GB/T 5237.5: Evolution and historical versions
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Wrought aluminium alloy extruded profiles for architecture -- Part 5: Paint coating profiles
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[GB/T 5237.5-2008] Wrought aluminium alloy extruded profiles for architecture -- Part 5: PVDF coating profiles
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Wrought aluminium alloy extruded profiles for architecture -- Part 5: PVDF coating profiles
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Permeable sintered metal materials--Determination of fluid permeability
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PDF similar to GB/T 5237.5-2017
Basic data | Standard ID | GB/T 5237.5-2017 (GB/T5237.5-2017) | | Description (Translated English) | Wrought aluminium alloy extruded profiles for architecture -- Part 5: Paint coating profiles | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H61 | | Classification of International Standard | 77.150.10 | | Word Count Estimation | 20,263 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-07-01 | | Older Standard (superseded by this standard) | GB/T 5237.5-2008 | | Regulation (derived from) | National Standard Announcement 2017 No. 26 | | Issuing agency(ies) | General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 | GB/T 5237.5-2017: Wrought aluminium alloy extruded profiles for architecture -- Part 5: Paint coating profiles
---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.
Wrought aluminium alloy extruded profiles for architecture- Part 5. Paint coating profiles
ICS 77.150.10
H61
National Standards of People's Republic of China
Replace GB/T 5237.5-2008
Aluminum alloy building profiles
Part 5. Painting profiles
Part 5. Paintcoatingprofiles
Released on.2017-10-14
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Foreword
GB/T 5237 "Aluminum Alloy Building Profile" is divided into 6 parts.
--- Part 1. Substrate;
---Part 2. Anodized profiles;
---Part 3. Electrophoretic paint profiles;
---Part 4. Spray profiles;
---Part 5. Painting profiles;
--- Part 6. Thermal insulation profiles.
This part is the fifth part of GB/T 5237.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 5237.5-2008 "Aluminum Alloy Building Profiles Part 5. Fluorocarbon Paint Spray Profiles". This part and
Compared with GB 5237.5-2008, the main technical changes except editorial changes are as follows.
--- Modified the standard name (see cover, cover of the.2008 edition);
--- Deleted the statement in the preface that "this section 4.5.3.1, 4.5.5 is mandatory, and the remaining clauses are recommended" (see.2008 edition)
Preface)
--- Removed the preface "This section refers to AAMA2605-2005 "Aluminum extrusion materials and sheet metal properties of ultra-high performance organic coatings
Summation of the test method "to be revised" (see the preface to the.2008 edition);
--- Revised the applicable "scope" of this section (see Chapter 1, Chapter 1 of the.2008 edition);
--- Revised the directives for normative references (see Chapter 2, Chapter 2 of the.2008 edition);
--- Removed the normative reference document GB/T 228-2002 (see Chapters 2 and 5.2 of the.2008 edition);
--- Removed the normative reference document GB 5237.4-2008 (see Chapters 2 and 5.4.7 of the.2008 edition);
--- Removed the normative reference file GB/T 6461 (see Chapter 2 of the.2008 edition);
--- Removed the normative reference file GB/T 16585 (see Chapter 2 of the.2008 edition);
--- Removed the normative reference document GB/T 20975 (see Chapters 2 and 5.1 of the.2008 edition);
--- Removed the normative reference document JC/T 480 (see Chapters 2 and 5.4.10 of the.2008 edition);
--- Added normative reference document GB/T 5237.2 (see Chapters 2 and 7.3);
--- Added normative reference document GB/T 8005.3 (see Chapters 2 and 3);
--- Added normative reference document GB/T 14684 (see Chapter 2 and 5.4.11.1);
--- Added normative reference document GB/T 17671 (see Chapters 2 and 5.4.8);
--- Added normative reference document JC/T 479 (see Chapter 2 and 5.4.11.1);
--- Amend GB/T 1865-1997 in the normative reference document to GB/T 1865-2009 (see Chapter 2 and 5.4.16.1,
Chapter 2 of the.2008 edition and 5.4.15.1);
--- Amend the normative reference document GB/T 8013.3-2007 to a normative reference file without a chronological number (see Chapter 2,
4.6.17, 5.4.8, 5.4.17 and 6.4, Chapters 2, 3, 4.2, 4.5.16.1, 4.5.16.2 and 5.4.16) of the.2008 edition;
--- Revised guidelines for terms and definitions (see Chapter 3, Chapter 3 of the.2008 edition);
--- Revised the definition of "decorative surface" (see 3.1, 3.2 of the.2008 edition);
--- Removed the definitions of "paint film", "film thickness", "local film thickness", "minimum local film thickness" and "average film thickness" (see version 3.1 of.2008).
