Focus on Cellulose ethers

Hydroxypropyl methylcellulose (HPMC) hana hoʻoheheʻe:

Hydroxypropyl methylcellulose (HPMC) hana hoʻoheheʻe:

Ke hoʻohui pololei ʻia nā huahana hydroxypropyl methylcellulose (HPMC) i ka wai, e hoʻoheheʻe lākou a laila e hoʻoheheʻe ʻia, akā lohi a paʻakikī kēia dissolution. ʻEkolu mau ʻano hoʻoheheʻe i manaʻo ʻia ma lalo nei, a hiki i nā mea hoʻohana ke koho i ke ala kūpono loa e like me kā lākou hoʻohana ʻana:

1. Ke ano wai wela: No ka hemo ole o ka hydroxypropyl methylcellulose (HPMC) i ka wai wela, hiki ke hoopuehuia ka hana mua o ka hydroxypropyl methylcellulose (HPMC) i ka wai wela, a laila, i ka wa e maalili ai, ua hoakakaia ekolu A typical method. penei:

1). E hoʻokomo i ka nui o ka wai wela i makemake ʻia i loko o ka ipu a hoʻomehana iā ia ma kahi o 70 ° C. Hoʻohui mālie i ka hydroxypropyl methylcellulose (HPMC) ma lalo o ka hoʻoulu ʻana, hoʻomaka ka hydroxypropyl methylcellulose (HPMC) e lana ma luna o ka ʻili o ka wai, a laila hana mālie i kahi slurry, hoʻoluʻu i ka slurry ma lalo o ka hoʻoulu ʻana.

2). E hoʻomoʻa i 1/3 a i ʻole 2/3 (ka nui i makemake ʻia) o ka wai i loko o ka pahu a hoʻomehana iā 70 ° C. E like me ke ʻano o ka 1), e hoʻopuehu i ka hydroxypropyl methylcellulose (HPMC) e hoʻomākaukau i ka slurry wai wela; A laila e hoʻohui i ke koena o ka wai anuanu a i ʻole ka wai hau i loko o ka pahu, a laila e hoʻohui i ka slurry wai wela hydroxypropyl methylcellulose (HPMC) i ʻōlelo ʻia ma luna aʻe i ka wai anuanu, a hoʻoulu, a laila hoʻomaha i ka hui.

3). E hoʻohui i 1/3 a i ʻole 2/3 o ka nui o ka wai i makemake ʻia i loko o ka pahu a hoʻomehana iā 70 ° C. E like me ke ʻano o ka 1), e hoʻopuehu i ka hydroxypropyl methylcellulose (HPMC) e hoʻomākaukau i ka slurry wai wela; Hoʻohui ʻia ke koena o ka wai anuanu a i ʻole ka wai hau i ka slurry wai wela a hoʻomaha ʻia ka hui ʻana ma hope o ka hoʻoulu ʻana.

2. ʻO ke ʻano o ka hui ʻana o ka pauka: ʻo ka hydroxypropyl methylcellulose (HPMC) pauka pauka a me ka nui like a i ʻole ka nui o nā mea pauka ʻē aʻe e hoʻopuehu piha ʻia e ka hui ʻana maloʻo, a laila hoʻoheheʻe ʻia i loko o ka wai, a laila hiki ke hoʻoheheʻe ʻia ka hydroxypropyl methylcellulose Base cellulose (HPMC) me ka ʻole agglomeration. . 3. ʻO keʻano o ka hoʻoheheʻeʻana i nā meaʻeleʻele: pre-disperse a iʻole ka wai hydroxypropyl methylcellulose (HPMC) me nā mea hoʻohenehene e like me ka ethanol, ethylene glycol a iʻole kaʻaila, a laila e hoʻoheheʻe i ka wai. I kēia manawa, hiki ke hoʻoheheʻe ʻia ka hydroxypropyl methylcellulose (HMC).


Ka manawa hoʻouna: Mei-09-2023
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