Sumo yeUV absorber

Chiedza chezuva chine chiedza chakawanda che ultraviolet chinokuvadza zvinhu zvine mavara. Kureba kwaro kwehurefu kunosvika 290 ~ 460nm. Mwaranzi iyi ye ultraviolet inokuvadza inoita kuti mamorekuru emavara aore uye anyangarike kuburikidza nemakemikari anoderedza oxidation. Kushandisa ultraviolet absorbers kunogona kudzivirira kana kuderedza kukuvara kwemwaranzi ye ultraviolet kuzvinhu zvakachengetedzwa.

Chinobvisa UV chinhu chinosimbisa chiedza chinogona kupinza chikamu chezuva cheultraviolet uye manyuko echiedza chefluorescent pasina kuchinja. Mapurasitiki nezvimwe zvinhu zvepolymer zvinogadzira auto-oxidation reactions pasi pezuva uye fluorescence nekuda kwebasa remwaranzi yeultraviolet, izvo zvinotungamira mukuora nekuora kwemapolymer, uye kuora kwechitarisiko uye hunhu hwemakanika. Mushure mekuwedzera UV absorbers, chiedza ichi cheultraviolet chine simba guru chinogona kunyudzwa nenzira yakasarudzwa, chichichichinja kuita simba risingakuvadzi uye choburitswa kana kudyiwa. Nekuda kwemhando dzakasiyana dzepolymers, mawavelength emwaranzi yeultraviolet inoita kuti iparare akasiyanawo. Mawavelength akasiyana eUV anogona kupinza mwaranzi yeultraviolet yemawavelength akasiyana. Pakushandisa, UV absorbers inofanira kusarudzwa zvichienderana nerudzi rwepolymer.

Mhando dzeUV absorber

Mhando dzezvinonyudza UV dzinosanganisira: benzotriazole (yakadai seChinonyudza UV 327), benzophenone (yakadai seChinonyudza UV 531), triazine (yakadai seChinonyudza UV 1164), uye amine inodziviswa (yakadai seChinosimbisa Mwenje 622).

MaBenzotriazole UV absorbers ndiwo anonyanya kushandiswa muChina pari zvino, asi kushandiswa kwetriazine UV absorbers kuri nani zvikuru pane kushandiswa kwebenzotriazole. MaTriazine absorbers ane hunhu hwakanaka hwekunyudzwa kweUV nezvimwe zvakanakira. Anogona kushandiswa zvakanyanya mumapolymers, ane kugadzikana kwakanaka kwekupisa, kugadzikana kwakanaka kwekugadzirisa, uye kuramba acid. Mukushanda kwakakodzera, matriazine UV absorbers ane mhedzisiro yakanaka yekubatana nevanodzikamisa chiedza cheamine vakavharirwa. Kana maviri aya akashandiswa pamwe chete, ane mhedzisiro iri nani pane paanoshandiswa ega.

Zvishandiso zvinonyungudutsa UV zvakawanda zvinowanzoonekwa

(1)UV-531
Upfu hwekristaro hwakachenuruka kana kuti huchena. Huremu hwe1.160g/cm³ (25℃). Nzvimbo yekunyunguduka 48~49℃. Hunonyunguduka muacetone, benzene, ethanol, isopropanol, hunonyunguduka zvishoma mudichloroethane, haunyunguduke mumvura. Kunyunguduka mune zvimwe zvinonyunguduka (g/100g, 25℃) iacetone 74, benzene 72, methanol 2, ethanol (95%) 2.6, n-heptane 40, n-hexane 40.1, mvura 0.5. Semushonga weUV, unogona kunyungudutsa chiedza cheultraviolet nesimba newavelength ye270~330nm. Inogona kushandiswa mumapurasitiki akasiyana-siyana, kunyanya polyethylene, polypropylene, polystyrene, ABS resin, polycarbonate, polyvinyl chloride. Inoenderana zvakanaka nemaresins uye kusachinja-chinja kwakaderera. Chiyero chikuru ndeche 0.1%~1%. Ine simba rakanaka rekubatana kana ikashandiswa nechikamu chidiki che4,4-thiobis(6-tert-butyl-p-cresol). Chigadzirwa ichi chinogonawo kushandiswa sechinosimbisa mwenje wezvipfeko zvakasiyana-siyana.

(2)UV-327
Semushonga unonyungudutsa UV, hunhu hwayo uye mashandisirwo ayo akafanana neebenzotriazole UV-326. Inogona kunyungudutsa mwaranzi ye ultraviolet nesimba re wavelength ye 270 ~ 380nm, ine kugadzikana kwakanaka kwemakemikari uye kusagadzikana kwakaderera. Inoenderana zvakanaka ne polyolefins. Inonyanya kukodzera polyethylene ne polypropylene. Pamusoro pezvo, inogona zvakare kushandiswa kune polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, polyurethane, unsaturated polyester, ABS resin, epoxy resin, cellulose resin, nezvimwewo. Chigadzirwa ichi chinodzivirira kupisa zvakanyanya, chinodzivirira kuwacha, chinodzivirira gasi kupera uye kuchengetedza michina. Chine simba rakakura rekubatana kana chikashandiswa pamwe chete ne antioxidants. Chinoshandiswa kuvandudza kugadzikana kwekupisa kwechigadzirwa.

(3)UV-9
Upfu hwekristaro hwakachenuruka kana kuti huchena. Huremu hwe1.324g/cm³. Nzvimbo yekunyunguduka 62~66℃. Nzvimbo yekufashaira 150~160℃ (0.67kPa), 220℃ (2.4kPa). Hunonyunguduka muzvinhu zvakawanda zvinonyunguduka zvakaita seacetone, ketone, benzene, methanol, ethyl acetate, methyl ethyl ketone, ethanol, asi hazvinyunguduke mumvura. Kunyunguduka mune zvimwe zvinonyunguduka (g/100g, 25℃) i solvent benzene 56.2, n-hexane 4.3, ethanol (95%) 5.8, carbon tetrachloride 34.5, styrene 51.2, DOP 18.7. Semushonga unonyungudutsa UV, wakakodzera mapurasitiki akasiyana-siyana akadai sepolyvinyl chloride, polyvinylidene chloride, polymethyl methacrylate, unsaturated polyester, ABS resin, cellulose resin, nezvimwewo. Hurefu hwewavelength yemushonga i280~340nm, uye chiyero chakazara i0.1%~1.5%. Une kugadzikana kwakanaka kwekupisa uye hauori pa200℃. Chigadzirwa ichi hachinyanyi kunyungudutsa chiedza chinoonekwa, saka chakakodzera zvigadzirwa zvine ruvara rwakajeka. Chigadzirwa ichi chinogonawo kushandiswa mumapendi nerabha yekugadzira.