Cov xim ntuj daj yog yellowish translucent, ci iab. Transparency yog zoo dua li polyethylene, mob heev dua li cov nplais, nrog ntau npaum li cas, muab faib rau cov mos nyuj, polyvinyl chloride nyuaj, muag muag thiab tawv, zoo li nplaum, tawv hardness ntau dua low-density polyethylene. Thiab qis dua lub polypropylene, nyob rau hauv lub inflection yuav tshwm whitening phenomenon. Nws muaj ntau yam ntxwv, piv txwv: ruaj khov; yooj yim kom acid, alkali corrosion; ntau tolerant kom sov.
Polyvinyl chloride muaj hluav taws kub nyhiab (hluav taws kub nyhiab ntawm 40 los yog ntau dua), tshuaj tiv thaiv tsis haum (resistant rau hydrochloric acid, 90% concentration ntawm sulfuric acid, concentration ntawm 60% nitric acid thiab 20% concentration of sodium hydroxide), txhua yam muaj zog thiab qhov zoo ntawm qhov hluav taws xob zoo hluav taws xob.
PVC tau ruaj ntseg rau teeb thiab cua sov. Lub nplais nplawm nplawm yog 80 ° C, thiab qhov lwj tau pib ntawm 130 ° C. Yog tias tsis muaj cua sov ua kom sov, PVC 100 ° C pib zom zaws, ntau dua 130 ° C kom nrawm dua. Thaum tshav kub kub ntawm qhov tso cov roj hydrogen chloride roj, (cov roj hydrogen chloride yog cov roj toxic) kom muaj suab nrov, ntawm dawb → daj daj • liab → xim av dub. Sunshine nyob rau hauv lub ultraviolet thiab oxygen yuav ua rau lub duab-oxidation ntawm PVC, thiaj li hais tias cov yooj ntawm PVC poob, thiab thaum kawg brittle. Ntawm no tsis yog yooj yim to taub yog vim li cas ib co PVC yas ntev ntev yuav tig daj, vim li cas.
Nrog lub cev tsis muaj zog thiab tshuaj muaj zog, cov dej tsis zoo, dej cawv, roj av, roj, dej ua paug dej tsis tau; nyob rau hauv chav tsev sov tuaj yeem tiv taus cov concentration ntawm hydrochloric acid, 90% ntawm sulfuric acid, 50-60% nitric acid thiab 20% Caustic soda kua, uas muaj ib co tsis kam rau tshuaj corrosion; Ntsev yog qhov ruaj khov heev, tab sis tuaj yeem yuav yaj nyob rau hauv ether, ketone, chlorinated aliphatic hydrocarbons thiab cov ntxhuav hydrocarbons thiab lwm cov organic solvents.
Cov tshuaj polyvinyl chloride tsuas yog cov qauv amorphous, tab sis tseem muaj cov txheej txheem ntawm cov pob txha (li 5%), yog li ntawd, PVC tsis muaj lub teeb taw qhia txog qhov teeb meem, 80 ℃ los yog li pib mob, kub kub (1.82MPa load) 70-71 ° C, pib ntws ntawm 150 ° C nyob rau hauv siab thiab pib maj mam tso tawm hydrogen chloride, ua rau lub discoloration ntawm polyvinyl chloride (liab, xim av, thiab txawm dub).
Qhov nruab nrab molecular nyhav ntawm cov PVC muaj nyob rau hauv thaj tsam ntawm 4.8 mus rau 48,000, thiab tus xov tooj coj los sib haum xeeb rau qhov loj ntawm 2-195 lab. Thiab feem ntau ntawm cov cob kaub fab yog qhov sib piv ntawm molecular ntawm 10-20 lab, pes tsawg molecular txheeb ze nyob rau hauv 4.55-6.4 lab. Polygon polyvinyl chloride (tsis muaj yas rau khoom) muaj kev sib zog ua tau zoo, huab cua thiab qhov hluav taws xob ua haujlwm, siv tau ua ib yam khoom ua, siv cov kav dej, cov hlau thiab cov khoom siv tshuaj. Roj polyvinyl chloride yuav tsum tau siv nrog cov khoom siv reinforcing.