HPMC: inogoneka polymer yezvivakwa zvekushandisa

Hydroxypropylmethylcellulose (HPMC) i polymer inonyungudika mumvura inotorwa kubva muselulosi. Ihupfu huchena kusvika kune-chena hunoshandiswa mune zvakasiyana-siyana zvekushandisa zvinosanganisira kuvaka, mishonga, chikafu, zvigadzirwa zvekuchengeta munhu uye machira. Mukuvaka, HPMC inoshandiswa seyakakora, binder, emulsifier uye mvura inochengetedza mumiriri. Icho chinhu chakakosha chesimende-based zvigadzirwa uye chinowanzoshandiswa mumatope, plasters, plasters uye mataira adhesives.

Chemical zvinhu zveHPMC

HPMC ipolymer inoumbwa nekuita kwe cellulose ine propylene oxide uye methyl chloride. Iyo synthesis maitiro inosanganisira kutsiva mapoka ehydroxyl muselulosi nemapoka emethyl uye hydroxypropyl. Kutsiva uku kunoguma nekuumbwa kwemapolymer anonyungudika nemvura uye asingasviki akagadzikana pamusoro pehupamhi hwepH mamiriro. Iyo kemikari chimiro cheHPMC inogona kugadziridzwa nekuchinja dhigirii rekutsiva, molar substitution uye viscosity giredhi. Aya magadzirirwo anogona kusimudzira mashandiro eHPMC mumashandisirwo akasiyana siyana, kusanganisira kuvaka.

Zvenyama zvimiro zveHPMC

Hunhu hwemuviri hweHPMC hunoenderana nedhigirii rekutsiva, molar kutsiva uye viscosity giredhi. HPMC ihupfu chena kusvika kuchena, isinganhuhwi uye isinganakidze. Inonyungudika mumvura uye inoumba yakajeka, yakajeka viscous solution. Iyo viscosity yeHPMC mhinduro inogona kugadziridzwa nekushandura kusungirirwa kwepolymer, iyo pH yemhinduro, uye tembiricha. HPMC mhinduro dzakagadzikana pane yakakura tembiricha siyana uye haigadziri gels kana kudonha pakutonhodza.

Basa reHPMC mukuvaka

HPMC inoshandiswa mukuvaka se rheology modifier, inochengetedza mvura mumiririri uye inonamira. Rheology modifiers zvinhu zvinogona kushandura mafambiro ekuyerera kwezvinhu, sedhaka kana plaster. HPMC inogona kuwedzera viscosity yedhaka kana plaster pasina kukanganisa kushanda kwayo kana nguva yekuisa. Izvi zvinopa izvo zvinhu zvakanyanya kugadzikana uye zvinoderedza njodzi yekudonha kana kudonha panguva yekushandisa.

Mvura inochengetedza zvinhu zvinhu zvinogona kuwedzera simba rekuchengetedza mvura yezvinhu. HPMC inochengetedza hunyoro muzvigadzirwa-samende senge madhaka nemapurasita kwenguva yakareba kupfuura zvimwe zvinowedzera. Ichi chivakwa chinobatsira kudzivirira zvinhu kubva pakuoma nekukurumidza, izvo zvinogona kukonzera kuputika uye kurasikirwa kwesimba.

Binders zvinhu zvinogona kuvandudza kunamatira kwechinhu kune substrate. HPMC inogona kuvandudza kusimba kwechisungo chekunamatira mataira nekugadzira firimu rakatetepa pakati peanonamira uye substrate. Iyo firimu inowedzera kunyorova kugona kwekunamatira uye inobvumira kuti iite chisungo chakasimba ne substrate.

Zvakanakira zveHPMC mukuvaka

Pane zvakati wandei zvakanakira kushandisa HPMC mukuvaka:

1. Kuvandudzwa kwekushanda: HPMC inogona kuvandudza kushanda kwematope uye stuccoes nekuwedzera kuwirirana kwavo uye kuderedza dambudziko rekuparadzanisa.

2. Ehance kuwirirana: HPMC inogona kuvandudza kubatanidzwa kwesement-based products nekuwedzera viscosity yavo uye kuchengetedza mvura.

3. Simba rekubatanidza zviri nani: HPMC inogona kuvandudza simba rekubatanidza rematairi ekunamatira kuburikidza nekugadzira firimu yakaonda pakati pekunamatira uye substrate.

4. Kupokana kwemvura: HPMC inogona kuvandudza kudzivirira kwemvura kwesimende-yakavakirwa zvigadzirwa zvakadai sematairi adhesives nekuvandudza kuchengetedza kwemvura uye kuderedza porosity yezvigadzirwa-samende.

5. Kemikari inopikisa: HPMC inogona kuwedzera kupikisa kwemakemikari yezvigadzirwa-samende nekuvandudza kuchengetwa kwemvura yezvigadzirwa zvesimende uye kuderedza reactivity yavo.

Mukupedzisa

HPMC ndeye multifunctional polymer inoshandiswa zvakanyanya se rheology modifier, inochengetedza mvura mumiriri uye inonamira mukuvaka. Hunhu hwayo hwakasiyana hunoita kuti ive chinhu chakakosha muzvigadzirwa zvesimende zvakaita sedhaka, plasters, plasters uye mataira anonamira. Kushandisa HPMC mukuvaka kunogona kuvandudza kushanda, kubatana, chisungo simba, mvura kuramba uye makemikari kuramba zvigadzirwa izvi. Semugadziri anotungamira weHPMC, tinopa huwandu hwakasiyana hwemagiredhi eHPMC kusangana nezvinodiwa nevatengi vedu. Bata nesu kuti udzidze zvakawanda nezve zvigadzirwa nemasevhisi edu.