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This standard is developed in accordance with the rules given in GB/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards.
This standard was proposed by and is under the jurisdiction of SAC/TC 114 National Technical Committee on Automobiles of Standardization Administration of China.
Contents
Foreword i
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Classification of coatings 2
5 Technical requirements 3
6 Test method 7
Coating technical conditions for automotive plastic parts
1 Scope
This standard specifies the classification, technical requirements and test methods of coatings for automotive plastic parts.
This standard is applicable to the decorative and/or protective coatings for interior plastic parts, exterior plastic parts and underhood plastic parts. The coatings for small plastic parts such as standard fasteners and buckles can refer to this standard.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1727 Methods of producing films of paints, varnishes, lacquers and related products on test panels
GB/T 1735 Paints and varnishes - Determination of heat resistance (GB/T 1735-2009, ISO 3248: 1998, MOD)
GB/T 1766 Paints and varnishes - Rating schemes of degradation of coats
GB/T 1768 Method of test for abrasion resistance of paint films (GB/T 1768-2006, ISO 7784-2:1997, IDT)
GB/T 1865-2009 Paints and Varnishes - Artificial Weathering and Exposure to Artificial Radiation-Exposure to Filtered Xenon-arc Radiation (ISO 11341: 2004, IDT)
GB/T 6739 Paints and varnishes - Determination of film hardness by pencil test (GB/T 6739-2006, ISO 15184: 1998, IDT)
GB/T 9274-1988 Paints and varnishes; Determination of resistance to liquids
GB/T 9276 Methods of exposure to natural weathering of coating (GB/T 9276-1996, eqv ISO 2810: 1974)
GB/T 9278 Temperatures and humidities for conditioning and testing of paint specimens (GB/T 9278-2008, ISO 3270: 1984, IDT)
GB/T 9286 Paints and varnishes - Cross cut test for films (GB/T 9286-1998, eqv ISO 2409: 1992)
GB/T 9754 Paints and varnishes - Determination of specular gloss of non-metallic paint films at 20° 60°and 85° (GB/T 9754-2007, ISO 2813: 1994, IDT)
GB/T 13452.2 Paints and varnishes - Determination of film thickness (GB/T 13452.2-2008, ISO 2808: 2007, IDT)
GB/T 13893 Paints and varnishes - Determination of resistance to humidity - Continuous condensation
GB/T 23436 Cleaning fluids for automotive windshield (GB/T 23436-2009, JIS K 2398-1: 2001, NEQ)
ISO 4628-2 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering)
ISO 20567-1 Paints and varnishes - Determination of stone-chip resistance of coatings - Part 1: Multi-impact testing)
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
interior plastic parts
plastic parts mounted on the automotive body or inside the cab
3.2
exterior plastic parts
plastic parts mounted on the automotive body or outside the cab
3.3
underhood plastic parts
plastic parts mounted inside the automotive engine compartment
3.4
sample piece
a test specimen which is taken from a complete product or part of the product in actual assembly state
3.5
template
a test specimen which has the same substrate as the sample piece, and a coated plastic plate which is prepared by the same coating process
4 Classification of coatings
The coatings are classified according to the mounting location of the automotive plastic parts and the ambient conditions. Classification, code, service condition and application example of coatings are given in Table 1.
Table 1 Classification, code, service condition and application example
Classification Code Service condition Application example
Interior plastic parts A-1 Under direct sunlight exposure and high temperature Instrument panel assembly, sun visor bracket, inner rear-view mirror housing and rear package tray, etc.
A-2 Under direct sunlight exposure and relatively high temperature Instrument panel vertical surface, steering wheel, floor console assembly, door trim, upper pillar trim, glasses case, central control panel, seat guard board, door handle (including roof grab handle), etc.
A-3 Without direct sunlight exposure Lower pillar trim, sill, seat guard board, etc.
Exterior
plastic parts B-1 Under direct sunlight exposure and high temperature Antenna cap, sunroof top cover, company logo, word mark, washer nozzle, bumper, front outer panel, trim cover (strip), air director, fender, side trim cover, sill trim panel, pillar trim panel, side guard, outer rear-view mirror housing, windshield trim panel, deflector channel cover, etc.
