1. Daim ntawv thov tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
HPMC siv dav hauv cov ntaub ntawv siv hauv kev tsim kho, tshuaj pleev xim, cov khoom siv ua los ntawm cov khoom siv av nplaum, tshuaj, khoom noj, ntaub, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC muaj peev xwm muab faib ua qib tsim kho, qib zaub mov thiab qib tshuaj raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom lag luam hauv tsev yog qib tsim kho. Hauv qib tsim kho, hmoov putty siv ntau heev, kwv yees li 90% siv rau hmoov putty, thiab qhov seem siv rau cov cement mortar thiab kua nplaum.
2. Muaj ntau hom hydroxypropyl methylcellulose (HPMC), thiab qhov sib txawv ntawm lawv siv yog dab tsi?
HPMC muaj peev xwm muab faib ua hom tam sim ntawd thiab hom kub yaj. Cov khoom hom tam sim ntawd tawg sai sai hauv dej txias thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua tsis muaj viscosity vim HPMC tsuas yog tawg hauv dej yam tsis muaj kev yaj tiag tiag. Kwv yees li 2 feeb, qhov viscosity ntawm cov kua maj mam nce, tsim cov colloid viscous pob tshab. Cov khoom kub yaj, thaum ntsib nrog dej txias, tuaj yeem tawg sai sai hauv dej kub thiab ploj mus rau hauv dej kub. Thaum qhov kub poob rau qee qhov kub, qhov viscosity yuav maj mam tshwm sim kom txog thaum nws tsim cov colloid viscous pob tshab. Hom kub yaj tsuas yog siv tau rau hauv hmoov putty thiab mortar. Hauv kua nplaum thiab xim, yuav muaj qhov tshwm sim pawg thiab tsis tuaj yeem siv. Hom tam sim ntawd muaj ntau yam kev siv. Nws tuaj yeem siv rau hauv hmoov putty thiab mortar, nrog rau kua nplaum thiab xim, tsis muaj kev tsis sib haum xeeb.
3. Cov txheej txheem yaj ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Txoj kev yaj dej kub: Vim tias HPMC tsis yaj hauv dej kub, HPMC tuaj yeem yaj sib npaug hauv dej kub thaum pib, thiab tom qab ntawd yaj sai sai thaum txias. Ob 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. Cov hydroxypropyl methylcellulose maj mam ntxiv rau hauv qab qeeb qeeb, thaum xub thawj HPMC ntab rau saum npoo dej, thiab tom qab ntawd maj mam tsim cov slurry, uas tau txias hauv qab nplawm.
2), ntxiv 1/3 lossis 2/3 ntawm cov dej uas xav tau rau hauv lub thawv, thiab ua kom sov txog 70 ° C, faib HPMC raws li txoj kev 1), thiab npaj cov dej kub slurry; tom qab ntawd ntxiv cov dej txias seem rau hauv cov dej kub slurry, qhov sib tov tau txias tom qab do.
Txoj kev sib tov hmoov: sib tov HPMC hmoov nrog ntau yam khoom hmoov, sib tov kom huv si nrog lub tshuab sib tov, thiab tom qab ntawd ntxiv dej kom yaj, ces HPMC tuaj yeem yaj tau lub sijhawm no yam tsis muaj kev sib sau ua ke, vim tias tsuas muaj me ntsis HPMC hauv txhua lub ces kaum me me Hmoov, yuav yaj tam sim ntawd thaum sib cuag nrog dej. —— Cov chaw tsim khoom hmoov Putty thiab cov tshuaj khib siv txoj kev no. [Hydroxypropyl methylcellulose (HPMC) yog siv los ua cov khoom ua kom tuab thiab khaws dej hauv cov tshuaj khib hmoov putty.]
