1. He aha ke kumu nui o ka hydroxypropyl methyl cellulose (HPMC)?
Hoʻohana nui ʻia ʻo HPMC i nā mea hana, nā uhi, nā resins synthetic, nā ceramics, nā lāʻau lapaʻau, nā meaʻai, nā textiles, nā mahiʻai, nā mea hoʻonaninani, ka paka a me nā ʻoihana ʻē aʻe.Hiki ke hoʻokaʻawale ʻia ka HPMC i ka papa hana, ka meaʻai a me ka lāʻau lapaʻau e like me kāna kumu.I kēia manawa, ʻo ka hapa nui o nā huahana kūloko o ke kūkulu hale.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. Nui nā ʻano o ka hydroxypropyl methyl cellulose (HPMC).He aha ka ʻokoʻa ma waena o kā lākou hoʻohana ʻana?
Hiki ke hoʻokaʻawale ʻia ka HPMC i ke ʻano koke a me ke ʻano hoʻoheheʻe wela.Hoʻopuehu koke ʻia nā huahana ʻano koke i ka wai anuanu a nalowale i 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 kahi o 2 mau minuke, piʻi mālie ka viscosity o ka wai, e hana ana i kahi colloid viscous transparent.ʻO ka huahana hoʻoheheʻe wela, i ka wā e hui ai i ka wai anuanu, hiki ke hoʻopuehu koke i ka wai wela a nalowale i ka wai wela.Ke hāʻule ka mahana i kahi mahana, ʻike mālie ka viscosity a hiki i ka hoʻokumu ʻana o 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, hiki ke clumping a ʻaʻole hiki ke hoʻohana.Loaʻa i ka ʻano koke ka laulā o nā noi.Hiki ke hoʻohana ʻia i ka pauka putty a me ka mortar, a me ke kāpili wai a me ka pena.ʻAʻohe contraindication.
3. He aha nā ʻano hoʻoheheʻe o ka hydroxypropyl methylcellulose HPMC?
ʻano hoʻoheheʻe wai wela: No ka hemo ole o ka HPMC i ka wai wela, hiki ke hoopuehu like ia HPMC i ka wai wela i ka wa mua, a hemo koke i ka wa hooluolu.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 hoʻomehana iā 70 ° C.e hoʻopuehu i ka HPMC e hoʻomākaukau i ka slurry wai wela;a laila e hoʻohui i ke koena o ka wai anuanu i ka wai wela I loko o ka slurry, hoʻoluʻu i ka hui ʻana ma hope o ka hoʻoulu ʻana.
ʻano hui ʻana o ka pauda: hui pu i ka pauda HPMC me ka nui o na mea pauda e ae, e hui pono me ka mea huila, a laila e hookomo i ka wai e hemo ai, alaila hiki ke hoopau ia HPMC i keia manawa me ka hookui ole a houluulu, no ka mea, o kela kihi keia kihi liilii, he wahi uuku wale no. o HPMC E hoʻoheheʻe koke ʻia ka pauda i ka wā e hui ai me ka wai.-Ke hoʻohana nei nā mea hana ʻōpala a me nā mortar i kēia ala.[Hoʻohana ʻia ʻo Hydroxypropyl methyl cellulose (HPMC) ma ke ʻano he mānoanoa a me ka mea mālama wai i loko o ka mortar pauka putty.
E kau i ka nui o ka wai wela i makemake ʻia i loko o ka pahu a hoʻomehana iā ia ma kahi o 70 ° C.Hoʻohui mālie i ka hydroxypropyl methylcellulose me ka hoʻoulu lohi, e hoʻomaka i ka HPMC e lana ana ma luna o ka wai, a laila e hana mālie i kahi slurry, a hoʻomaha i ka slurry me ka hoʻoulu ʻana.
Ka manawa hoʻouna: Nov-16-2021