Polypropylene, feem ntau hu ua PP, yog cov thermoplastic polymer uas tau siv dav hauv ntau daim ntawv thov vim nws cov khoom zoo sib xws xws li tawv tawv, zoo tshuaj tiv thaiv, hnav, thiab tus nqi qis. Nws yog ib qho ntawm cov khoom siv nyiaj txiag thiab ntau yam khoom siv hauv ntiaj teb niaj hnub no.
Ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm polypropylene yog nws qhov hnyav atomic. Yuav kom nkag siab txog qhov hnyav atomic, peb yuav tsum xub nkag siab tias lub atom yog dab tsi. Ib qho atom yog lub hauv paus ntawm cov teeb meem, suav nrog lub nucleus uas muaj cov protons thiab neutrons thiab huab cua ntawm electrons orbiting ncig lub nucleus. Txhua lub ntsiab lus muaj tus lej tshwj xeeb ntawm protons hauv lub nucleus, uas txiav txim siab lub ntsiab ntawm tus lej atomic.
Qhov hnyav ntawm atomic ntawm ib lub caij yog qhov nruab nrab ntawm cov huab hwm coj ntawm tag nrho cov isotopes tshwm sim ntawm lub caij, hnyav los ntawm lawv cov txheeb ze abundance. Hauv cov ntsiab lus yooj yim, qhov hnyav atomic yog qhov nruab nrab ntawm cov atoms ntawm lub caij, suav nrog cov isotopes sib txawv ntawm lub caij.
Qhov hnyav atomic ntawm polypropylene yog nyob ib ncig ntawm 42 grams ib mole (g / mol). Qhov hnyav atomic no yog txiav txim siab los ntawm qhov hnyav molecular ntawm lub polymer, uas yog qhov sib npaug ntawm qhov hnyav ntawm atomic ntawm tag nrho cov atoms nyob rau hauv lub polymer molecule.
Polypropylene yog ib lub polymer uas yog tsim los ntawm ntau propylene monomers, uas tau koom ua ke los ntawm cov txheej txheem polymerization. Cov propylene monomers yog tsim los ntawm carbon thiab hydrogen atoms, nrog rau txhua carbon atom hnyav ib ncig ntawm 12 atomic mass units (amu) thiab txhua hydrogen atom hnyav ib ncig ntawm 1 AMU. Yog li ntawd, qhov hnyav molecular ntawm polypropylene yog xam los ntawm kev suav cov atomic luj ntawm tag nrho cov carbon thiab hydrogen atoms nyob rau hauv lub polymer lub molecule.
Qhov hnyav molecular ntawm polypropylene tuaj yeem tswj tau thaum lub sijhawm txheej txheem polymerization kom ua tiav qib sib txawv ntawm PP resins, xws li los ntawm qhov hnyav molecular resins mus rau siab molecular hnyav resins. Tsawg molecular hnyav resins hloov tau yooj yim dua thiab muaj cov ntsiab lus melting qis, thaum siab molecular hnyav resins muaj zog thiab muaj cov ntsiab lus melting ntau dua. Yog li ntawd, atomic hnyav ntawm polypropylene yog ib qho tseem ceeb uas txiav txim siab cov khoom ntawm cov polymer, xws li nws lub zog, tawv, thiab melting point.
Hauv kev xaus, polypropylene yog ntau yam thiab kev lag luam polymer uas tau siv dav hauv ntau daim ntawv thov, xws li cov khoom ntim rau cov khoom siv tsheb. Nws qhov hnyav atomic plays lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom ntawm cov polymer, xws li nws qhov hnyav molecular, lub zog, thiab melting point. Nkag siab txog qhov hnyav atomic ntawm polypropylene yog qhov tseem ceeb rau kev tsim thiab tsim cov khoom siv polypropylene uas ua tau raws li qhov xav tau kev ua haujlwm.
Cim npe nrov: Tuam Tshoj atomic hnyav ntawm polypropylene, Tuam Tshoj atomic hnyav ntawm polypropylene manufacturers, lwm tus neeg, Hoobkas
