E kamaʻilio e pili ana i ka hydroxypropyl methyl celluloseHPMCa pehea e ana i kona viscosity. ʻO ka viscosity maʻaneʻi e pili ana i ka viscosity iʻikeʻia, he mea nui ia i ka hydroxypropyl methyl cellulose.
Kūlana. ʻO nā ʻano ana maʻamau, ʻo ia ke ana viscosity rotational, ana viscosity capillary a me ke ana viscosity hāʻule. ʻO ke ʻano o ka hoʻoholo ʻana o ka hydroxypropyl methyl cellulose ʻo ia ka capillary adhesion.
ʻO ke ʻano o ka hoʻoholo degere, me ka hoʻohana ʻana i ka viscometer Uchs. ʻO ka mea maʻamau, ʻo ka hoʻoholo ʻana o ka haʻina he 2% wai wai, ʻo ke kumu: V=Kdt. ʻO V ka viscosity i ka mpa. s a ʻo K ka viscometer mau.
ʻO D ka mānoanoa ma ka wela mau a ʻo T ka manawa mai luna a lalo ma o ka viscometer i kekona. ʻOi aku ka paʻakikī o kēia ʻano hana, inā he mea hiki ʻole ke hoʻonā.
He mea maʻalahi nā huaʻōlelo e hana hewa, paʻakikī ke ʻike i ka maikaʻi o ka hydroxypropyl methyl cellulose. I kēia manawa, hoʻohana maʻamau ia e ana i ka viscosity o ka rotary viscometer, ka hoʻohana maʻamau ma Kina.
ʻO ke kumu o ka viscometer NDJ-1 ʻo η=Kα. ʻO η ka viscosity, ʻo ia hoʻi i ka mpa. s, K ka helu helu o ka viscometer, a ʻo α ka heluhelu ʻana o ka ʻōkuhi viscometer.
Hydroxypropyl methyl cellulose 2% viscosity test method:
1, kūpono kēia ʻano no ka hoʻoholo ʻana i ka viscosity dynamic o nā wai non-Newtonian (kahi polymer solution, suspension, emulsion dispersion liquid a surfactant solution, etc.).
2. Nā mea hana a me nā mea hana
2.1 Rotary viscometer (NdJ-1 a me NDJ-4 e koi ʻia e Chinese Pharmacopoeia)
2.2 ʻauʻau wai ʻauʻau wela mau ka pololei o ka mahana 0.10C
2.3 He 0.20C ka degere helu ana wela, i hooiaioia i kela manawa keia manawa.
2.4 E mālama ʻia nā Viscometers me nā ana hoʻopaʻa alapine (e like me NDJ-1 a me NDJ-4). Ka pololei o 1%. A
8. Ua kaupaona pono 'ia ka la'ana o Og a waiho 'ia i loko o ka bea 400mL ki'eki'e malo'o. E hoʻohui i kahi 100mL o 80-90 degere wai wela a hoʻoulu no 10 mau minuke e hoʻokaʻawale.
E hoʻopuehu like, e hoʻoulu a hoʻohui i ka wai anuanu i 400mL ka nui. I kēia manawa, e hoʻoulu mau no 30min e hana i kahi solution 2% (W/W), a waiho i loko o ka friji no ka ʻauʻau hau e maʻalili a hiki i ka hana ʻana i ka hau lahilahi ma ka ʻili.
Lawe i waho a hoʻokomo i loko o ka pahu wela mau e mālama i ka wela waena i 20 ℃ 0.1 ℃.
3.1 E hoʻokō ʻia ka hoʻokomo ʻana a me ka hana ʻana o ka mea hana e like me nā ʻōlelo aʻoaʻo o ka mea hana, a e koho ʻia ka rotor kūpono a me ka rotor e like me ka laulā viscosity o ka huahana i hoʻāʻo ʻia a me nā ʻōlelo o ka pharmacopoeia ma lalo o ka kikokikona o ka huahana
Ka māmā holo.
3.2 Hoʻoponopono i ka mahana wela mau o ka wai e like me ka hoʻoholo ʻana ma lalo o kēlā me kēia mea lāʻau.
3.3 Ua waiho ʻia ka huahana hoʻāʻo i loko o ka pahu i kuhikuhi ʻia e ka mea hana, a ua ana ʻia ka Angle deflection (a) e like me ke kānāwai ma hope o 30 mau minuke o ka wela mau. E hoʻopau i ke kaʻa a hoʻomaka hou no ka hoʻoholo ʻana
ʻAʻole pono ka ʻokoʻa ma waena o nā kumu waiwai ma mua o 3%, inā ʻaʻole pono ke ana ʻekolu.
3.4 E helu i ke kumu waiwai o nā ho'āʻo ʻelua e like me ke ʻano e loaʻa ai ka viscosity dynamic o ka huahana i hoʻāʻo ʻia.
4. E hoʻopaʻa a helu
4.1 E ho'opa'a i ke kŘkohu kŘkohu rotary viscometer, helu rotor a me ka mämä holo i ho'ohana 'ia, viscometer mau (K 'waiwai), ana wela, a me këia ana. Waiwai.
Ka helu helu o 4.2
Dynamic viscosity (MPa”s)=Ka kahi ʻo K ka viscometer mau i ana ʻia me ka wai maʻamau o ka viscosity i ʻike ʻia a ʻo A ke kihi hoʻoheheʻe.
Ka manawa hoʻouna: Apr-25-2024