B-2 Under direct sunlight exposure and near the engine heat source Radiator cover, fog light, grille, etc.
B-3 Without direct sunlight exposure Wheel cover, fender, tread plate trim cover (commercial automobile), etc.
Underhood
plastic parts C-1 Under direct contact with engine heat source Engine trim cover, etc.
C-2 Under indirect contact with engine heat source Various protective guards, etc.
5 Technical requirements
5.1 Technical requirements for the coatings for interior plastic parts (see Table 2)
Table 2 Technical requirements for the coatings for interior plastic parts
S.N. Item Technical requirement Test method
A-1 A-2 A-31
1 Appearance Smooth and uniform; the hand feeling, gloss and color meets the requirements of drawings; no pinhole, shrinkage cavity, exposed base, sagging and other defects Visual inspection and touching
2 Thickness, μm In accordance with the product requirements GB/T 13452.2
3 Cross cut test Grade 1 or better GB/T 9286
4 Hardness, N ≥10, the coating is free from damage, with slight traces allowed. See Subclause 6.2
5 Heat resistance a After storage at 110℃±2℃ for 120 h, the coating has no change in appearance and its cross cut test is of Grade 1 or better. After storage at 80℃±2℃ for 120 h, the coating has no change in appearance and its cross cut test is of Grade 1 or better. After storage at 70℃±2℃ for 120 h, the coating has no change in appearance and its cross cut test is of Grade 1 or better. GB/T 1735
6 Temperature resistance a No cracking, staining or other damage; with slight change in color and gloss allowed; the cross cut test is of Grade 1 or better See Subclause 6.3
7 Moisture resistance After being conditioned for 24 h after the test duration of 240 h, no blistering or change in color; and the cross cut test and the hardness test are in accordance with those specified in Items 3 and 4 in this table. GB/T 13893
ISO 4628-2
8 Abrasion resistance In accordance with the product requirements GB/T 1768
9 Surfactant resistant At normal temperature for 8 h, with neutral washing liquid, no blistering, peeling, swelling, softening or other damage as well as no obvious change in color and gloss. Sbuclause 5.4
In GB/T 9274-1988
10 Windshield washer fluid resistance At normal temperature for 8 h, with the windshield washer fluid given in GB/T 23436, no blistering, peeling, swelling, softening or other damage as well as no obvious change in color and gloss. Subclause 5.4
In GB/T 9274-1988
11 Moisturizer resistance With improvement in gloss allowed, but change in color and hand feeling not allowed. The cross cut test and the hardness test are in accordance with those specified in Items 3 and 4 in this table. — See Subclause 6.4
12 Artificial sweat resistance No obvious change in appearance — See Sublcause 6.5
13 Artificial radiation exposure 500 h 300 h — See Subclause 6.6
GB/T 1766
The decorative films have a comprehensive rating of 0, and the cross cut test and the hardness test are in accordance with those specified in Items 3 and 4 in this table.
Note: a test temperature is recommended under normal circumstances. Other agreed test temperatures may be used depending on the materials of the plastic parts, however, it shall be indicated in the test report.
