ʻO ka Hydroxyethyl cellulose (HEC) he melemele keʻokeʻo a māmā paha, ʻaʻala ʻole, ʻaʻohe mea ʻawaʻawa a i ʻole ka pauka paʻa i hoʻomākaukau ʻia e ka etherification o ka cellulose alkaline a me ka ethylene oxide (a i ʻole chlorohydrin). Nonionic soluble cellulose ethers. Ma waho aʻe o ka mānoanoa, hoʻopaneʻe, hoʻopaʻa ʻana, flotation, hana kiʻiʻoniʻoni, hoʻopuehu, mālama wai a me ka hāʻawi ʻana i nā colloids pale, loaʻa iā ia nā waiwai penei:
1. He mea hiki ke hoʻoheheʻe ʻia ka HEC i ka wai wela a i ʻole ka wai anuanu, a ʻaʻole e hoʻoheheʻe ʻia i ka wela kiʻekiʻe a i ʻole ka paila, i loaʻa iā ia kahi ākea o ka solubility a me nā ʻano viscosity, a me ka gelation non-thermal;
2. Hiki i ka non-ionic pono'ī ke noho pū me ka nui o nā polymers hiki ke hoʻoheheʻe ʻia i ka wai, surfactants a me nā paʻakai, a he colloidal mānoanoa maikaʻi loa i loaʻa nā hopena electrolyte kiʻekiʻe;
3. ʻO ka paʻa wai paʻa ʻelua ʻoi aku ka nui o ka methyl cellulose, a ʻoi aku ka maikaʻi o ka hoʻoponopono kahe ʻana.
4. Ke hoʻohālikelikeʻia me ka methyl cellulose iʻikeʻia a me ka hydroxypropyl methyl cellulose,ʻo ka hiki ke hoʻopuehu o HEC ka meaʻoi loa, akāʻo ka colloid pale ka ikaika loa. No ka mea he mau waiwai maikaʻi ʻo HEC o ka mānoanoa, hoʻokuʻu, hoʻopuehu, emulsifying, hoʻopaʻa ʻana, hana kiʻiʻoniʻoni, pale i ka wai a me ka hāʻawi ʻana i ka colloid pale, ua hoʻohana nui ʻia i ka ʻimi ʻaila, nā uhi, ke kūkulu ʻana, ka lāʻau lapaʻau a me ka meaʻai, textile, pepa a me ka polymer Polymerization a me nā kula ʻē aʻe.
Nā mea e mālama ai:
No ka mea ʻo ka hydroxyethyl cellulose i mālama ʻia i ka ʻili he pauka a i ʻole cellulose paʻa, maʻalahi ke mālama a hoʻoheheʻe ʻia i loko o ka wai ke ʻike ʻia kēia mau mea.
1. Ma mua a ma hope o ka hoʻohui ʻana i ka hydroxyethyl cellulose, pono e hoʻoulu mau ʻia a hiki i ka ʻike a maopopo loa ka hopena.
2. Pono e kānana ʻia i loko o ka barela hui ʻana me ka mālie, a mai hoʻohui pololei i ka hydroxyethyl cellulose i hana ʻia i mau puʻupuʻu a me nā pōpō i loko o ka pahu hui.
3. ʻO ka mahana o ka wai a me ka pH waiwai o ka wai he pilina maopopo me ka hoʻoheheʻe ʻana o ka hydroxyethyl cellulose, no laila pono e nānā pono iā ia.
4. Mai hoʻohui i kekahi mea alkaline i ka hui ʻana ma mua o ka hoʻomehana ʻia ʻana o ka pauka hydroxyethyl cellulose e ka wai. ʻO ka hoʻonui ʻana i ka waiwai PH ma hope o ka hoʻomehana ʻana he mea kōkua no ka hemo ʻana.
5. E like me ka hiki, e hoʻohui i nā lāʻau antifungal i ka wā hiki.
6. I ka hoʻohana ʻana i ka hydroxyethyl cellulose kiʻekiʻe-viscosity, ʻaʻole pono ke kiʻekiʻe o ka waiʻona makuahine ma mua o 2.5-3%, i ʻole e paʻakikī ka mālama ʻana i ka waiʻona makuahine. ʻAʻole maʻalahi ka hana ʻana o ka hydroxyethyl cellulose ma hope o ka mālama ʻana i nā puʻupuʻu a i ʻole nā poe, a ʻaʻole ia e hana i nā colloid spherical insoluble ma hope o ka hoʻohui ʻana i ka wai.
Ka manawa hoʻouna: Nov-15-2022