ʻO ka hoʻopili ʻana i ka tile cement-based i kēia manawa ka noi nui loa o ka mortar hui maloʻo kūikawā, ʻo ia ke ʻano o ka sima ma ke ʻano he kumu cementing mea a hoʻohui ʻia e ka gradation o ka aggregate, ka mea mālama wai, ka mea ikaika mua, ka pauka latex a me nā mea ʻē aʻe mea hui.Hoʻohana maʻamau wale me ka hui ʻana o ka wai, ke hoʻohālikelike ʻia me ka mortar sima maʻamau, hiki ke hoʻomaikaʻi nui i ka ikaika hoʻopaʻa ʻana ma waena o ka mea hoʻopau a me ka mea kumu, he anti-slip maikaʻi a he kūpaʻa wai maikaʻi loa, kūpaʻa wela a me nā pōmaikaʻi o ka pōʻai manuahi, hoʻohana nui ʻia. no ka hoʻopiliʻana i ka hale o loko a me waho o ka pā hale, ka papahele a me nā mea hoʻonani'ē aʻe, Hoʻohana nuiʻia ia i ka hoʻonaniʻana i nā paia, nā papahele, nā lumi lumi, nā lumi kuke a me nā hale'ē aʻe.ʻO ia ka mea i hoʻohana nui ʻia no ka hoʻopaʻa ʻana i nā tile ceramic.
ʻO ka manawa maʻamau ke hoʻokolokolo mākou i ka hana o kahi mea hoʻopili ceramic tile, ma kahi o ka hoʻolohe ʻana i kāna hana hana, hiki ke anti-sliding, akā e hoʻolohe pū i kona ikaika mechanical a me ka manawa wehe.ʻO ka cellulose ether ma ke kīleʻa seramika i hoʻohui ʻia e hoʻopili i nā waiwai rheological o ka porcelain glue, e like me ka hana maʻemaʻe o ka hana, ke kūlana pahi lāʻau, akā ma nā ʻano mechanical o ka ceramic tile adhesive he ikaika ikaika.
1. Wehemanawa
Ke noho pū ka pauda lāʻau a me ka cellulose ether i loko o ka mortar pulu, hōʻike kekahi mau hiʻohiʻona ʻike he ʻoi aku ka ikaika o ka ikehu kinetic e pili ana i nā huahana hydration cement, a ʻoi aku ka nui o ka cellulose ether i loko o ka wai āpau, e pili ana i ka viscosity a me ka hoʻonohonoho manawa o ka mortar. hou aku.ʻOi aku ka nui o ka ʻili o ka cellulose ether ma mua o ka pauka lāʻau, a ʻo ka hoʻonui ʻana i ka cellulose ether ma ka mortar interface he mea maikaʻi ia i ka hoʻokumu ʻana i nā paʻa hydrogen ma waena o ka mokulele kumu a me ka cellulose ether.
ʻO ka hoʻoheheʻe ʻana o ka wai mai loko o ka mortar pulu, mortar, cellulose ether i ka hoʻonui ʻia ʻana o ka ʻili, 5 mau minuke hiki ke hana i kahi membrane ma ka ʻili o ka mortar, e hōʻemi i ka helu evaporation o ka hahai ʻana, me ka nui o ka wai mai ka slurry mānoanoa o ka ʻāpana. neʻe i ka mortar papa mea thinner, hamama wahi hapa i ka wā o ka hana mua o ka membrane, i ka neʻe 'ana o ka wai hiki ke lawe hou enrichment o cellulose etera i loko o ka mortar ma luna o ka ili.
ʻO ka hana kiʻiʻoniʻoni o cellulose ether ma luna o ka ʻili o ka mortar he mana nui i nā waiwai o ka mortar:
ʻO ka mua, ʻoi aku ka lahilahi o ka kiʻiʻoniʻoni, e hoʻoheheʻe ʻia ʻelua, ʻaʻole hiki ke kaupalena i ka evaporation o ka wai, hoʻemi i ka ikaika.
ʻElua, ʻoi aku ka mānoanoa o ka hoʻokumu ʻana o ka kiʻiʻoniʻoni, cellulose ether i loko o ka mortar gap liquid concentration he kiʻekiʻe, viscosity, i ka wā ʻaʻole maʻalahi ka paʻi kiʻi ceramic e wāwahi i ka ʻili o ke kiʻi.
Hiki ke ʻike ʻia he mana nui ka hana kiʻiʻoniʻoni o cellulose ether i ka manawa wehe.ʻO ke ʻano o ka cellulose ether (HPMC, HEMC, MC, etc.) a me ka degere o ka etherification (degree of substitution) pili pono i ka hana kiʻiʻoniʻoni o cellulose ether, i ka paʻakikī a me ka paʻakikī o ke kiʻi.
