Hydroxypropyl Methylcellulose (HPMC)isiri-ionic cellulose ether, iyo inoshandiswa zvakanyanya mukuvaka zvinhu, kunyanya mukugadzirisa dhaka. Sekuwedzera kwekuita kwepamusoro-soro, HPMC inonyanya kushandiswa semvura inochengetedza, yakakora, lubricant uye binder, uye ine mabhenefiti ari pachena mukuvandudza kushanda kwedhaka rekugadzirisa.
1. Basic maitiro eHPMC
HPMC musanganiswa wepolymer wakagadziridzwa kubva kune yakasikwa cellulose kuburikidza nekutevedzana kwemakemikari maitiro. Chimiro chayo chemolecular chine mapoka akadai semethoxy (-OCH₃) uye hydroxypropyl (-CH₂CHOHCH₃). Kuvapo kwezvinhu izvi zvinotsiva kunopa HPMC yakanaka kunyungudika uye kugadzikana, ichiibvumira kukurumidza kunyungudika mumvura inotonhora kuti iite inoonekera viscous fluid. Iine kugadzikana kwakanaka kwekushisa, kugadzikana kwe enzymatic uye kusimba kwakasimba kune acids uye alkalis, uye inoshandiswa zvakanyanya mukuvaka zvinhu, machira, mishonga, chikafu uye mamwe maindasitiri.
2. Basa reHPMC mukugadzirisa dhaka
Kuvandudza kuchengetedza kwemvura
Mushure mekuwedzera HPMC kudhaka rekugadzirisa, kuita kwayo kwakanakisa kwekuchengetedza mvura kunogona kunonoka kurasikirwa kwemvura uye kuve nechokwadi chakakwana simende hydration. Izvi zvinonyanya kukosha kune yakatetepa-layer kuvaka kana yakakwirira-tembiricha yakaoma nharaunda, iyo inobatsira kudzivirira matambudziko akadai sekutsemuka uye delamination, uye inovandudza density uye simba kukura kwedhaka.
Vandudza kushanda
HPMC inogona kunyatso kusimudzira lubricity uye kushanda kwedhaka, ichiita kuti dhaka rekugadzirisa rive rakapfava panguva yekunyorera, nyore kushanda uye fomu. Iyo yekuzora mhedzisiro inoderedza kushorwa kwechishandiso panguva yekuvaka, iyo inobatsira kuvandudza kugona kwekuvaka uye kupera kwepamusoro.
Kuvandudza bonding performance
Kugadzirisa dhaka rinowanzo shandiswa kugadzirisa zvigadziko zvekare, zvinoda kubatana kwakanaka pakati pedhaka nechigadziko. Iko kukora mhedzisiro yeHPMC inosimudzira chisungo pakati pedhaka nechigadziko, ichidzikisa njodzi yekugova nekudonha, kunyanya kana ichivaka munzvimbo dzakakosha senge dzakamira kana sirin'i.
Kudzora kuenderana uye anti-sagging
Iko kukora mhedzisiro yeHPMC inogona kunyatso kudzora kuwirirana kwedhaka, zvichiita kuti isagone kudonha kana kutsvedza kana yaiswa panzvimbo yakatwasuka kana yakarerekera, uye kuchengetedza kugadzikana kwedhaka mumatanho ekutanga ekuumba. Izvi zvakakosha pakuvandudza kunaka kwekuvaka uye kuwana kugadzirisa kwakanaka.
Enhanced crack resistance
Sezvo HPMC inovandudza kuchengetwa kwemvura uye kushanduka kwedhaka, inogona kuderedza shrinkage process, nokudaro inonyatsodzivisa kuumbwa kwekuputika kwekuputika nekuvandudza kusimba kwese kwekugadzirisa.
3. Maitiro ekushandisa uye dosage kurudziro
Mumashandisirwo chaiwo, muyero weHPMC unowanzo 0.1% kusvika 0.3% yehuremu hwedhaka. Iyo chaiyo dosage inoda kugadziridzwa zvinoenderana nerudzi rwedhaka, nharaunda yekuvaka uye inodiwa kuita. Kusakwana dosi inogona kusaita basa rayo rakakodzera, nepo kuwandisa dosage kunogona kuita kuti dhaka rive gobvu, kurebesa nguva yekumisikidza, uye kutokanganisa simba rekupedzisira.
Kuti uwane yakanakisa mhedzisiro, zvinokurudzirwa kuishandisa musanganiswa nezvimwe zvinowedzera senge redispersible latex poda, mvura inoderedza, anti-cracking fiber, nezvimwewo, uye kukwidziridza dhizaini yeformula zvinoenderana nemaitiro ekuvaka uye zvinodiwa.
Kushandiswa kweHPMCmukugadzirisa dhaka rave nzira yakakosha yekuvandudza mashandiro echigadzirwa. Kuchengetedza kwayo kwakanakisa kwemvura, kukora, kushanda uye kunamatira kwete kungovandudza mashandisiro ekugadzirisa dhaka, asiwo inopa rubatsiro rwehunyanzvi rwekugadzirisa kuvaka munzvimbo dzakaoma. Sezvo indasitiri yekuvaka ichiramba ichiwedzera zvinodiwa pakuita kwekugadzirisa zvinhu, kukosha kwekushandisa kweHPMC kuchave kwakakurumbira, uye ichave chinhu chakakosha chikamu mune ramangwana repamusoro-kuita dhaka system.
Nguva yekutumira: Kubvumbi-04-2025