Choyamwa UV
Pansi pa kuwala kwa dzuwa ndi kuwala, mapulasitiki ndi zinthu zina za polima zimadutsa mu oxidation yokha pansi pa mphamvu ya ultraviolet, zomwe zimapangitsa kuti ma polima awonongeke komanso kuti maonekedwe awo awonongeke komanso mawonekedwe awo awonongeke. Pambuyo poti ultraviolet absorber yawonjezeredwa, ultraviolet rays yamphamvu kwambiri imatha kuyamwa mosankha ndikusanduka mphamvu yopanda vuto kuti itulutsidwe kapena kugwiritsidwa ntchito. Chifukwa cha mitundu yosiyanasiyana ya ma polima, ma ultraviolet wavelength omwe amawawononga nawonso ndi osiyana. Ma ultraviolet absorber osiyanasiyana amatha kuyamwa ultraviolet rays ndi ma wavelength osiyanasiyana. Pogwiritsa ntchito, ma ultraviolet absorber ayenera kusankhidwa malinga ndi mitundu ya ma polima.
Ma absorber a UV akhoza kugawidwa m'magulu otsatirawa malinga ndi kapangidwe kake ka mankhwala: salicylates, benzones, benzotriazoles, substituted acrylonitrile, triazine ndi ena.
Mndandanda wazinthu:
| Dzina la Chinthu | CAS NO. | Kugwiritsa ntchito |
| BP-1 (UV-0) | 6197-30-4 | Polyolefin, PVC, PS |
| BP-3 (UV-9) | 131-57-7 | Pulasitiki, Chophimba |
| BP-12 (UV-531) | 1842-05-6 | Polyolefin, Polyester, PVC, PS, PU, Resin, Chophimba |
| BP-2 | 131-55-5 | Polyester/Utoto/Nsalu |
| BP-4 (UV-284) | 4065-45-6 | Kuphimba/Kupaka mbale ya Litho |
| BP-5 | 6628-37-1 | Nsalu |
| BP-6 | 131-54-4 | Utoto/PS/Polyester |
| BP-9 | 76656-36-5 | Utoto wopangidwa ndi madzi |
| UV-234 | 70821-86-7 | Filimu, Mapepala, Ulusi, Zophimba |
| UV-120 | 4221-80-1 | Nsalu, zomatira |
| UV-320 | 3846-71-7 | PE, PVC, ABS, EP |
| UV-326 | 3896-11-5 | PO, PVC, ABS, PU, PA, Kuphimba |
| UV-327 | 3861-99-1 | PE, PP, PVC, PMMA, POM, PU, ASB, Zophimba, Inki |
| UV-328 | 25973-55-1 | Chophimba, Filimu, Polyolefin, PVC, PU |
| UV-329(UV-5411) | 3147-75-9 | ABS, PVC, PET, PS |
| UV-360 | 103597-45-1 | Polyolefin，PS, PC，Poliyesitala, Zomatira, Elastomers |
| UV-P | 2440-22-4 | ABS, PVC, PS, PUR, Polyester |
| UV-571 | 125304-04-3/23328-53-2/104487-30-1 | PUR, Chophimba, Thovu, PVC, PVB, EVA, PE, PA |
| UV-1084 | 14516-71-3 | Filimu ya PE, tepi, filimu ya PP, tepi |
| UV-1164 | 2725-22-6 | POM, PC, PS, PE, PET, ABS utomoni, PMMA, nayiloni |
| UV-1577 | 147315-50-2 | PVC, utomoni wa polyester, polycarbonate, Styrene |
| UV-2908 | 67845-93-6 | Galasi lachilengedwe la polyester |
| UV-3030 | 178671-58-4 | PA, PET ndi pepala la pulasitiki la PC |
| UV-3039 | 6197-30-4 | Ma emulsion a silicone, inki zamadzimadzi, Acrylic, vinyl ndi zomatira zina, Acrylic resins, Urea-formaldehyde resins, Alkyd resins, Expoxy resins, Cellulose nitrate, PUR systems, Mafuta opaka utoto, Polymer dispersions |
| UV-3638 | 18600-59-4 | Nayiloni, Polycarbonate, PET, PBT ndi PPO. |
| UV-4050H | 124172-53-8 | Polyolefin, ABS, Nayiloni |
| UV-5050H | 152261-33-1 | Polyolefin, PVC, PA, TPU, PET, ABS |
| UV-1 | 57834-33-0 | Thovu la micro-cell, thovu la khungu losasinthika, thovu lolimba lachikhalidwe, thovu lolimba pang'ono, lofewa, zokutira nsalu, zomatira zina, zomatira ndi ma elastomer |
| UV-2 | 65816-20-8 | PU, PP, ABS, PE ndi HDPE ndi LDPE. |
