PVC Qib HPMC
PVCQib HPMC Hydroxypropyl Methylcellulose yog ib hom polymer uas muaj kev siv ntau tshaj plaws thiab kev ua tau zoo tshaj plaws ntawm txhua hom cellulose. Nws yog siv dav hauv ntau yam kev lag luam thiab lub neej txhua hnub. Nws yeej ib txwm hu ua "kev lag luam MSG".
Hydroxypropyl methyl cellulose (HPMC) yog ib qho ntawm cov khoom siv dispersant tseem ceeb hauv kev lag luam polyvinyl chloride (PVC). Thaum lub sijhawm polymerization ntawm vinyl chloride, nws tuaj yeem txo qhov kev sib txhuam ntawm VCM thiab dej thiab pab vinyl chloride monomers (VCM) kom sib npaug thiab ruaj khov hauv cov dej nruab nrab; tiv thaiv VCM cov tee dej los ntawm kev sib koom ua ke thaum ntxov ntawm cov txheej txheem polymerization; tiv thaiv cov khoom polymer los ntawm kev sib koom ua ke thaum kawg ntawm cov txheej txheem polymerization. Hauv lub kaw lus polymerization ncua, nws ua lub luag haujlwm ntawm kev sib kis thiab kev tiv thaiv. Lub luag haujlwm ob npaug ntawm kev ruaj khov.
Hauv VCM ncua polymerization, cov dej polymerization thaum ntxov thiab cov khoom nruab nrab thiab lig polymer yooj yim sib sau ua ke thaum pib, yog li tus neeg sawv cev tiv thaiv kev sib kis yuav tsum tau ntxiv rau VCM ncua polymerization system. Hauv cov xwm txheej ntawm txoj kev sib tov ruaj khov, hom, xwm txheej thiab qhov ntau ntawm cov dispersant tau dhau los ua cov yam ntxwv tseem ceeb los tswj cov yam ntxwv ntawm cov khoom PVC.
Cov Lus Qhia Txog Tshuaj
| PVC qib HPMC Cov Lus Qhia Tshwj Xeeb | HPMC60E ( 2910) | HPMC65F( 2906) | HPMC75K( 2208) |
| Kub ntawm cov kua nplaum (℃) | 58-64 | 62-68 | 70-90 |
| Methoxy (WT%) | 28.0-30.0 | 27.0-30.0 | 19.0-24.0 |
| Hydroxypropoxy (WT%) | 7.0-12.0 | 4.0-7.5 | 4.0-12.0 |
| Viscosity (cps, 2% Tshuaj) | 3, 5, 6, 15, 50,100, 400,4000, 10000, 40000, 60000,100000,150000,200000 | ||
Qib Khoom:
| PVC qib HPMC | Viscosity (cps) | Lus Cim |
| HPMC60E50(E50) | 40-60 | HPMC |
| HPMC65F50 (F50) | 40-60 | HPMC |
| HPMC75K100 (K100) | 80-120 | HPMC |
Cov yam ntxwv
(1)Qhov kub ntawm polymerization: Qhov kub ntawm polymerization feem ntau txiav txim siab qhov nruab nrab ntawm qhov hnyav molecular ntawm PVC, thiab cov dispersant yeej tsis muaj feem cuam tshuam rau qhov hnyav molecular. Qhov kub ntawm gel ntawm cov dispersant siab dua qhov kub ntawm polymerization kom ntseeg tau tias cov polymer dispersant tawg.
(2) Cov yam ntxwv ntawm cov khoom me me: lub cheeb ntawm cov khoom me me, morphology, porosity, thiab kev faib tawm ntawm cov khoom me me yog cov cim qhia tseem ceeb ntawm SPVC zoo, uas muaj feem cuam tshuam nrog kev tsim qauv agitator / reactor, polymerization dej-rau-roj piv, dispersion system thiab qhov hloov pauv kawg ntawm VCM, uas lub dispersion system yog qhov tseem ceeb tshwj xeeb.
(3) Kev Sib Tov: Ib yam li lub kaw lus sib kis, nws muaj kev cuam tshuam loj heev rau qhov zoo ntawm SPVC. Vim yog qhov loj ntawm cov dej ntws VCM hauv dej, qhov ceev sib tov nce thiab qhov loj ntawm cov dej ntws txo qis; thaum qhov ceev sib tov siab dhau, cov dej ntws yuav sib sau ua ke thiab cuam tshuam rau cov khoom kawg.
(4) Lub kaw lus tiv thaiv kev tawg: Lub kaw lus tiv thaiv tiv thaiv cov dej ntws VCM thaum ntxov ntawm qhov kev tshuaj tiv thaiv kom tsis txhob sib koom ua ke; cov PVC tsim tawm precipitates hauv cov dej ntws VCM, thiab lub kaw lus tawg tiv thaiv kev sib sau ua ke ntawm cov khoom tswj hwm, kom tau txais cov khoom kawg SPVC. Lub kaw lus tawg yog muab faib ua lub kaw lus tawg tseem ceeb thiab lub kaw lus tawg pab. Lub dispersant tseem ceeb muaj qib siab alcohollysis PVA, HPMC, thiab lwm yam, uas cuam tshuam rau kev ua haujlwm tag nrho ntawm SPVC; lub kaw lus tawg pab yog siv los txhim kho qee yam ntxwv ntawm cov khoom SPVC.
(5) Lub kaw lus dispersion tseem ceeb: Lawv yog cov dej-soluble thiab ruaj khov cov VCM droplets los ntawm kev txo qhov kev sib txhuam ntawm VCM thiab dej. Tam sim no hauv kev lag luam SPVC, cov dispersants tseem ceeb yog PVA thiab HPMC. PVC qib HPMC muaj qhov zoo ntawm cov tshuaj tsawg, thermal stability thiab kev ua tau zoo plasticizing ntawm SPVC. Txawm hais tias nws kim heev, nws tseem siv dav. PVC qib HPMC yog tus neeg sawv cev tiv thaiv kev sib txhuam tseem ceeb hauv PVC synthesis..
Ntim Khoom
TTus qauv ntim khoom yog 25kg / nruas
20'FCL: 9 tuj nrog palletized; 10 tuj tsis muaj palletized.
40'FCL:18tuj nrog palletized;20ton unpalletized.
Kev Khaws Cia:
Khaws cia rau qhov chaw txias, qhuav hauv qab 30 ° C thiab tiv thaiv kom tsis txhob muaj av noo thiab nias, vim tias cov khoom yog thermoplastic, lub sijhawm khaws cia yuav tsum tsis pub tshaj 36 lub hlis.
Cov lus qhia txog kev nyab xeeb:
Cov ntaub ntawv saum toj no yog raws li peb txoj kev paub, tab sis tsis txhob zam cov neeg siv khoom ua tib zoo xyuas txhua yam tam sim ntawd thaum tau txais. Txhawm rau kom tsis txhob muaj cov qauv sib txawv thiab cov khoom siv raw sib txawv, thov ua qhov kev sim ntau dua ua ntej siv nws.
Lub sijhawm tshaj tawm: Lub Ib Hlis-01-2024