Qhov sib txawv ntawm hydroxypropyl hmoov ether thiab hydroxypropylenchellulose hauv kev tsim kho

Hydroxypropyl starch ether (HPse) thiabHydroxyPropyyl methylcellulose (HPMC)Yog ob hom dej-soluble polymers feem ntau siv hauv kev tsim kho kev tsim kho. Thaum lawv qhia qee yam sib xws, muaj qhov sib txawv tseem ceeb hauv lawv cov qauv tshuaj lom neeg thiab kev ua tau zoo. Hauv qab no yog qhov sib txawv tseem ceeb ntawm hydroxypropyl hmoov ether thiab hydroxypropylulose hauv kev siv kev siv:

1. Cov qauv tshuaj:

• HPSE (HydroxyPropyl Starch ether):
  • Muab tau los ntawm cov hmoov txhuv nplej siab, uas yog cov carbohydrate tau los ntawm ntau cov nroj tsuag.
  • Hloov kho los ntawm hydroxyprodation los txhim kho nws cov khoom.
• HPMC (HydroxyPropyyl methylcellulose):
  • Muab tau los ntawm cellulose, lub ntuj polymer pom nyob rau hauv cov phab ntsa ntawm tes ntawm cov nroj tsuag.
  • Hloov kho los ntawm hydroxypropy thiab methylation kom ua tiav cov khoom xav tau.

2. Qhov khoom siv:

• HPSE:
  • Tau los ntawm tsob ntoo-based starch cov ntaub ntawv, xws li pob kws, qos yaj ywm, lossis tapioca.
• HPMC:
  • Muab tau los ntawm cov chaw cog qoob loo-rased cellulose, feem ntau ntoo pulp lossis paj rwb.

3. Solubility:

• HPSE:
  • Feem ntau cov khoom ua kom cov dej so kom zoo, tso cai rau kev rho tawm yooj yim hauv cov dej-raws li cov qauv.
• HPMC:
  • Cov dej ntws heev, kev ua cov kev daws teeb meem hauv dej.

4. Thermal gelation:

• HPSE:
  • Qee cov khoom siv Stydroxyprropyl tuaj yeem ua kom pom cov khoom siv gelation, uas cov viscosity ntawm kev daws teeb meem.
• HPMC:
  • Feem ntau tsis pom hluav taws xob thermal, thiab nws cov viscosity tseem nyob hauv ntau qhov kub.

5. Zaj duab xis-tsim cov khoom:

• HPSE:
  • Tuaj yeem tsim cov yeeb yaj kiab nrog kev hloov pauv tau zoo thiab cov khoom nplaum.
• HPMC:
  • Cov khoom ua yeeb yaj kiab zaj duab xis-tsim cov khoom, pab txhawb kom txhim kho adhesion thiab cohesion hauv kev tsim kho.

6. Lub luag haujlwm hauv kev tsim kho:

• HPSE:
  • Siv nyob rau hauv kev tsim kho cov ntawv thov rau nws cov thickening, dej tuav, thiab cov khoom nplaum. Tej zaum nws yuav ua haujlwm hauv Gypsum-based khoom, neeg nplua nuj, thiab cov nplaum.
• HPMC:
  • Dav siv nyob rau hauv kev tsim kho rau nws lub luag haujlwm ua cov tuab dua, dej tswjfwm cia sawv cev, thiab ua haujlwm kom haum. Nws yog feem ntau pom nyob rau hauv cement-raws li cortars, cov nplaum nplaum, grouts, thiab lwm yam qauv.

7. Sib txuam:

• HPSE:
  • Tau tshaj rau ntau yam kev tsim kho ntxiv thiab cov ntaub ntawv.
• HPMC:
  • Cov khoom ua pov thawj zoo sib xws nrog ntau yam kev tsim kho thiab ntxiv.

8. Teem sijhawm:

• HPSE:
  • Tej zaum yuav cuam tshuam lub sij hawm teeb lub sijhawm ntawm qee yam kev ua qauv.
• HPMC:
  • Muaj peev xwm cuam tshuam lub sij hawm lub sijhawm tshuaj khib thiab lwm cov khoom lag luam xis.

9. Yooj Yim:

• HPSE:
  • Films tsim los ntawm hydroxyproppyl punchch neeg muaj kev hais ua kom hloov tau.
• HPMC:
  • Pab txhawb kom yoog thiab tawg tsis kam rau hauv kev tsim qauv.

10. Daim ntawv thov cov chaw:

• HPSE:
  • Pom nyob rau hauv ntau yam ntawm cov khoom tsim kho, suav nrog plaster, putty, thiab cov qauv nplaum.
• HPMC:
  • Feem ntau siv nyob rau hauv cement-raws li cortars, cov nplaum nplaum, guts, thiab lwm yam kev tsim kho.

Hauv cov ntsiab lus xaus, thaum ob qho tib si hydroxypropyl starch ether (HPMC) pab lawv kom haum rau cov qauv zoo sib xws thiab cov ntawv thov hauv kev lag luam tsim tsev. Qhov kev xaiv ntawm lawv nyob ntawm qhov tshwj xeeb uas yog ntawm cov khoom siv tsim kho thiab cov yam ntxwv xav tau.