1. Kev siv tseem ceeb ntawm hydroxypropyl methylcellulose yog dab tsi?
HPMC siv dav hauv cov ntaub ntawv tsim kho, tshuaj pleev xim, cov khoom siv ua los ntawm cov khoom siv av nplaum, tshuaj, khoom noj, textiles, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC tuaj yeem muab faib ua qib kev lag luam, qib zaub mov thiab qib tshuaj raws li nws siv.
2. Muaj ntau hom hydroxypropyl methylcellulose. Qhov txawv ntawm lawv yog dab tsi?
HPMC muaj peev xwm muab faib ua hom tam sim ntawd (hom tom qab "S") thiab hom kub-soluble. Cov khoom hom tam sim ntawd disperse sai sai hauv dej txias thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua tsis muaj viscosity vim HPMC tsuas yog disperse hauv dej thiab tsis muaj cov tshuaj tiag tiag. Tom qab li (do) 2 feeb, qhov viscosity ntawm cov kua maj mam nce thiab cov pob tshab viscous colloid tau tsim. Cov khoom kub-soluble, hauv dej txias, tuaj yeem disperse sai sai hauv dej kub thiab ploj mus rau hauv dej kub. Thaum qhov kub poob rau qee qhov kub (raws li qhov kub gel ntawm cov khoom), qhov viscosity maj mam tshwm sim kom txog thaum cov pob tshab thiab viscous colloid tau tsim.
3. Cov txheej txheem daws teeb meem hydroxypropyl methylcellulose yog dab tsi?
1. Tag nrho cov qauv tuaj yeem ntxiv rau cov khoom siv los ntawm kev sib tov qhuav;
2. Yuav tsum ntxiv ncaj qha rau hauv cov kua dej kub ib txwm. Zoo tshaj plaws yog siv hom dej txias. Tom qab ntxiv, feem ntau nws yuav tuab li ntawm 10-90 feeb (do, do, do).
3. Rau cov qauv ib txwm, do thiab disperse nrog dej kub ua ntej, tom qab ntawd ntxiv dej txias kom yaj tom qab do thiab txias.
4. Yog tias muaj kev sib sau ua ke lossis kev qhwv thaum lub sijhawm yaj, nws yog vim tias qhov kev sib xyaw tsis txaus lossis tus qauv ib txwm raug ntxiv ncaj qha rau hauv dej txias. Ntawm lub sijhawm no, sib xyaw sai sai.
5. Yog tias cov npuas dej tshwm sim thaum lub sijhawm yaj, lawv tuaj yeem tso tseg rau 2-12 teev (lub sijhawm tshwj xeeb nyob ntawm qhov sib xws ntawm cov tshuaj) lossis tshem tawm los ntawm kev rho tawm hauv lub tshuab nqus tsev, kev nias, thiab lwm yam, thiab kuj tuaj yeem ntxiv cov tshuaj defoaming kom tsim nyog.
4. Yuav ua li cas txiav txim siab qhov zoo ntawm hydroxypropyl methylcellulose yooj yim thiab intuitively?
1. Kev dawb. Txawm hais tias kev dawb tsis tuaj yeem txiav txim siab seb HPMC puas zoo lossis tsis zoo, thiab kev ntxiv cov neeg sawv cev dawb thaum lub sijhawm tsim khoom yuav cuam tshuam rau nws qhov zoo, feem ntau cov khoom zoo muaj kev dawb zoo.
2. Kev Zoo: HPMC fineness feem ntau yog 80 mesh thiab 100 mesh, hauv qab 120, qhov zoo dua qhov zoo dua.
3. Kev xa hluav taws xob: HPMC tsim cov colloid pob tshab hauv dej. Saib ntawm qhov xa hluav taws xob. Qhov loj dua qhov xa hluav taws xob, qhov zoo dua qhov permeability, uas txhais tau tias muaj cov tshuaj tsis yaj tsawg dua hauv nws. Lub tshuab hluav taws xob ntsug feem ntau zoo, thiab lub tshuab hluav taws xob kab rov tav yuav tso tawm qee qhov. Tab sis nws tsis tuaj yeem hais tias qhov zoo ntawm cov kettles ntsug zoo dua li ntawm cov kettles kab rov tav. Muaj ntau yam uas txiav txim siab qhov zoo ntawm cov khoom.
4. Qhov hnyav tshwj xeeb: Qhov hnyav tshwj xeeb ntau dua, qhov hnyav dua qhov zoo dua. Qhov hnyav tshwj xeeb ntau dua, qhov ntau dua cov hydroxypropyl cov ntsiab lus yog. Feem ntau, qhov ntau dua cov hydroxypropyl cov ntsiab lus, qhov zoo dua qhov khaws cia dej.
