He hōʻailona koʻikoʻi o ka hydroxypropyl methylcellulose ka viscosity, ʻo nā ʻano ana i hoʻohana maʻamau ʻia me ka rotational viscometry, capillary viscometry a me drop viscometry.
Ua ana mua ʻia ʻo Hydroxypropyl methylcellulose me ka hoʻohana ʻana i ka viscometry capillary me ka hoʻohana ʻana i ka viscometer Ubbelohde. ʻO ka mea maʻamau, ʻo ka hāʻina ana he ʻano wai o 2, ʻo ke kumu: V = Kdt. Hōʻike ʻo V i ka viscosity, K ka mea mau o ka viscometer, d hōʻike i ka mānoanoa ma kahi mahana mau, t pili i ka manawa mai luna a lalo o ka viscometer, ʻo ka ʻāpana ka lua, paʻakikī kēia ʻano hana a ʻo ia hoʻi. He mea maʻalahi ke hana hewa, a he paʻakikī ke hoʻokaʻawale i ka maikaʻi o ka hydroxypropyl methylcellulose.
ʻO ka pilikia o ka delamination o ke kāpili kūkulu hale kahi pilikia nui i loaʻa e nā mea kūʻai. ʻO ka mea mua, pono e noʻonoʻo ʻia ka pilikia o nā mea maka no ka papa hana kāpili. ʻO ke kumu nui o ke kūkulu ʻia ʻana o ke kāpili ʻo ia ka polyvinyl alcohol (PVA) a me ka hydroxypropyl methylcellulose (HPMC) ʻaʻole kūpono. ʻO ke kumu ʻelua, ʻaʻole lawa ka manawa hoʻoulu, a ʻaʻole maikaʻi ka hana mānoanoa o ke kāpili kūkulu.
Pono e hoʻohana ʻia ka hydroxypropyl methylcellulose (HPMC) o kēia mea i hana ʻia i ke kāpili hana, no ka mea, ua hoʻopuehu ʻia ka hydroxypropyl methylcellulose (HPMC) i ka wai a ʻaʻole hiki ke hoʻoheheʻe maoli ʻia, a piʻi mālie ka viscosity o ka wai ma kahi o 2 mau minuke, e hana ana i Transparent viscous colloid. .
Ke hui pū ʻia nā mea hoʻoheheʻe wela i ka wai anuanu, e lūlū koke lākou i ka wai wela a nalowale i ka wai wela. Ke hāʻule ka mahana i kahi mahana, e ʻike mālie ʻia ka viscosity a hiki i ka hana ʻana o kahi colloid viscous transparent. ʻO Hydroxypropyl i loko o ka hoʻopili kūkulu ʻana ʻO ka nui o ka HPMC i ʻōlelo ʻia he 2-4kg.
ʻO ka Hydroxypropyl methylcellulose (HPMC) he mau waiwai kemika paʻa, kūpaʻa ka maʻi a me ka paʻa wai maikaʻi i nā mea hoʻopili kūkulu, a ʻaʻole pili i nā loli pH. Hiki ke hoʻohana ʻia mai 100,000 S a 200,000 S, akā ʻoi aku ka kiʻekiʻe o ka viscosity i ka hana ʻana, ʻoi aku ka maikaʻi, a ʻoi aku ka viscosity i inversely proportional i ka ikaika paʻa. ʻO ke kiʻekiʻe o ka viscosity, ʻo ka haʻahaʻa o ka ikaika, maʻamau ka viscosity o 100,000 S kūpono.
Ka manawa hoʻouna: Apr-20-2023