2, huki ikaika
ʻAʻole hāʻawi wale ʻo Cellulose ether i ka mortar me nā waiwai maikaʻi a pau i luna, akā hoʻopaneʻe pū i nā kinetics hydration o ka sima.ʻO kēia hopena hope loa ma muli o ka adsorption o nā molekule eter cellulose ma nā ʻano mineral like ʻole i ka ʻōnaehana cement e hoʻoheheʻe ʻia, akā ʻae ʻia ka nui o nā molekole cellulose ether e hoʻopili ʻia i nā huahana hydration e like me CSH a me ka calcium hydroxide, a ʻaʻole loa e hoʻopili ʻia ma luna. ka mahele mineral mua o ka clinker.Eia kekahi, hoʻemi ka cellulose ether i nā ion (Ca2+, SO42-,…) ma muli o ka piʻi ʻana o ka viscosity o ka solution pore.ʻO ka hana i loko o ka pore solution, e hoʻopaneʻe hou i ke kaʻina hana hydration.
ʻO ka Viscosity kekahi mea koʻikoʻi nui, e hōʻike ana i nā waiwai kemika o cellulose ether.E like me ka mea i ʻōlelo ʻia ma luna, pili nui ka viscosity i ka hiki ke mālama i ka wai, a he hopena nui hoʻi i ka hana o ka mortar hou.Eia naʻe, ua ʻike ʻia ka haʻawina hoʻokolohua ʻaʻohe hopena o ka viscosity o cellulose ether i ka hydration kinetics o ka sima.He liʻiliʻi ka mana o ka paona molekala i ka hydration, a ʻo ka ʻokoʻa nui loa ma waena o nā kaupaona molekala ʻokoʻa he 10min wale nō.No laila, ʻaʻole ʻo ke kaumaha o ka moleke ke kumu nui e hoʻomalu ai i ka hydration sima.
"Cellulose ether i loko o ka sima ma muli o ka hui maloʻo maloʻo huahana i loko o ka palapala noi" akaka kuhikuhi i ka cellulose etera lohi ma luna o kona kemika.ʻO ke ʻano maʻamau ʻo ia no ka MHEC, ʻoi aku ka kiʻekiʻe o ke kiʻekiʻe o ka methylation, ʻoi aku ka liʻiliʻi o ka hopena retarding o cellulose ether.Eia kekahi, ʻoi aku ka ikaika o ka hoʻololi ʻana o ka hydrophilic (e like me ka hoʻololi ʻana o HEC) ma mua o ka hydrophobic substitution (e like me ka hoʻololi ʻana o MH, MHEC a me MHPC).Hoʻopili nui ʻia ka hopena o ka cellulose ether e nā ʻāpana ʻelua o ke ʻano a me ka helu o nā pūʻulu i pani ʻia.
Ua ʻike pū kā mākou hoʻokolohua ʻōnaehana he kuleana koʻikoʻi ka ʻike o nā substituent i ka ikaika mechanical o ka mea hoʻopili ceramic tile.Ua loiloi mākou i ka hana ʻana o HPMC me nā pae like ʻole o ka hoʻololi ʻana i ka mea hoʻopili ceramic tile, a ua hoʻāʻo i ka mana o ka cellulose ether i loaʻa nā hui like ʻole ma lalo o nā kūlana hoʻōla like ʻole i nā ʻano mechanical o ka lāʻau seramika.Ka hopena o ka maʻiʻo o DS a me MS ma ke kaha kaha kiʻi ʻana o ka mea hoʻopili ceramic tile ma ke ana wela.
ʻO ka HPMC he ether composite, no laila e hoʻohui i nā helu ʻelua, no ka HPMC, pono kahi degere o ka lako, i mea e hōʻoia ai i kona solubility wai a me ka transmittance, ʻike mākou ʻo ka ʻike o nā substituents e hoʻoholo i ka mahana gel o HPMC , ʻo ia ka mea e hoʻoholo ai i ka hoʻohana ʻana i ka ʻenehana HPMC, Ma kēia ala, ua hoʻonohonoho ʻia ka ʻike o ka hui o HPMC i kahi ākea.Ma kēia pae, pehea e hoʻohui ai i ka methoxy a me ka hydroxypropoxy e hoʻokō i ka hopena maikaʻi loa ka ʻike o kā mākou noiʻi.Ma kekahi ʻano, ʻo ka hoʻonui ʻana o ka maʻiʻo methoxy e alakaʻi i kahi ʻano haʻahaʻa o ke kaha kaha kiʻi, aʻo ka piʻi ʻana o ka ʻike hydroxypropoxy e alakaʻi i kahi ʻano kiʻekiʻe o ke kaha kaha kiʻi.Aia kekahi hopena like i ka manawa wehe.
Ka manawa hoʻouna: Dec-20-2021