Lub raj mis dej qib PET Resin (PET)
Khoom Taw Qhia
Dej lub raj mis qib polyester chips yog tsim los ua cov ntim ntim rau cov dej ntshiab, dej ntxhia dej, dej distilled, dej haus, tsw thiab khoom qab zib ntim, pleev lub raj mis thiab cov ntaub ntawv PET thiab lwm yam.
Cov khoom lag luam muaj cov ntsiab lus tsis tshua muaj hlau hnyav, cov ntsiab lus tsawg ntawm acetaldehyde, xim zoo, ruaj khov viscosity.Nrog rau daim ntawv qhia txheej txheem tshwj xeeb thiab cov thev naus laus zis ntau lawm, cov khoom lag luam muaj cov yam ntxwv ua tau zoo, kev ua haujlwm qis, dav dav hauv kev ua, zoo tshaj plaws pob tshab thiab siab hauv cov khoom tiav.Hauv kev ua lub raj mis, cov khoom lag luam muaj me me degradation thiab cov ntsiab lus ntawm acetaldehyde tsawg.Thaum ua kom muaj kev nyab xeeb thiab kev nyiam huv, nws tuaj yeem ua kom muaj txiaj ntsig zoo ntawm cov dej huv huv, dej ntxhia thiab dej distilled.
Technical Index
| Ttem | Chav tsev | Index | Kev sim | |
| Intrinsic Viscosity (Kev lag luam txawv teb chaws) | dL/g | 0.800 ± 0.02 | wb 17931 | |
| Cov ntsiab lus ntawm acetaldehyde | ppm ua | <1 | Gas chromatography | |
| Xim tus nqi | L | — | > 82 | HunterLab |
| b | — | <1 | HunterLab | |
| Carboxyl kawg pawg | mmol/kg | <30 | Photometric titration | |
| Melting point | °C | 243 ± 2 | DSC | |
| Cov ntsiab lus dej | wt% | <0.2 | Txoj kev hnyav | |
| Hmoov plua plav | PPm | <100 | Txoj kev hnyav | |
| Wt.ntawm 100 chips | g | 1.55 ± 0.10 | Txoj kev hnyav | |
Hom kev ua haujlwm
Kev ziab yog tsim nyog ua ntej cov txheej txheem yaj los tiv thaiv cov resin los ntawm hydrolysis.Tej yam kev mob ziab yog huab cua kub ntawm 160-180 ° C, 4-6 teev nyob rau lub sij hawm, dew point kub hauv qab -40 * C.
Qhov ntsuas kub zoo li ntawm 275-293 ° C.
