聚氨酯薄膜紫外/臭氧環境的老化行為

王海燕; 王艷芝; 孫宗薈; 田克松; 張萬富; 黃世杰

doi:10.13374/j.issn1001-053x.2013.12.003

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聚氨酯薄膜紫外/臭氧環境的老化行為

doi: 10.13374/j.issn1001-053x.2013.12.003

1. 燕山大學環境與化學工程學院, 秦皇島 066004;
2. 燕山大學河北省應用化學重點實驗室, 秦皇島 066004

基金項目:

國家高技術研究發展計劃資助項目(2012AA7033050)

詳細信息

通訊作者:
王艷芝,E-mail:hhwyz@ysu.edu.cn

中圖分類號: TQ323.8;TB383
計量
- 文章訪問數: 350
- HTML全文瀏覽量: 88
- PDF下載量: 8
- 被引次數: 0
出版歷程
- 收稿日期: 2013-07-12

Aging behaviors of polyurethane films exposed to UV/O₃ atmosphere

1. College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;
2. Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China

摘要

摘要: 采用旋涂法制備了純聚氨酯薄膜(PU)和紫外吸收劑UV-531改性聚氨酯薄膜(M-PU).使用本課題組自行研制的老化裝置進行單一紫外輻照、單一臭氧氣氛以及紫外/臭氧綜合老化實驗.利用色差、黃色指數、紫外可見光譜和傅里葉變換紅外光譜表征薄膜在不同環境中的老化行為.測試結果表明:紫外和臭氧對PU和M-PU薄膜都表現出顯著的協同老化效應;添加質量分數為0.25%的UV-531,能提高聚氨酯薄膜在紫外環境、紫外/臭氧綜合環境以及臭氧環境中短期暴露時的耐黃變性能.在單一紫外輻照、單一臭氧氣氛以及紫外/臭氧綜合老化期間,兩種薄膜中氨酯結構均隨著暴露時間的增加而逐漸減少.
- 聚氨酯 /
- 薄膜 /
- 臭氧 /
- 紫外輻照 /
- 材料老化
Abstract: A pure polyurethane film and a modified polyurethane film containing ultraviolet light absorber UV-531 were prepared by spin-coating. Accelerated aging tests of the films exposed to ozone atmosphere, UV radiation, and UV/ozone atmosphere, were performed by using self-designed aging equipment. The aging behaviors of the films exposed to different atmospheres were evaluated by color difference, yellowness index, UV-Vis spectra, and Fourier transform infrared spectra. There is distinct synergistic aging effect between ozone-aging and UV-aging on both PU and M-PU films. The yellowing resistance properties of the polyurethane film in UV radiation atmosphere, UV/O₃ atmosphere, and short-time ozone atmosphere can be improved by adding 0.2570 UV-531 into the film. The urethane structures in the two films decrease with increasing exposure time during exposure to the studied three atmospheres.
- polyurethanes /
- thin films /
- ozone /
- ultraviolet radiation /
- aging of materials