Khoom Txheej Txheem
Kev txhais lus
HydroxyPropyyl methylulose (HPMC) yog cov khoom siv hluavtaws ib nrab, ionic cellulose ether, uas tau los ntawm kev ua pob zeb thiab lub ntsej muag ntawm cov cellulose ntawm ntuj cellulose.
Molecular qauv qauv
Tshuaj mis: C56H108o30
Molecular hnyav: txog 10, 000-1}, 500, 000 da
Cov Qauv Txheej Txheem:
HydroxyPropEXY hloov chaw kawm qib siab (MS): {0}}}}. 0
Methoxy hloov chaw kawm qib siab (DS): 1. {0-2. 0
Cov txheej txheem ntau lawm
Peb muab ntau yam sib kis
Cov txheej txheem ntau lawm
Ua Khoom Siv Raw: Paj Rwb Hniav → Alkalization (18% NAOH)
ETherification cov tshuaj tiv thaiv: Ch3Cl + prantasene oxide (50-80 degree)
PURIFATION: Cov dej kub ntxuav → kev suav nruab nrab → kom qhuav
Ua tiav cov khoom lag luam: Crushing → Soj ntsuam → Ntim
TSEEM TSAV KEV NTSEEG
Cov tshuaj tiv thaiv kub sib txawv: ± 2 degree
Etheridation tus neeg sawv cev sib piv: ± 0. 5%
Cov khoom tiav fineness: 80 Mesh Pass tus nqi ntau dua los yog sib npaug rau 99%
Chaw thov
Tsev cov ntaub ntawv
Qhuav-mix cug: dej khaws cia ntau dua lossis sib npaug ntawm 98%
Cov nplaum nplaum: qhib lub sijhawm ntau dua lossis sib npaug rau 30 feeb
Kev Ntsuas Yus Tus Kheej: Muaj txiaj ntsig ntau dua los yog sib npaug rau 140 hli
Kws noj khoom haus
Ntsiav Tshuaj Ntsiav Tshuaj: Zaj duab xis ua lub sijhawm tsawg dua lossis sib npaug rau 5min
Cov Khoom Noj Ntxiv: E464 Daim Ntawv Pov Thawj
Kev Lag Luam Txhua Hnub
Zawv plaub hau: thickening equiciency 0. 5% thiab ntxiv tus nqi txog 5000cps ntxiv
Tshuaj txhuam hniav: lub sijhawm nyob ruaj khov dua lossis sib npaug rau 24 lub hlis
Daim ntawv thov kev daws
Tsev Cov Ntaub Ntawv Teb
Pobzeb Adhesive Formula Cov Lus Pom Zoo:
Ntxiv tus nqi 0. {2-0. 5%
Dej khaws cia tus nqi nce ntxiv los ntawm 40-60%
Qhib lub sijhawm txuas mus rau 30-45 feeb
Kws Txhim Kho Chaw Npaj
Daim ntawv thov ntawm Sustained ntsiav tshuaj:
Noj tshuaj 2-10%
Tso nkhaus yuav raug tswj tsis pub dhau 8-12 teev
Kev sib cais sib txawv tsawg dua lossis sib npaug rau 5%
Cov Khoom Siv Txhua Hnub
Zawv plaub hau thickening daws:
Pom zoo ua qauv E5 / E15
{{0 {0}}. {{3-0. 8% Ntxiv Tus Nqi
Viscosity kev hloov tau ntau 500-5000 cms
Cim npe nrov: High qau cellulose hpmc, Tuam Tshoj muaj cov khoom lag luam HPMC siab HPMC, lwm tus neeg, Hoobkas