Hpmc inovandudza sei kuchengetwa kwemvura?

HydroxyPropyl methylcellose (HPMC) is is is is-ionic cellolose endege ine maindasitiri akasiyana-siyana, kunyanya nekuda kwekutenderera kwemvura. Hunhu uhwu hwakakosha mukuvandudza mashandiro uye mhando yezvigadzirwa muzvivakwa zvakadai sekuvaka, mishonga, chikafu, uye chengetedzo yemunhu. Kunzwisisa kuti HpMC inovandudza sei kuchengetwa kwemvura kunosanganisira kuongorora chimiro chemoyo yemakemikari, maitiro echiito, uye zvikumbiro zvakananga kuminda yakasiyana.

Chemical chimiro uye zvivakwa zveHPMC
HPMC inotorwa kubva ku cellulose, iyo yakawanda kwazvo yekare polymer pasi pano. Iyo yakagadziridzwa kememolly kuti isanganisira hydroxyropropyl uye methyl mapoka, iyo inosimudzira iyo solubility uye mashandiro. Chimiro chikuru cheHPMC chine cellulose backbone ine hydroxyl mapoka ehurongwa hwakapindurwa neDethoxyl (-Och3) uye hydroxyprupyl (-ch2chohch3) mapoka. Uku kugadziridzwa kunopa mvura solubility uye thermo-gelling zvivakwa, izvo zvakakosha pakukoshesa kwaro kwemvura.

Michina yekuchengetwa kwemvura
Hydrophilic mamiriro
Iyo hydroxyl, madziridzo, uye hydroxypruspropyl mapoka muHPMC yakanyanya hydrophilic. Izvi zvinoreva kuti vanokwezva uye kudyidzana nemamolekyudhi emvura kuburikidza neHydrogen kusungwa. Kana HPMC yakavhenganiswa nemvura, inoumba mhinduro ye viscous kana gel, zvichienderana nekumisikidza. Iwo maHydropil mapoka anobata pamamolekyudhi emvura zvakasimba, achideredza mwero wekuveza uye kurasikirwa kwemvura kubva kuhurongwa.

Kuvimbika kweviscosity
HPMC zvakanyanya inowedzera zvevatarisiti zvemvura mhinduro kunyangwe pane yakaderera kutarisisa. Iyi visikoka yakakwira inodzora kufamba kwemamolekyudhi emvura, kuderedza iyo chiyero iyo mvura inogona kutiza kubva kune fomu. Muzvivakwa zvekuvaka senge simende uye mongororo, iyo yakawedzera viscosity inobatsira kuchengetedza mvura mukati memubatanidzwa kwenguva yakareba, iyo yakakosha yekurapa kwayo uye kusimbisa simba.

Film Formation
HPMC inogona kuumba inochinja, firimu rinoenderera mberi kana rakaomeswa. Iyi firimu inoshanda sechipinganidzo pakurasikirwa kwemvura, kuteedzera unyoro mukati mechigadzirwa. Mukushandisa senge zvipfeko, mahwendefa, uye mahwendefa emishonga yemishonga, iyi yemafirimu ekuumba yakakosha kuchengetedza iyo inodiwa zvinyorwa nekufamba kwenguva.

Zvikumbiro zveHPMC mune dzakasiyana-siyana maindasitiri
Indasitiri yekuvaka
Mukuvaka, HPMC inoshandiswa zvakanyanya mumasimendi-yakavakirwa zvigadzirwa, majee mataira, uye plasters. Zvivakwa zvayo zvemvura zvakakosha zvakakosha nekuda kwezvikonzero zvinotevera:

Kushanda uye nguva yakavhurika: HPMC inovandudza basa rekushanda uye rinotambanudza nguva yakavhurika, iyo inguva iyo iyo musanganiswa unoramba uchishanda. Izvi zvakakosha kuti uve nechokwadi chekuti zvinhu zvinogona kuiswa uye zvakagadziridzwa zvisati zvagara.

Kuporesa uye kusimbisa simba: Kurapa kwakakodzera kwesimendi uye mongwe kunoda unyoro hwakakwana. HPMC inobatsira kuchengetedza mvura mumusanganiswa, ichivimba neyakajeka hydration ye siment zvidimbu. Izvi zvinotungamira kune simba riri nani uye kusimba kwechigadzirwa chekupedzisira.

