Hydroxypropyl cellulose (HPC) inowanzoshandiswa polima mumaindasitiri akasiyana siyana, kusanganisira zvemishonga, zvekuzora, uye chikafu.Kufanana nemapolymer mazhinji, kugadzikana kwayo kwekupisa uye kupisa kwekudzikira kunoenderana nezvinhu zvakati wandei senge mamorekuru huremu, dhigirii rekutsiva, kuvapo kwezvinowedzera, uye kugadzirisa mamiriro.Nekudaro, ini ndichakupa tarisiro yezvinhu zvinopesvedzera kudzikira kwekupisa kweHPC, yakajairika yekudzikira tembiricha renji, uye zvimwe zvekushandisa kwayo.
1. Chimiro cheKemikari cheHPC:
Hydroxypropyl cellulose inotorwa kubva kune cellulose inowanikwa nekurapa cellulose nepropylene oxide.Uku kugadziridzwa kwekemikari kunopa kunyungudika uye zvimwe zvinodikanwa zvivakwa kune cellulose, zvichiita kuti ishande mukushandisa kwakasiyana.
2. Zvinhu Zvinokanganisa Kuora Kwekupisa:
a.Molecular Weight: Yakakwira molecular uremu HPC inowanzova nepamusoro wekugadzikana kwekupisa nekuda kwemasimba akasimba epakati.
b.Dhigirii reKutsiva (DS): Kukura kwehydroxypropyl kutsiva kunokanganisa kugadzikana kwekupisa kweHPC.Yakakwira DS inogona kutungamira mukudzikira kwekudzikira tembiricha nekuda kwekuwedzera kusadzivirirwa kune inopisa cleavage.
c.Kuvapo kweZviwedzerwa: Zvimwe zvinowedzera zvinogona kuwedzera kugadzikana kwekupisa kweHPC nekuita seanosimbisa kana antioxidants, nepo vamwe vanogona kukurumidza kuderera.
d.Kugadzirisa Mamiriro: Mamiriro ayo HPC inogadziriswa, senge tembiricha, kudzvanywa, uye kuratidzwa kumhepo kana dzimwe nzvimbo dzinoshanda, zvinogona kukanganisa kugadzikana kwayo kwekupisa.
3. Thermal Degradation Mechanism:
Kushatisa kwekushisa kweHPC kunowanzo sanganisira kuputswa kwemabhondi eglycosidic mumusana we cellulose uye kutsemuka kweether linkages kunounzwa neiyo hydroxypropyl inotsiva.Kuita uku kunogona kuguma nekuumbwa kwezvinhu zvinoputika zvakadai semvura, carbon dioxide, uye mahydrocarbon akasiyana.
4. Typical Degradation Temperature Range:
Iyo tembiricha yekushatisa yeHPC inogona kusiyanisa zvakanyanya zvichienderana nezvinhu zvataurwa pamusoro apa.Kazhinji, kupisa kweHPC kunotanga kutenderera 200 ° C uye inogona kuenderera kusvika kune tembiricha yakatenderedza 300-350 ° C.Nekudaro, huwandu uhwu hunogona kuchinja zvichienderana nehunhu hweiyo HPC sampuli uye nemamiriro ayo anoratidzwa.
5. Zvishandiso zveHPC:
Hydroxypropyl cellulose inowana kushandiswa mumaindasitiri akasiyana siyana:
a.Pharmaceuticals: Inoshandiswa seyakakora, bhainda, firimu rekare, uye inodzorwa-kuburitsa mumiriri mukugadzirwa kwemishonga senge mahwendefa, capsules, uye topical gadziriro.
b.Cosmetics: HPC inoshandiswa muzvizora uye zvigadzirwa zvekuchengeta munhu seanokora mumiriri, stabilizer, uye firimu rekare mune zvigadzirwa senge lotions, makirimu, uye magadzirirwo ekuchengeta bvudzi.
c.Indasitiri yeChikafu: Muindasitiri yechikafu, HPC inoshanda seyakakora, inodzikamisa, uye emulsifier muzvigadzirwa zvakaita sesosi, soups, uye madhiri.
d.Maindasitiri Zvishandiso: HPC inoshandiswawo mune akasiyana maindasitiri ekushandisa senge ingi, machira, uye anonamira nekuda kweiyo firimu-kugadzira uye rheological zvimiro.
tembiricha yekupisa yekupisa yehydroxypropyl cellulose inosiyana zvichienderana nezvinhu zvakaita sehuremu hwemamorekuru, dhigirii rekutsiva, kuvapo kwezvinowedzera, uye kugadzirisa mamiriro.Nepo kushatiswa kwayo kuchiwanzotanga kutenderedza 200°C, inogona kuramba ichikwira kusvika patembiricha ye300-350°C.Kunzwisisa zvinhu zvinopesvedzera kugadzikana kwayo kwekupisa kwakakosha pakugadzirisa kuita kwayo mumashandisirwo akasiyana siyana mumaindasitiri akasiyana.
Nguva yekutumira: Mar-26-2024