Cov hmoov txhuv nplej siab yog qhov hloov kho cov hmoov txhuv nplej siab uas tau txais kev saib xyuas ntau hauv ntau cov ntawv thov vim lawv cov khoom siv tau. Thaum nws yog feem ntau siv nyob rau hauv cov nplaum rau nws cov peev xwm ua tiav, nws cov nra rau cov dej kub siab nyob ntawm ntau yam.
1. Taw qhia rau Starch Ethere:
Starch Cov neeg muaj kev hais txog hmoov txhuv nplej siab yog derivatives ntawm ib txwm muaj hmoov txhuv nplej siab, uas yog polysaccharides pom hauv cov nroj tsuag. Los ntawm kev hloov kho tshuaj lom neeg, feem ntau cuam tshuam nrog etherification, cov hmoov txhuv nplej siab yog tsim los txhim kho lawv cov peev txheej thiab ua kom haum rau cov kev siv tshwj xeeb. Cov txheej txheem hloov kho hloov cov khoom siv hydrothilic thiab hydrophobic cov khoom ntawm cov hmoov txhuv nplej siab, yog li kev txhim kho kev ruaj khov, solubility thiab rheological cov khoom.
2. Cov khoom ntawm cov hmoov txhuv nplej siab ether:
Cov hmoov txhuv nplej siab muaj ob peb cov khoom tseem ceeb uas ua rau lawv txaus nyiam rau ntau cov ntawv thov kev lag luam, suav nrog cov nplaum. Cov khoom no suav nrog:
A. Cov dej ntws tawm: Cov hmoov txhuv nplej siab yog cov dej soluble thiab tuaj yeem yooj yim inhesive formulations thiab txhawb cov khoom ntub dej zoo nkauj.
b. Zaj duab xis-tsim muaj: Cov hmoov txhuv nplej siab tuaj yeem tsim cov yeeb yaj kiab uas pab cov nplaum kom cov nplaum thiab muab lub zog rau cov khoom nplaum.
C. thickener: nws ua raws li cov tuab dua hauv cov qauv nplaum, cuam tshuam rau viscosity thiab kev thov kev thov cov yam ntxwv.
d. Biodegradity: Cov hmoov txhuv nplej siab tau muab los ntawm cov peev txheej tshiab thiab yog li ntawd ib puag ncig ib puag ncig thiab haum rau kev thov kom tsom rau kev ruaj khov.
3. Cov ntawv thov cov nplaum ntawm cov hmoov txhuv nplej siab ether:
Cov hmoov txhuv nplej siab muaj peev xwm siv tau ntau yam nplaum ntawm cov nplaum, xws li:
A. Cov ntawv nplaum thiab ntim cov nplaum ntim cov khoom siv: Cov ntawv muaj kev paub ua ke muaj nyob rau hauv cov ntawv thiab ntim cov nplaum vim tias lawv zaj duab xis-tsim thiab cov khoom nplaum.
b. Cov nplaum tsim: Cov dej solubility thiab thickening muaj peev xwm ntawm starch ether ua rau kev siv cov nplaum tsim los pab cov ntaub ntawv tsim tsev.
C. Cov nplaum ntoo: hauv kev lag luam Woodwork, cov neeg muaj kev tsim txom cov hmoov txhuv nplej siab tau siv hauv cov nplaum ntoo kom muaj zog txhim kho thiab muab cov ruaj khov.
d. Textile cov nplaum: etherch ether yog siv rau hauv textile cov nplaum vim tias nws lub peev xwm rau kev sib tw fibers thiab nce tag nrho lub zog ntawm cov ntaub.
4. Kev ua tau zoo nyob ib puag ncig kub ib puag ncig:
Rau cov ntawv thov uas kub siab tau ntsib, kev ua yeeb yam ntawm cov hmoov txhuv nplej siab uas muaj cov neeg laus nyob hauv ib puag ncig qhov kub thiab qhov kev txiav txim siab tseem ceeb. Muaj ntau ntau yam uas cuam tshuam nws tus cwj pwm hauv qhov no:
A. Thermal stability: Cov neeg muaj kev tsis txaus siab ua rau muaj sib txawv ntawm lawv cov qib hloov kho thiab cov tshuaj uas tau hloov kho cov tshuaj lom neeg thov thaum lub sijhawm hais lus.
b. Gelatinization kub: lub gelatinization kub ntawm cov hmoov txhuv nplej siab ether yog qhov tseem ceeb ntsuas thiab yuav cuam tshuam los ntawm nws txoj kev hnyav thiab qib siab hloov chaw.
