GB/T 13452.2-2008 in English

《GB/T 13452.2-2008色漆和清漆 漆膜厚度的测定》由TC5（全国涂料和颜料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本部分为1992年首次发布，本次为第一次修订。GB/T 13452《色漆和清漆》分为4个部分，本部分为GB/T 13452的第2部分。本标准规定了一系列用于测量涂敷至底材上的涂层的厚度的方法，包括测量湿膜厚度、干膜厚度、未固化粉末涂层厚度及粗糙表面上漆膜厚度的方法。本部分代替GB/T 13452.2-1992《色漆和清漆 漆膜厚度的测定》.
本部分与前版GB/T 13452.2-1992的主要技术差异为：
――本部分增加了第3章术语和定义；
――本部分测试部分以湿膜厚度、干膜厚度、未固化粉末涂层厚度和粗糙表面上漆膜度为主线分为四大章，在每一章又分别列出了相关的测试方法，而前版是以单个测试方法为线索进行排列；
――本部分第4章和第5章增加了测试湿膜厚度和干膜厚度的方法种类；
――本部分第6章和第7章增加了测试未固化粉末涂层厚度和粗糙表面上漆膜厚度的内容；
――本部分第4章至第6章增加了采用光热技术、辐射技术和声学技术的测试方法；
――本部分增加了附录A，以列表形式概括了各类漆膜厚度的相关测试方法，对每一种测试方法又分别规定了适用的底材、适用范围、现有标准和精密度数据等；
――本部分增加了参考文献。

1 Scope

This part specifies a number of methods that are applicable to the measurement of the thickness of coatings applied to a substrate. Methods for determining wet-film thickness, dry-film thickness and the film thickness of uncured powder layers are described. Reference is made to individual standards where these exist. Otherwise the method is described in detail.

An overview on the methods is given in Annex A, in which the field of application, existing standards and the precision are specified for the individual methods.

This part also defines terms concerning the determination of film thickness.

2 Normative References

The following normative document contains provisions which, through reference in this text, constitute provisions of this part of GB/T 13452. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies.

ISO 463 Geometrical Product Specifications (GPS) — Dimensional Measuring Equipment — Design and Metrological Characteristics of Mechanical Dial Gauges

ISO 3611 Micrometer Callipers for External Measurement

ISO 4618:2006 Paints and Varnishes — Terms and Definitions

ISO 8503-1 Preparation of Steel Substrates Before Application of Paints and Related Products — Surface Roughness Characteristics of Blast-cleaned Steel Substrates — Part 1: Specifications and Definitions for ISO Surface Profile Comparators for the Assessment of Abrasive Blast-cleaned Surfaces

 
3 Terms and Definitions

For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.

3.1
substrate
surface to which a coating material is applied or is to be applied
[ISO 4618:2006]

3.2
coating
continuous layer formed from a single or multiple application of a coating material to a substrate
[ISO 4618:2006]

3.3
film thickness
distance between the surface of the film and the surface of the substrate

3.4
wet-film thickness
thickness of a freshly applied wet coating material, measured immediately after application

3.5
dry-film thickness
thickness of a coating remaining on the surface when the coating has hardened

3.6
thickness of uncured powder layer
thickness of a freshly applied coating material in powder form, measured immediately after application and before stoving

Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Determination of Wet-film Thickness
5 Determination of Dry-film Thickness
6 Determination of Thickness of Uncured Powder Layers
7 Measurement of Film Thickness on Rough Surfaces
8 Test Report
Annex A (Informative) Overview of Methods
Bibliography