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GB/T 33568-2017: Evaluation of degradation of coatings on exterior wood
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33568-2017 | English | 379 |
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Evaluation of degradation of coatings on exterior wood
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GB/T 33568-2017
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Basic data | Standard ID | GB/T 33568-2017 (GB/T33568-2017) | | Description (Translated English) | Evaluation of degradation of coatings on exterior wood | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B69 | | Classification of International Standard | 79.040 | | Word Count Estimation | 19,150 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Quoted Standard | GB/T 250-2008; GB/T 4893.6-2013; GB/T 17657-2013 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the terminology and definition of outdoor surface finishing with wood, finishing grade and evaluation method. This standard is applicable to the evaluation of aging properties of outdoor wood finish, including natural aging and artificial aging. | GB/T 33568-2017: Evaluation of degradation of coatings on exterior wood---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Evaluation of degradation of coatings on exterior wood
ICS 79.040
B69
National Standards of People's Republic of China
Surface aging grade and evaluation method of outdoor wood finishing
2017-05-12 released
2017-12-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. The release of this document
The Agency does not assume responsibility for identifying these patents.
This standard is proposed by the State Forestry Administration.
This standard is under the jurisdiction of the National Committee for Standardization of Wood (SAC/TC41).
The drafting of this standard. China Forestry Research Institute of Wood Industry Research Institute, the national wood-based panel and wood products quality supervision and inspection
Heart, Southwest Forestry University, the State Forestry Administration Forest Products Quality Inspection and Testing Center (Nanning), the United States Copanuo Experimental Equipment Company Shanghai Representative Office,
Xiamen City Geling Biotechnology Co., Ltd., Quanzhou Meibang Instrument Co., Ltd., PPG Coatings (Tianjin) Co., Ltd., Beijing double relaxation with Dakota
Technology Development Co., Ltd., Beijing Oriental pass test Technology Co., Ltd.
The main drafters of this standard. Yang Zhong, Zheng Zhifeng, Wang Junfeng, Zhang Heng, Peng Rui, Chen Zhiyong, Sun Meiru, Zhang Hailin, Hao Jiayang, Xu Chaoyang,
Sun Xinglei, Leng Hao, Sun Xuedong, Zhang Xunya, Zhang Mao Mao, Pang Xiaoyu.
Surface aging grade and evaluation method of outdoor wood finishing
1 Scope
This standard specifies the terms and definitions of outdoor aging of wood, and the aging grade and evaluation method.
This standard is applicable to the evaluation of the aging properties of outdoor wood finish, including natural aging and artificial aging.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Textiles - Tests for color fastness - Evaluation of gray - like cards for discoloration GB/T
GB/T 4893.6-2013 Furniture surface film physical and chemical properties test Part 6. gloss determination method
Test method for physical and chemical properties of wood - based panels and decorative panels
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Discoloration of the discolorationoffilm
The color of the paint film deviates from its initial color due to the influence of the climate and environment, including fading, darkening, yellowing, bleaching, whitening and so on.
3.2
Lost light lossofgloss
The gloss of the paint film is reduced by the influence of the climate and environment.
3.3
Cracking
The appearance of cracks in the paint film caused by surface aging.
3.4
Peeling peeling
One or more of the coating is separated from its lower coating, or the coating is completely separated from the substrate.
3.5
Powder chalking
The surface of the paint film due to its degradation of one or more of the paint base and the decomposition of the pigment, showing the phenomenon of loose adhesion of fine powder.
3.6
Mildew-growing
In the hot and humid environment, the surface of the film to produce a variety of mold phenomenon.
3.7
Decorative coating
Mainly decorative effect of the coating.
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