Pehea e mālama ai a ʻike i ka viscosity o ka hydroxypropyl methylcellulose?

He hōʻailona koʻikoʻi ka viscosity o ka hydroxypropyl methylcellulose.

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, ʻo K ka mea mau o ka viscometer, d e hōʻike ana i ka mānoanoa ma kahi mahana mau, t pili i ka manawa mai luna a lalo o ka viscometer, ʻo ia ka lua, paʻakikī kēia ʻano hana a ʻo ia hoʻi. he 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 ka mea i hana ʻia i kēia manawa 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 i loko 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 me ka viscosity inversely proportional i ka ikaika paʻa.ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka haʻahaʻa o ka ikaika, maʻamau ka viscosity o 100,000 S kūpono.