Nā pilikia maʻamau me ka Hydroxypropyl Methyl Cellulose

1. He aha ka noi nui ohydroxypropyl methylcellulose (HPMC)?
Hoʻohana nui ʻia ʻo HPMC i nā mea hana, nā uhi, nā resins synthetic, nā ceramics, nā lāʻau lapaʻau, nā meaʻai, nā textiles, nā mahiʻai, nā mea hoʻonaninani, ka paka a me nā ʻoihana ʻē aʻe. Hiki ke hoʻokaʻawale ʻia ka HPMC i ka papa hana, ka meaʻai a me ka lāʻau lapaʻau e like me ke kumu. I kēia manawa, ʻo ka hapa nui o nā huahana home ka pae kūkulu. I ka papa hana, hoʻohana ʻia ka pauka putty i ka nui, ma kahi o 90% e hoʻohana ʻia no ka pauka putty, a hoʻohana ʻia ke koena no ka mortar sima.

2. He aha ke ʻala o ka hydroxypropyl methylcellulose (HPMC)?
ʻO ka HPMC i hana ʻia e ke ʻano solvent e hoʻohana i ka toluene a me ka isopropanol e like me nā solvents. Inā ʻaʻole maikaʻi loa ka holoi ʻana, loaʻa kekahi ʻala i koe.

3. He aha nā ʻano hoʻoheheʻe o ka hydroxypropyl methylcellulose (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 hemo koke i ka wā i maʻalili. ʻElua mau ʻano maʻamau i wehewehe ʻia penei:
1) E hoʻokomo i ka nui o ka wai wela i makemake ʻia i loko o ka pahu a wela iā ia ma kahi o 70 ° C. Hoʻohui mālie ʻia ka hydroxypropyl methylcellulose ma lalo o ka hoʻoulu ʻana i ka lohi, i ka mua ua lana ka HPMC ma luna o ka ʻili o ka wai, a laila hana mālie i kahi slurry, i hoʻoluʻu ʻia ma lalo o 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 wela iā 70 ° C, e hoʻopuehu i ka HPMC e like me ke ʻano o 1), a hoʻomākaukau i ka slurry wai wela; a laila e hoʻohui i ke koena o ka wai anuanu i ka slurry wai wela, ua maʻalili ka hui ʻana ma hope o ka hoʻoulu ʻana.

ʻO ke ʻano o ka hui ʻana o ka pauka: hui pū i ka pauka HPMC me ka nui o nā mea pauda ʻē aʻe, hui pono me ka mea hui, a laila hoʻohui i ka wai e hoʻoheheʻe ʻia, a laila hiki ke hoʻoheheʻe ʻia ʻo HPMC i kēia manawa me ka ʻole o ka agglomeration, no ka mea he wahi HPMC liʻiliʻi wale nō ma kēlā me kēia kihi liʻiliʻi ʻO ka pauka, e hoʻoheheʻe koke ʻia ke pili me ka wai. ——Ke hoʻohana nei nā mea hana i ka pauda putty a me ka motar i kēia ʻano hana. [Hydroxypropyl methylcellulose (HPMC) hoʻohana ʻia ma ke ʻano he mānoanoa a me ka mea mālama paʻa wai i loko o ka mortar pauka putty. ]

