Iyo firimu-inogadzira zvimiro zveindasitiri-giredhi hydroxypropyl methylcellulose (HPMC) chinhu chakakosha pakushandiswa kwayo kwakapararira munzvimbo dzakawanda dzekushandisa. HPMC is water-soluble cellulose ether iyo inoshandiswa zvakanyanya mumaindasitiri. Yayo firimu-yekugadzira zvimiro zvinosanganisira mechanical zvimiro, optical zvimiro, kugadzikana kwemakemikari, kuenderana nezvimwe zvinongedzo, uye zvimwe zvakawanda zvinhu.
1. Mafirimu-kugadzira nzira
HPMC inonyungudika mumvura kuita inoonekera colloidal mhinduro. Mushure mekunge mvura yanyungudika, mamorekuru eHPMC mune mhinduro anorongazve uye anobatana kuti agadzire firimu rinoenderera rine rimwe simba uye kuoma. Kuvapo kwehydroxypropyl (-CH2CHOHCH3) uye methyl (-CH3) mapoka muHPMC molecular chain inopa iyo firimu zvese zvakanakisa mechanical simba uye imwe dhigirii yekuchinja.
2. Mechanical properties
Simba uye ductility
Mafirimu eHPMC anoratidza simba rakanyanya kusimba uye ductility uye anogona kumirisana nemamwe madhiraivha emagetsi pasina kutyora. Aya ma mechanic zvivakwa ane hukama nehuremu hwemamorekuru, dhigirii rekutsiva, uye kusungwa kweiyo HPMC mhinduro. HPMC ine huremu hwemamorekuru hwepamusoro uye dhigirii rekutsiva kazhinji inoumba mafirimu akasimba uye akaomarara. Izvi zvinoita kuti HPMC ive yakakosha mumashandisirwo ayo anoda simba remuchina repamusoro, senge zvekuvakisa, machira, uye mapiritsi emishonga.
Adhesion
Mafirimu eHPMC ane adhesion yakanaka uye anogona kunamatira zvakanaka kune akasiyana substrate nzvimbo, senge bepa, simbi, girazi, uye plastiki. Ichi chivakwa chinoita kuti chishandiswe zvakanyanya mumachira uye zvinonamira. Kunamatira kunokanganiswawo nekugadzirisa kugadzirisa uye kuomesa mamiriro.
3. Optical properties
HPMC mafirimu anowanzo kuve pachena kana kupenya uye ane yakanakisa optical zvivakwa. Kujeka kwemafirimu aya kunoenderana zvakanyanya nekufanana kwemhinduro, mamiriro ekuomesa, uye huwandu hwetuburu tudiki hunogona kuoneka panguva yekugadzira firimu. Kujeka kwepamusoro kunoita kuti HPMC ibatsire zvakanyanya mumashandisirwo anoda kutariswa kwekuona, senge kurongedzerwa kwechikafu, machira emishonga, uye machira ekudzivirira.
4. Kugadzikana kwemakemikari
Kuramba kwemvura
Mafirimu eHPMC ane imwe nhanho yekuramba mvura. Kunyangwe HPMC pachayo ichinyungudika mumvura, chimiro mushure mekugadzirwa kwefirimu hachinyungudika nyore kana yaiswa mumvura. Ichi chivakwa chinobatsira mune akawanda maapplication, akadai sekuvaka putties, adhesives, uye mvura-based coatings. Zvisinei, kushorwa kwemvura hakusi mhedziso, uye kunyudzwa kwenguva refu mumvura kunogona kukonzera kuzvimba kana kuputika kwefirimu.
Chemical resistance
Firimu reHPMC rine kuramba kwakanaka kune akasiyana makemikari, kunyanya mu acid-base kwazvakarerekera nharaunda. Izvi zvinoita kuti ive yakakodzera kune dzimwe nzvimbo dzinoparadza, senge machira uye mafirimu ekudzivirira muindasitiri yemakemikari. Iko kugadzikana kwemakemikari yeHPMC firimu inokanganiswawo nedhigirii rayo rekuyambuka uye nharaunda yarinoshandiswa.
