Qhov feem pua ntawm cov khoom siv yas ntxiv hauv cov khoom yas yog tsawg dua 8%, tab sis nws lub luag haujlwm hauv kev txhim kho cov txheej txheem thiab kev ua haujlwm ntawm cov khoom yas yog unquestionable. kev ua haujlwm thiab lub luag haujlwm. Ua ke nrog cov resin thiab cov tshuab ua haujlwm, lawv tsim peb lub ntsiab lus ntawm kev lag luam plastics hauv ntiaj teb niaj hnub no.
Muaj ntau ntau hom yas additives nrog ntau lub zog. Raws li kev ua haujlwm sib txawv thiab lub luag haujlwm, nws feem ntau suav nrog peb lub tshuab: kev pabcuam ruaj khov, kev pabcuam kev ua haujlwm thiab kev pabcuam kev ua haujlwm. Nrog rau txoj kev loj hlob ntawm plastics kev lag luam, kev nce ntawm cov yas resin qauv, kev nce qib ntawm molding ua technology thiab kev txhim kho cov khoom ua tau zoo nyob rau hauv daim ntawv thov teb tau zoo heev txhawb cov expansion ntawm yas additives pawg thiab nce ntau lawm thiab noj.
Cov khoom siv yas tuaj yeem muab faib ua ob lub tshuab loj:" synthesis auxiliaries" thiab" kev pab cuam". Synthesis auxiliaries xa mus rau ntau yam auxiliary chemicals uas koom nrog hauv cov txheej txheem ntawm kev npaj cov polymer resins los ntawm monomers, xws li polymerization inhibitors, pib, molecular hnyav regulators, terminators, emulsifiers, dispersants thiab anti-sticking agents. Lawv tau tsim los txhim kho cov txheej txheem polymerization, kho qhov loj thiab kev faib tawm ntawm qhov hnyav molecular, thiab muaj kev cuam tshuam zoo rau cov txheej txheem polymerization, thiab feem ntau tsis coj mus rau hauv cov khoom siv polymer thiab nws cov khoom yas. Tsis suav nrog hauv kev txheeb cais ntawm cov khoom siv yas. Lub tswv yim ntawm niaj hnub yas additives yog yeej framed nyob rau hauv cov nqe lus ntawm kev ua additives.
Raws li peb txhua tus paub, cov txheej txheem molding ntawm cov khoom yas yog ua tiav los ntawm cov txheej txheem ntawm kev sib txuam, plasticizing, thiab molding. Hauv cov txheej txheem no, resins, additives, cov khoom siv ua haujlwm (nrog rau cov pwm) yog qhov tseem ceeb hauv cov ntsiab lus tseem ceeb. Nyob rau hauv sib piv, tus nqi ntawm additives siv nyob rau hauv yas formulations yog negligible, tab sis lawv ua si ib tug tseem ceeb luag hauj lwm nyob rau hauv kev txhim kho cov txheej txheem thiab daim ntawv thov ntawm cov khoom. Nws tuaj yeem hais tias tom qab cov qauv ntawm cov khoom siv polymer tau txiav txim siab, kev xaiv thiab kev siv cov khoom siv ntxiv yog tus yuam sij rau kev ua tiav lossis tsis ua tiav ntawm cov khoom.