PMMA/纳米ZnO薄膜的紫外屏蔽性能研究  

Study on Ultraviolet Shielding Properties of PMMA/Nano-ZnO Thin Film

作　　者：洪晓东[1] 邓恩燕[1] 杨东旭[1] 

机构地区：[1]辽宁工程技术大学材料学院,辽宁阜新123000

出　　处：《中国塑料》2013年第1期48-51,共4页China Plastics

摘　　要：采用硅烷偶联剂对纳米ZnO进行了表面改性,并采用旋转涂膜法制备了聚甲基丙烯酸甲酯(PMMA)/纳米ZnO薄膜,研究了薄膜的紫外屏蔽性能。结果表明,表面改性的纳米ZnO在水和甲苯中均无明显沉淀现象,其溶解性得到改善;改性纳米ZnO红外图谱中877cm-1处出现的新吸收峰,可证实偶联剂已成功修饰于粒子表面;光学显微镜与原子力显微镜测试表明,改性ZnO在PMMA薄膜中的颗粒团聚减少,其分散性得到改善。当PMMA在甲苯中浓度为0.04g/mL、纳米ZnO为PMMA质量的10%时,薄膜的紫外屏蔽性能最好,紫外区透过率为0.66;相同配比的PMMA/改性ZnO薄膜的紫外屏蔽性能明显提高,紫外区透过率为0.53。The surface of nano-ZnO particles was modified with coupling agent KH550, and thin film of PMMA/nano-ZnO was prepared via spin-coating method. The ultraviolet shielding properties of the thin film was studied. The modified nano-ZnO could be well dispersed in water and toluene with no precipitation. On the FT-IR spectrum of modified nano-ZnO, a new absorption peak was found at 877 cm-1 , which confirmed the attachment of the coupling agent on the particle surface. Optical microscope and AFM showed that the agglomeration of modified nano-ZnO decrease remarkably in the PMMA film. When the concentration of PMMA in toluene was 0. 04 g/mL, the weight content of unmodified nano-ZnO in PMMA was 10 %, the film provided a ultraviolet transmission rate of 0. 66. When the modified nano-ZnO was used, the ultraviolet transmission rate was decreased to 0. 53.

关 键 词：聚甲基丙烯酸甲酯 纳米氧化锌 薄膜 紫外屏蔽 

分 类 号：TB383.2[一般工业技术—材料科学与工程]