5.2 Technical requirements for the coatings for exterior plastic parts (see Table 3)
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification of coatings 5 Technical requirements 6 Test method
ICS 43.020 T 04 中华人民共和国汽车行业标准 QC/T 966—2014 汽车塑料件涂层技术条件 Coating technical conditions for automotive plastic parts 2014—05—06发布 2014—10—01实施 中华人民共和国工业和信息化部 发布 前言 本标准按照GB/T 1.1—2009《标准化工作导则 第1部分：标准的结构和编写》给出的规则起草。 本标准由全国汽车标准化技术委员会(SAC/TC 114)提出并归口。 汽车塑料件涂层技术条件 1 范围 本标准规定了汽车塑料件涂层的分类、技术要求和试验方法。 本标准适用于具有装饰性和/或防护性的汽车内装塑料件、外装塑料件和发动机舱内塑料件的涂层，标准紧固件和卡扣等小型塑料件的涂层可参照使用。 2规范性引用文件 下列文件对于本标准的应用是必不可少的。凡是注日期的引用文件，仅所注日期的版本适用于本标准。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本标准。 GB/T 1727漆膜一般制备法 GB/T 1735色漆和清漆 耐热性的测定(GB/T 1735—2009，ISO 3248：1998，MOD) GB/T 1766色漆和清漆 涂层老化的评级方法 GB/T 1768色漆和清漆 耐磨性的测定 旋转橡胶砂轮法(GB/T 1768—2006，ISO 7784—2：1997，IDT) GB/T 1865—2009色漆和清漆 人工气候老化和人工辐射曝露 滤过的氙弧辐射(ISO 11341：2004，IDT) GB/T 6739色漆和清漆 铅笔法测定漆膜硬度(GB/T 6739—2006，ISO 15184：1998，IDT) GB/T 9274—1988色漆和清漆 耐液体介质的测定 GB/T 9276涂层自然气候曝露试验方法(GB/T 9276—1996，eqv ISO 2810：1974) GB/T 9278涂料试样状态调节和试验的温湿度(GB/T 9278—2008，ISO 3270：1984，IDT) GB/T 9286色漆和清漆 漆膜的划格试验(GB/T 9286—1998，eqv ISO 2409：1992) GB/T 9754色漆和清漆 不含金属颜料的色漆漆膜的20°、60°和85°镜面光泽的测定(GB/T 9754—2007，ISO 2813：1994，IDT) GB/T 13452.2色漆和清漆 漆膜厚度的测定(GB/T 13452.2—2008，ISO 2808：2007，IDT) GB/T 13893 色漆和清漆 耐湿性的测定 连续冷凝法 GB/T 23436汽车风窗玻璃清洗液(GB/T 23436—2009，JIS K 2398-1：2001，NEQ) ISO 4628-2色漆和清漆 漆膜降解的评定 缺陷量值、大小和外观均匀程度的规定 第2部分：起泡等级的评定(Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects，and of intensity of uniform changes in appearance—Part 2：Assessment of degree of blistering) ISO 20567-1 色漆和清漆 涂层的耐石片划性的测定 第1部分：多冲击试验(Paints and var-nishes—Determination of stone-chip resistance of coatings—Part 1：Multi-impact testing) 3术语和定义 下列术语和定义适用于本标准。 3.1 内装塑料件interior plastic parts 安装在汽车车身或驾驶室内部的塑料件。 3.2 外装塑料件exterior plastic parts 安装在汽车车身或驾驶室外部的塑料件。 3.3 发动机舱内塑料件underhood plastic parts 安装在汽车发动机舱内部的塑料件。 3.4 样件sample piece 供试验用的试样，取自实际装配使用状态下的完整制品或制品的一部分。 3.5 样板template 供试验用的试样，与样件的基材相同，并按同一涂装工艺所制备的带有涂层的塑料板。 4涂层分类 根据汽车塑料件的安装部位和使用环境条件，将涂层分类。汽车塑料件的涂层分类、涂层代号、使用条件及应用示例见表1。 表1 塑料件涂层分类、涂层代号、使用条件及应用示例 涂层分类 涂层代号 使用条件 应用示例 内装塑料件 A—1 受太阳光直接照射，温度高的场合 仪表板总成、遮阳板支座、内后视镜壳体及支架、后包裹架等 A—2 受太阳光直接照射，温度比较高的场合 仪表板垂直面、方向盘、副仪表板总成、门护板、立柱上护板、眼镜盒、中央控制面板、座椅护板、门内拉手(包括顶棚拉手)等 A—3 不受太阳光直接照射的场合 立柱下护板、门槛压条、座椅下护板等 外装 塑料件 B—1 受太阳光直接照射，温度高的场合 天线帽、天窗顶盖、公司标牌、字标、洗涤喷嘴、保险杠、前围外板、装饰罩(条)、导流罩(板)、翼子板、侧装饰罩、门槛装饰板、立柱装饰板、侧防护板、外后视镜壳体、风窗装饰板、流水槽盖板等 B—2 受太阳光直接照射，且接近发动机热源的场合 散热器面罩、雾灯格栅等 B—3 不受太阳光直接照射的场合 轮罩、挡泥板、踏脚板装饰罩(商用车)等