C. Viscosity Hloov: Kev kub siab tuaj yeem hloov pauv viscosity ntawm cov qauv nplaum ntawm cov hmoov txhuv nplej siab. Nkag siab cov kev hloov pauv no yog qhov tseem ceeb los ua kom muaj kev ua tau zoo sib xws.
d. Daim Ntawv Cog Lus: Qhov kev sib khi lus ntawm cov qauv muaj cov uas muaj cov neeg muaj kev ntseeg Starch yuav raug cuam tshuam los ntawm qhov ntsuas kub yog qhov yuav tsum tau ua.
5. Kev hloov kho lub tswv yim rau qhov kub thiab txias ruaj khov:
Txhawm rau txhim kho cov hmoov txhuv nplej siab ether ether nyob ib puag ncig, cov tswv yim hloov hauv qab no tuaj yeem sau:
A. Hla kev sib txuas: hla kev sib txuas cov hmoov txhuv nplej siab ether molecules nce rau kev hloov pauv hluav taws xob thiab kub ua rau muaj kev hloov pauv.
b. Nrog kev sib xyaw nrog cov cua sov-resistant polymers: sib txuas cov hmoov txhuv phom sij nrog cov qauv hybrid uas tswj ruaj khov ntawm kev kub siab.
C. Kev hloov kho tshuaj lom neeg: xws li cov lus qhia ntxiv cov tshuaj, tuaj yeem tshawb nrhiav cov pab pawg ua haujlwm sib dhos kom muaj kev paub txog kev kub siab.
6. Cov ntaub ntawv kev kawm thiab cov ntaub ntawv siv tswv yim:
Kev tshuaj xyuas cov ntaub ntawv tiag tiag tiag tiag thiab cov ntawv thov siv tau muab cov kev pom zoo rau kev ua tau zoo ntawm cov hmoov txhuv nplej siab hauv qhov chaw siab. Kev lag luam uas kub tsis kam yog qhov tseem ceeb, xws li kev kho tsheb, aerospace thiab hluav taws xob, tuaj yeem muab cov piv txwv zoo.
7. Cov kev txiav txim siab ib puag ncig:
Raws li kev txhawj xeeb ib puag ncig dhau los ua qhov tseem ceeb ntxiv, lub biodegradability ntawm cov hmoov txhuv nplej siab uas muaj kev hais tsis tau ntxiv. Kev tshuaj xyuas cov kev sib txuam ib puag ncig ntawm cov qauv nplaum nplaum uas muaj cov hmoov txhuv nplej siab hauv cov ntawv thov kub siab rau kev coj ua kom ruaj khov.
8. Cov lus qhia yav tom ntej thiab kev tshawb fawb:
Kev tshawb fawb txuas ntxiv thiab kev txhim kho hauv thaj teb WAS WETH hloov kho tau tuaj yeem qhib cov kev thov tshiab hauv ib puag ncig. Tshawb nrhiav cov txuj ci tshiab kev hloov kho, nkag siab txog cov txheej txheem hauv qab ntawm thermal stability, thiab kev paub txog cov neeg ua haujlwm ntawm lwm cov polymers yog cov chaw tsim nyog ntawm kev tshawb xyuas.
9. xaus:
Hauv cov ntsiab lus, cov hmoov txhuv nplej siab yog kev cog lus sib tw rau cov ntawv thov cov nplaum, muaj ntau cov khoom lag luam xav tau. Nws cov kev ua tau zoo nyob hauv cov dej kub siab nyob ntawm kev saib xyuas cov kev txiav txim siab xws li thermal stability, gelatinization kub thiab nyiaj ua zog. Los ntawm kev hloov kho tswv yim thiab kev tsim kho tshiab, kev siv cov hmoov txhuv nplej siab rau lawv txoj kev siv hauv kev lag luam uas kub ua hauj lwm yog qhov tseem ceeb. Raws li kev tshawb fawb nce zuj zus, lub luag haujlwm ntawm Starch muaj kev muaj kev muaj zog nyob rau hauv cov nplaum thov yog yuav nthuav dav, txuas ntxiv ua rau muaj ntau yam khoom nplaum thiab muaj cov nplaum nplaum nplaum.
Lub Sijhawm Post: Dec-02-2023