3.3, 3.4, 3.5 and 3.6);
---In the product classification, the "film layer type, film layer code, film layer composition, film layer characteristics and applicable environment of the corresponding profiles" were added.
Rong (see 4.1.2);
--- Revised the markup and example provisions in the product category (see 4.1.3, 4.1.2 of the.2008 edition);
--- Added "quality assurance" content (see 4.2);
--- Film performance project "color and color difference" was changed to "color difference" (see 4.6.3, 5.4.3 and 6,.2008 version 4.5.2, 5.4.2 and
Chapter 6);
--- Increased the boiling water resistance requirements and test method requirements (see 4.6.6 and 5.4.6);
--- Revised the requirements for solvent resistance and test requirements (see 4.6.112 and 5.4.12,.2008 editions 4.5.11 and 5.4.11);
--- Modify the heat and humidity resistance requirements to "the comprehensive damage level of the surface of the film should reach level 1" (see 4.6.15,.2008 edition)
4.5.14);
--- Revised the requirements for accelerated weathering and test method requirements (see 4.6.16.1 and 5.4.11,.2008 version 4.5.15.1 and
5.4.15.1);
--- Revised the requirements of natural weatherability and test method requirements (see 4.6.16.2 and 5.4.16.2,.2008 edition of 4.5.15.2 and
5.4.15.2);
--- Revised the test method requirements for chemical composition and mechanical properties (see 5.1 and 5.2,.2008 and 5.1 and 5.2);
--- Revised the test method requirements for film thickness (see 5.4.1, 5.4.3 of the.2008 edition);
--- Revised the tolerance requirements for weight quality in the impact resistance test method (see 5.4.7, 5.4.6 of the.2008 edition);
--- Revised the requirements of the test method for wear resistance (see 5.4.8, 5.4.7 of the.2008 edition);
---In the test method for hydrochloric acid resistance, "chemically pure hydrochloric acid" was changed to "analytically pure hydrochloric acid" (see 5.4.9, 5.4.8 of.2008 edition);
--- Revised the test temperature and humidity requirements in the nitrate resistance test method (see 5.4.10, 5.4.9 of the.2008 edition);
---In the mortar resistance test method, the lime powder was modified to the building quicklime specified in JC/T 479, and the standard sand was modified to
Standard sand specified in GB/T 14684 (see 5.4.11.1, 5.4.10 of.2008 edition);
---In the salt spray corrosion resistance test method, the requirement of "line width 1mm" is added (see 5.4.14);
--- Modified the group batch method (see 6.2,.2008 version 6.2);
--- Increase inspection classification (see 6.3);
--- Revised the provisions of the inspection project (see 6.4, 6.3 of the.2008 edition);
--- Revised the sampling regulations (see 6.5, 6.4 of the.2008 edition);
--- Revised the judgment requirements of the test results (see 6.6, 6.5 of the.2008 edition);
--- Revised the provisions of the logo (see 7.1.1, 7.1 of the.2008 edition);
--- Revised the content requirements of the quality certificate (see 7.4, 7.5 of the.2008 edition);
---Modified the content requirements of the order form (or contract) (see Chapter 8, Chapter 8 of the.2008 edition);
--- Added quality assurance content (see Appendix A);
--- Added references (see references).
This part was proposed by the China Nonferrous Metals Industry Association.
This part is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This section is responsible for drafting units. Guangdong Xingfa Aluminum Co., Ltd., Guangdong Feng Aluminum Co., Ltd., Nonferrous Metals Technology and Economic Research Institute,
Fujian Nanping Aluminum Industry Co., Ltd., Guangdong Jianmei Aluminum Profile Factory (Group) Co., Ltd., National Nonferrous Metals Quality Supervision and Inspection Center,
Guangdong Industrial Analysis and Testing Center, Guangya Aluminum Co., Ltd., Sichuan Samsung New Material Technology Co., Ltd., Fujian Minfa Aluminum Industry Co., Ltd.
Co., Ltd., Guangdong Xinhe Aluminum Industry Emerging Co., Ltd.
