GB/T 4893.10-2024 Test of surface coatings of furniture - Part 10: Determination of surface resistance to scratching
1 Scope
This document describes a method for determining the resistance to scratching of surface coatings of furniture.
This document is applicable to all cured surfaces of finished furniture and tests carried out on unused furniture or test panel surfaces.
This document does is not applicable to leather and textile surfaces.
2 Normative references
No normative reference is listed in this document.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the following apply.
3.1
test panel
test panel with test surface
Note: The test panel is taken from the furniture, or an independent panel made using the same materials and finishing methods as the furniture
3.2
scratching trace
visible and measurable trace produced by the tip of the scribing needle on the test surface under the specified load
3.3
scratching resistance
minimum load required to create a scratch greater than or equal to 0.30 mm in width on surface coatings of furniture with a scratching needle
Note: The unit is Newton (N).
3.4
preliminary assessments of the scratching resistance
minimum load to produce a specified scratch on one test surface
3.5
intermediate assessment of scratching resistance
average of the preliminary assessment of the scratching resistance of a test surface
3.6
final value of scratching resistance
average of the intermediate assessment of scratching resistance of the three test surfaces
4 Principle
Scratching resistance is the minimum load (in N) required to use a scratching needle (see 7.2) to produce scratches with specified width requirements on surface coatings of furniture. It determines the ability of the surface coatings of furniture to resist scratching by a certain force.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test conditions
6 Materials
7 Apparatus
8 Samples
9 Test procedures
10 Test data processing
11 Test report
Annex A (Informative) Inspection of scribing needle tip, example of results record sheet and calculation of final values
家具表面漆膜理化性能试验 - 第10部分：耐划痕测定法
1 范围
本文件描述了家具表面漆膜耐划痕测定的方法。
本文件适用于所有经涂饰处理的家具固化表面,且在未使用过的家具或试验样板表面上进行的试验。
本文件不适用于皮革和纺织品表面。
2 规范性引用文件
本文件没有规范性引用文件。
3 术语和定义
下列术语和定义适用于本文件。
3.1
试验样板test panel
具有试验表面的试件。
注:试验样板是从家具上截取,或者采用与家具相同的材料和涂饰方法制作的独立样板
3.2
划痕scratching trace
在规定的载荷下,划针尖端在试验表面产生的能看见且能测量的痕迹
3.3耐划痕
scratching resistance
用划针在家具表面漆膜产生宽度大于或等于0.30mm的划痕,所需施加的最小载荷
注:单位为牛(N)。
3.4
耐划痕的初步评定值preliminary assessments of the scratching resistance
在一个试验表面上产生指定划痕的最小载荷
3.5耐划痕的中间评定值intermediate assessment of scratching resistance
一个试验表面耐划痕的初步评定值的平均值。
3.6耐划痕的最终值 final value of scratching resistance
三个试验表面耐划痕的中间评定值的平均值。
4 原理
耐划痕是使用划针(见7.2)在家具表面漆膜产生指定宽度要求的划痕所需施加的最小载荷(单位为N),确定家具表面漆膜抵抗一定作用力下划针刻划的能力。
