1. He aha ke kumu nui o HPMC?
Hoʻohana ʻia kēia huahana ma ke ʻano he mānoanoa, dispersant, binder, excipient, oil-resistant coating, filler, emulsifier a me stabilizer i ka ʻoihana textile. Hoʻohana nui ʻia ia i ka resin synthetic, petrochemical, ceramic, pepa, ʻili, lāʻau lapaʻau, meaʻai a me nā ʻoihana hoʻonaninani.
2. He aha ke kuleana oHPMCi loko o ka paia putty pauda?
ʻEkolu mau hana o ka HPMC: ka pauka putty no ka paia o loko, ka mānoanoa, ka laka wai a me ke kūkulu ʻana. ʻO ka hoʻopaʻa ʻana: Hiki ke hoʻopaʻa ʻia ʻo Methyl cellulose e ka wai lana a i ʻole ka wai e mālama i nā hana like a paʻa a pale i ka kahe ʻana a me ke kau ʻana. Paʻa ka wai: maloʻo mālie ka pauka pā o loko, a ʻike ʻia ka lime calcium i ka hoʻohana ʻana i ka wai. Hana ʻenekinia: He hana pulu ka methyl cellulose, hiki ke hana i ka pauka putty pā i loko i kahi ʻano ʻenekinia maikaʻi. ʻAʻole komo ʻo HPMC i ka hoʻololi ʻana o nā kemika āpau, akā komo wale i ka hoʻopiha hou ʻana. ʻO ka pauka putty pā i loko, ma ka paia, he hoʻololi kemika, no ka mea, aia kahi hoʻololi kemika hou, wehe ʻia ka pauda putty o loko mai ka pā, wili ʻia, a hoʻohana hou ʻia, No ka mea, ua hana ʻia kahi mea kemika hou (calcium bicarbonate). ʻO nā mea nui o ka pauka calcium hina: he hui ʻana o Ca(OH)2, CaO a me kahi wahi liʻiliʻi o CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O hina calcium i loko o ka wai a me ka ea Ma lalo o ka hana a CO2, hoʻokumu ʻia ka calcium carbonate, ʻoiai ʻo HPMC wale nō ka mālama ʻana i ka wai a ʻaʻole kōkua i ka maikaʻi o ka hopena o ka ʻeleʻele.
3. Pehea e hoʻoholo ai i ka maikaʻi oHPMCmaʻalahi a intuitive?
(1) Keʻokeʻo: ʻOiai ʻaʻole hiki i ka keʻokeʻo ke hoʻoholo inā he maʻalahi ka HPMC e hoʻohana, a inā hoʻohui ʻia kahi mea hoʻomālamalama i ke kaʻina hana, e hoʻopilikia ia i kona maikaʻi. Eia naʻe, he keʻokeʻo maikaʻi nā huahana maikaʻi. (2) Fineness: ʻO ka maikaʻi o ka HPMC he 80 mesh a me 100 mesh, 120 mesh ka liʻiliʻi, a ʻo ka hapa nui o ka HPMC i hana ʻia ma Hebei he 80 mesh. ʻO ka ʻoi aku ka maikaʻi o ka maikaʻi, ʻoi aku ka maikaʻi ma ka laulā. (3) Ka lawe ʻana: E hoʻokomo i ka hydroxypropyl methylcellulose (HPMC) i loko o ka wai e hana i kahi colloid akaka, a e nānā i kona lawe ʻana. ʻO ka nui o ka transmittance, ʻoi aku ka maikaʻi, e hōʻike ana he liʻiliʻi nā insolubles i loko. . Maikaʻi ka permeability o ka reactor vertical, a ʻoi aku ka ʻino o ka reactor horizontal, akā ʻaʻole ia he manaʻo ʻoi aku ka maikaʻi o ka reactor vertical ma mua o ka reactor horizontal. Hoʻoholo ʻia ka maikaʻi o ka huahana e nā kumu he nui. (4) Pākuʻi: ʻO ka nui o ka māhele, ʻoi aku ka kaumaha o ka maikaʻi. ʻO ka kikoʻī kiʻekiʻe ma muli o ka nui o ka hydroxypropyl content i loko, a ʻoi aku ka kiʻekiʻe o ka hydroxypropyl content, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai.