4. Yuav ua li cas txiav txim siab qhov zoo ntawm hydroxypropyl methylcellulose (HPMC) yooj yim thiab intuitively?
(1) Kev dawb: Txawm hais tias kev dawb tsis tuaj yeem txiav txim siab seb HPMC puas yooj yim siv, thiab yog tias cov neeg sawv cev dawb ntxiv thaum lub sijhawm tsim khoom, nws yuav cuam tshuam rau nws qhov zoo. Txawm li cas los xij, feem ntau ntawm cov khoom zoo muaj kev dawb zoo.
(2) Kev Zoo: Qhov zoo ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau HPMC tsim tawm hauv Hebei yog 80 mesh. Qhov zoo dua qhov zoo, feem ntau hais lus, qhov zoo dua.
(3) Kev xa hluav taws xob: muab hydroxypropyl methylcellulose (HPMC) rau hauv dej kom tsim tau cov pob tshab colloid, thiab saib nws cov kev xa hluav taws xob. Qhov kev xa hluav taws xob ntau dua, qhov zoo dua, qhia tias muaj cov insolubles tsawg dua hauv nws. . Qhov permeability ntawm cov reactors ntsug feem ntau zoo, thiab ntawm cov reactors kab rov tav yog qhov phem dua, tab sis nws tsis txhais tau tias qhov zoo ntawm cov reactors ntsug zoo dua li ntawm cov reactors kab rov tav, thiab qhov zoo ntawm cov khoom yog txiav txim siab los ntawm ntau yam.
(4) Qhov hnyav tshwj xeeb: Qhov hnyav tshwj xeeb loj dua, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb loj, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl pawg hauv nws siab, thiab cov ntsiab lus ntawm hydroxypropyl pawg siab, cov dej khaws cia zoo dua.
5. Muaj pes tsawg hydroxypropyl methylcellulose (HPMC) nyob rau hauv cov hmoov putty?
Tus nqi ntawm HPMC siv rau hauv kev siv tiag tiag sib txawv nyob ntawm qhov chaw huab cua, qhov kub thiab txias, qhov zoo ntawm cov tshauv calcium hauv zos, cov mis hmoov putty thiab "qhov zoo uas cov neeg siv khoom xav tau". Feem ntau hais lus, ntawm 4 kg thiab 5 kg. Piv txwv li: feem ntau ntawm cov hmoov putty hauv Beijing yog 5 kg; feem ntau ntawm cov hmoov putty hauv Guizhou yog 5 kg thaum lub caij ntuj sov thiab 4.5 kg thaum lub caij ntuj no; tus nqi ntawm putty hauv Yunnan yog qhov me me, feem ntau 3 kg txog 4 kg, thiab lwm yam.
6. Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Feem ntau cov hmoov putty yog 100,000 yuan, thiab qhov yuav tsum tau rau cov mortar yog siab dua, thiab 150,000 yuan yog qhov xav tau rau kev siv yooj yim. Ntxiv mus, qhov tseem ceeb tshaj plaws ntawm HPMC yog kev khaws cia dej, ua raws li kev tuab. Hauv cov hmoov putty, tsuav yog qhov khaws cia dej zoo thiab qhov viscosity qis (70,000-80,000), nws kuj ua tau. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov khaws cia dej. Thaum qhov viscosity tshaj 100,000, qhov viscosity yuav cuam tshuam rau qhov khaws cia dej. Tsis ntau lawm.
7. Cov cim qhia tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Cov ntsiab lus Hydroxypropyl thiab viscosity, feem ntau cov neeg siv txhawj xeeb txog ob qho cim no. Cov neeg uas muaj cov ntsiab lus hydroxypropyl siab feem ntau muaj kev khaws cia dej zoo dua. Ib qho uas muaj viscosity siab muaj kev khaws cia dej zoo dua, piv rau (tsis yog kiag li), thiab ib qho uas muaj viscosity siab zoo dua siv rau hauv cov cement mortar.
8. Cov khoom siv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Cov khoom siv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC): paj rwb zoo, methyl chloride, propylene oxide, thiab lwm yam khoom siv raw, caustic soda, acid, toluene, isopropanol, thiab lwm yam.
