PolyoxSylene qauv thiab kev ua tau zoo
PolyoxYMethylene (Pom) Cov Khoom Taw Qhia Pom Zoo Tshaj Plaws Cov Kev Ua Haujlwm feem ntau vim nws lub siab kub thiab siab crystallinity. Cov khoom no txhawb nws qhov kev nyuaj, nruj, seem ruaj khov, nkees tsis kam, thiab tshuaj lom neeg kuj. Lub siab ntom ntom thiab crystallinity txwv txoj kev txav ntawm cov hlua khi ntawm cov coulation ntawm cov pob zeb molecular, uas imperarts cov khoom siv hluav taws xob thiab dielectric cov yam ntxwv rau pom.
Txawm li cas los xij, pom lub davhlau ya nyob twg cov pab pawg uas muaj kev pom zoo ib nrab, uas cuam tshuam rau nws cov khoom ruaj khov. Ntawm qhov kub nyob ib ncig ntawm 100 degree, cov pab pawg ua haujlwm tiav tuaj yeem maj mam depolymerize, ua rau kom tsawg heev. Thaum rhuab mus kwv yees li 170 degree, pom tuaj yeem yauv tsis yooj yim oxidation raws cov molecular, tso formaldehyde. Qhov formaldehyde yog tom qab ntawd oxidized rau formic acid ntawm kev kub thiab nyob rau hauv muaj oxygen. Formic acid ua rau pom kev tshwm sim ntawm pom kev thaum tshav kub kub, tshuaj tiv thaiv kab mob, thiab formaldehyde nqus lub sijhawm ua kev ua haujlwm ntawm homoFormalyde.
Co-polymer formaldehyde, uas muaj qee qhov nyiaj ntawm CC Bins, muaj kev txhim kho thermal stability piv rau cov khoom siv thermal nrog rau homoformalhayde. Lub CC Bonds pab txo qis oxidative offradation, txhim kho cov polymer cov khoom ruaj khov. Txawm li cas los xij, ob qho tib si homopolymer thiab copolymer formaldehyde pom kev txwv hauv thermal thiab oxidative stabent, uas yuav tsum tau ua tib zoo tswj lub sijhawm ua thiab daim ntawv thov.