1. Lub npe khoom:
01. Lub npe tshuaj: hydroxypropyl methylcellulose
02. Lub npe tag nrho hauv lus Askiv: Hydroxypropyl Methyl Cellulose
03. Cov lus luv luv lus Askiv: HPMC
2. Cov khoom siv lub cev thiab tshuaj lom neeg:
01. Tsos: hmoov dawb los yog dawb tawm.
02. Qhov loj ntawm cov khoom me me; tus nqi dhau ntawm 100 mesh yog ntau dua 98.5%; tus nqi dhau ntawm 80 mesh yog ntau dua 100%.
03. Kub kub: 280 ~ 300 ℃
04. Qhov pom tseeb: 0.25 ~ 0.70 / cm3 (feem ntau nyob ib ncig ntawm 0.5g / cm3), qhov hnyav tshwj xeeb 1.26-1.31.
05. Kub hloov xim: 190 ~ 200 ℃
06. Qhov nro ntawm qhov chaw: 2% cov kua dej yog 42 ~ 56dyn / cm.
07. Yaj hauv dej thiab qee cov kuab tshuaj, xws li ethanol / dej, propanol / dej, trichloroethane, thiab lwm yam hauv cov feem pua kom tsim nyog.
Cov kua dej yog cov khoom siv nto. Kev pom tseeb siab, kev ua haujlwm ruaj khov, gel kub ntawm cov khoom nrog cov lus qhia sib txawv
Txawv, qhov solubility hloov pauv nrog viscosity, qhov qis dua qhov viscosity, qhov ntau dua qhov solubility, qhov kev ua tau zoo ntawm cov lus qhia sib txawv ntawm hydroxypropyl methylcellulose (HPMC) muaj qee qhov sib txawv, qhov kev yaj ntawm hydroxypropyl methylcellulose (HPMC) hauv dej tsis cuam tshuam rau PH tus nqi nyhuv.
08. Nrog rau qhov txo qis ntawm cov ntsiab lus methoxyl, qhov taw tes gel nce ntxiv, qhov dej solubility txo qis, thiab qhov ua haujlwm ntawm hydroxypropyl methylcellulose (HPMC) kuj txo qis.
09. Hydroxypropyl methylcellulose (HPMC) kuj muaj peev xwm ua kom tuab, tsis kam ntsev, hmoov tshauv tsawg, PH ruaj khov, khaws dej, ruaj khov, cov khoom ua yeeb yaj kiab zoo heev, thiab ntau yam kev tiv thaiv enzyme, cov yam ntxwv dispersion xws li kev sib deev thiab kev nplaum.
Peb, hydroxypropyl methylcellulose (HPMC) cov yam ntxwv:
Cov khoom no muaj ntau yam khoom siv lub cev thiab tshuaj lom neeg sib xyaw ua ke los ua ib yam khoom tshwj xeeb uas siv tau ntau yam, thiab ntau yam khoom muaj raws li nram no:
(1) Kev khaws dej: Nws tuaj yeem tuav dej rau ntawm cov qhov chaw xws li phab ntsa cement boards thiab cib.
(2) Kev tsim zaj duab xis: Nws tuaj yeem tsim ib zaj duab xis pob tshab, tawv thiab mos nrog kev tiv thaiv roj zoo heev.
(3) Kev yaj ntawm cov organic: Cov khoom no yaj tau hauv qee cov kuab tshuaj organic, xws li ethanol/dej, propanol/dej, dichloroethane, thiab cov kuab tshuaj uas muaj ob cov kuab tshuaj organic.
(4) Thermal gelation: Thaum cov kua dej ntawm cov khoom raug cua sov, nws yuav tsim ib lub gel, thiab cov gel uas tsim yuav dhau los ua cov kua dej dua tom qab txias.
(5) Kev Ua Haujlwm Ntawm Qhov Chaw: Muab kev ua haujlwm ntawm qhov chaw hauv cov tshuaj kom ua tiav qhov xav tau emulsification thiab kev tiv thaiv colloid, nrog rau kev ruaj khov theem.
(6) Kev Ncua: Nws tuaj yeem tiv thaiv kev nag lossis daus ntawm cov khoom khov kho, yog li ntawd inhibiting kev tsim ntawm cov av nkos.
(7) Kev tiv thaiv colloid: nws tuaj yeem tiv thaiv cov tee dej thiab cov khoom me me los ntawm kev sib sau ua ke lossis coagulating.
(8) Kev nplaum: Siv ua cov nplaum rau cov xim, cov khoom haus luam yeeb, thiab cov khoom ntawv, nws muaj kev ua tau zoo heev.
(9) Kev yaj dej: Cov khoom tuaj yeem yaj hauv dej ntau yam, thiab nws qhov siab tshaj plaws tsuas yog txwv los ntawm viscosity.
(10) Tsis yog-ionic inertness: Cov khoom yog cov cellulose ether uas tsis yog-ionic, uas tsis sib xyaw nrog cov ntsev hlau lossis lwm cov ions los tsim cov dej tsis yaj.
(11) Kev ruaj khov ntawm acid-base: tsim nyog rau kev siv hauv qhov ntau ntawm PH3.0-11.0.
(12) Tsis muaj saj thiab tsis muaj ntxhiab, tsis cuam tshuam los ntawm kev ua haujlwm ntawm lub cev; siv ua cov khoom noj thiab tshuaj ntxiv, lawv yuav tsis raug zom hauv cov khoom noj thiab yuav tsis muab cov calories.