9. Lub luag haujlwm tseem ceeb ntawm daim ntawv thov HPMC hauv cov hmoov putty yog dab tsi, thiab nws puas tshwm sim los ntawm tshuaj lom neeg?
Hauv cov hmoov putty, HPMC ua peb lub luag haujlwm ntawm kev ua kom tuab, khaws dej thiab tsim kho. Kev ua kom tuab: Cellulose tuaj yeem ua kom tuab kom ncua thiab khaws cov tshuaj sib xws nce thiab nqis, thiab tiv taus kev poob qis. Kev khaws dej: ua kom cov hmoov putty qhuav qeeb qeeb, thiab pab cov tshauv calcium kom ua haujlwm raws li dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo. HPMC tsis koom nrog hauv kev tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm pabcuam. Ntxiv dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog kev tshuaj lom neeg, vim tias cov tshuaj tshiab tau tsim. Yog tias koj tshem cov hmoov putty ntawm phab ntsa ntawm phab ntsa, zom nws ua hmoov, thiab siv nws dua, nws yuav tsis ua haujlwm vim tias cov tshuaj tshiab (calcium carbonate) tau tsim.) ib yam nkaus. Cov khoom tseem ceeb ntawm cov hmoov tshauv calcium yog: sib xyaw ntawm Ca (OH) 2, CaO thiab me me ntawm CaCO3, CaO + H2O = Ca (OH) 2—Ca (OH) 2 + CO2 = CaCO3↓ + H2O Cov tshauv calcium nyob hauv dej thiab huab cua Hauv qab qhov kev ua ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas yog khaws dej, pab txhawb kev ua haujlwm zoo dua ntawm cov tshauv calcium, thiab tsis koom nrog hauv kev ua haujlwm nws tus kheej.
10. HPMC yog ib qho non-ionic cellulose ether, yog li ntawd non-ionic yog dab tsi?
Hauv cov lus yooj yim, cov non-ions yog cov tshuaj uas tsis ionize hauv dej. Ionization yog hais txog cov txheej txheem uas cov electrolyte raug dissociated mus rau hauv cov ions them uas tuaj yeem txav mus los tau yooj yim hauv cov kuab tshuaj tshwj xeeb (xws li dej, cawv). Piv txwv li, sodium chloride (NaCl), cov ntsev uas peb noj txhua hnub, yaj hauv dej thiab ionizes los tsim cov sodium ions (Na +) uas muaj nqi zoo thiab chloride ions (Cl) uas muaj nqi tsis zoo. Uas yog hais tias, thaum HPMC raug muab tso rau hauv dej, nws yuav tsis dissociate mus rau hauv cov ions them, tab sis muaj nyob rau hauv daim ntawv ntawm cov molecules.
11. Qhov kub ntawm hydroxypropyl methylcellulose hauv gel muaj feem xyuam li cas?
Qhov kub ntawm gel ntawm HPMC muaj feem cuam tshuam nrog nws cov ntsiab lus methoxy, qhov qis dua cov ntsiab lus methoxy ↓, qhov siab dua qhov kub ntawm gel ↑.
12. Puas muaj kev sib raug zoo ntawm qhov poob ntawm cov hmoov putty thiab HPMC?
Qhov poob ntawm cov hmoov putty feem ntau yog cuam tshuam nrog qhov zoo ntawm cov tshauv calcium, thiab tsis muaj feem cuam tshuam nrog HPMC. Cov calcium tsawg ntawm grey calcium thiab qhov sib piv tsis raug ntawm CaO thiab Ca (OH) 2 hauv grey calcium yuav ua rau poob hmoov. Yog tias nws muaj feem cuam tshuam nrog HPMC, ces yog tias HPMC tsis khaws dej zoo, nws kuj tseem yuav ua rau poob hmoov. Yog vim li cas tshwj xeeb, thov saib lo lus nug 9.
