Hydroxyethyl Methyl Cellulose (HEMC)he pūhui cellulose ether koʻikoʻi a pili i ka cellulose ether non-ionic. Loaʻa ka HEMC ma ka hoʻololi kemika me ka cellulose kūlohelohe e like me ka mea maka. Aia i loko o kona hale ka hydroxyethyl a me ka methyl substituents, no laila, loaʻa iā ia nā waiwai kino a me nā mea kemika a hoʻohana nui ʻia i nā mea kūkulu hale, nā uhi, nā kemika i kēlā me kēia lā, lāʻau lapaʻau a me nā māla ʻē aʻe.
1. Ka waiwai kino a me ke kemika
He keʻokeʻo keʻokeʻo a i ʻole keʻokeʻo ʻo HEMC a i ʻole granules, hiki ke hoʻoheheʻe ʻia i loko o ka wai anuanu e hana ai i kahi hoʻonā colloidal māmā a liʻiliʻi paha. ʻO kāna mau hiʻohiʻona nui:
Solubility: Hiki i ka HEMC ke hoʻoheheʻe koke i ka wai anuanu, akā maikaʻi ʻole ka solubility i ka wai wela. Hoʻololi kona solubility a me ka viscosity me nā loli i ka mahana a me ka waiwai pH.
Ka hopena mānoanoa: He mana mānoanoa ko HEMC i ka wai a hiki ke hoʻonui pono i ka viscosity o ka hopena.
Paʻa wai: He hana maikaʻi loa ka mālama ʻana i ka wai a hiki ke pale i ka nalowale o ka wai i ka mea.
Waiwai hana kiʻiʻoniʻoni: Hiki i ka HEMC ke hana i kahi kiʻi ʻoniʻoni ʻoniʻoni ma luna o ka ʻili me ka paʻakikī a me ka ikaika.
Lubricity: Ma muli o kāna ʻano molekala kū hoʻokahi, hiki i ka HEMC ke hāʻawi i ka lubrication maikaʻi loa.
2. Kaʻina hana
ʻO ke kaʻina hana o HEMC ka mea nui i nā pae aʻe:
Alkalization: Hana ʻia ka cellulose kūlohelohe ma lalo o nā kūlana alkaline e hana i ka cellulose alkali.
Etherification pane: Ma ka hoʻohui ʻana i nā mea methylating (e like me ka methyl chloride) a me nā mea hana hydroxyethylating (e like me ka ethylene oxide), ke komo nei ka cellulose i ka hopena etherification ma ke ʻano wela a me ke kaomi.
Ma hope o ka lapaʻau ʻana: Hoʻokaʻawale ʻia ka huahana crude i loaʻa, holoi ʻia, maloʻo, a ʻokiʻoki ʻia a loaʻa.HEMChuahana.
3. Nā wahi noi nui
(1) Hoʻohana nui ʻia nā mea kūkulu hale HEMC i ke kahua kūkulu, ʻo ka nui o ka mortar sima, ka pauka putty, tile adhesive, gypsum a me nā huahana ʻē aʻe. Hiki iā ia ke hoʻomaikaʻi i ka viscosity, ka mālama ʻana i ka wai a me nā waiwai anti-sagging o nā mea hana, hoʻolōʻihi i ka manawa hāmama, a pēlā e hoʻomaikaʻi ai i ka hana hana.
(2) Pena a me ka inika I loko o nā pena, hana ʻo HEMC ma ke ʻano he mānoanoa a me ka emulsifier stabilizer e hoʻomaikaʻi i ka viscosity a me ka rheology o ka pena a pale i ka uhi ʻana mai ka haʻalulu. Eia kekahi, hiki iā ia ke hāʻawi i nā waiwai hana kiʻiʻoniʻoni maikaʻi, e hana i ka ʻili o ka pena i ʻoi aʻe a maʻalahi.
(3) Hiki ke hoʻohana ʻia ka lāʻau lapaʻau a me nā mea hoʻonaninani HEMC ma ke ʻano he mea hoʻopili a me ke kiʻiʻoniʻoni i loko o nā papa lāʻau lapaʻau, a me kahi mānoanoa 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 ka hāʻule o ka maka, nā mea hoʻomaʻemaʻe maka, a me nā lotions.
(4) Nā kinikini o kēlā me kēia lā I nā lāʻau lapaʻau e like me nā mea holoi a me nā niho niho, hoʻohana ʻia ʻo HEMC ma ke ʻano he mānoanoa a me ka stabilizer e hoʻonui ai i ka rheology a me ka paʻa o ka huahana.
4. ʻO nā pono a me ka palekana kaiapuni
He kiʻekiʻe ka biodegradability a me nā hiʻohiʻona palekana o ka HEMC a ʻaʻole ia e hoʻohaumia i ka wā lōʻihi. I ka manawa like, ʻaʻohe mea ʻawaʻawa a maikaʻi ʻole, ʻaʻole hoʻonāukiuki i ka ʻili kanaka a me nā mucous membranes, a hoʻokō i nā koi o ka mālama ʻana i ka ʻōmaʻomaʻo a me ka hoʻomohala mau.
5. Nā hiʻohiʻona o ka mākeke a me nā ʻano hoʻomohala
Me ka hoʻomohala ʻana o ka ʻoihana kūkulu hale a me ka ʻoihana kemika i kēlā me kēia lā, ke hoʻomau nei ka ulu ʻana o ka mākeke no HEMC. I ka wā e hiki mai ana, e like me ka nānā nui ʻana o nā kānaka i nā mea pili i ke kaiapuni a hoʻomaikaʻi hou i ka hana huahana, e hoʻohana nui ʻia ʻo HEMC ma nā ʻano āpau. Eia kekahi, ʻo ka noiʻi a me ka hoʻomohala ʻana o nā huahana HEMC hana hou (e like me ke kiʻekiʻe kiʻekiʻe o ka wela a me ke ʻano koke) e hoʻolaha pū i kāna noi ma ka mākeke kiʻekiʻe.
E like me ka multifunctional a me ka hana kiʻekiʻe cellulose ether,hydroxyethyl methylcellulose (HEMC)He kuleana koʻikoʻi ia i ke kūkulu ʻana, ka uhi ʻana, ka lāʻau lapaʻau a me nā mea ʻē aʻe me kona mau ʻano kino a me nā mea kemika. Me ka holomua o ka ʻepekema a me ka ʻenehana a me ka hoʻonui ʻana i nā kahua noi, e pāʻani nui ʻo HEMC i ka ʻoihana hou a hāʻawi i ke kākoʻo ikaika no ka hoʻomohala ʻana i nā ʻoihana pili.
Ka manawa hoʻouna: Nov-11-2024