4. Hydroxypropyl methylcellulose (HPMC) txoj kev yaj:
Thaum cov khoom hydroxypropyl methylcellulose (HPMC) raug ntxiv ncaj qha rau hauv dej, lawv yuav coagulate thiab tom qab ntawd yaj, tab sis qhov kev yaj no qeeb heev thiab nyuaj. Muaj peb txoj kev yaj pom zoo hauv qab no, thiab cov neeg siv tuaj yeem xaiv txoj kev yooj yim tshaj plaws raws li lawv siv:
1. Txoj kev siv dej kub: Vim tias hydroxypropyl methylcellulose (HPMC) tsis yaj hauv dej kub, theem pib ntawm hydroxypropyl methylcellulose (HPMC) tuaj yeem sib npaug hauv dej kub, thiab tom qab ntawd thaum nws txias, peb txoj kev ib txwm muaj piav qhia raws li hauv qab no:
1). Muab cov dej kub uas xav tau rau hauv lub thawv thiab ua kom sov txog li 70 ° C. Maj mam ntxiv hydroxypropyl methylcellulose (HPMC) hauv qab qeeb qeeb, hydroxypropyl methylcellulose (HPMC) pib ntab rau ntawm qhov dej, thiab tom qab ntawd maj mam ua cov slurry, txias cov slurry hauv qab stirring.
2). Ua kom sov 1/3 lossis 2/3 (qhov xav tau) dej hauv lub thawv thiab ua kom sov txog 70 ° C. Raws li txoj kev 1), faib cov hydroxypropyl methylcellulose (HPMC) los npaj cov dej kub slurry Tom qab ntawd ntxiv cov dej txias lossis dej khov seem hauv lub thawv, tom qab ntawd ntxiv cov hydroxypropyl methylcellulose (HPMC) dej kub slurry saum toj no rau hauv dej txias, thiab do, thiab tom qab ntawd txias cov khoom sib tov.
3). Ntxiv 1/3 lossis 2/3 ntawm cov dej uas xav tau rau hauv lub thawv thiab ua kom sov txog 70 ° C. Raws li txoj kev 1), faib cov hydroxypropyl methylcellulose (HPMC) los npaj cov dej kub slurry; Cov dej txias lossis dej khov seem tom qab ntawd ntxiv rau cov dej kub slurry thiab cov khoom sib tov txias tom qab do.
2. Txoj kev sib tov hmoov: hydroxypropyl methylcellulose (HPMC) cov hmoov me me thiab cov khoom sib npaug lossis ntau dua ntawm lwm cov khoom xyaw hmoov tau tawg tag nrho los ntawm kev sib tov qhuav, thiab tom qab ntawd yaj rau hauv dej, tom qab ntawd hydroxypropyl methylcellulose Base cellulose (HPMC) tuaj yeem yaj yam tsis muaj agglomeration. 3. Txoj kev ntub dej organic: ua ntej-disperse lossis ntub hydroxypropyl methylcellulose (HPMC) nrog cov organic solvents xws li ethanol, ethylene glycol lossis roj, thiab tom qab ntawd yaj nws hauv dej. Lub sijhawm no, hydroxypropyl methylcellulose (HPMC) kuj tuaj yeem yaj tau zoo.
5. Cov kev siv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC):
Hydroxypropyl methylcellulose (HPMC) siv tau ua cov khoom ua kom tuab, cov khoom tawg, cov khoom ua kom emulsifier thiab cov khoom ua zaj duab xis. Nws cov khoom lag luam siv tau rau hauv cov tshuaj txhua hnub, cov khoom siv hluav taws xob, cov khoom siv hluavtaws, kev tsim kho thiab cov tshuaj pleev xim.
1. Kev ncua polymerization:
Hauv kev tsim cov khoom siv hluavtaws xws li polyvinyl chloride (PVC), polyvinylidene chloride thiab lwm yam copolymers, kev ncua polymerization feem ntau yog siv thiab tsim nyog los tswj kev ncua ntawm hydrophobic monomers hauv dej. Raws li cov polymer yaj hauv dej, hydroxypropyl methylcellulose (HPMC) cov khoom muaj kev ua haujlwm zoo heev thiab ua haujlwm ua tus neeg sawv cev tiv thaiv colloidal, uas tuaj yeem tiv thaiv kev sib sau ua ke ntawm cov khoom polymer. Ntxiv mus, txawm hais tias hydroxypropylmethylcellulose (HPMC) yog cov polymer yaj hauv dej, nws kuj tseem yaj me ntsis hauv hydrophobic monomers thiab ua rau porosity ntawm cov monomers uas cov khoom polymeric tsim tawm, yog li nws tuaj yeem Muab cov polymers nrog lub peev xwm zoo heev los tshem tawm cov monomers seem thiab txhim kho kev nqus ntawm cov yas.
2. Hauv kev tsim cov ntaub ntawv siv hauv tsev, hydroxypropyl methylcellulose (HPMC) siv tau rau:
1). Cov nplaum thiab cov neeg sawv cev caulking rau cov kab xev nplaum gypsum;
2). Kev sib txuas ntawm cov cib, cov vuas thiab cov hauv paus uas ua los ntawm cement;
3). Cov plasterboard-raws li stucco;
4). Cov cement-based structural plaster;
5). Hauv cov mis ntawm cov xim thiab cov tshuaj pleev xim.
Lub sijhawm tshaj tawm: Tsib Hlis-24-2023