13. Qhov txawv ntawm hom dej txias uas yaj tau sai thiab hom hydroxypropyl methylcellulose uas yaj tau kub hauv cov txheej txheem tsim khoom yog dab tsi?
Cov HPMC uas siv dej txias tam sim ntawd yog kho nrog glyoxal, thiab nws tawg sai sai hauv dej txias, tab sis nws tsis yaj tiag tiag. Nws tsuas yaj thaum qhov viscosity nce ntxiv. Cov hom kub yaj tsis kho nrog glyoxal. Yog tias glyoxal muaj ntau, qhov tawg yuav sai, tab sis qhov viscosity yuav nce qeeb, thiab yog tias me me, qhov sib txawv yuav yog qhov tseeb.
14. Hydroxypropyl methylcellulose (HPMC) muaj ntxhiab li cas?
Cov HPMC uas tsim los ntawm txoj kev siv cov tshuaj yaj siv toluene thiab isopropanol ua cov tshuaj yaj. Yog tias ntxuav tsis zoo heev, yuav muaj qee qhov tsw ntxhiab seem.
15. Yuav ua li cas xaiv hydroxypropyl methylcellulose (HPMC) uas haum rau ntau lub hom phiaj sib txawv?
Kev siv cov hmoov putty: qhov yuav tsum tau ua yog qis, qhov viscosity yog 100,000, nws txaus, qhov tseem ceeb yog kom dej zoo. Kev siv cov mortar: qhov yuav tsum tau ua siab dua, viscosity siab, 150,000 zoo dua. Kev siv cov kua nplaum: cov khoom lag luam tam sim ntawd nrog viscosity siab yog qhov yuav tsum tau ua.
16. Lub npe cuav ntawm hydroxypropyl methylcellulose yog dab tsi?
Hydroxypropyl methyl cellulose, Lus Askiv: Hydroxypropyl Methyl Cellulose Lub Npe Luv: HPMC lossis MHPC Alias: hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
17. Daim ntawv thov ntawm HPMC hauv putty hmoov, dab tsi yog qhov laj thawj rau cov npuas hauv cov hmoov putty?
Hauv cov hmoov putty, HPMC ua peb lub luag haujlwm ntawm kev ua kom tuab, khaws dej thiab tsim kho. Tsis txhob koom nrog kev tsis haum tshuaj. Vim li cas rau cov npuas: 1. Muab dej ntau dhau. 2. Txheej hauv qab tsis qhuav, tsuas yog khawb lwm txheej rau saum, thiab nws yooj yim ua npuas.
18. Cov mis ntawm cov hmoov putty rau phab ntsa sab hauv thiab sab nraud yog dab tsi?
Sab hauv phab ntsa putty hmoov: hnyav calcium 800KG, tshauv calcium 150KG (starch ether, ntshiab ntsuab, Pengrun av, citric acid, polyacrylamide, thiab lwm yam tuaj yeem ntxiv kom haum)
Phab ntsa sab nraud putty hmoov: cement 350KG hnyav calcium 500KG quartz xuab zeb 150KG latex hmoov 8-12KG cellulose ether 3KG hmoov txhuv nplej siab ether 0.5KG ntoo fiber 2KG
19. Qhov txawv ntawm HPMC thiab MC yog dab tsi?
MC yog methyl cellulose, uas yog ua los ntawm cellulose ether los ntawm kev kho cov paj rwb zoo nrog alkali, siv methane chloride ua tus neeg sawv cev etherification, thiab dhau los ntawm ntau yam kev tshuaj tiv thaiv. Feem ntau, qib ntawm kev hloov pauv yog 1.6 ~ 2.0, thiab solubility kuj txawv nrog ntau qib ntawm kev hloov pauv. Nws yog rau cov cellulose ether uas tsis yog ionic.
