ZnO-Based UV Nanocomposites for Wood Coatings in Outdoor Applications

被引：61

作者：

Weichelt, Franziska ^{[2
]}

Emmler, Rico ^{[1
]}

Flyunt, Roman ^{[2
]}

Beyer, Evelin ^{[2
]}

Buchmeiser, Michael R. ^{[2
]}

Beyer, Mario ^{[1
]}

机构：

[1] Inst Wood Technol, D-01217 Dresden, Germany

[2] Leibniz Inst Surface Modificat, D-04318 Leipzig, Germany

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2010年 / 295卷 / 02期

关键词：

coatings; hydrophobicity; nanoparticles; UV protection; wood; PARTICLES;

D O I：

10.1002/mame.200900135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocomposite UV coatings with adjustable properties for use on wood substrates in outdoor conditions were developed. Nanoscale ZnO was shown to be an efficient light absorber. Coatings were characterized in terms of elongation at brake, residual PI and double bond conversion, universal hardness, transparency, hydrophobicity, and yellowing. Coated samples were artificially weathered and studied with regard to their optical and mechanical properties, as well as to changes in brightness, transparency, hydrophobicity, and water permeability. The prepared wood coatings showed an increased weather fastness and improved optical properties. The suitability for use in outdoor conditions was assured by optimizing the elasticity of the coating and decreasing its water permeability.

引用

页码：130 / 136

页数：7

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