Intangiriro ya UV ikurura

Imirasire y'izuba irimo urumuri rwinshi rwa ultraviolet rwangiza ibintu byamabara. Uburebure bwayo ni 290 ~ 460nm. Imirasire yangiza ultraviolet itera molekile yamabara kubora no gucika binyuze mumiti ya okiside-igabanya. Gukoresha imashini zikoresha ultraviolet zirashobora gukumira neza cyangwa kugabanya kwangirika kwimirasire ya ultraviolet kubintu bikingiwe.

Imashini ya UV ni stabilisateur yumucyo ishobora gukurura igice cya ultraviolet yumucyo wizuba hamwe nurumuri rwa fluorescent idahinduye ubwayo. Plastike nibindi bikoresho bya polymer bitanga auto-okiside munsi yizuba na fluorescence bitewe nigikorwa cyimirasire ya ultraviolet, biganisha ku kwangirika no kwangirika kwa polymers, no kwangirika kwimiterere nubukanishi. Nyuma yo kongeramo imashini ya UV, urumuri rwinshi rwa ultraviolet urumuri rushobora kwinjizwa neza, rukabihindura imbaraga zitagira ingaruka hanyuma rukarekurwa cyangwa rugakoreshwa. Bitewe nubwoko butandukanye bwa polymers, uburebure bwumurase wimirasire ya ultraviolet butera kwangirika nabyo biratandukanye. Imashini itandukanye ya UV irashobora gukurura imirasire ya ultraviolet yuburebure butandukanye. Iyo ukoresheje, imashini ya UV igomba guhitamo ukurikije ubwoko bwa polymer.

Ubwoko bwa UV ikurura

Ubwoko busanzwe bwa UV ikurura harimo: benzotriazole (nkaImashini ya UV 327), benzophenone (nkaImashini ya UV 531), triazine (nkaUV imashini 1164), akabangamira amine (nkaUmucyo woroshye 622).

Imashini ya Benzotriazole UV ubu ni ubwoko bukoreshwa cyane mu Bushinwa, ariko ingaruka zo gukoresha za triazine UV zikoresha ni nziza cyane ugereranije na benzotriazole. Imashini ya Triazine ifite imitekerereze myiza ya UV nibindi byiza. Birashobora gukoreshwa cyane muri polymers, bifite ubushyuhe buhebuje bwumuriro, gutunganya neza, hamwe no kurwanya aside. Mubikorwa bifatika, imashini ya triazine UV igira ingaruka nziza yo guhuza hamwe na amine itabangamira urumuri. Iyo byombi bikoreshejwe hamwe, bigira ingaruka nziza kuruta iyo zikoreshwa wenyine.

Benshi bakunze kubona imashini ya UV

(1)UV-531
Ifu yumuhondo cyangwa yera yera. Ubucucike 1.160g / cm³ (25 ℃). Gushonga ingingo 48 ~ 49 ℃. Gushonga muri acetone, benzene, Ethanol, isopropanol, gushonga gake muri dichloroethane, kutaboneka mumazi. Gukemura ibibazo bimwe na bimwe (g / 100g, 25 ℃) ni acetone 74, benzene 72, methanol 2, Ethanol (95%) 2.6, n-heptane 40, n-hexane 40.1, amazi 0.5. Nkimashini ya UV, irashobora gukurura cyane urumuri ultraviolet hamwe nuburebure bwa 270 ~ 330nm. Irashobora gukoreshwa muri plastiki zitandukanye, cyane cyane polyethylene, polypropilene, polystirene, ABS resin, polyakarubone, chloride polyvinyl. Ifite guhuza neza na resin hamwe no guhindagurika guke. Igipimo rusange ni 0.1% ~ 1%. Ifite ingaruka nziza yo guhuza iyo ikoreshejwe hamwe na 4.4-thiobis (6-tert-butyl-p-cresol). Ibicuruzwa birashobora kandi gukoreshwa nka stabilisateur yumucyo kubintu bitandukanye.

(2)UV-327
Nkimashini ya UV, ibiyiranga nibikoreshwa bisa nibya benzotriazole UV-326. Irashobora kwinjiza cyane imirasire ya ultraviolet ifite uburebure bwa 270 ~ 380nm, ifite imiti ihamye kandi ihindagurika cyane. Ifite guhuza neza na polyolefine. Irakwiriye cyane cyane polyethylene na polypropilene. Byongeye kandi, irashobora kandi gukoreshwa muri polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, polyurethane, polyester idahagije, ABS resin, epoxy resin, selile selile, nibindi. Ifite akamaro gakomeye ko guhuza iyo ikoreshejwe hamwe na antioxydants. Byakoreshejwe mugutezimbere ubushyuhe bwa okiside yibicuruzwa.

(3)UV-9
Ifu yumuhondo cyangwa yera yera. Ubucucike 1.324g / cm³. Gushonga ingingo 62 ~ 66 ℃. Ingingo yo guteka 150 ~ 160 ℃ (0.67kPa), 220 ℃ (2.4kPa). Gushonga mumashanyarazi menshi nka acetone, ketone, benzene, methanol, Ethyl acetate, methyl etyl ketone, Ethanol, ariko ntibishonga mumazi. Amashanyarazi mumashanyarazi amwe (g / 100g, 25 ℃) ni benzene 56.2, n-hexane 4.3, Ethanol (95%) 5.8, tetrachloride ya karubone 34.5, styrene 51.2, DOP 18.7. Nkimashini ya UV, ikwiranye na plastiki zitandukanye nka polyvinyl chloride, polyvinylidene chloride, polymethyl methacrylate, polyester idahagije, ABS resin, selile selile, nibindi byinshi. Ifite ubushyuhe bwiza kandi ntishobora kubora kuri 200 ℃. Ibicuruzwa ntibishobora gukuramo urumuri rugaragara, birakwiriye rero kubicuruzwa bifite ibara ryoroshye. Iki gicuruzwa kirashobora kandi gukoreshwa mugushushanya no gushushanya.

 


Igihe cyo kohereza: Gicurasi-09-2025