(1) Qhov khaws dej ntawm methyl cellulose nyob ntawm nws qhov ntxiv ntau npaum li cas, viscosity, qhov zoo ntawm cov khoom me me thiab qhov nrawm ntawm kev yaj. Feem ntau, yog tias qhov ntxiv ntau npaum li cas, qhov zoo me me, thiab qhov viscosity loj, qhov nrawm ntawm kev khaws dej siab. Ntawm lawv, qhov nrawm ntawm kev ntxiv muaj qhov cuam tshuam loj tshaj plaws rau qhov nrawm ntawm kev khaws dej, thiab qib ntawm viscosity tsis ncaj qha rau qib ntawm kev khaws dej. Qhov nrawm ntawm kev yaj feem ntau nyob ntawm qib ntawm kev hloov pauv ntawm qhov chaw ntawm cov khoom me me cellulose thiab qhov zoo ntawm cov khoom me me. Ntawm cov cellulose ethers saum toj no, methyl cellulose thiab hydroxypropyl methyl cellulose muaj qhov nrawm ntawm kev khaws dej siab dua.
(2) Methylcellulose yaj tau hauv dej txias, thiab nws yuav nyuaj rau yaj hauv dej kub. Nws cov kua dej ruaj khov heev hauv pH = 3 ~ 12. Nws muaj kev sib raug zoo nrog cov hmoov txhuv nplej siab, cov roj hmab guar, thiab lwm yam thiab ntau yam surfactants. Thaum qhov kub ncav cuag qhov kub gelation, gelation tshwm sim.
(3) Kev hloov pauv ntawm qhov kub thiab txias yuav cuam tshuam loj heev rau qhov ceev ntawm cov methyl cellulose uas khaws dej. Feem ntau, qhov kub siab dua, qhov kev khaws dej yuav phem dua. Yog tias qhov kub ntawm cov mortar tshaj 40 ° C, qhov kev khaws dej ntawm methyl cellulose yuav raug txo qis, cuam tshuam loj heev rau kev tsim cov mortar.
(4) Methyl cellulose muaj feem cuam tshuam loj rau kev tsim kho thiab kev nplaum ntawm cov mortar. Qhov "kev nplaum" ntawm no yog hais txog lub zog nplaum uas hnov ntawm tus neeg ua haujlwm lub cuab yeej thov thiab phab ntsa substrate, uas yog, qhov kev tiv thaiv shear ntawm cov mortar. Qhov kev nplaum yog siab, qhov kev tiv thaiv shear ntawm cov mortar yog loj, thiab lub zog uas cov neeg ua haujlwm xav tau hauv cov txheej txheem ntawm kev siv kuj loj, thiab kev ua haujlwm ntawm cov mortar tsis zoo. Methyl cellulose adhesion yog nyob rau theem nruab nrab hauv cov khoom cellulose ether.
HPMC yog hydroxypropyl methylcellulose, uas yog cov cellulose sib xyaw ether uas tsis yog ionic ua los ntawm paj rwb zoo tom qab alkalization, siv propylene oxide thiab methyl chloride ua cov neeg sawv cev etherification, thiab los ntawm ntau qhov kev tshuaj tiv thaiv. Qhov degree ntawm kev hloov pauv feem ntau yog 1.2 ~ 2.0. Nws cov khoom sib txawv vim yog qhov sib txawv ntawm cov ntsiab lus methoxyl thiab cov ntsiab lus hydroxypropyl.
(1) Hydroxypropyl methylcellulose yooj yim yaj hauv dej txias, thiab nws yuav ntsib teeb meem hauv kev yaj hauv dej kub. Tab sis nws qhov kub gelation hauv dej kub yog siab dua li ntawm methyl cellulose. Qhov solubility hauv dej txias kuj zoo dua piv rau methyl cellulose.
(2) Qhov viscosity ntawm hydroxypropyl methylcellulose muaj feem cuam tshuam nrog nws qhov hnyav molecular, thiab qhov loj dua qhov hnyav molecular, qhov siab dua qhov viscosity. Kub kuj cuam tshuam rau nws qhov viscosity, thaum kub nce, viscosity txo qis. Txawm li cas los xij, nws qhov viscosity siab muaj qhov kub qis dua li methyl cellulose. Nws cov kua ruaj khov thaum khaws cia rau hauv chav sov.