5. Siv hydroxypropyl methylcellulose ntau npaum li cas hauv cov hmoov putty?
Tus nqi ntawm HPMC siv rau hauv cov ntawv thov tiag tiag txawv ntawm qhov chaw mus rau qhov chaw, feem ntau hais lus, nws yog ntawm 4-5 kg, nyob ntawm qhov chaw huab cua, kub, qhov zoo ntawm cov tshauv calcium hauv zos, cov mis hmoov putty thiab cov kev xav tau zoo ntawm cov neeg siv khoom.
6. Qhov viscosity ntawm hydroxypropyl methylcellulose yog dab tsi?
Feem ntau cov hmoov putty raug nqi RMB 100,000, thaum cov mortar muaj cov kev xav tau siab dua. Nws raug nqi RMB 150,000 kom yooj yim siv. Ntxiv mus, lub luag haujlwm tseem ceeb ntawm HPMC yog khaws dej, ua raws li kev ua kom tuab. Hauv cov hmoov putty, tsuav yog qhov khaws dej zoo thiab qhov viscosity qis (7-8), nws kuj ua tau. Tau kawg, qhov viscosity ntau dua, qhov zoo dua qhov khaws dej. Thaum qhov viscosity siab dua 100,000, qhov viscosity tsis muaj feem cuam tshuam rau qhov khaws dej.
7. Cov cim qhia tseem ceeb ntawm hydroxypropyl methylcellulose yog dab tsi?
Cov ntsiab lus ntawm Hydroxypropyl
Cov ntsiab lus ntawm methyl
viscosity
Tshauv
kev poob phaus qhuav
8. Cov khoom siv tseem ceeb ntawm hydroxypropyl methylcellulose yog dab tsi?
Cov ntaub ntawv tseem ceeb ntawm HPMC: paj rwb zoo, methyl chloride, propylene oxide, lwm yam ntaub ntawv raw, caustic soda, thiab acid toluene.
9. Daim ntawv thov thiab lub luag haujlwm tseem ceeb ntawm hydroxypropyl methylcellulose hauv cov hmoov putty, puas yog tshuaj lom neeg?
Hauv cov hmoov putty, nws ua peb lub luag haujlwm tseem ceeb: ua kom tuab, khaws dej thiab tsim kho. Kev ua kom tuab tuaj yeem ua rau cellulose tuab thiab ua lub luag haujlwm ncua, ua kom cov tshuaj sib npaug thiab tsis txhob poob qis. Kev khaws dej: Ua kom cov hmoov putty qhuav qeeb dua thiab pab cov calcium grey kom ua haujlwm hauv qab dej. Kev ua haujlwm tau zoo: Cellulose muaj cov nyhuv lubricating, uas ua rau cov hmoov putty muaj kev ua haujlwm zoo. HPMC tsis koom nrog kev tshuaj lom neeg thiab tsuas yog ua lub luag haujlwm txhawb nqa.
10. Hydroxypropyl methylcellulose yog ib hom cellulose ether uas tsis yog ionic, yog li ntawd hom non-ionic yog dab tsi?
Feem ntau hais lus, cov tshuaj inert tsis koom nrog hauv cov tshuaj lom neeg.
CMC (carboxymethylcellulose) yog ib qho cationic cellulose thiab yuav hloov mus ua cov tofu dregs thaum raug rau calcium tshauv.
11. Qhov kub ntawm hydroxypropyl methylcellulose hauv gel muaj feem xyuam li cas?
Qhov kub ntawm HPMC hauv gel muaj feem cuam tshuam nrog nws cov ntsiab lus methoxyl. Qhov qis dua ntawm cov ntsiab lus methoxyl, qhov siab dua ntawm qhov kub ntawm gel.
12. Puas muaj kev sib raug zoo ntawm cov hmoov putty thiab hydroxypropyl methylcellulose?
Qhov no tseem ceeb heev! HPMC tsis khaws dej zoo thiab yuav ua rau muaj hmoov av.
13. Qhov txawv ntawm cov txheej txheem tsim khoom ntawm cov kua dej txias thiab cov kua dej kub ntawm hydroxypropyl methylcellulose yog dab tsi?
HPMC hom uas yaj tau hauv dej txias sai sai tom qab kho nrog glyoxal, tab sis nws tsis yaj tiag tiag. Qhov viscosity nce, uas yog, nws yaj. Hom kub yaj tsis kho nrog glyoxal. Glyoxal loj thiab tawg sai, tab sis nws muaj viscosity qeeb thiab me me, thiab rov qab los.
