ka hana o ka mortar a me ke koneki; E like me ka nui o nā wai, e emi ana ka viscosity o ka solution cellulose ether me ka piʻi ʻana o ka mahana, a ʻoi aku ka kiʻekiʻe o ka ʻike o ka cellulose ether, ʻoi aku ka nui o ka hopena o ka mahana; ʻO ka cellulose ether solution ka mea maʻamau he kino pseudoplastic me ka waiwai o ka shear thinning. ʻO ke kiʻekiʻe o ka shear rate, ʻoi aku ka haʻahaʻa o ka viscosity.

No laila, e hoʻemi ʻia ka hui ʻana o ka mortar e ka ikaika o waho, kahi mea e kūpono ai i ke kālai ʻana o ka mortar, e hana ana i ka mortar hiki ke hana maikaʻi a me ka cohesion. Eia nō naʻe, e hōʻike ana ka hopena cellulose ether i nā ʻano wai o Newtonian i ka wā e haʻahaʻa loa ka ʻike a liʻiliʻi loa ka viscosity. Ke piʻi aʻe ka ʻike, hōʻike mālie ka hopena i nā ʻano wai pseudoplastic, a ʻoi aku ka kiʻekiʻe o ka ʻike, ʻoi aku ka maopopo o ka pseudoplastic.