4. Pehea e hoʻoholo ai i ka maikaʻi o ka hydroxypropyl methylcellulose (HPMC) maʻalahi a intuitively?
(1) Keʻokeʻo: ʻOiai ʻaʻole hiki i ka keʻokeʻo ke hoʻoholo inā he maʻalahi ka HPMC e hoʻohana, a inā hoʻohui ʻia nā mea keʻokeʻo i ka wā o ke kaʻina hana, e pili ana ia i kona maikaʻi. Eia naʻe, ʻo ka hapa nui o nā huahana maikaʻi he keʻokeʻo maikaʻi.
(2) Maikaʻi: ʻO ka maikaʻi o HPMC maʻamau he 80 mesh a me 100 mesh, a he 120 mesh ka liʻiliʻi. ʻO ka hapa nui o HPMC i hana ʻia ma Hebei he 80 mesh. ʻO ka ʻoi aku ka maikaʻi, ʻo ka ʻōlelo maʻamau, ʻoi aku ka maikaʻi.
(3) Light transmittance: kauhydroxypropyl methylcellulose (HPMC)i loko o ka wai e hana i kahi colloid alohilohi, a nānā i kona māmā māmā. ʻOi aku ka nui o ka transmittance māmā, ʻoi aku ka maikaʻi, e hōʻike ana he liʻiliʻi nā insolubles i loko. . ʻOi aku ka maikaʻi o ka permeability o nā reactors vertical, a ʻoi aku ka maikaʻi o nā reactors horizontal, akā ʻaʻole ia he manaʻo ʻoi aku ka maikaʻi o nā reactors vertical ma mua o nā reactors horizontal, a ua hoʻoholo ʻia ka maikaʻi o ka huahana e nā kumu he nui.
(4) Kaumaha kikoʻī: ʻO ka nui o ka umekaumaha kikoʻī, ʻoi aku ka ʻoi aku ka maikaʻi. Nui ka kikoʻī, maʻamau no ka mea he kiʻekiʻe ka ʻike o ka hui hydroxypropyl i loko, a ʻoi aku ka kiʻekiʻe o ka ʻike o ka hui hydroxypropyl, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai.

5. He aha ka ʻokoʻa ma waena o ke ʻano koke wai anuanu a me ke ʻano wela wela o ka hydroxypropyl methylcellulose i ka hana hana?
ʻO ke ʻano hoʻopuehu wikiwiki o ka HPMC ua mālama ʻia me ka glyoxal, a hoʻopuehu koke ia i ka wai anuanu, akā ʻaʻole ia e hoʻoheheʻe maoli. Hoʻoheheʻe wale ia ke piʻi ka viscosity. ʻAʻohe lāʻau lapaʻau o ke ʻano koke me ka glyoxal. Inā nui ka nui o ka glyoxal, e wikiwiki ka hoʻopuehu ʻana, akā e piʻi mālie ka viscosity, a inā liʻiliʻi ka nui, ʻo ia ka ʻaoʻao.

6. He aha ka viscosity kūpono o ka hydroxypropyl methylcellulose (HPMC)?
ʻO ka pauka Putty maʻamau he 100,000 yuan, a ʻoi aku ka kiʻekiʻe o nā koi no ka mortar, a ʻo 150,000 yuan e koi ʻia no ka hoʻohana maʻalahi. Eia kekahi, ʻo ka hana nui o ka HPMC ʻo ka mālama ʻana i ka wai, a ukali ʻia e ka mānoanoa. I loko o ka pauka putty, ʻoiai he maikaʻi ka paʻa ʻana o ka wai a haʻahaʻa ka viscosity (70,000-80,000), hiki nō hoʻi. ʻOiaʻiʻo, ʻoi aku ka kiʻekiʻe o ka viscosity, ʻoi aku ka maikaʻi o ka paʻa wai pili. Ke ʻoi aku ka viscosity ma mua o 100,000, e hoʻopilikia ka viscosity i ka paʻa wai. ʻAʻole nui hou.

7. He aha nā hōʻailona loea nui o ka hydroxypropyl methylcellulose (HPMC)?
ʻO ka hydroxypropyl content a me ka viscosity, hopohopo ka hapa nui o nā poʻe i kēia mau hōʻailona ʻelua. ʻOi aku ka maikaʻi o ka mālama ʻana i ka wai i ka poʻe me ka hydroxypropyl kiʻekiʻe. ʻO ka mea nona ka viscosity kiʻekiʻe, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai, ma ke ʻano (ʻaʻole loa), a ʻoi aku ka maikaʻi o ka mea nona ka viscosity kiʻekiʻe i loko o ka momi sima.

8. He aha nā mea maka nui o ka hydroxypropyl methylcellulose (HPMC)?
ʻO nā mea waiwai nui o ka hydroxypropyl methylcellulose (HPMC): ka pulupulu hoʻomaʻemaʻe, ka methyl chloride, propylene oxide, a me nā mea waiwai ʻē aʻe, caustic soda, acid, toluene, isopropanol, etc.

9. He aha ka hana nui o ka noi oHPMCi loko o ka pauda putty, a hiki ke hana kemika?
I ka pauka putty, hoʻokani ʻo HPMC i ʻekolu hana o ka mānoanoa, paʻa wai a me ke kūkulu ʻana.

