Focus on Cellulose ethers

Ojiji nke viscosities dị iche iche nke cellulose na ngwaahịa

A na-eji ọkwa ụlọ ọrụ hydroxypropyl methylcellulose mee ihe maka ngwa agha (ebe a na-ezo aka na cellulose dị ọcha, ewezuga ngwaahịa emezigharịrị) dị iche site na viscosity, a na-ejikarị akara ule ndị a (nkeji bụ viscosity):

Obere viscosity: 400

A na-eji ya eme ihe maka ngwa agha na-ebuli onwe ya elu; viscosity dị ala, ọ bụ ezie na njide mmiri adịghị mma, mana nhazi ọkwa dị mma, na njupụta ngwa agha dị elu.

Ọkara na viscosity dị ala: 20000-40000

A na-eji ya eme ihe maka nrapado taịlị, ihe na-eme ka ọ dị nro, ngwa agha na-egbochi mgbawa, ngwa mkpuchi mkpuchi ọkụ, wdg; ezi ihe owuwu, obere mmiri, nnukwu ngwa agha njupụta.

Viscosity ọkara: 75000-100000

A na-ejikarị eme putty; ezigbo njide mmiri.

Nnukwu viscosity: 150000-200000

A na-ejikarị ya maka polystyrene urughuru thermal mkpuchi ngwa ngwa roba ntụ ntụ na vitrified microbead thermal ikpuchi ngwa agha; viscosity dị elu, ngwa agha adịghị mfe ịdapụ, a na-emeziwanye ihe owuwu ahụ.

N'ime ngwa ndị bara uru, ekwesịrị iburu n'uche na n'ebe ndị nwere nnukwu okpomọkụ dị iche n'etiti oge okpomọkụ na oyi, a na-atụ aro ka iji obere viscosity dị ntakịrị na oyi, nke na-eme ka ọ dịkwuo mma n'ịrụ ụlọ. Ma ọ bụghị ya, mgbe okpomọkụ dị ala, viscosity nke cellulose ga-abawanye, na mmetụta aka ga-adị arọ mgbe ịchacha.

N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejigide mmiri. N'ịtụle ọnụ ahịa, ọtụtụ ụlọ ọrụ na-ekpo ọkụ na-ekpo ọkụ na-eji dochie ọkara na obere viscosity cellulose (20000-40000) na cellulose ọkara-viscosity (75000-100000) iji belata ego mgbakwunye. Ekwesịrị ịhọrọ ngwaahịa ngwa ngwa site na ndị na-emepụta mgbe niile ma chọpụta ya.

Mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC:

Viscosity nke HPMC na-adaba na ọnọdụ okpomọkụ, ya bụ, viscosity na-abawanye ka okpomọkụ na-ebelata. Viscosity nke ngwaahịa anyị na-ezokarị aka na nsonaazụ nnwale nke 2% mmiri mmiri na-ekpo ọkụ na ogo 20 Celsius.


Oge nzipu: Mar-06-2023
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