Vim li cas txoj kev tsheb cim daj brow? Lub luag haujlwm ntawm UV & Resin Weathering

Txoj kev pib nyhoo yog feem ntau tshwm sim los ntawm UV degradation thiab resin weathering, kev pom kev zoo nkauj thiab kev nyab xeeb. Ntawm no yog li cas lawv cuam tshuam:

1. UV kev puas tsuaj
Sunlight's Ultraviolet (UV) Rays tsoo cov neeg siv khoom hauv cov khoom cim. Rau cov cim ntsuas kub, UV kis oxidizes resins (piv txwv li, C5 roj av resin), sib sau daj chromophores. Cov cim dawb nrog cov titanium tsawg (ti₂) cov ntsiab lus tsis zoo sai dua, raws li kev tiv thaiv UV tab sis degrades nyob rau lub sijhawm.

2. Rhais Weather
Thermopoplastic Rasins soften thaum kub (180-230 ° C), ua kom nrawm oxidation. Overheating thaum lub sijhawm thov lossis lub hnub ci ci nthuav tawm resin kev ua tsis ncaj, ua rau yellowing.
Cov txheej txheem qub qub (siv hauv qee cov tshuaj pleev xim) yog qhov sib deev vim tias benzene ntiv nplhaib, tsis zoo li ntau dua cov kev sib tw ua ruaj khov TPU.
Cov kev daws teeb meem
Ntxiv UV nqus (E.G., Benzotriazole cov tebchaw) los ua resins) los ua resins, thaiv 270-380nn UV Rays.
Siv cov resins high-purity thiab txaus tioul (≥18%) kom txhim kho UV tsis kam.
Tswj daim ntawv thov kub (180-200 ° C) los tiv thaiv cov kev txwv thermal.
Los ntawm kev hais txog UV thiab muab cov cim ruaj khov, kev tsheb khiav tuaj yeem khaws tau xim thiab ua tau ntev.