1. Metylcellulose (MC)
I muri i te rongoa o te miro o te miro, ka hangaia te Ether Cellulose e te maha o nga tauhohenga me te methane chloride hei kaihoko ohanga. Ko te tikanga, ko te tohu o te whakakapinga ko 1.6 ~ 2.0, a he rereke ano te whakarewatanga me nga nekehanga rereke o te whakakapinga. No te kore-katote cellulose.
(1) Ko te metylcellulose he rewa i roto i te wai makariri, a ka uaua te rewa i roto i te wai wera. Ko tana otinga wai he tino pumau i roto i te whānuitanga o te ph = 3 ~ 12. He pai te hototahi ki te māngaro, Guar Gum, me etahi atu me nga tini papaa. Ka tae te pāmahana ki te pāmahana tapatahi, ka puta te tipu.
(2) Ko te pupuri i te wai methyl ka whakawhirinaki ki tana waahanga taapiri, te tirohanga, te pai o te matūriki me te reiti whakaheke. Ko te tikanga, mena he nui te rahi o te rahi, he iti te pai, he nui te tirohanga, he tiketike te utu o te wai. I roto ia ratou, ko te nui o te taapiri he paanga nui ki te utu o te reti wai, me te taumata o te tirohanga noa ki te taumata o te reanga pupuri wai. Ko te reanga rewa te nuinga kei te taumata o te whakarereke o te mata o te matūriki cellulose me te pai o te matūriki. I roto i nga waahanga o te kowhatu i runga ake nei, ko te methyl cellulose me te hydroxypropyl cellulose teitei ake o te reiti pupuri wai.
(3) Ko nga huringa o te pāmahana ka tino pa ki te reanga pupuri wai o te cellulose methyl. Ko te tikanga, ko te teitei ake o te pāmahana, te kino ki te pupuri i te wai. Mena ka nui ake te pāmahana o te mokamoka 40 ° C, ka tino whakaitihia te rongoa wai o te cellulise wai, ka tino pa ki te hanganga o te paru.
(4) Ko te Cellulose he tino paanga ki te hanga me te taapiri o te paru. Ko te "piriona" i konei e korero ana ki te kaha piri i waenga i te taputapu tono a te kaimahi me te papapa o te pakitara, ara, ko te tuuruhara kutikuti o te mokete. He tiketike te piri, he nui te toenga o te mokete, a ko te kaha e hiahiatia ana e nga kaimahi i roto i te mahi whakamahinga he nui hoki, a he rawakore te mahi a te mokete. Ko te taapiri me te taapiri i te taapiri i te taumata ngawari i roto i nga hua cellulose.
2. Hydroxypropylmethylcelllose (HPMC)
Ko te methylcelcropyl methylcellulose he momo cellulose ko te kaha o te putanga me te kai i roto i nga tau kua pahure ake nei. Ko te cellulose kore-inoc whakaranu i hangaia mai i te miro kua oti te hangai i muri i te whakarewatanga, ma te whakamahi i te apylene me te methyl chloride hei kaihoko kohuko, na roto i te maha o nga tauhohenga. Ko te tohu o te whakakapinga he 1.2 ~ 2.0. He rereke nga ahuatanga o ona ahuatanga mo nga rereketanga o nga ihirangi methoxyl me nga tuhinga hydroxypropyl.
(1) He ngawari te whakaheke i te wai hydroxypropyl i te wai makariri, a ka tutuki i te raru o te rewa i roto i te wai wera. Engari ko te mea totika i roto i te wai wera he tino tiketike ake i te waa o te cellulose methyl. Ko te whakarewa i te wai makariri ka tino pai ake te whakataurite ki te Cellulose Cellulose.
(2) Ko te tirohanga o te hydroxypropyl methylcellose e pa ana ki tana taumaha o te ngota, me te nui o te taumaha o te konukawata, ko te teitei o te tirohanga. Ka pa ano te pāmahana ki tana tirohanga, ka piki haere te pāmahana, te heke o te manawa. Heoi, ko tona tino tirohanga nui he hua nui o te pāmahana iti ake i te cellulose methyl. Ko tana otinga he pumau ka rongoa i te pāmahana rūma.
