ʻO ka hoʻohana ʻana i ka hydroxypropyl methylcellulose

1. He aha ka noi nui o ka hydroxypropyl methylcellulose (HPMC)?

Pane: Hoʻohana nui ʻia ʻo HPMC i nā mea hana, nā uhi, nā resins synthetic, seramika, lāʻau lapaʻau, meaʻai, textiles, mahiʻai, mea hoʻonaninani, paka a me nā ʻoihana ʻē aʻe. Hiki ke hoʻokaʻawale ʻia ka HPMC i ka papa hana, ka papa meaʻai a me ka papa lāʻau lapaʻau e like me ke kumu. I kēia manawa, ʻo ka hapa nui o nā huahana home ka pae kūkulu. I ka papa hana, hoʻohana ʻia ka pauka putty i ka nui nui, ma kahi o 90% e hoʻohana ʻia no ka pauka putty, a hoʻohana ʻia ke koena no ka mortar sima a me ke kāpili.

2. He nui nā ʻano hydroxypropyl methylcellulose (HPMC), a he aha nā ʻokoʻa o kā lākou hoʻohana ʻana?

Pane: Hiki ke hoʻokaʻawale ʻia ka HPMC i ke ʻano koke a me ke ʻano wela wela. Puka koke nā ʻano huahana i ka wai anuanu a nalowale i loko o ka wai. I kēia manawa, ʻaʻohe viscosity o ka wai no ka mea ua hoʻopuehu wale ʻia ka HPMC i ka wai me ka ʻole o ka hemo maoli. Ma kahi o 2 mau minuke, piʻi mālie ka viscosity o ka wai, e hana ana i kahi colloid viscous transparent. ʻO nā huahana hoʻoheheʻe wela, ke hui ʻia me ka wai anuanu, hiki ke hoʻopuehu koke i ka wai wela a nalowale i ka wai wela. Ke hāʻule ka mahana i kekahi mahana, e ʻike mālie ʻia ka viscosity a hiki i ka hana ʻana i kahi colloid viscous transparent. Hiki ke hoʻohana wale ʻia ke ʻano hoʻoheheʻe wela i ka pauka putty a me ka mortar. I loko o ke kāpili wai a me ka pena, e hui pū ʻia nā mea ʻaʻole hiki ke hoʻohana. Loaʻa i ka ʻano koke ka laulā o nā noi. Hiki ke hoʻohana ʻia i loko o ka pauka putty a me ka mortar, a me ka wai kelu a me ka pena, me ka ʻole o nā contraindications.

3. He aha nā ʻano hoʻoheheʻe o ka hydroxypropyl methylcellulose HPMC?

Pane: Keʻano hoʻoheheʻe wai wela: No ka mea, ʻaʻole i hoʻoheheʻe ʻia ka HPMC i ka wai wela, hiki ke hoʻopuehu like ʻia ka HPMC i ka wai wela i ka wā mua, a laila hemo koke i ka wā i maʻalili. ʻElua mau ʻano maʻamau i wehewehe ʻia penei:

1), 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 wela iā 70 ° C, e hoʻopuehu i ka HPMC e like me ke ʻano o 1), a hoʻomākaukau i ka slurry wai wela; a laila e hoʻohui i ke koena o ka wai anuanu i ka slurry wai wela, ua maʻalili ka hui ʻana ma hope o ka hoʻoulu ʻana.

ʻO ke ʻano o ka hui ʻana o ka pauda: hoʻohui i ka pauka HPMC me ka nui o nā mea pauda ʻē aʻe, e hui pono me ka mea hui, a laila hoʻohui i ka wai e hoʻoheheʻe ʻia, a laila hiki ke hoʻoheheʻe ʻia ka HPMC i kēia manawa me ka ʻole o ka hoʻohuihui ʻana, no ka mea he liʻiliʻi wale ka HPMC i kēlā me kēia liʻiliʻi. kihi Pauda, ​​e hoʻoheheʻe koke i ka wā e pili ana me ka wai. ——Ke hoʻohana nei nā mea hana i ka pauda putty a me ka motar i kēia ʻano hana. [Hydroxypropyl methylcellulose (HPMC) hoʻohana ʻia ma ke ʻano he mānoanoa a me ka mea mālama paʻa wai i loko o ka mortar pauka putty.

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