The main drafters of this section. Chen Wenzhao, Ge Lixin, Xia Xiuqun, Chen Hui, Feng Dongsheng, Dai Yuexing, Sun Fengxian, Zhan Hao, Pan Xuezhe, Wang Zheng,
Zhu Yaohui, Chao Xiaohui.
The previous versions of the standards replaced by this section are.
---GB/T 5237.5-2000, GB 5237.5-2004, GB 5237.5-2008.
Aluminum alloy building profiles
Part 5. Painting profiles
1 Scope
This part of GB/T 5237 specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation, and
Storage, quality certificate and order form (or contract) content.
This section applies to organic solvent-based or aqueous solvent-based polyvinylidene fluoride (PVDF) paint as a coating for the construction of electrostatic spray aluminum alloy
Hot extruded profiles (hereinafter referred to as profiles).
Other aluminum alloy processed materials with the same application and surface treatment methods can also be referred to in this section.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 1732 paint film impact resistance test
GB/T 1740 paint film moisture resistance test
GB/T 1766 Paint and varnish coating aging rating method
GB/T 1865-2009 Painted and varnish artificial weathering and artificial radiation exposure filtered xenon arc radiation
GB/T 3199 Aluminum and aluminum alloy processing products packaging, marking, transportation, storage
GB/T 4957 Non-conductive coating on non-magnetic base metal, thickness measurement of eddy current method
GB/T 5237.1 aluminium alloy building profiles - Part 1.
GB/T 5237.2 aluminium alloy building profiles - part 2. anodized profiles
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 6739 Paint and varnish pencil method for determination of film hardness
GB/T 8005.3 Aluminium and aluminium alloys - Part 3. Surface treatment
Aluminium and aluminium alloy anodized films and organic polymeric films - Part 3
GB/T 9276 coating natural weather exposure test method
GB/T 9286 color and varnish paint film cross-cut test
GB/T 9754 Determination of 20°, 60° and 85° specular gloss of paints and varnishes without metallic pigments
Visual colorimetric test of GB/T 9761 paint and varnish
GB/T 10125 artificial atmosphere corrosion test salt spray test
GB/T 11186.2 Measurement methods for colour of coatings - Part 2. colour measurement
GB/T 11186.3 Method of measurement of coating colours Part 3. Calculation of colour difference
GB/T 14684 construction sand
GB/T 17671 Cement mortar strength test method (ISO method)
JC/T 479 Building Lime
3 Terms and definitions
The following terms and definitions as defined in GB/T 8005.3 apply to this document.
3.1
Decorative surface exposedsurfaces
Profiles that are processed, assembled into articles and mounted on buildings, visually visible surfaces (including in an open or closed state).
4 requirements
4.1 Product Classification
4.1.1 Grade, Status and Size Specifications
The grade, condition and size specifications shall comply with the provisions of GB/T 5237.l.
4.1.2 Type of film layer, film layer code, film layer composition, film layer characteristics and applicable environment of corresponding profiles
The type of film layer, film layer code, film layer composition, film layer characteristics and applicable environment of the corresponding profiles are shown in Table 1.
Table 1 Type of film layer, film layer code, film layer composition, film layer characteristics and applicable environment of corresponding profiles
Membrane type film layer code a film layer composition characteristics and corresponding environment of the corresponding profile
Two coat LF2-25 primer plus topcoat
The second coating is generally a monochromatic or pearlescent mica scintillation effect film layer, which is not required
Additional varnish protection. The second coating is suitable for solar radiation and the atmosphere
Corrosive environment
Three-coat LF3-34 primer, topcoat and varnish
The three-coating is generally a metallic effect film in which the ball is used in the paint.
Grinding aluminum powder to obtain metal texture effect, the metal texture is different from the second coating
The layer of pearlescent mica film, because the aluminum powder is easy to oxidize or peel off, the surface of the film
Varnish protection is required to ensure the overall performance of the film. Metallic aluminum paint
Generally do not make two coatings. Three coatings are suitable for strong solar radiation and atmosphere
Corrosive environment
Four coat LF4-55 primer, barrier paint, top coat and varnish
The four-coat layer is generally a metal effect film layer with higher performance requirements, and the film layer
On the basis of the three-coat layer, a barrier film layer that blocks ultraviolet rays is added,
Improved UV resistance. The four coatings are suitable for strong solar radiation,
Extremely corrosive atmosphere
Note. The film characteristics, coating characteristics and requirements of primer, barrier paint, topcoat and varnish are shown in Table A.2.
a “LF” in the film designation indicates painting treatment, the first Arabic digit after “LF” indicates the type of film layer, and the Arabic number after “-” indicates the film layer.
