ʻO ke kiʻekiʻe o ka viscosity ohydroxypropyl methylcellulose, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai.ʻO ka viscosity kahi mea koʻikoʻi o ka hana HPMC.I kēia manawa, hoʻohana nā mea hana HPMC like ʻole i nā ʻano hana like ʻole a me nā mea hana e ana i ka viscosity o HPMC.ʻO nā ala nui ʻo Haake Rotovisko, Hoppler, Ubbelohde a me Brookfield.
No ka huahana hoʻokahi, ʻokoʻa loa nā hopena viscosity i ana ʻia e nā ʻano hana like ʻole, a pāpālua kekahi i ka ʻokoʻa.No laila, i ka hoʻohālikelike ʻana i ka viscosity, e ʻoluʻolu e hana ma waena o nā ʻano hoʻokolohua like, me ka mahana, rotor, etc.
No ka nui o ka ʻāpana, ʻoi aku ka maikaʻi o ka ʻāpana, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai.Ma hope o ka hoʻopili ʻana o nā ʻāpana nui o ka cellulose ether me ka wai, e hoʻoheheʻe koke ka ʻili e hana i kahi gel, kahi e hoʻopili ai i ka mea e pale ai i ka infiltration mau o nā molekele wai..Hoʻopilikia nui ia i ka hopena paʻa wai o kāna cellulose ether, a ʻo ka solubility kekahi o nā kumu no ke koho ʻana i ka cellulose ether.ʻO ka maikaʻi kekahi mea nui o ka methyl cellulose ether.ʻO ka MC i hoʻohana ʻia no ka pauka maloʻo maloʻo e koi ʻia he pauka, me ka haʻahaʻa wai haʻahaʻa, a ʻo ka maikaʻi hoʻi e pono ai ka 20% a 60% o ka nui o ka nui ma lalo o 63um.Pili ka fineness i ka solubility o ka hydroxypropyl methylcellulose ether.He mea maʻamau ka MC Coarse, a he maʻalahi ke hoʻoheheʻe i ka wai me ka ʻole o ka agglomeration, akā lohi ka dissolution rate, no laila ʻaʻole kūpono ia no ka hoʻohana ʻana i ka mortar maloʻo.I loko o ka lepo lepo maloʻo, hoʻopuehu ʻia ʻo MC ma waena o nā mea cementitious e like me nā aggregates, nā mea hoʻopihapiha maikaʻi a me ka sima.ʻO ka pauka maikaʻi wale nō e hiki ke pale i ka hoʻohui ʻana o ka methyl cellulose ether i ka hui ʻana me ka wai.Ke hoʻohui ʻia ka MC me ka wai e hoʻoheheʻe i nā agglomerates, paʻakikī ke hoʻopuehu a hoʻoheheʻe.ʻO ka MC me ka coarser fineness ʻaʻole ia wale nō ka hoʻopau wale ʻana, akā e hōʻemi ana hoʻi i ka ikaika kūloko o ka mortar.Ke kūkulu ʻia kēlā ʻano pahu maloʻo maloʻo ma kahi ākea, e hoʻemi nui ʻia ka wikiwiki o ka hoʻōla ʻana o ka lepo maloʻo maloʻo kūloko, a ʻo ka haki ʻana ma muli o nā manawa hoʻōla like ʻole.No ka mortar spray e hoʻohana ana i ka hana mechanical, ma muli o ka manawa pōkole o ka hoʻoulu ʻana, pono ke kiʻekiʻe o ka fineness.
ʻO ka ʻōlelo maʻamau, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai.Eia naʻe, ʻoi aku ka kiʻekiʻe o ka viscosity a ʻoi aku ka kiʻekiʻe o ke kaumaha molecular o MC, ʻo ka hoʻohaʻahaʻa like ʻana i kona solubility, kahi hopena maikaʻi ʻole i ka ikaika a me nā waiwai kūkulu o ka mortar.ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka maopopo o ka hopena mānoanoa o ka mortar, akā ʻaʻole like ia.ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka paʻa o ka mortar pulu.I ka wā o ke kūkulu ʻia ʻana, e hoʻopili ʻo ia i ka scraper a loaʻa ka pili kiʻekiʻe i ka substrate.Akā, he mea liʻiliʻi ia e hoʻonui ai i ka ikaika o ke kūkulu ʻana o ka mortar pulu ponoʻī.I ka wā o ke kūkulu ʻana, ʻaʻole maopopo ka hana o ka hana anti-sagging.ʻO ka mea ʻē aʻe, ʻoi aku ka maikaʻi o ka hana ʻana o kekahi mau methyl cellulose ethers haʻahaʻa-viscosity akā hoʻololi ʻia i ka hoʻomaikaʻi ʻana i ka ikaika o ke kūkulu ʻana o ka mortar pulu.
ʻO ka nui o ka cellulose ether i hoʻohui ʻia i loko o ka mortar, ʻoi aku ka maikaʻi o ka hana paʻa wai, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hana paʻa wai.
ʻO ka maikaʻi o ka HPMC kekahi mana i kona paʻa wai.ʻO ka ʻōlelo maʻamau, no ka methyl cellulose ethers me ka like viscosity akā ʻokoʻa ka fineness, i ka hihia o ka nui hoʻohui like, ʻoi aku ka maikaʻi o ka fineness, ʻoi aku ka maikaʻi o ka hopena paʻa wai.
ʻO ka paʻa ʻana o ka wai o HPMC e pili pū ana me ka mahana i hoʻohana ʻia, a ke emi nei ka paʻa wai o ka methyl cellulose ether me ka piʻi ʻana o ka mahana.Eia nō naʻe, i nā mea hana pono, hoʻohana pinepine ʻia ka mīkini pauka maloʻo i nā substrate wela i nā wela kiʻekiʻe (ʻoi aku ma mua o 40 degere) i nā wahi he nui, e like me ka pā o waho ka putty plastering ma lalo o ka lā i ke kauwela, e hoʻolōʻihi pinepine i ka hoʻōla ʻana o ka sima a me ka paʻakikī. puna maloo.ʻO ka hāʻule ʻana o ka paʻa ʻana o ka wai ua alakaʻi i kahi ʻike maopopo e pili ana ka hana a me ka pale ʻana i ka māwae, a he mea koʻikoʻi loa ia e hōʻemi i ka hopena o nā mea wela ma lalo o ia mau kūlana.ʻOiai ua manaʻo ʻia ʻo methyl hydroxyethyl cellulose ether additive ma ke alo o ka hoʻomohala ʻenehana, hiki i kona hilinaʻi ʻana i ka mahana ke alakaʻi i ka nāwaliwali o ka hana mortar maloʻo.ʻOiai ua hoʻonui ʻia ka nui o ka methyl hydroxyethyl cellulose (ke kumu kauwela), ʻaʻole hiki ke hoʻokō i ka pono o ka hoʻohana.Ma o kekahi mau lapaʻau kūikawā, e like me ka hoʻonui ʻana i ke kiʻekiʻe o ka etherification, hiki i ka MC ke mālama i kāna hopena paʻa wai i ʻoi aku ka maikaʻi ma nā mahana kiʻekiʻe, i hiki iā ia ke hāʻawi i ka hana ʻoi aku ka maikaʻi ma lalo o nā kūlana paʻakikī.
Ka manawa hoʻouna: Oct-20-2022