Cov yam ntxwv ntawm PVC zaj duab xis tuaj yeem sau los ntawm ntau yam xws li tshuaj lom neeg muaj pes tsawg leeg, daim ntawv lub cev, kev tsim kho ntau yam, thiab kev faib tawm raws li hauv qab no
Chemical thiab Basic Structure
Cov khoom tseem ceeb: Polyvinyl chloride (PVC), tshuaj formula −(CH2−CHCl)n-, yog cov khoom siv polymer amorphous tsim los ntawm dawb radical polymerization ntawm vinyl chloride monomers.
Additives: Txhawm rau txhim kho kev ua tau zoo, cov yas yas (10% ~ 50%), stabilizers (1% ~ 10%), fillers (1% ~ 30%), colorants (1% ~ 10%), thiab lwm yam additives feem ntau yog ntxiv.
Microstructure: PVC yog linear polymer nrog ib tug me me ntawm crystalline cheeb tsam, nrog molecular chains teem nyob rau hauv ib tug zigzag qauv, thiab carbon atoms yog tag nrho cov sp³ hybridized.
Physical thiab Macroscopic Structure
Thickness ntau yam: Feem ntau 0.08 ~ 0.2 hli; Cov ntawv tuab dua 0.25 hli yog hu ua PVC ntawv.
Cov tsos mob: Lub teeb daj thiab ib nrab -pob tshab, glossy; pob tshab yog zoo dua polyethylene thiab polypropylene tab sis phem dua polystyrene.
Nto qauv (nqa cov yeeb yaj kiab zoo nkauj / cov nplaum nplaum ua piv txwv)
Sab saum toj txheej: Xim txheej lossis txheej txheej ua haujlwm (xws li PVDF, PVF rau tus kheej- ntxuav lossis UV tsis kam);
Nruab nrab txheej: PVC substrate;
Cov txheej txheem qis: Rov qab-coated nplaum (siab-tus neeg saib xyuas lub zog kom ntseeg tau ruaj khov rau lub substrate).