The minimum local film thickness.
4.1.3 Tags and examples
Profile marking by product name, this part number, grade, status, section code and length, color (or color number), film order
Show. Examples of tags are as follows.
Example 1.
The paint color is 2345, the film type is four coat, 6063 grade, T5 state, the cross-section code is YST10002, the length is 4000mm, the paint profile, the standard
Recorded as.
Painting profile GB/T 5237.5-6063T5-YST10002×4000 color 2345LF4-55
Example 2.
The paint color is red, the film type is two coat, 6063 grade, T5 state, the cross-section code is YST10002, the length is 4000mm, the paint profile, the standard
Recorded as.
Painting profile GB/T 5237.5-6063T5-YST10002×4000 red LF2-25
4.2 Quality Assurance
4.2.1 Process
Process assurance see A.1.
4.2.2 Raw materials
Refer to A.2 for the quality of the substrate, pretreatment reagents and fluorocarbon paint.
4.3 Chemical composition
The chemical composition should meet the requirements of GB/T 5237.1.
4.4 Mechanical properties
Mechanical properties should meet the requirements of GB/T 5237.1.
4.5 Dimensional deviation
After the profile is removed, the dimensional deviation shall comply with the provisions of GB/T 5237.1. Dimensional changes caused by the film layer should not affect its
Assembly and use.
4.6 Film properties
4.6.1 Film thickness
4.6.1.1 The film thickness on the decorative surface shall comply with the requirements of Table 2.
Table 2 film thickness
Membrane type
Average film thickness
Mm
Local film thickness a
Mm
Two coats ≥ 30 ≥ 25
Three coatings ≥40 ≥34
Four coatings ≥65 ≥55
a Due to the complexity of the cross-sectional shape of the profile, the local film thickness on some surfaces of the profile (such as internal corners, grooves, etc.) is allowed to be lower than the values specified in Table 2, but not allowed
There is a phenomenon of exposure.
4.6.1.2 If the non-decorative surface requires film thickness, it shall be agreed between the supplier and the buyer and specified in the order form (or contract).
4.6.2 Gloss
The gloss value of the film shall be in accordance with the order form (or contract), with an allowable deviation of ±5 gloss units.
4.6.3 Color difference
The color of the film should be basically the same as the model agreed between the supplier and the buyer. The color difference between the monochromatic film and the sample when measured by the instrument method
ΔE*ab≤1.5, the color difference ΔE*ab≤1.5 between the profiles of the same batch (referred to as the delivery batch).
4.6.4 Hardness
After the pencil scratch test, the hardness of the film layer should be not less than 1H.
4.6.5 Adhesion
The dry adhesion, wet adhesion and boiling water adhesion of the film layer should reach level 0.
4.6.6 Resistance to boiling water
After the high-pressure water immersion test, the surface of the film layer should be free from falling off, wrinkling, foaming, loss of light, discoloration, etc., and the adhesion should reach 0.
4.6.7 Impact resistance
After the impact resistance test, the film layer is allowed to have micro cracks, but a sticky film layer is not allowed on the adhesive tape.
4.6.8 Abrasion resistance
After the falling sand test, the wear coefficient should be not less than 1.6L/μm.
4.6.9 Hydrochloric acid resistance
After the hydrochloric acid resistance test, there should be no bubbles or other significant changes on the surface of the film.
4.6.10 Resistance to nitric acid
After the nitric acid resistance test, the color difference value ΔE*ab ≤ 5.0 of the monochromatic film layer.
4.6.11 mortar resistance
After the mortar resistance test, the surface of the film layer should not fall off or other obvious changes.
4.6.12 Solvent resistance
After the solvent resistance test, the surface of the profile did not expose the substrate.
4.6.13 detergent resistance
After the detergent resistance test, there should be no blistering, shedding or other obvious changes on the surface of the film.
4.6.14 Salt spray corrosion resistance
After the salt spray corrosion test, the unilateral penetration corrosion width under the film on both sides of the scribe line shall not exceed 2.0 mm, and the sides of the scribe line shall be 2.0 mm apart.
Some of the layers should not be corroded.
4.6.15 Heat and humidity resistance
After the heat and humidity resistance test, the comprehensive damage level of the surface of the film layer should reach Grade 1.
