ʻO ka nui o ka viscosity oHPMChydroxypropyl methyl cellulose, ʻoi aku ka maikaʻi o ka hana paʻa 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 hoʻoholo ai i ka viscosity o HPMC. ʻO nā ala nui ʻo Haake Rotovisko, Hoppler, Ubbelohde a me Brookfield, etc.
No ka huahana like, ʻokoʻa loa nā hopena o ka viscosity i ana ʻia e nā ʻano like ʻole, ʻokoʻa kekahi. No laila, i ka hoʻohālikelike ʻana i ka viscosity, pono e hana ʻia ma waena o ke ʻano hoʻāʻo 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. ʻO nā ʻāpana nui o ka cellulose ether e hoʻopili me ka wai, e hoʻoheheʻe koke ka ʻili a hana i kahi gel e uhi ai i ka mea e pale ai i nā molekele wai mai ka hoʻomau ʻana i ke komo ʻana, i kekahi manawa lōʻihi ka hoʻoulu ʻana ʻaʻole hiki ke hoʻoheheʻe ʻia, ke kūkulu ʻia ʻana o kahi hopena flocculent lepo a i ʻole. hōʻuluʻulu. ʻO ka solubility o cellulose ether kekahi o nā kumu e koho ai i ka cellulose ether. ʻO ka maikaʻi kekahi mea nui o ka methyl cellulose ether. Pono ka MC no ka mortar maloʻo i ka pauka, ka wai haʻahaʻa, a me ka maikaʻi o 20% ~ 60% ka nui o ka nui ma lalo o 63um. Pili ka fineness i ka solubility oHPMChydroxypropyl methyl cellulose ether. He mea maʻamau ka MC Coarse a hiki ke hoʻoheheʻe maʻalahi i ka wai me ka ʻole o ka agglomerating, akā lohi loa ka wikiwiki o ka hemo ʻana, no laila ʻaʻole kūpono ia no ka hoʻohana ʻana i ka mortar maloʻo. I loko o ka pahū maloʻo, ua hoʻopuehu ʻia ka MC ma waena o ka hui, nā mea hoʻopihapiha maikaʻi a me nā mea hoʻomaʻemaʻe e like me ka sima, a ʻo ka pauka maikaʻi wale nō ka mea hiki ke pale i ka clumping o ka methyl cellulose ether i ka hui ʻana me ka wai. Ke hoʻohui ʻo MC i ka wai e hoʻoheheʻe i ka agglomerate, paʻakikī loa ka hoʻopuehu a hoʻoheheʻe ʻia. ʻO MC me ka fineness coarse ʻaʻole wale nā ʻōpala, akā hoʻemi pū i ka ikaika kūloko o ka mortar. Ke kūkulu ʻia kēlā momi maloʻo ma kahi ākea, e hoʻemi nui ʻia ka wikiwiki o ka hoʻōla ʻana o ka mortar maloʻo kūloko, e hopena i ka haki ʻana ma muli o ka manawa hoʻōla ʻokoʻa. No ka mīkini hoʻoheheʻe mīkini, no ka manawa pōkole o ka hui ʻana, ʻoi aku ka maikaʻi.
ʻO ka ʻōlelo maʻamau, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka hopena paʻa wai. Eia nō naʻe, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka kiʻekiʻe o ke kaumaha o ka molekala o MC, a e emi ana ka hana dissolution e like me ia, kahi hopena maikaʻi ʻole i ka ikaika a me ke kūkulu ʻana i ka mortar. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka maopopo o ka hopena mānoanoa o ka mortar, akā ʻaʻole like ia me ka pilina. ʻO ke kiʻekiʻe o ka viscosity, e ʻoi aku ka paʻa o ka mortar pulu, ke kūkulu ʻia ʻana, ka hana o ka scraper sticky a me ka hoʻopili kiʻekiʻe i ka mea kumu. Akā ʻaʻole kōkua ka hoʻonui ʻana i ka ikaika o ke kūkulu ʻana o ka mortar pulu. I ka wā o ke kūkulu ʻana, ʻaʻole maopopo ka hana anti-sag. ʻO ka mea ʻē aʻe, ʻoi aku ka maikaʻi o ka hana ʻana o kekahi viscosity haʻahaʻa akā hoʻololi ʻia ka methyl cellulose ethers i ka hoʻomaikaʻi ʻana i ka ikaika o ke kūkulu ʻana o ka mortar pulu.
ʻOi aku ka nui o ka cellulose ether i hoʻohui ʻia i ka mortar, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai.
ʻO ka maikaʻi o ka HPMC kekahi hopena i kona paʻa ʻana i ka wai, ma ka ʻōlelo maʻamau, no ka like viscosity a me ka fineness like ʻole o ka methyl cellulose ether, i ka hihia o ka nui o ka hoʻohui, 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 o ka hoʻohana ʻana, a ke emi nei ka paʻa ʻana o ka wai o ka methyl cellulose ether me ka piʻi ʻana o ka mahana. Akā i ka palapala noi maoli, nui nā kaiapuni o ka mortar maloʻo pinepine i ke kiʻekiʻe kiʻekiʻe (ʻoi aku ma mua o 40 degere) ma lalo o ke ʻano o ke kūkulu ʻana i ka substrate wela, e like me ke kauwela insolation o ka pā waho putty plastering, ka mea i wikiwiki i ka paʻa ʻana o ka lepo. ʻo ka paʻakikī sima a me ka hamo maloʻo. ʻO ka emi ʻana o ka nui o ka paʻa ʻana o ka wai e alakaʻi i ka manaʻo maopopo e pili ana i ka hiki ke kūkulu ʻia a me ke kūpaʻa ʻana. Ma kēia kūlana, lilo ka ho'ēmiʻana i ka mana o nā mea wela. ʻOiai ua manaʻo ʻia ka mea hoʻohui o ka methyl hydroxyethyl cellulose ether i ke poʻo o ka hoʻomohala ʻenehana, ʻo kona hilinaʻi ʻana i ka mahana e alakaʻi mau i ka nāwaliwali o nā waiwai o ka mortar maloʻo. ʻOiai me ka piʻi ʻana o ka methyl hydroxyethyl cellulose dosage (kauwela kumu), ʻaʻole hiki ke hoʻokō i ke kūkulu ʻana a me ka pale ʻana i nā pono o ka hoʻohana. Ma o kekahi hana kūikawā o MC, e like me ka hoʻonui ʻana i ke kiʻekiʻe o ka etherification, hiki i ka hopena paʻa wai o MC ke mālama i kahi hopena maikaʻi aʻe ma lalo o ke kiʻekiʻe wela, i hiki iā ia ke hāʻawi i ka hana maikaʻi ma lalo o nā kūlana paʻakikī.
Ka manawa hoʻouna: Mei-18-2022