Kana machira akaiswa kunze, zvinhu zvakaita sehunyoro, kupisa uye UV mwaranzi zvinogona kuita kuti zvidzikire.Kazhinji kutaura, izvo zvinonyanya kukurumidza zvinoriumba mujasi mafirimu ekugadzira resins uye hupfu.Ultraviolet mwaranzi uye mvura zvinoita kuti zvinhu izvi zviparare makemikari, uye izvi zvinokonzeresa zvinowanzoitika kana tembiricha yakwira.Kushatiswa kwezvipfeko kunokonzerwa nemirairo ye ultraviolet inowanzonzi photooxidation.Mhedzisiro yacho inokonzereswa nemwaranzi ye ultraviolet.Oxygen mumhepo inobatanidzwa mukuparara kwemakemikari.Zvinhu zvakadai zvinotora photon zvinonzi chromophores uye zvinogona kuva mapoka ekupedzisira e pigment particles, musana kana polymer binders, tsvina, zvakasara zvinonyungudutsa, kana additives.Kana mafotoni atorwa, chromophore inoburitsa simba.Iyi maitiro anowanzo kuwanikwa nekutyora iyo covalent bond kuumba maviri emahara radicals.Aya ma radicals anowanzo shanda zvakanyanya kuokisijeni uye anosanganiswa neokisijeni kuumba oxygen-centered free radicals.Kana yangoumbwa, ma radicals aya anogona kutyora zvisungo zvemamwe makemikari emakemikari kuburikidza nematanho akasiyana emakemikari, achigadzira ketani yekuita inotungamira mukuparara kwepolymer.Zvichienderana nepolymer, kuwedzera kana kuderera kwe-cross-linking density, kana nhamba huru kana duku yemamorekuru, inogona kuonekwa.Iyo yekutanga inogona kukonzera kuputira kuputika;Iyo yekupedzisira inogona kutungamira mukuputira viscidity, solvent kuramba kana kukwenya kuramba.Uye pendi gloss icharasika, uye ruvara ruchachinja.
Mukuwedzera kune photooxidation, iyo firimu inogadzira resin mumucheka inogona kuderedzwa ne hydrolysis, kunyanya kana kutonhora kwejasi kunowedzera pasi pezuva rakakwirira.Pasi pemamiriro ezvinhu aya, mamorekuru emvura akanyudzwa mujasi anogona kurwisa zvisungo zvakabatana muresin uye kucheka cheni dzepolymer, zvichikonzera huremu hwakaderera.Polyester uye alkyd resin anonyanya kubatwa neizvi kupfuura polyurethanes uye epoxies.
| PRODUCT | CAS NUMBER | EQUIVALENT | DESCRIPTION |
| UV1 | 57834-33-0 | UV1 inoshanda zvakanyanya anti-uv yekuwedzera, inoshandiswa zvakanyanya mu polyurethane, adhesive, furo uye zvimwe zvinhu. | |
| UV3303 | 586400-06-8 | UV3 inokurudzirwa muPU (TPU, RIM) uye engineering mapurasitiki (PET, PC, PC, ABS, PA, PBT) | |
| UV3331 | 147783-69-5 | SANDUVOR PR 31 | UV 3331 inovharirwa amine light stabilizer (HALS) ine UV absorber mashandiro.Ndizvo inoratidzwa nehunyanzvi hwayo uye kugona kwayo kuiswa mubinder kana iyo polymer matrix panguva yekuratidzwa kweUV. UV3331 inogona kushandiswa mu polyolefine, polystyrene plastiki, PVC, PBT uye zvimwe zvinhu. |
| UV3325 | 7443-25-6
| SANDUVOR PR 25 | UV 3325 ndeye UV-B inonyudza yePVC, polyesters, PC, polyamides, styrene plastiki, EVA copolymers, uye cellulosics.
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| LS123 | 129757-67-1 | TINUVIN 123 | LS123 inoshandiswa mumachira emotokari, machira emaindasitiri, machira ekushongedza, machira ehuni, kunyanya kune yakakwira yakasimba, asidhi inorapa mota uye pendi yemaindasitiri. |
| LS292 | 41556-26-7 82919-37-7 | TINUVIN 292 | LS292 inogona kunyatso kudzivirira kuputika, kurasikirwa kwechiedza uye chimwe chirwere chelacquer, inogona kuvandudza zvakanyanya hupenyu hwebasa rejasi, uye chigadzirwa pamhepo tembiricha hachizovheneke. |
| LS765 | 41556-26-7 82919-37-7 | TINUVIN 765 | LS765 inoshandiswa mumachira, kunyanya pendi dzemotokari kudzivirira kuchembera. LS765 inonyatso shanda mvura stabilizer kune akasiyana mapolymers uye mashandisirwo, anosanganisira polyurethanes, sealants, adhesives, elastomers, unsaturated polyesters, acrylics, vinyl polymers (PVB, PVC), styrene homopolymers uye copolymers, polyene vertical, liquid color concentrates. mamwe organic substrates. |