| 摘要: |
| 在紫外线老化前后,利用光电子能谱(XPS)研究了分别添加 金红石型和锐钛型纳米TiO2的氯醚树脂。研究发现,氯醚树脂中氯、氧元素具有表面富积现象——趋肤效应,而钛和碳元素在内层聚集;添加颜料粒子越小,在 表面含量越大;金红石型纳米二氧化钛紫外屏蔽性好,减缓树脂老化;而锐钛型纳米二氧化钛具有显著的光催化活性,加速树脂老化。因此,金红石型纳米二氧化钛 将是一种有前途的紫外线吸收剂。 |
| 关键词: 纳米TiO2 氯醚树脂 光电子能谱(XPS) 紫外吸收 |
| DOI： |
| 分类号: |
| 基金项目:青岛市重点实验室创新基金项目(JXM-0109) |
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| Investigation of poly （Vinyl Chloride-Co-Isobutyl Vinyl Ether） modified by Nano-TiO2 with XPS |
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| Abstract: |
| Poly (Vinyl Chloride-Co-Isobutyl Vinyl Ether) (PVCCIVE) with rutile and anatase nano-TiO2 was investigated with XPS before and after UV light exposure respectively. The results indicate that the elements such as Chlorine and Oxygen in the PVCCIVE resin are rich in the surface, namely skin effect, in contrast, Titanium and Carbon are rich in the inner. Meanwhile, the smaller the pigment particles, the higher the content in the surface. The results also show that the rutile nano-TiO2 is excellent in UV screening and reduces the ageing of resin, while the anatase nano-TiO2 is highly active in photo catalysis and accelerates the ageing of resin. Hence then, rutile nano-TiO2 is a kind of promising UV absorber. |
| Key words: Nano-TiO2 Poly (Vinyl Chloride-Co-Isobutyl Vinyl Ether) X-ray photoelectron spectroscopy (XPS) UV absorption |
