Focus on Cellulose ethers

Pehea e ana i ka viscosity o HPMC?

He aha nā mea e mālama ai no ke ana ʻana i ka viscosity o ka hydroxypropyl methyl celluloseHPMC?Ke hoʻāʻo mākou i ka viscosity o cellulose.I mea e hōʻoia ai i ka pololei o nā hopena hoʻāʻo, pono e nānā kūikawā i nā ʻano ʻehā.

1. Pono nā hōʻailona hana o ka mea hana i nā koi o nā kānāwai hōʻoia metrological national.

ʻO kahydroxypropyl methyl celluloseHoʻohana ʻia ka mea ana viscosity i ka pōʻai hoʻāʻo.Inā pono (hoʻohana pinepine ʻia ka mea hana a i ʻole ke kūlana koʻikoʻi o ke kūlana kūpono), hana ʻia kahi hoʻāʻo ponoʻī waena e hōʻoia i ka hana kūpono o ke ana ʻana a ʻo ka hewa coefficient aia i loko o ka palena i ʻae ʻia, inā ʻaʻole hiki ke loaʻa ka ʻikepili pololei.

2. E nānā pono i ka mahana o ka wai e ana.

He nui nā mea hoʻohana e haʻalele i kēia a manaʻo lākou he mea pili ʻole ka mahana.Hōʻike kā mākou mau hoʻokolohua: inā he 0.5 ℃ ka wela wela, ʻoi aku ka viscosity deviation o kekahi mau wai ma mua o 5%.He hopena nui ka hoʻokaʻawale ʻana o ka mahana i ka viscosity, ka mahana a me ka viscosity.No laila, pono e mālama pono i ka mahana o ka wai i ana ʻia ma kahi kokoke i ka helu wela i ʻōlelo ʻia, a no ke ana pololei ʻana, ʻoi aku ka maikaʻi ʻaʻole ma mua o 0.1 ℃.

3. Ke koho ana i ka ipu ana (outer tube).

No nā viscometer rotary ʻelua barela, e heluhelu pono i ka manual mea kani a hoʻohālikelike i ka rotor (poʻo loko) e like me ia.ʻO ka cylinder waho, inā ʻaʻole e hoʻololi nui ʻia nā hopena ana.No ka viscometer rotational cylinder hoʻokahi, pono ʻole ka radius o ka cylinder waho ma ke kumu.Pono ke ana maoli e emi iho ka anawaena o loko o ka cylinder o waho ma mua o kekahi nui.No ka laʻana, pono ka viscometer rotary NDJ-1 i ka beaker ana a i ʻole ka ipu pahu pololei ʻaʻole i emi ma lalo o 70 mm ke anawaena.Ua hōʻike ʻia nā hoʻokolohua e hiki ke hopena i nā hewa ana nui inā liʻiliʻi ke anawaena o loko o ka moku, ʻoi aku ka nui o ka rotor no.Hoʻohana ʻia ʻo 1.

4, koho pololei i ka rotor a hoʻololi paha i ka wikiwiki, no laila ka waiwai o ka mana mana ma waena o 20-90.

Ke hoʻohana nei kēia ʻano mea kani i ka heluhelu dial me ka pointer, a ʻo ka hui pū ʻana o ke kūpaʻa a me ka haʻalele ʻana i ka heluhelu he 0.5 grids.Inā liʻiliʻi loa ka heluhelu ʻana, e kokoke ana i 5 grids, hiki ke ʻoi aku ka hewa pili ma mua o 10%.Inā koho ʻia ka rotor kūpono a i ʻole ka heluhelu wikiwiki ʻana he 50, hiki ke hoʻemi ʻia ka hewa pili i 1%.Inā hōʻike ka waiwai ma luna o 90, ʻoi aku ka nui o ka torque i hana ʻia e ka pūnāwai, hiki ke kolo a hōʻino i ka lauoho, no laila pono mākou e koho pono i ka rotor a me ka wikiwiki.

Hōʻike kēia pepa i nā mea e pono ai ka nānā ʻana i ke ana ʻana i ka viscosity o ka hydroxypropyl methyl cellulose, me ka manaʻo e hiki i nā ʻike ma luna ke kōkua iā ʻoe e hoʻāʻo.KIMA KIMIKApili i ke kumumanaʻo o "mea hou, mea kūʻai mua, maikaʻi mua".ʻO ka manaʻo o ka hoʻomohala ʻoihana ʻo ke kūkulu ʻana ma luna o ka hilinaʻi lōʻihi a me ka hoʻomohala ʻana, e hoʻomau mau i nā mea hana a me nā ʻenehana, i ka pale ʻana i ka ʻōmaʻomaʻo a me ka hoʻomohala ʻenehana kiʻekiʻe.Makemake ka hui e hui pū me nā huahana kiʻekiʻe kiʻekiʻe a me nā hoa ʻāina no ka manawa lōʻihi, me ka ʻoiaʻiʻo.


Ka manawa hoʻouna: Iune-18-2022
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