Studying the role of polysiloxane additives and nano-SiO2 on the mechanical properties of a typical acrylic/melamine clearcoat

被引：22

作者：

Ramezanzadeh, B. ^{[1
,2
]}

Moradian, S. ^{[1
]}

Tahmasebi, N. ^{[3
]}

Khosravi, A. ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Polymer Engn & Color Technol, Tehran, Iran

[2] Inst Color Sci & Technol, Dept Surface Coatings & Corros, Tehran, Iran

[3] Islamic Azad Univ, Mahshahr Branch, Dept Polymer Engn, Mahshahr 63519, Iran

来源：

PROGRESS IN ORGANIC COATINGS | 2011年 / 72卷 / 04期

关键词：

Polysiloxan additives; Nano-SiO2; Mechanical properties; Nano-indentation; ATR-FTIR; SCRATCH RESISTANCE; COATINGS; SURFACE; PERFORMANCE; PARTICLES; BEHAVIOR; MODELS;

D O I：

10.1016/j.porgcoat.2011.07.003

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Effects of conventional polysiloxane additives and nano-SiO2 on the mechanical properties of an automotive acrylic/melamine clearcoat (CC) are studied. Clearcoats formulations were prepared by addition of different concentrations of polysioloxane additives (with different modifications) and hydrophobic nano-SiO2 particles. Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) and atomic force microscope (AFM) were utilized to evaluate the effects of nano-SiO2 and polysiloxane additives on the surface properties of the CCs. The mechanical properties of the surface and the bulk of the CCs were studied by nano-indentation and tensile tests, respectively. Results showed that polysiloxane additives can mostly affect the mechanical properties of the surface of the CC. Additives with shorter side chains and therefore higher surface activity caused higher changes on the surface properties the CC. Unlike conventional polysiloxane additives, the nano-SiO2 particles mainly influenced the mechanical properties of the bulk of the CC. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：621 / 631

页数：11

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