GB/T 23443-2024 Aluminium panels for building decoration
1 Scope
This document specifies the classification, code and designation, raw materials, requirements, test methods, inspection rules, marking, packaging, transportation, storage and accompanying documents of aluminium panels for building decoration.
This document is applicable to aluminium panel for indoor and outdoor decoration of buildings.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1732 Determination of impact resistance of coating films
GB/T 1740 Determination of resistance to heat and humidity of paint films
GB/T 1766 Paints and varnishes - Rating schemes of degradation of coats
GB/T 2480 Conventional abrasive - Silicon carbide
GB/T 3190 Chemical composition of wrought aluminium and aluminium alloys
GB/T 3880.1 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery
GB/T 3880.3 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 4957 Non-conductive coatings on non-magnetic basis metals - Measurement of coating thickness - Eddy current
GB/T 6388 Transport package shipping mark
GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 6739 Paints and varnishes - Determination of film hardness by pencil test
GB/T 8753.1 Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings - Part 1: Measurement of the loss of mass after immersion in acid solution(s)
GB/T 9286 Paints and varnishes - Cross-cut test
GB/T 9754 Paints and varnishes - Determination of specular gloss of non-metallic paint films at 20°, 60°and 85°
GB/T 9761 Paints and varnishes - Visual comparison of the colour of paints
GB/T 9780 Test method for dirt pickup resistance and stain removal of film of architectural coatings and paint
GB/T 10125 Corrosion tests in artificial atmospheres - Salt spray tests
GB/T 11186.2 Methods for measuring the colour of paint films - Part 2: Colour measurement
GB/T 11186.3 Methods for measuring the colour of paint films - Part 3: Calculation of colour differences
GB/T 13448-2019 Test methods for prepainted steel sheet and strip
GB/T 16259-2008 Test method for in accelerated weathering building materials
GB/T 16474 Designation system for wrought aluminium and aluminium alloy
GB/T 30794 Determination of polyvinylidene fluoride(PVDF) content of hot-melt fluorocarbon resin coatings (dry film) - Dropping of the melting temperature
JC/T 479 Building quicklime
JC/T 2229 Method for atmospheric corrosion tests on metal and metal-composite product on architecture
HG/T 3792-2014 Crosslinking fluorocarbon resin coatings
HG/T 6002 Fluorocarbon resin powder coatings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aluminium panel
single-layer board for building decoration, which is made of aluminum or aluminum alloy sheets (strips) as the substrate, processed and formed, and has protective and decorative coating, anodized film and coating film on the exposed surface
3.2
fluorocarbon coating
coating formed by curing liquid or powder paint mainly consisting of fluorocarbon resin on a metal surface
Note: Fluorocarbon resins include polyvinylidene fluoride thermoplastic fluororesin (PVDF for short) or chlorotrifluoroethylene-vinyl ether (ester) fluoroethylene vinyl ether (FEVE for short).
3.3
polyester coating
coating formed by curing liquid or powder paint mainly consisting of polyester resin on a metal surface
3.4
ceramic coating
coating formed by baking and curing inorganic paint produced from metal oxide sol and hydrolyzable metal alkoxide by chemical reaction
3.5
anodized film
oxide film formed on the surface of aluminum and aluminum alloy by anodizing treatment
4 Classification, code and designation
4.1 Classification and code
4.1.1 Classification by material of exposed surface:
a) Fluorocarbon, with the code of FC;
b) Polyester, with the code of PET;
c) Ceramic, with the code of CC;
d) Anodized film, with the code of AF.
4.1.2 Classification by processing technology of exposed surface:
a) Roller coating, with the code of GT;
b) Liquid coating, with the code of YPT;
c) Powder coating, with the code of FPT;
d) Anodic oxidation, with the code of YH;
e) Film, with the code of FM.
4.1.3 Classification by service environment:
a) Outdoor: with the code of W;
b) Indoor: with the code of N.
4.1.4 Classification by natural weather resistance:
a) Class I;
b) Class II;
c) Class III.
4.2 Designation
Aluminium panel shall be designated in the sequence of product name, service environment, exposed surface material, processing technology, substrate thickness, aluminum grade and standard number. Aluminum grade shall be designated according to the provisions of GB/T 16474.
Contents
1 Scope
2 Normative references
3 Terms and definitions
4 Classification, code and designation
5 Raw Materials
6 Requirements
7 Test methods
8 Inspection rules
9 Marking, packaging, transportation, storage and accompanying documents
Annex A (informative) Comparison of performance between aluminum-magnesium-silicon alloy plates and aluminum alloy plates of common grades
Annex B (informative) Typical infrared spectra of fluorocarbon resins
Annex C (Information) Reference scheme for layout of aluminum stiffeners
Annex D (Normative) Falling sand test method
Annex E (Informative) Protective film
Bibliography