5. Mamiriro ekugadzira mafirimu
Solution concentration
Kugadziriswa kwekugadzirisa kunobata zvakananga iyo firimu-yekugadzira mhando yeHPMC uye zvimiro zvemufirimu. Kazhinji, huwandu hwepamusoro hweHPMC mhinduro dzinoumba akakora uye akasimba mafirimu. Nekudaro, yakawandisa yekuisa pfungwa inogona zvakare kukonzera yakawandisa viscosity yemhinduro, zvichiita kuti zviome kushandisa zvakaenzana.
Kuomesa mamiriro
Iyo yekuomesa nekukurumidza uye tembiricha ine mhedzisiro yakakosha pakuumbwa uye zvinhu zvemufirimu. Kunyanya kuomesa tembiricha uye kukurumidza kuomeswa kumhanya kunowanzo kutungamira mukuumbwa kwemabhuru mufirimu, zvichikanganisa kujeka uye mashandiro emufirimu. Kuomeswa kunononoka kunobatsira kuumba firimu rakafanana, asi rinogona kuguma nekusakwana kwemhepo inopisa, inokanganisa kunaka kwefirimu.
6. Kuenderana nezvimwe zvinhu
HPMC firimu inonyatsoenderana nemhando dzakasiyana-siyana dzekuwedzera uye zvinoshanda, zvakadai seplasticizers, crosslinkers, fillers, etc. Izvi zvinobvumira HPMC kuti ishandiswe zvakanyanya mukugadzirwa kwezvinhu zvakasanganiswa kana mabhanhire anoshanda. Semuenzaniso, kuwedzera plasticizers kunogona kuvandudza kushanduka kwemufirimu, nepo ma-cross-linking agents anogona kuwedzera simba uye kushorwa kwemvura kwefirimu.
7. Nzvimbo dzekushandisa
Zvishandiso zvekuvaka
Muzvivakwa zvekuvaka, HPMC mafirimu anoshandiswa mune yakaoma-yakasanganiswa dhaka, putty, machira uye zvimwe zvigadzirwa. Iyo firimu-inogadzira zvinhu inogona kuvandudza kunamatira, kuputika kusagadzikana uye kushorwa kwemvura kwezvigadzirwa.
Pharmaceuticals
Mundima yemishonga, HPMC inoshandiswa sechinhu chekuputira pamapiritsi emishonga. Mafirimu ayo ekugadzira firimu anogona kunyatso kudzora kuburitswa kwezvinodhaka uye kugadzirisa kugadzikana uye kushanda kwezvinodhaka.
Indasitiri yezvokudya
Mafirimu eHPMC anoshandiswa sezvinhu zvinodyiwa zvekurongedza muindasitiri yechikafu zvine zvakanaka zvipingamupinyi zvivakwa uye chengetedzo.
Coatings uye adhesives
Iko kunamatira uye kubuda pachena kwemafirimu eHPMC anovaita akakodzera ekupfekedza ma substrates uye anonamira, uye anoshandiswa zvakanyanya mumaindasitiri ekukoira uye maindasitiri ekurongedza.
8. Ushamwari hwezvakatipoteredza
HPMC chigadzirwa chakagadziridzwa chinobva kune yakasikwa cellulose. Maitiro ayo ekugadzira firimu haadi zvinonyungudutsa zvinokuvadza uye ane biodegradability yakanaka uye kushamwaridzana kwezvakatipoteredza. Izvi zvinoita kuti ive yakakosha zvikuru mukugadzirwa kwegirinhi chemistry uye inogoneka zvinhu.
Iyo firimu-inogadzira zvimiro zveindasitiri-giredhi HPMC inoita kuti ive chinhu chakakosha mumhando dzakasiyana dzekushandisa. Zvakanakira musimba remagetsi, optical properties, kugadzikana kwemakemikari, uye kuenderana kwakanaka nezvimwe zvinhu zvinopa huwandu hwakawanda hwekushandisa. Zvingave mune zvekuvakisa, zvemishonga, kurongedza chikafu, kana mumachira nemanamira, HPMC yakaratidza kuita kwakanakisa. Nekufambira mberi kwesainzi uye tekinoroji, tekinoroji yekugadzira firimu nenzvimbo dzekushandisa dzeHPMC icharamba ichikura, ichikurudzira kuvandudzwa kwemamwe maapplication matsva.
Nguva yekutumira: Jun-29-2024