4. He aha ka mea e hoʻolohe ai i ka wā e hoʻohana ai i ka viscosity a me ka mahana o HPMC?
ʻO ka viscosity o ka HPMC he like ia me ka mahana, ʻo ia hoʻi, piʻi ka viscosity i ka emi ʻana o ka mahana. ʻŌlelo maʻamau mākou ʻo ka viscosity o kahi huahana e pili ana i ka hopena o ka hoʻāʻo ʻana i kāna 2% aqueous solution ma kahi mahana o 20 degere Celsius. Ma nā hoʻohana pono, ma nā wahi me kahi ʻokoʻa nui o ka mahana ma waena o ke kauwela a me ka hoʻoilo, pono e hoʻomaopopo ʻia e hoʻohana ʻia ka viscosity haʻahaʻa haʻahaʻa i ka hoʻoilo, ʻoi aku ka maikaʻi o ke kūkulu ʻana. A i ʻole, ke haʻahaʻa ka mahana, e piʻi ka viscosity o ka cellulose, a kaumaha ka lima ke ʻoki ʻia.
5. He aha nā ʻano hoʻoheheʻe o HPMC?
ʻO ke ʻano hoʻoheheʻe wai wela: No ka mea ʻaʻole i hoʻoheheʻe ʻia ka HPMC i ka wai wela, hiki ke hoʻopuehu like ʻia ka HPMC i ka wai wela i ka wā mua, a laila e hoʻoheheʻe koke ʻia ke hoʻomālili. ʻElua mau ʻano maʻamau i wehewehe ʻia penei: 1). Ka nui o ka wai wela a me ka wela a hiki i 70°C. E hoʻohui mālie i ka hydroxypropyl methylcellulose me ka hoʻoulu lohi, e hoʻomaka i ka HPMC e lana ana ma luna o ka wai, a laila e hana mālie i kahi slurry, a hoʻomaha i ka slurry me ka hoʻoulu ʻana. 2). E hoʻohui i 1/3 a i ʻole 2/3 o ka nui o ka wai i makemake ʻia i loko o ka pahu a hoʻomehana iā 70 ° C. E like me ke ʻano o 1), e hoʻopuehu iā HPMC e hoʻomākaukau i ka slurry wai wela; a laila e hoʻohui i ke koena o ka wai anuanu i ka wai wela I loko o ka slurry, e hoʻomaha i ka hui ma hope o ka hoʻoulu ʻana. ʻO ke ʻano o ka hui ʻana o ka pauka: hoʻohui i ka pauka HPMC me ka nui o nā mea pauda ʻē aʻe, hui maikaʻi me ka blender, a laila hoʻohui i ka wai e hoʻoheheʻe ʻia, a laila hiki ke hoʻoheheʻe ʻia ka HPMC i kēia manawa me ka ʻole o ka hui ʻana a me ka agglomerating, no ka mea, ʻo kēlā me kēia kihi liʻiliʻi, he wahi liʻiliʻi wale nō ka HPMC E hoʻoheheʻe koke ka pauka i ka wā e hui ai me ka wai. -Ke hoʻohana nei nā mea hana ʻōpala a me nā mortar i kēia ala. [Hoʻohana ʻia ʻo Hydroxypropyl methyl cellulose (HPMC) ma ke ʻano he mānoanoa a me ka mea mālama wai i loko o ka mortar pauka putty. ]
6. He aha ke ʻano o ka HPMC i hoʻohui ʻia i ka pauka putty?
Ka nui oHPMCHoʻohana ʻia i nā noi maoli e like me ke aniau, ka mahana, ka maikaʻi o ka calcium lehu kūloko, ka ʻano o ka pauka putty, a me ka "maikaʻi i makemake ʻia e nā mea kūʻai aku". Ma ka ʻōlelo maʻamau, aia ma waena o 4 kg a me 5 kg. No ka laʻana, ʻo ka pauka putty i loko o ka decor'> Beijing ka hapa nui o 5 kg; ʻO ka pauda putty ma Guizhou ka nui o 5 kg i ke kauwela a me 4.5 kg i ka hoʻoilo; He liʻiliʻi ka nui o nā mea hoʻohui a Yunnan, maʻamau 3 kg-4 kg a pēlā aku.
Ka manawa hoʻouna: Apr-26-2024