ʻO ka Hydroxyethyl Methyl Cellulose (HEMC)He hui cellulose ether koʻikoʻi ia a no ka non-ionic cellulose ether. Loaʻa ka HEMC ma o ka hoʻololi kemika me ka cellulose kūlohelohe ma ke ʻano he mea maka. Loaʻa i kona ʻano nā hydroxyethyl a me nā methyl substituents, no laila he mau waiwai kino a me nā kemika kūikawā a hoʻohana nui ʻia i nā mea kūkulu hale, nā uhi, nā kemika o kēlā me kēia lā, nā lāʻau lapaʻau a me nā ʻoihana ʻē aʻe.
1. Nā waiwai kino a me nā kemika
ʻO ka maʻamau, he pauka keʻokeʻo a keʻokeʻo paha ka HEMC a i ʻole nā granules, hiki ke hoʻoheheʻe maʻalahi ʻia i ka wai anuanu e hana i kahi hopena colloidal moakaka a ʻūlū iki paha. ʻO kona mau ʻano nui:
Ka hoʻoheheʻe ʻana: Hiki i ka HEMC ke hoʻoheheʻe koke i ka wai anuanu, akā he haʻahaʻa ka solubility i ka wai wela. Hoʻololi kona solubility a me ka viscosity me nā loli o ka mahana a me ka waiwai pH.
Hopena mānoanoa: Loaʻa i ka HEMC ka hiki ke mānoanoa ikaika i ka wai a hiki ke hoʻonui pono i ka mānoanoa o ka hopena.
Ka paʻa ʻana o ka wai: He hana paʻa wai maikaʻi loa ia a hiki ke pale i ka nalowale ʻana o ka wai i loko o ka mea.
ʻO ka waiwai hoʻokumu kiʻiʻoniʻoni: Hiki i ka HEMC ke hana i kahi kiʻiʻoniʻoni moakaka like ma ka ʻili me kekahi paʻakikī a me ka ikaika.
Lubricity: Ma muli o kona ʻano molekala kūikawā, hiki iā HEMC ke hāʻawi i ka lubrication maikaʻi loa.
2. Kaʻina hana
ʻO ke kaʻina hana o HEMC e pili ana i kēia mau ʻanuʻu:
Alkalization: Hoʻohana ʻia ka cellulose kūlohelohe ma lalo o nā kūlana alkaline e hana i ka cellulose alkali.
Ka hopena Etherification: Ma ka hoʻohui ʻana i nā mea methylating (e like me ka methyl chloride) a me nā mea hydroxyethylating (e like me ka ethylene oxide), hana ka cellulose i ka hopena etherification ma kahi mahana a me ke kaomi kikoʻī.
Ma hope o ka mālama ʻana: Hoʻopau ʻia ka huahana maka, holoi ʻia, hoʻomaloʻo ʻia, a kuʻi ʻia e loaʻa hopeHEMCnā huahana.
3. Nā wahi noi nui
(1) Hoʻohana nui ʻia nā mea kūkulu hale HEMC ma ke kahua kūkulu, ʻo ia hoʻi i ka sima sima, ka pauka putty, ka mea hoʻopili tile, ka gypsum a me nā huahana ʻē aʻe. Hiki iā ia ke hoʻomaikaʻi i ka viscosity, ka paʻa ʻana o ka wai a me nā waiwai anti-sagging o nā mea kūkulu, e hoʻolōʻihi i ka manawa wehe, a pēlā e hoʻomaikaʻi ai i ka hana kūkulu.
(2) Nā pena a me nā ʻīnika I loko o nā pena, hana ʻo HEMC ma ke ʻano he mea hoʻomānoanoa a me ka mea hoʻopaʻa emulsifier e hoʻomaikaʻi i ka viscosity a me ka rheology o ka pena a pale i ka uhi ʻana mai ka sagging. Eia kekahi, hiki iā ia ke hāʻawi i nā waiwai hana kiʻiʻoniʻoni maikaʻi, e hoʻolilo ana i ka ʻili pena i ʻoi aku ka like a me ka laumania.
(3) Hiki ke hoʻohana ʻia ka lāʻau lapaʻau a me nā mea hoʻonani HEMC ma ke ʻano he mea hoʻopili a me ka mea hana kiʻiʻoniʻoni i nā papa lāʻau lapaʻau, a me kahi mea hoʻomānoanoa a me ka moisturizer i nā huahana mālama ʻili. Ma muli o kona palekana kiʻekiʻe a me ka biocompatibility, hoʻohana pinepine ʻia i nā huahana e like me nā kulu maka, nā mea hoʻomaʻemaʻe maka, a me nā lotion.
(4) Nā kemika o kēlā me kēia lā I loko o nā kemika o kēlā me kēia lā e like me nā mea holoi a me nā mea niho, hoʻohana ʻia ʻo HEMC ma ke ʻano he mea hoʻomānoanoa a me ka mea hoʻopaʻa e hoʻoikaika i ka rheology a me ke kūpaʻa o ka huahana.
4. Nā pono a me ka palekana o ke kaiapuni
Loaʻa i ka HEMC nā ʻano biodegradability kiʻekiʻe a me ka palekana o ke kaiapuni a ʻaʻole ia e hoʻohaumia i ke kaiapuni i ka wā lōʻihi. I ka manawa like, ʻaʻohe mea ʻawahia a ʻino ʻole hoʻi, ʻaʻole hoʻonāukiuki i ka ʻili kanaka a me nā membrane mucous, a hoʻokō i nā koi o ka palekana kaiapuni ʻōmaʻomaʻo a me ka hoʻomohala hoʻomau.
5. Nā manaʻolana mākeke a me nā ʻano hoʻomohala
Me ka hoʻomohala ʻana o ka ʻoihana kūkulu hale a me ka ʻoihana kemika o kēlā me kēia lā, ke hoʻomau nei ka ulu ʻana o ke koi mākeke no HEMC. I ka wā e hiki mai ana, i ka nānā nui ʻana o ka poʻe i nā mea pili i ke kaiapuni a hoʻomaikaʻi hou aku i ka hana o ka huahana, e hoʻohana nui ʻia ʻo HEMC ma nā ʻano like ʻole. Eia kekahi, ʻo ka noiʻi a me ka hoʻomohala ʻana i nā huahana HEMC hana hou (e like me ke kūpaʻa i ka mahana kiʻekiʻe a me ke ʻano koke) e hoʻolaha pū i kāna noi ma ka mākeke kiʻekiʻe.
Ma ke ʻano he etera cellulose multifunctional a me ka hana kiʻekiʻe,hydroxyethyl methylcellulose (HEMC)he kuleana koʻikoʻi i ke kūkulu ʻana, nā uhi ʻana, nā lāʻau lapaʻau a me nā ʻoihana ʻē aʻe me kona mau waiwai kino a me ke kemika kū hoʻokahi. Me ka holomua o ka ʻepekema a me ka ʻenehana a me ka hoʻonui ʻana o nā kahua noi, e hoʻokani ʻo HEMC i kahi kuleana koʻikoʻi i ka ʻoihana hou a hāʻawi i ke kākoʻo ikaika no ka hoʻomohala ʻana i nā ʻoihana pili.
Ka manawa hoʻouna: Nov-11-2024