Mānoanoa: Hiki ke mānoanoa ka cellulose e hoʻopaneʻe a mālama i ka hoʻonā ʻaʻahu i luna a i lalo, a pale aku i ka haʻalulu.
Ka paʻa ʻana o ka wai: e hoʻomaloʻo mālie i ka pauka putty, a kōkua i ka calcium lehu e hana ma lalo o ka hana o ka wai.
Hana: He hopena lubricating ka Cellulose, hiki ke hana i ka pauka putty i ke kūkulu maikaʻi.

ʻO ka hoʻohui ʻana i ka wai i ka pauka putty a kau ʻia ma ka paia he hopena kemika, no ka mea, ua hana ʻia nā mea hou. Inā wehe ʻoe i ka pauda putty ma ka paia mai ka paia, wili a lilo i pauda, ​​a hoʻohana hou, ʻaʻole ia e hana no ka mea ua hana ʻia nā mea hou (calcium carbonate). ) kekahi.

ʻO nā mea nui o ka pauka calcium lehu: kahi 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 Aia ka calcium lehu 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, kōkua i ka hana maikaʻi o ka calcium.

10. ʻO ka HPMC he cellulose ether non-ionic, no laila he aha ka non-ionic?

Ma ka ʻōlelo a ka poʻe kamaʻāina, ʻo nā non-ions nā mea i hoʻokaʻawale ʻole i ka wai. ʻO ka Ionization e pili ana i ke kaʻina hana i hoʻokaʻawale ʻia kahi electrolyte i nā ion i hoʻopaʻa ʻia e hiki ke neʻe manuahi i loko o kahi mea hoʻoheheʻe kūikawā (e like me ka wai, ka waiʻona). No ka laʻana, ʻo ka sodium chloride (NaCl), ka paʻakai a mākou e ʻai ai i kēlā me kēia lā, hoʻoheheʻe ʻia i loko o ka wai a hoʻoheheʻe ʻia e hana i nā ion sodium hiki ke hoʻoneʻe ʻia (Na+) i hoʻopaʻa maikaʻi ʻia a me nā ion chloride (Cl) i hoʻoili ʻole ʻia. ʻO ia hoʻi, ke hoʻokomo ʻia ka HPMC i loko o ka wai, ʻaʻole ia e hoʻokaʻawale i loko o nā ion i kau ʻia, akā aia ma ke ʻano o nā mole.

11. He aha ka pili ana i ka mahana gel o ka hydroxypropyl methylcellulose?
ʻO ka mahana gel o HPMC e pili ana i kona methoxy content, ʻo ka haʻahaʻa o ka methoxy content, ʻoi aku ka kiʻekiʻe o ka mahana gel.

12. Aia kekahi pilina ma waena o ka kulu o ka pauda putty a me HPMC?
ʻO ka lilo o ka pauka o ka pauka putty e pili nui i ka maikaʻi o ka calcium lehu, a ʻaʻohe mea liʻiliʻi me HPMC. ʻO ka haʻahaʻa o ka calcium haʻahaʻa o ka calcium hina a me ka ratio kūpono ʻole o CaO a me Ca(OH)2 i loko o ka calcium hina e lilo ai ka pauda. Inā pili ia me ka HPMC, a laila, inā he maika'i ka mālama 'ana o ka wai i ka HPMC, e lilo nō ho'i ia i ka pauda.

13. He aha ka ʻokoʻa ma waena o ke ʻano koke wai anuanu a me ke ʻano hoʻoheheʻe wela o ka hydroxypropyl methylcellulose i ka hana hana?
ʻO ke ʻano hoʻopuehu wikiwiki oHPMClapaʻau ʻia me ka glyoxal, a hoʻopuehu koke i ka wai anuanu, akā ʻaʻole ia e hoʻoheheʻe maoli. Hoʻoheheʻe wale ia ke piʻi ka viscosity. ʻAʻohe lāʻau lapaʻau o ke ʻano koke me ka glyoxal. Inā nui ka nui o ka glyoxal, e wikiwiki ka hoʻopuehu ʻana, akā e piʻi mālie ka viscosity, a inā liʻiliʻi ka nui, ʻo ia ka ʻaoʻao.