14. Hydroxypropyl methylcellulose muaj ntxhiab li cas?
HPMC tsim los ntawm txoj kev siv cov tshuaj yaj yog ua los ntawm toluene thiab isopropyl cawv ua cov tshuaj yaj. Yog tias tsis ntxuav kom huv, yuav muaj qee qhov tsw ntxhiab seem. (Kev ua kom tsis muaj ntxhiab thiab rov ua dua tshiab yog ib qho txheej txheem tseem ceeb rau tsw ntxhiab)
15. Yuav ua li cas xaiv cov hydroxypropyl methylcellulose uas tsim nyog rau ntau yam kev siv?
Hmoov putty: qhov yuav tsum tau khaws dej ntau thiab yooj yim rau kev tsim kho (hom pom zoo: 7010N)
Cov cement-based mortar: khaws dej tau zoo, tiv taus kub siab, viscosity tam sim ntawd (qib pom zoo: HPK100M)
Cov nplaum siv rau kev tsim kho: cov khoom siv tau sai, viscosity siab. (Hom pom zoo: HPK200MS)
Gypsum mortar: khaws dej siab, viscosity nruab nrab-qis, viscosity tam sim ntawd (qib pom zoo: HPK600M)
16. Lub npe hydroxypropyl methylcellulose lwm lub npe yog dab tsi?
HPMC lossis MHPC kuj tseem hu ua hydroxypropyl methylcellulose thiab hydroxypropyl methylcellulose ether.
17. Kev siv hydroxypropyl methylcellulose rau hauv cov hmoov putty. Dab tsi ua rau cov hmoov putty ua npuas ncauj?
HPMC ua peb lub luag haujlwm tseem ceeb hauv cov hmoov putty: thickening, water retention thiab construction. Cov laj thawj rau cov npuas yog:
1. Ntxiv dej ntau dhau.
2. Yog tias hauv qab tsis qhuav, khawb lwm txheej rau saum yuav ua rau cov pob khaus yooj yim.
18. Qhov txawv ntawm hydroxypropyl methylcellulose thiab MC yog dab tsi:
MC, methyl cellulose, yog ua los ntawm paj rwb zoo tom qab kho alkali, siv methane chloride ua tus neeg sawv cev etherifying, thiab ntau yam kev tshuaj tiv thaiv los tsim cov cellulose ether. Qhov degree ntawm kev hloov pauv yog 1.6-2.0, thiab qhov solubility ntawm ntau degrees ntawm kev hloov pauv kuj txawv. Nws yog cov cellulose ether uas tsis yog ionic.
(1) Qhov khaws dej ntawm methylcellulose 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 hais lus, qhov ntxiv ntau npaum li cas, qhov zoo me me, qhov viscosity siab, thiab qhov ceev ntawm kev khaws dej siab. Qhov ntxiv ntau npaum li cas muaj feem cuam tshuam loj rau qhov ceev ntawm kev khaws dej, thiab qhov viscosity tsis muaj dab tsi ua rau qhov ceev ntawm kev khaws dej. Qhov nrawm ntawm kev yaj feem ntau nyob ntawm qib kev hloov pauv ntawm qhov chaw thiab qhov zoo ntawm cov khoom me me ntawm cov cellulose. Ntawm cov cellulose ethers saum toj no, methylcellulose thiab hydroxypropylmethylcellulose muaj qhov ceev ntawm kev khaws dej siab dua.
(2) Methyl cellulose tuaj yeem yaj rau hauv dej txias, tab sis yuav ntsib teeb meem hauv kev yaj hauv dej kub. Nws cov kua dej ruaj khov heev hauv pH = 3-12, thiab muaj kev sib raug zoo nrog cov hmoov txhuv nplej siab thiab ntau yam surfactants. Thaum qhov kub ncav cuag gel Thaum qhov kub ntawm gelation nce, gelation yuav tshwm sim.
(3) Kev hloov pauv kub yuav cuam tshuam loj heev rau qhov ceev ntawm methylcellulose. Feem ntau, qhov kub siab dua, qhov ceev ntawm kev khaws dej yuav phem dua. Yog tias qhov kub ntawm cov mortar tshaj 40 degrees, qhov kev khaws dej ntawm methylcellulose yuav puas tsuaj loj heev, cuam tshuam loj heev rau kev tsim cov mortar.
(4) Methylcellulose muaj feem cuam tshuam loj heev rau kev tsim kho thiab kev nplaum ntawm cov mortar. Qhov nplaum ntawm no yog hais txog qhov nplaum uas tus neeg ua haujlwm siv thiab cov khoom siv phab ntsa, uas yog, qhov tsis kam ntawm cov mortar. Qhov nplaum yog siab, qhov tsis kam ntawm cov mortar yog siab, thiab lub zog uas cov neeg ua haujlwm xav tau thaum siv kuj siab, yog li kev ua haujlwm ntawm cov mortar tsis zoo.
Lub sijhawm tshaj tawm: Lub Ib Hlis-31-2024