Hydroxypropyl methyl cellulose, ʻike ʻoe?

1.HPMCua māhele ʻia i ke ʻano koke a me ke ʻano hoʻopuehu wikiwiki.

Hoʻopili ʻia ke ʻano hoʻopuehu wikiwiki HPMC me ka leka S, a pono e hoʻohui ʻia ka glyoxal i ka wā o ke kaʻina hana.

ʻAʻole hoʻohui ka HPMC i nā leka, e like me "100000" ʻo ia hoʻi "100000 viscosity.

2. Me ka S a me ka ole, he okoa na ano

Puka koke ʻo HPMC i ka wā e hālāwai ai me ka wai anuanu a nalowale i loko o ka wai. I kēia manawa, ʻaʻohe viscosity o ka wai, no ka mea, hoʻopuehu wale ʻia ka HPMC i ka wai me ka ʻole o ka hoʻoheheʻe maoli ʻana. Ma hope o ʻelua mau minuke, piʻi mālie ka viscosity o ka wai, e hana ana i kahi colloid mānoanoa mānoanoa.

Hiki ke hoʻopuehu koke ʻia ka HPMC i ka wai wela ma kahi o 70°C. Ke hāʻule ka mahana i kahi mahana, e ʻike mālie ʻia ka viscosity a hiki i ka hana ʻana o kahi colloid viscous transparent.

3.With a i ole S, okoa ke kumu

Hiki ke hoʻohana wale ʻia ka HPMC i ka pauka putty a me ka mortar. I loko o ke kolu wai, pena a me nā huahana holoi, e hui pū ʻia a ʻaʻole hiki ke hoʻohana.

Puka kokeHPMCLoaʻa iā ia ka laulā o nā noi a hiki ke hoʻohana ʻia i ka pauka putty, mortar, ke kāpili wai, ka pena, a me nā huahana holoi me ka ʻole o nā contraindications.

4. Dissolving ala

4-1. E lawe i ka nui o ka wai wela i makemake ʻia, e hoʻokomo i loko o kahi pahu a wela iā ia ma luna o 80 ° C, a hoʻohui mālie i kēia huahana ma lalo o ka hoʻoulu ʻana. Ke lana nei ka cellulose ma ka ʻili wai i ka wā mua, akā ua hoʻopuehu mālie ʻia e hana i kahi slurry like. Hoʻoluʻu ʻia ka hopena i ka wā e hoʻoulu ai.

4-2. ʻO kahi ʻē aʻe, e wela i ka 1/3 a i ʻole 2/3 o ka wai wela ma luna o 85 ° C, e hoʻohui i ka cellulose e loaʻa ai kahi slurry wai wela, a laila e hoʻohui i ke koena o ka wai anuanu, e hoʻomau i ka hoʻoulu ʻana, a hoʻomaha i ka hui ʻana.

4-3. Maikaʻi ka mesh o ka cellulose, a aia ia ma ke ʻano he mau ʻāpana liʻiliʻi i loko o ka pauka i hoʻoulu ʻia, a hemo koke i ka wā e hui ai i ka wai e hana i ka viscosity i koi ʻia.

4-4. E hoʻohui mālie a me ke kaulike i ka cellulose ma ka lumi wela, a hoʻomau i ka hoʻoulu ʻana a hiki i ka hoʻokumu ʻia ʻana o kahi hopena akaka.

5. He aha nā mea e pili ana i ka paʻa wai o ka hydroxypropyl methyl cellulose?

5-1. Cellulose ether HPMC homogeneity

Hāʻawi like ʻia ka HPMC, methoxyl a me ka hydroxypropoxyl, a ʻoi aku ka nui o ka paʻa wai.

5-2. Cellulose ether HPMC wela gel wela

ʻOi aku ka kiʻekiʻe o ka wela gel wela, ʻoi aku ka kiʻekiʻe o ka paʻa wai; a i ʻole, ʻoi aku ka haʻahaʻa o ka paʻa wai.

5-3. Cellulose Etera HPMC Viscosity

Ke piʻi ka viscosity o HPMC, piʻi pū ka nui o ka mālama ʻana i ka wai; ke piʻi ka viscosity i kahi pae, ʻoi aku ka maʻalahi o ka piʻi ʻana o ka paʻa wai.

6.Addition nui o cellulose etera HPMC

ʻOi aku ka nui o ka cellulose etherHPMCi hoʻohui ʻia, ʻoi aku ka kiʻekiʻe o ka paʻa wai a ʻoi aku ka maikaʻi o ka hopena paʻa wai.

Ma ka laulā o 0.25-0.6%, ua piʻi wikiwiki ka paʻa wai me ka piʻi ʻana o ka nui o ka hoʻohui; i ka wā i hoʻonui hou ʻia ai ka nui o ka hoʻohui ʻana, ua lohi ka piʻi ʻana o ka nui o ka mālama ʻana i ka wai.