Crack Kudzivirira: Nekuchengetedza unyoro, HPMC inobatsira kudzivirira marara anokonzerwa nekukurumidza kuoma uye kuderera. Izvi zvinonyanya kukosha muPlaster uye kupa zvikumbiro.

Indasitiri yeMishonga
Mune mishonga yemishonga, hpmc inoshandiswa seye binder, firimu-raimbova, uye inodzorwa-kuburitswa-mumiririri mukugadzira piritsi. Kugona kwayo kwemvura kunobatsira kunobatsira indasitiri munzira dzinoverengeka:

Piritsi inobatanidza: HPMC inoumba firimu rekudzivirira kutenderera mapiritsi, ayo anodzora huwandu hwekuburitswa hwezvinoshatisa zvinongedzo zvinoshanda. Izvi zvinovimbisa chimiro chakasimbiswa chekuburitsa, kuwedzeredza iyo yekurapa mhedzisiro uye kutevedzera kwemurwere.

Dziviriro yakanyorova: Iyo firimu yakaumbwa neHPMC inochengetedza zvinangwa zvinotyisa kubva mukunyorova, nekudaro zvichikura hupenyu hwesherufu uye kugadzikana kwechigadzirwa.

Binder: SeBinder, HPMC inovimbisa kuti mahwendefa ane masimba anodiwa ekuramba achibata achiramba achizvidzora zvakaringana.

Indasitiri yechikafu
Muindasitiri yechikafu, HPMC inoshandiswa seanotenderedza, stabilizer, uye emulsifier. Yayo yekuchengetwa kwemvura inokwidzirisa kunaka uye kuumbwa kwezvakashata zvigadzirwa:

Kucheneswa kwekunyoroveswa: Muzvinhu zvakabikwa, HPMC inobatsira kuchengetedza kunyorova, kuvandudza kutsva uye marerufu hupenyu hwechigadzirwa. Iyo inodzivirira solals uye inochengeta iwo mavara akapfava uye anokwezva.

STabilization: Kupfeka, uye zvigadzirwa, uye zvigadzirwa zvemusoro, HPMC inokanganisa musanganiswa nekuchengetedza iyo yemvura yakagoverwa, kudzivirira kupatsanurana uye kugadzirisa.

Indasitiri yekutarisira yega yega
HPMC zvakare yakakurumbira muzvigadzirwa zvega zvega senge shampoos, mafuta, uye lotions. Yayo yekuchengetwa kwemvura inopa mabhenefiti akati wandei:

Moisturization: HPMC inobatsira kuchengetedza zvemvura mumakiromita uye inogara, ichipa iyo yekupedzisira inonyorovesa pane ganda.

Kuenderana uye kunzwa: Inovandudza iyo yekugadzira uye kupararira kwezvinhu zvekutarisira pachako, kuita kuti vanyanya kunakidza kushandisa.

Kugadzikana: Nekuchengetedza unyoro, HPMC inobatsira kusimbisa emulsions uye kumiswa, kunoita kuti chigadzirwa chichiverengera zvayakagadzirirwa uye kushanda nenguva.

HydroxyPropyl methylcellose (HPMC) inowedzera zvakanyanya kuchengetedza kwemvura mune dzakasiyana-siyana zvikumbiro nekuda kwezvakarongeka zvemakemikari zvemakemikari uye zvivakwa. Hydrophic hunhu, kugona kuwedzera visikoka, uye kugona kwemafirimu kugadzira kunoita kuti ive yakakosha mumaindasitiri akadai sekuvaka, mishonga, chikafu, uye hanya. Nekuchengeta unyoro, HPMC inovandudza kushanda, kusimba, uye kuita kwezvigadzirwa, kuona kunaka uye kushanda zvakanaka mune kwavo zvinoshandiswa. Iko kushanduka kwepamusoro kweHPMC kunosimbisa kukosha kwayo sechizhinji chinowedzera chinowedzera chinosangana neyakasiyana zvinodiwa zvemabasa emazuva ano maindasitiri maitiro.