(3) Ko te toenga wai o te hydroxypropyl methylcelose e whakawhirinaki ana ki tana waahanga taapiri, me tana utu mo te pupuri i te wai i raro i te taua taapiri.
(4) Ko te methylcelluloulouse he waikawa me te alkali, me te otinga o te waimoana he tino pumau i te whānuitanga o te ph = 2 ~ 12. Ko te houra kiri me te waiariki he iti te awe o te wai ki ana mahi, engari ka taea e te alkali te tere o te horoi me te whakapiki i tana tirohanga. Ko te methylceluloul o te hydroxypropyl he pumau ki nga tote noa, engari ka nui te kukume tote tote, ko te tirohanga o te rongoa methylcellulose e ahu atu ana.
(5) Ka taea te konatunatu te methylcellulose methylcelose ki nga pūhui-wai-wai-a-wai ki te hanga i te otinga me te teitei ake o te rongoa. Pēnei i te waipiro polyvinyl, te māhu hāora, te gum huawhenua, me etahi atu
(6) Ko te methylcellulose he pai ake te aukati i te mate enylcellullose, me tona otinga ka whakaitihia e te kohungahunga nui atu i te methyelcelllose. Ko te taapiri o te hydroxypropyl methylcellulose ki te hanga mokete he teitei ake i te methylcelllose.
3. hydroxyethyl cellulose (hec)
He mea hanga mai i te miro whakakikorua me te alkali, ka tau ki te oxide a te rangatira o te acetone i te aroaro o Acetone. Ko te tohu o te whakakapinga he 1.5 ~ 2.0. He kaha te hydrophilility ka ngawari ki te ngongo i te makuku.
(1) Ko te cellulox hydroxyethyl he rewa i roto i te wai makariri, engari he uaua ki te rewa i roto i te wai wera. Ko tana otinga he pumau i te nui o te pāmahana me te kore e huri. Ka taea te whakamahi mo te wa roa i raro i te pāmahana tiketike i roto i te paru, engari he iti ake te pupuri i te wai o te wai.
(2) Ko te cellulose hydroxyetyl e mau ana ki te waikawa whanui me te alkali. Ka taea e te Alkali te whakatere i tana horoi me te whakapiki i tana tirohanga. Ko tana raru o te wai he mea kino rawa atu i tera o te cellulose methyl me te hydroxypropyl methyl cellulose. .
(3) He pai te mahi a te hydroxyethyl mo te paru, engari he wa ano he wa roa mo te raima.
(4) Ko te mahinga o te cellulose hydroxyetyl i hangaia e etahi umanga whare, he iti ake te iti iho i te cellulose methyl na tona nui o te wai me te ihirangi nui.
4. Carboxymethyl Cellulose (CMC)
Ko te whakamahi i te Ether i roto i te muka maori (miro, me etahi atu) me te alkali me te whakamahi hei tohu tohu ma te maha o nga maimoatanga urupare. Ko te tohu o te whakakapinga ko te 0.4 ~ 1.4, me ana mahi e tino pa ana ki te tohu o te whakakapinga.
(1) Ko te carbodymethyl he nui ake te hygroscopic, a ka nui ake te wai ka penapena i raro i nga tikanga whanui.
(2) Ko te otinga carboxymethyl kaore e whakaputa i te kiri, ka heke te tirotiro me te pikinga o te pāmahana. I te pāmahana o te pāmahana 50 ° C, kaore e taea te whakarereke.
(3) Ko tona pumau ka pa ki te pH. Ko te tikanga, ka taea te whakamahi i roto i te paru-a-Gypsum, engari kaore i roto i te paru-i-hangai. A, no te tino nui te alkaline, ka ngaro te tirohanga.
(4) He iti ake te pupuri i te wai i runga i te cellulose methyl. He hua whakahoki i runga i te paru-a Gypsum e whakaiti ana i tona kaha. Heoi, ko te utu o te carboxymethyl he iti ake te iti iho i te waa o te methyl cellulose
Te wa tuku: Jan-10-2023