Nei mamaki emigwagwa ichitendeuka yero? Basa reUV & Resin Weathering

Mugwagwa Makaging Yellowing inonyanya kukonzerwa neUV kusvibiswa uye kuchengetedza mamiriro ekunze, kukanganisa kuoneka uye kuchengeteka. Heano maitiro avanoita:

1. UV kukuvara
Chiedza chezuva chiitiko (UV) RAIY kupwanya zvisungo zvemakemikari mune zvekumaka zvinhu. Zvemakona eTermplastic, UV kuisira oxitidaisies resins (i.e., c5 petroleum resin), kuumba yero chromophores. Machira chena ane akaderera titanium dioxide (Tio₂) zvirimo muripo whiteness nekukurumidza, seTio₂ Shields neUV asi kushambadzira nenguva.

2. Resin mamiriro ekunze
Thermoplastic resins rakapfava pakukwirira kwakakwirira (180-230 ° C), zvichikurumidza oxidation. Kunyanyisa panguva yekushandisa kana kufumurwa kwezuva kwenguva yakareba kunzvera resin kusvibiswa, kutungamira kune yero.
Aromic TPU inogara
Mhinduro
Wedzera UV inobata (i.e., Benzotrizole makomendi) kuti esines, kuvhara 270-380nm uv ray.
Shandisa yakakwirira-yekuchena inogara uye yakakwana tio₂ (≥18%) kuti uwedzere kuH Ristance.
Dzora tembiricha yekushandisa (180-200 ° C) kudzivirira kupisa kusvibiswa.
Nekugadzirisa uv uye resin kugadzikana, marongero emugwagwa anogona kuchengetedza ruvara uye kuita kwenguva yakareba.