(3) Hydroxypropyl methylcellulose ruaj khov rau cov kua qaub thiab alkali, thiab nws cov kua dej ruaj khov heev hauv pH = 2 ~ 12. Caustic soda thiab dej txiv qaub tsis muaj feem cuam tshuam rau nws cov kev ua tau zoo, tab sis alkali tuaj yeem ua kom nws cov yaj sai dua thiab ua rau nws cov viscosity nce ntxiv. Hydroxypropyl methylcellulose ruaj khov rau cov ntsev feem ntau, tab sis thaum qhov concentration ntawm cov ntsev daws siab, qhov viscosity ntawm hydroxypropyl methylcellulose kua feem ntau nce ntxiv.
(4) Qhov khaws cia dej ntawm hydroxypropyl methylcellulose nyob ntawm nws qhov ntxiv, viscosity, thiab lwm yam, thiab nws qhov khaws cia dej nyob rau hauv tib qhov ntxiv yog siab dua li ntawm methyl cellulose.
(5) Hydroxypropyl methylcellulose tuaj yeem sib xyaw nrog cov polymer sib xyaw uas yaj tau hauv dej los ua cov kua nplaum uas sib xws thiab viscosity siab dua. Xws li polyvinyl cawv, hmoov txhuv nplej siab ether, cov roj zaub, thiab lwm yam.
(6) Qhov nplaum ntawm hydroxypropyl methylcellulose rau kev tsim kho mortar siab dua li ntawm methylcellulose.
(7) Hydroxypropyl methylcellulose muaj kev tiv thaiv enzyme zoo dua li methylcellulose, thiab nws cov kua tsis tshua muaj peev xwm raug rhuav tshem los ntawm cov enzymes dua li methylcellulose.
20. Yuav tsum tau them sai sai rau dab tsi hauv kev siv tiag tiag ntawm kev sib raug zoo ntawm viscosity thiab kub ntawm HPMC?
Qhov viscosity ntawm HPMC yog inversely proportional rau qhov kub thiab txias, uas yog, qhov viscosity nce ntxiv thaum qhov kub thiab txias txo qis. Qhov viscosity ntawm cov khoom uas peb feem ntau xa mus rau yog hais txog qhov tshwm sim ntawm kev sim ntawm nws 2% aqueous kua ntawm qhov kub ntawm 20 degrees Celsius.
Hauv kev siv ua haujlwm, yuav tsum nco ntsoov tias nyob rau hauv thaj chaw uas muaj qhov sib txawv ntawm qhov kub thiab txias ntawm lub caij ntuj sov thiab lub caij ntuj no, nws raug pom zoo kom siv cov viscosity qis dua thaum lub caij ntuj no, uas yog qhov zoo dua rau kev tsim kho. Txwv tsis pub, thaum qhov kub qis, qhov viscosity ntawm cellulose yuav nce ntxiv, thiab tes yuav hnyav thaum khawb.
Nruab nrab viscosity: 75000-100000 feem ntau yog siv rau putty
Vim li cas: kev khaws dej zoo
Siab viscosity: 150000-200000 Feem ntau siv rau polystyrene particle thermal insulation mortar roj hmab hmoov thiab vitrified microbead thermal insulation mortar.
Vim li cas: Qhov viscosity siab, cov mortar tsis yooj yim poob, sag, thiab kev tsim kho tau zoo dua.
Tab sis feem ntau hais lus, qhov siab dua qhov viscosity, qhov zoo dua qhov khaws cia dej. Yog li ntawd, xav txog tus nqi, ntau lub Hoobkas hmoov qhuav hloov cov cellulose viscosity nruab nrab thiab qis (20000-40000) nrog cov cellulose viscosity nruab nrab (20000-40000) kom txo qhov ntau ntxiv. .
Lub sijhawm tshaj tawm: Kaum Ib Hlis-18-2022