Me pehea te whakarite i te methyl hydroxyetyl ​​cellulose?

He whakamārama me te tirohanga

Ko te Cellulose Ether he rauemi matū pai rawa atu i hangaia mai i te cellulose polymer ma te maimoatanga matū. I muri i te hanga o te konutai hinu me te cellulose Acetate i te rau tau 1800, kua whakawhanakehia e Chemists nga kohinga honohono o nga Cellulose he maha nga waahanga, me nga waahanga tono hou. Ko nga hua cellulose penei i te konutai Carboum (CMC), EC), hpcroxyethyl cellulose (hppc) me etahi atu cellulose (mhpc) me etahi atu cellulose (mhpc) me etahi atu cellulose (mhpc) me etahi atu cellulose (mhpc) me etahi atu cellulose E mohiotia ana ko "Gluthrial Monosodium Glutamate" a kua whakamahia whānuitia i roto i te kohinga hinu, te hanga, te kai, te rongoa me nga matū o ia ra.

Hydroxyethyl methyl cellulose (mhpc) he kakara, he koretake, he kore-paitini, kaore e taea te rewa i roto i te wai makariri hei hanga i te otinga marama. Kei a ia nga ahuatanga o te matotoru, te herea, te marara, te whakakii i te kiriata, te aukati, te whakakao, te makuku me te tiaki i te korowai. Na te mea e kaha ana te mahi o te otinga wai, ka taea te whakamahi hei kaihoko tiaki colloidal, emulsifier me te marara. He pai te hydrophility CommercelumyLose o te hydroxyumenyllose No te mea kei roto i te hydroxyethyl nga roopu hydroxyetyl, he pai te kaha anti-koriri, he pai te kaha o te mate me te aukati i te koriri me te aukati koriri.

Ko te Mydroxyethyl methylcellulose (Hemc) kua rite ki te whakauru i nga tauira o te opylcene. Ko te pāmahana o te waikawa o te methylcellulose he teitei ake i te MC.

Hanganga

Āhuatanga

Ko nga ahuatanga matua o te hydroxyethyl methylcellose (Hemc):

1 Ka taea te rewa te Hemc i te wai makariri. Ko tana tino aro nui rawa atu na te tirotiro. He rereke nga rereketanga me te tirohanga. Te whakaheke i te tirohanga, te nui ake o te whakarewa.

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3. Nga Mahi Mata: Na te mahi kaha o te papa o te otinga wai, ka taea te whakamahi hei kaihoko tiaki Colloidal, emulsifier me te marara.

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6.. Te aukati o te koriri: He pai te riri o te Hemc me te pumau o te koriri i roto i te rokiroki mo te wa roa.

7. PH Statebay: Ko te tirohanga o te otinga wai o nga hua Hemc, he alkali ranei, a ko te uara pH he pumau i roto i te whānuitanga o te 3.0 ki te 11.0.

Puka tono

Ka taea te whakamahi i te Mydroxyethyl methylcellulose hei kaihoko tiaki colloidal, emulsifier me te marara na tona mahi kaha i roto i te otinga wai. Ko ana tauira tono e whai ake nei:

1. Tuhinga o mua. Ko te Mydroxyethyl methylcellulose he kakara, he koretake, he kore-paitini, ka taea te rewa i roto i te wai makariri hei hanga i te otinga ngawari. Kei a ia nga ahuatanga o te matotoru, te herea, te marara, te whakakii i te kiriata, te aukati, te whakakao, te makuku me te tiaki i te korowai. Mai i te mea ko te otinga ahumoana he mahi kaha, ka taea te whakamahi hei kaihoko tiaki colloidal, emulsifier me te marara. He pai te hydrophility CommercelumyLose o te hydroxyumenyllose

2. He peita te peita awhina tino ngawari, e hangaia ana i nga rauemi raw e whai ake nei i nga waahanga mo te taumaha: 150-200 go te wai deionized; 60-70 go te exullin parakore parakore; 550-650 go te konupora nui; 70-90 g o te paura talcum; Te otinga o te Cellulose Aquaus 30-40g; lignocellulose otinga 10-20g; AID-TIKI AIMITIDITION 4-6g; antiseptic me te whakamomori 1.5-2.5g; 1.8-2.2G; kaihoko whakamahana 1.8-2.2g; 3.5-4.5G; Eahylene Glycol 9-11g; Ko te otinga wai hydroxyethyl ka hangaia ma te whakakore i te 2-4% hydroxyethyl methylcelluse i roto i te wai; Ko te otinga o te lignocellulose e hangaia ana i te 1-3% lignocelluse na roto i te whakakore i te wai.

Whakariteritenga

Ko te tikanga whakarite mo te hydroxyethyl methyl cellulose, ko te tikanga ka whakamahia te miimii, me te miihini e whakamahia ana hei kaihoko taurangi hei whakarite hydroxyetyl ​​cellulose. Ko nga waahanga taimaha o nga rauemi mata mo te whakarite i nga waahanga hydroxyhyllose: 700-800 nga waahanga o te miro o te konupora, te 7-28 nga waahanga o te oxy etchne, 16-19 nga waahanga o te waikawa actic glacial; Ko nga waahanga motuhake ko:

Ko te taahiraa tuatahi, i te taha o te tauhohenga, whakauruhia toluene me te ranunga isoproponol, te wai hauora, te wera ki te 60-80 nunui mo te 20-40 meneti;

Ko te taahiraa tuarua, ko te whakarewatanga o nga rawa o runga ki te 30-50 ° C, te whakakii i te toluene me te huringa whakarewa, te 30 ° C ki te 50 ° C;

Ko te taahiraa tuatoru, ko te tohu: I muri i te otinga o te whakarewatanga, kua nekehia te reactor ki te 0.05-0mpa, me te kohyylene oxide me te methyl chloride e 30-50 meneti; Ko te waahanga tuatahi o te eterifiction: 40-60 ° C, 1.0-2.0 haora, ka whakahaerehia te pehanga i waenga i te 0.15 me te 0.3mpa; Ko te waahanga tuarua o te eterifiction: 60 ~ 90 ~ 90 ℃, 2.5 haora 2.5 haora, ka whakahaerehia te pehanga i waenga i te 0.4 me te 0.8mpa;

Ko te taahi tuawha, ko te whakakotahitanga: Tāpirihia te waikawa hakinakina octic i mua ki te kuru i te ua ki te 105-80. Kua whakakiia te tank whakaheke i te wai tap i tukinotia e te taputapu osmosis whakamuri i te 90 ° C ki te 100 ° C;

Ko te tuarima o te taahiraa, ko nga taonga o te rautau i te wha o nga waahanga, ka tukuna nga taonga wehe ki te horoi horoi i mua mo te horoi i nga taonga;

Ko te tuaono tuaono, ko te whakamaroke centrifugal: ka tukuna te rauemi horoia ki roto i te Centrifugero sentrifuge, ka maroke i te 150-170 ° C, ka pakaru nga rauemi maroke.

I whakaritea ki te hangarau whakaputa hanga celluluse, e whakamahia ana e te kaihaka o te waa hei whakarite i te hydroxyethyl cellulose, he pai te pehanga o te koriri. He pai te whakatikatika me te whakawetiweti o te koriri i te wa e rokiroki ana te waa-roa. Ka taea te whakamahi hei utu mo etahi atu cellulose.