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纺织品 色牢度试验 耐唾液色牢度
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GBT 18886-2019
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标准编号: GB/T 18886-2019 (GB/T18886-2019)
中文名称: 纺织品 色牢度试验 耐唾液色牢度
英文名称: Textiles -- Tests for colour fastness -- Colour fastness to saliva
行业: 国家标准 (推荐)
中标分类: W04
国际标准分类: 59.080.01
字数估计: 6,688
发布日期: 2019-06-04
实施日期: 2020-01-01
起草单位: 中纺标检验认证股份有限公司、深圳市贝利爽实业有限公司、浩沙实业(福建)有限公司、鲁丰织染有限公司、中国合格评定国家认可中心
归口单位: 全国纺织品标准化技术委员会(SAC/TC 209)
提出机构: 中国纺织工业联合会
发布机构: 国家市场监督管理总局、中国国家标准化管理委员会
GB/T 18886-2019: 纺织品 色牢度试验 耐唾液色牢度
GB/T 18886-2019 英文名称: Textiles -- Tests for colour fastness -- Colour fastness to saliva
本标准规定了纺织品耐唾液色牢度的测定试验方法。
本标准适用于各种纺织品。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 250 纺织品 色牢度试验 评定变色用灰色样卡
GB/T 251 纺织品 色牢度试验 评定沾色用灰色样卡
GB/T 6151 纺织品 色牢度试验 试验通则
GB/T 6682 分析实验室用水规格和试验方法
GB/T 7568.1 纺织品 色牢度试验 毛标准贴衬织物规格
GB/T 7568.2 纺织品 色牢度试验 标准贴衬织物 第2部分:棉和粘胶纤维
GB/T 7568.3 纺织品 色牢度试验 标准贴衬织物 第3部分:聚酰胺纤维
GB/T 7568.4 纺织品 色牢度试验 聚酯标准贴衬织物规格
GB/T 7568.5 纺织品 色牢度试验 聚丙烯腈标准贴衬织物规格
GB/T 7568.6 纺织品 色牢度试验 丝标准贴衬织物规格
GB/T 7568.7 纺织品 色牢度试验 标准贴衬织物 第7部分:多纤维
GB/T 7568.8 纺织品 色牢度试验 标准贴衬织物 第8部分:二醋酯纤维
GB/T 13765 纺织品 色牢度试验 亚麻和苎麻标准贴衬织物规格
GB/T 32598 纺织品 色牢度试验 贴衬织物沾色的仪器评级方法
GB/T 32616 纺织品 色牢度试验 试样变色的仪器评级方法
3 原理
将试样与规定的贴衬织物贴合在一起,置于人造唾液中处理后去除多余的试液,放在试验装置内两
块平板之间并施加规定压强,并在规定条件下保持一定时间,然后将试样和贴衬织物分别干燥,用灰色样卡或仪器评定试样的变色和贴衬织物的沾色。
4 设备和材料
4.1 试验装置
每组试验装置由一个不锈钢架和质量约5kg、底部面积为115mm×60mm的重锤配套组成;并附
有尺寸约115mm×60mm×1.5mm的玻璃板或丙烯酸树脂板。当(100±2)mm×(40±2)mm的组
合试样夹于板间时,可使组合试样受压强(12.5±0.9)kPa。试验装置的结构应保证试验中移开重锤后,试样所受压强保持不变。
4.2 恒温箱
保持温度在(37±2)℃。
4.3 人造唾液
4.3.1 配方组成
所用试剂为化学纯,用三级水(4.12)配制试液,现配现用。
用质量分数为1%的盐酸溶液调节试液pH值至6.8±0.1。
4.3.2 配制方法
将规定用量的钾盐和钠盐溶于900mL三级水(4.12)中,加入氯化镁和氯化钙,不停搅拌,直至其
完全溶解。将经过校准的pH计(4.11)电极浸没在溶液中,慢慢加入1%的盐酸溶液,轻轻搅拌,使溶液
的pH值达到6.8±0.1。加入三级水(4.12)定容至1000mL,摇匀,避光保存。
4.4 贴衬织物(见GB/T 6151)
对4.4.1和4.4.2任选其一。
4.4.1 一块多纤维贴衬,符合GB/T 7568.7。
4.4.2 两块单纤维贴衬织物,符合GB/T 7568.1~7568.6、GB/T 7568.8、GB/T 13765。
第一块用与试样相同的纤维制成,第二块则由表1规定的纤维制成。如试样为混纺或交织品,则第
一块用主要含量的纤维制成,第二块用次要含量的纤维制成。或另作规定。
注:其他种类纤维可参照同类或相近纤维使用。
GB/T 18886-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
W 04
Replacing GB/T 18886-2002
Textiles - Tests for colour fastness -
Colour fastness to saliva
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: JANUARY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Principle ... 6
4 Equipment and materials ... 6
5 Samples ... 8
6 Operating procedures ... 9
7 Test report ... 10
Textiles - Tests for colour fastness -
Colour fastness to saliva
1 Scope
This Standard specifies the test method for the determination of the colour
fastness to saliva of textiles.
