Modification of UV Waterborne Polyurethane by TiO 2 /Graphene Composites

被引：0

作者：

Ouyang S. ^{[1
]}

Ren C. ^{[1
]}

Cheng J. ^{[2
]}

Chen G. ^{[1
]}

Huang H. ^{[1
]}

Li Z. ^{[1
]}

Zhao Q. ^{[1
]}

机构：

[1] School of Chemical Engineering, Sichuan University, Chengdu

[2] Sichuan Carpoly Paint Co.Ltd, Chengdu

来源：

Zhao, Qiang (zhaoqiang@scu.edu.cn) | 2018年 / Sichuan University卷 / 34期

关键词：

Graphene; Nanocomposites; Titanium dioxide; Ultraviolet light curing; Waterborne polyurethane;

D O I：

10.16865/j.cnki.1000-7555.2018.12.003

中图分类号：

学科分类号：

摘要：

Anatase type nano-TiO 2 was prepared by sol-gel method, and graphene oxide was prepared by modified Hummers method, then nano-TiO 2 /graphene composites were synthesized by hydrothermal method. Using isophorone diisocyanate and polyethylene glycol 1000 as reaction monomer, dibutyltin dilaurate as catalyst, dimethylol propionic acid as chain extender and methacrylic acid hydroxyethyl ester-terminated, the waterborne polyurethane prepolymer was prepared. Polyurethane coated with different mass fraction of TiO 2 /graphene composites was prepared by adding TiO 2 /graphene composites into the polyurethane system. SEM, XRD, FT-IR, and UV-Vis spectroscopy were used to analyze the morphology, composition, structure and photocatalytic degradation of composites. The results show that TiO 2 /graphene composites show good photocatalytic performance. The degradation rate of methyl orange reaches 77.20% for 24 h under ultraviolet irradiation, which is better than that filled with pure TiO 2 . The degradation rate of TiO 2 /graphene to methyl orange is 57.52% under visible light condition, while pure TiO 2 has little degradation ability. Mechanical properties of polyurethane coatings modified with TiO 2 /graphene composites are improved in various degrees. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：13 / 19

页数：6

共 12 条

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