Nibihe bikoresho fatizo bya HPMC?

HydroxyPropyl Methylcellsellse (HPMC) ni polymer itandukanye ifite ibyifuzo byinshi mu nganda zitandukanye, harimo imiti, kubaka, ibiryo, ibiryo, no kwisiga. Ibikoresho fatizo bikoreshwa mugukora HPMC biva mubikoresho bisanzwe kandi bishobora kongerwa.

HPMC ni udukoko twa semisynthetike wa selile, polymer karemano iboneka murukuta rwa serile. Ibikoresho fatizo byakozwe na HPMC birimo ibishishwa bya selile na propaylene. Ibikoresho fatizo na Synthesis byasobanuwe muburyo burambuye:

1. Cekwi:

Inkomoko: Ibikoresho nyamukuru bya HPMC ni selile, bikurwa mubiti cyangwa fatton fibre. Igiti cyimbaho ​​nisoko ikunze kugaragara kubera ubwinshi nigiciro-cyibiciro.
Gutandukana: Gutandukanya selile kuva mubikoresho fatizo ukoresheje inzira zitandukanye za shimi nubuka. Igiti cyimbaho ​​kivurirwa imiti kugirango ukureho umwanda no gukuramo fibre ya selile.

2. Poppide ya proppide:

Inkomoko: Indaya ya proplene nigice cyingenzi cya synthemc hpmc kandi ikomoka kuri propylene, petrochemical yabonetse mugihe cyamavuta meza.
Umusaruro: Oxylene oxide isanzwe ikorwa muburyo bwa chimique yitwa Chlorohydrins cyangwa epoxidation. Muri ubu buryo, propaylene yitabye chlorine cyangwa hydrogen peroxide kugirango ikore imyanda ya propylene.

3.

Guhangana: Synthesis ya HPMC ikubiyemo gutandukanya selile hamwe na propaylene okiside. Iyi nzira nayo yitwa methylation, aho amatsinda ya hydroxyPropyle yamenyeshejwe mububiko bwa selile.
Kuvura Alkali: Gufata selile hamwe na alkali (mubisanzwe sodiyumu hydroxide) kugirango ukore amatsinda ya hydroxyl. Ibi bituma barushaho kwikora mugihe cyo gukurikiranwa na propaylefe.

4. Urwego rw'igicucu:

Igenzura: Kugenzura urwego rwa methylation (DS) mugihe cyo kugerwaho kugirango ugere kumiterere yifuzwa ya HPMC. Urwego rwo gusimburwa rugira ingaruka ku buke, viccosity, hamwe nibindi bintu byibicuruzwa byanyuma.
Hydroxy oppepy

Reaction: Thuliulose Yakozwe noneho iratwarwa na popide ya propalene igenzurwa. Ibi bivamo gusimbuza amatsinda ya hydroxy oxypropyle kuruhande rwa selile.
Ubushyuhe nigitutu: Kugenzura witonze uko ibintu bifatika, harimo ubushyuhe nigitutu, kugirango habeho inzira imikorere no kurangiza ibicuruzwa.

5. Kutabogama no gukaraba:

Kubogamiye acide: Nyuma yimyitwarire, ibicuruzwa bitarimo ubucukuzi hamwe na aside kugirango ukureho shingiro rirenze.
Gukaraba: HPMC yogejwe kugirango ikureho umwanda, ibikoresho bidasubirwaho, nibicuruzwa. Iyi ntambwe ningirakamaro kugirango ubone ibicuruzwa byinshi byanyuma.

6. Kuma:

Gukuraho amazi: Intambwe yanyuma nukumisha HPMC kugirango ukureho ubuhehere busigaye. Iyi fomu HPMC muburyo bwa powder, ishobora gukomeza gutunganywa kandi ikoreshwa muburyo butandukanye.

Ibikoresho fatizo bya HPMC birimo ubutugo gikomoka kuri selile ikomoka mu giti cyangwa fibre fibre hamwe na porode ya proplene ikomoka kuri peteroli. Inzira ya synthesis irimo metylation, hydroxy oppesipy, kutabogama, gukaraba no gukama, hamwe nibihe bigenzurwa neza kugirango ubone imitungo yifuzwa ya polymer. Guhinduranya hpmc biva mumiterere yimiti idasanzwe, bigatuma ibintu bifite agaciro mubicuruzwa bitandukanye.