This Standard applies to all kinds of textiles.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 250 Textiles - Tests for colour fastness - Grey scale for assessing
change in colour
GB/T 251 Textiles - Tests for colour fastness - Grey scale for assessing
staining
GB/T 6151 Textiles - Tests for colour fastness - General principle of testing
GB/T 6682 Water for analytical laboratory use - Specification and test
methods
GB/T 7568.1 Textiles - Tests for colour fastness - Specification for wool
adjacent fabric
GB/T 7568.2 Textiles - Tests for colour fastness - Standard adjacent fabrics
- Part 2: Cotton and viscose
GB/T 7568.3 Textiles - Tests for colour fastness - Standard adjacent fabrics
- Part 3: Polyamide
GB/T 7568.4 Textiles - Tests for colour fastness - Specification for polyester
adjacent fabric
GB/T 7568.5 Textiles - Tests for colour fastness - Specification for acrylic
adjacent fabric
Other devices which can achieve the same result can be used.
4.2 Thermostat
KEEP the temperature at (37±2) °C.
4.3 Artificial saliva
4.3.1 Formula composition
The reagents used are chemically pure. USE Grade 3 water (4.12) to prepare
the test solution. Prepared when used.
Each liter of test solution contains:
Magnesium chloride hexahydrate (MgCl2 • 6H2O) 0.17 g
Calcium chloride dihydrate (CaCl2 • 2H2O) 0.15 g
Dipotassium hydrogen phosphate trihydrate (K2HPO4 • 3H2O) 0.76 g
Potassium carbonate (K2CO3) 0.53 g
Sodium chloride (NaCl) 0.33 g
Potassium chloride (KCl) 0.75 g
USE hydrochloric acid solution with a mass fraction of 1% to adjust the pH of
the test solution to 6.8±0.1.
4.3.2 Preparation method
DISSOLVE the prescribed amount of sylvite and sodium salts in 900 mL of
Grade 3 water (4.12); ADD magnesium chloride and calcium chloride and stir
until they are completely dissolved. Immerse the calibrated pH meter (4.11)
electrode in the solution; ADD slowly 1% hydrochloric acid solution; STIR gently
1000 mL; SHAKE well and store in the dark.
4.4 Adjacent fabric (See GB/T 6151)
Choose any one of 4.4.1 and 4.4.2.
4.4.1 A multifibre adjacent fabric shall conform to GB/T 7568.7.
4.4.2 Two single-fibre adjacent fabrics shall conform to GB/T 7568.1~7568.6,
GB/T 7568.8, GB/T 13765.
a) TAKE a piece of sample of (100±2)mm×(40±2)mm; CONTACT the front to
a piece of (100±2)mm×(40±2)mm multifibre adjacent fabric (4.4.1). Sew
along a short side to form a combined sample.
between two (100±2)mm×(40±2)mm single-fibre adjacent fabrics (4.4.2).
Sew along a short side to form a combined sample.
5.2 For yarn or loose-fibre samples, the mass of yarn or loose fibre taken is
approximately equal to half the total mass of the adjacent fabric. According to
one of the following methods, prepare a combined sample:
a) SANDWICH it between a piece of (100±2)mm×(40±2)mm multifibre
adjacent fabric and a piece of (100±2)mm×(40±2)mm non-dyeable fabric
(4.4.3). Sew along the four sides (See GB/T 6151) to form a combined
sample.
adjacent fabrics. Sew along the four sides to form a combined sample.
6 Operating procedures
6.1 At room temperature, the combined sample is placed flat in a flat-bottomed
container (4.10). Inject artificial saliva (4.3) to completely wet it at a bath ratio
of 50:1. PLACE it at room temperature for 30 min. From time to time, PRESS
down and stir, to ensure that the test solution can penetrate fully and evenly.
TAKE the sample out; POUR off residual solution; USE a suitable method (such
as two glass rods) to clip the excess test solution off the combined sample.
The combined sample is placed flat between two glass or acrylic acid resin
Note: A maximum of 10 combined samples can be placed simultaneously for each test
device. Each sample is separated by a plate (11 pieces in total). If less than 10
samples, 11 plates are still used, to keep the pressure constant.
6.2 PLACE the test devices (4.1) with the combined sample in the thermostat
(4.2); HOLD at (37±2)°C for 4 h; PLACE the test devices (4.1) horizontal (Figure
1) or vertical (Figure 2).
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