Cov Khoom Siv Yas Polymer Rau Cov Tshuaj Pleev Xim
Cov yam ntxwv ntawm cov qauv thiab cov xwm txheej ntawm lub cev lub raj yas kom zoo nkauj Cov ntaub ntawv polymer, nrog rau cov yam sab nraud uas lawv raug thaum siv, xws li cua sov, lub teeb, cua sov oxygen, ozone, dej, kua qaub, cov hauv paus, cov kab mob thiab cov enzymes, tuaj yeem ua rau lawv txoj kev ua haujlwm poob qis lossis poob. Piv txwv li, lawv yuav tig daj, muaj qhov txo qis ntawm qhov hnyav molecular, tsim cov kab nrib pleb ntawm qhov chaw, thiab poob qhov ci ntsa iab. Qhov tseem ceeb dua, lawv cov khoom siv kho tshuab, xws li lub zog cuam tshuam, lub zog tensile thiab elongation, yuav poob qis heev, yog li cuam tshuam rau lawv txoj kev siv ib txwm.
Qhov xwm txheej no tsuas yog hu ua kev laus. Kev laus tuaj yeem tshwm sim ntawm txhua theem ntawm lub raj yas kom zoo nkauj cov ntaub ntawv polymer, los ntawm kev tsim, khaws cia thiab ua tiav mus rau qhov kawg daim ntawv thov, uas tuaj yeem ua rau lub neej ua haujlwm tas sijhawm thiab pov tseg ntau, ua rau muaj kev pov tseg ntau ntawm cov peev txheej thiab kev ua qias tuaj rau ib puag ncig. Kev laus thaum lub sijhawm siv lub raj yas kom zoo nkauj cov ntaub ntawv polymer feem ntau yuav ua rau muaj kev puas tsuaj loj heev thiab kev poob tsis tuaj yeem kho tau.
Yog li ntawd, anti-aging lub raj yas kom zoo nkauj Cov ntaub ntawv polymer tau dhau los ua qhov teeb meem uas kev lag luam polymer yuav tsum tau daws.
Kev laus ntawm lub raj yas kom zoo nkauj Cov ntaub ntawv polymer, tshwj xeeb tshaj yog kev laus ntawm photo-oxidative, feem ntau pib ntawm qhov chaw ntawm cov khoom lossis cov khoom, qhia txog kev hloov pauv, hmoov, tawg, thiab txo qis ntawm qhov ci, thiab tom qab ntawd maj mam nkag mus rau hauv sab hauv. Cov khoom nyias nyias muaj feem yuav ua tsis tiav ua ntej dua li cov tuab, yog li kev nce qhov tuab ntawm cov khoom tuaj yeem ua rau nws lub neej ua haujlwm ntev dua. Rau cov khoom uas muaj feem yuav laus, ib txheej tiv thaiv nrog kev tiv thaiv huab cua zoo tuaj yeem siv rau ntawm qhov chaw lossis ib txheej ntawm cov khoom uas muaj kev tiv thaiv huab cua zoo tuaj yeem sib xyaw rau ntawm txheej sab nraud, yog li muab ib txheej tiv thaiv rau ntawm qhov chaw ntawm cov khoom thiab ncua cov txheej txheem laus.
Ntau cov ntaub ntawv kuj muaj teeb meem laus thaum lub sijhawm tsim lossis npaj, xws li kev cuam tshuam ntawm cua sov thaum lub sijhawm polymerization thiab thermal oxidative laus thaum lub sijhawm ua. Ib yam li ntawd, qhov cuam tshuam ntawm oxygen tuaj yeem txo qis los ntawm kev ntxiv cov khoom siv deoxygenation lossis cov khoom siv nqus tsev thaum lub sijhawm polymerization lossis ua. Txawm li cas los xij, txoj kev no tsuas yog tuaj yeem ua kom ntseeg tau tias cov khoom siv ua haujlwm thaum lub sijhawm tso tawm hauv Hoobkas thiab tsuas yog siv tau los ntawm qhov chaw npaj cov khoom siv, thiab tsis tuaj yeem daws qhov teeb meem laus thaum lub sijhawm rov ua dua thiab siv.
Ntau yam lub raj yas kom zoo nkauj Cov ntaub ntawv polymer muaj cov pab pawg uas yooj yim laus hauv lawv cov qauv molecular. Yog li ntawd, los ntawm kev tsim cov qauv molecular ntawm cov khoom siv thiab hloov cov pab pawg yooj yim laus nrog cov pab pawg tsawg dua, cov txiaj ntsig zoo feem ntau tuaj yeem ua tiav.
Tam sim no, txoj hauv kev zoo thiab txoj hauv kev siv ntau los txhim kho kev tiv thaiv kev laus ntawm lub raj yas kom zoo nkauj Cov ntaub ntawv polymer yog ntxiv cov tshuaj ntxiv tiv thaiv kev laus. Vim lawv tus nqi qis thiab tsis tas yuav hloov cov txheej txheem tsim khoom uas twb muaj lawm, lawv tau siv dav. Qhov zoo ntawm daim ntawv thov yog tias cov tshuaj ntxiv tiv thaiv kev laus tau tawg ua ntej thaum lub sijhawm npaj cov masterbatches, thiab tom qab ntawd rov tawg dua thaum lub sijhawm ua cov khoom tom qab, ua tiav lub hom phiaj ntawm kev sib xyaw ua ke ntawm cov tshuaj ntxiv hauv cov khoom siv polymer matrix. Qhov no tsis yog tsuas yog ua kom muaj kev ruaj khov ntawm cov khoom zoo xwb tab sis kuj zam kev ua qias tuaj ntawm hmoov av thaum lub sijhawm tsim khoom, ua rau kev tsim khoom zoo dua rau ib puag ncig thiab ntsuab.