4.6.16 Weather resistance
4.6.16.1 Accelerated weatherability
After the accelerated weathering test, the gloss retention of the film layer (the gloss value after the film layer test is relative to the gloss value before the test)
The ratio should be not less than 75%, the color difference value ΔE*ab≤3.0, and the chalking level reaches 0 level.
4.6.16.2 Natural weatherability
When the demand side has requirements for natural weatherability, it shall be agreed between the supplier and the buyer, and shall be indicated in the order form (or contract), and the film shall be naturally resistant for 10 years.
Membrane gloss retention rate after the test (can be set for different atmospheric corrosion test stations, but not less than 10 years)
(The percentage of the gloss value after the film test is relative to the gloss value before the test) should be not less than 50%; the color difference value ΔE*ab≤5.0; film thickness loss
The rate should be no more than 10%.
4.6.17 Other
When the demand side has requirements for other performances, the supplier and the buyer shall refer to GB/T 8013.3 for specific agreement and indicate in the order form (or contract).
4.7 Appearance quality
The film on the decorative surface of the profile shall be smooth and uniform, and no flow marks, wrinkles, bubbles, shedding and other defects affecting the use shall be permitted.
5 Test methods
5.1 Chemical composition
The chemical composition analysis method is carried out in accordance with the provisions of GB/T 5237.1. The film layer on the surface of the sample should be removed before the test.
5.2 Mechanical properties
The test method of mechanical properties is carried out in accordance with the provisions of GB/T 5237.1. The film layer on the surface of the sample should be removed before the test.
5.3 Dimensional deviation
The method for detecting the dimensional deviation is carried out in accordance with the provisions of GB/T 5237.1. The film layer on the surface of the sample should be removed before testing.
5.4 Film properties
5.4.1 Film thickness
According to the provisions of GB/T 4957, the average value of the five partial film thicknesses is recorded as the average film thickness of the film layer to be tested.
5.4.2 Gloss
According to the provisions of GB/T 9754, measured by 60° angle of incidence.
5.4.3 Color difference
5.4.3.1 Visual measurement
According to the provisions of GB/T 9761.
5.4.3.2 Instrumental assay
The arbitration test uses a color difference meter and is carried out in accordance with the provisions of GB/T 11186.2 and GB/T 11186.3.
5.4.4 Hardness
The pencil hardness test was carried out according to GB/T 6739, and the test results were evaluated according to the scratch of the surface film layer.
5.4.5 Adhesion
5.4.5.1 Dry adhesion
5.4.5.1.1 According to the provisions of GB/T 9286, the cross-cut spacing is 1mm.
5.4.5.1.2 Cover the adhesive tape 1) with an adhesive force greater than 10N/25mm on the cross-cut film layer, and press it to remove the air under the adhesive tape.
The adhesive tape is quickly pulled up at an angle perpendicular to the surface of the film and rated according to the provisions of GB/T 9286.
1) Scotch 610 adhesive tape or Permacel 99 adhesive tape is an example of a suitable commercial product. This information is given to facilitate the use of this section.
It does not imply endorsement of these products.
5.4.5.2 Wet adhesion
After the sample is cut according to the provisions of 5.4.5.1.1, it is placed in 38°C±5°C and immersed in the third grade water specified in GB/T 6682 for 24 hours.
The sample was wiped dry and tested and rated according to 5.4.5.1.2 within 5 min.
5.4.5.3 Boiling water adhesion
5.4.5.3.1 Cut the specimen according to the provisions of 5.4.5.1.1.
5.4.5.3.2 Inject the third-grade water specified in GB/T 6682 into the beaker to a depth of about 80mm, and put 2~3 pieces of clean broken in the beaker.
Porcelain piece. Heat at the bottom of the beaker until the water boils.
5.4.5.3.3 Suspend the sample in boiling water for 20 minutes. The sample should be below 10mm on the water surface, but should not touch the bottom of the container. In trial
Keep the water temperature not lower than 95 °C during the process, and add the third grade water specified in GB/T 6682 to the cup at any time to keep the water level high.
Less than 80mm.
5.4.5.3.4 Remove and dry the sample and test and rate it according to 5.4.5.1.2 within 5 minutes.
5.4.6 boiling water resistance
Inject three levels of water specified in GB/T 6682 to a depth of about 80 mm in a pressure cooker, and place a sample of about 50 mm length vertically in water.
Medium, the sample should be below 10mm on the water surface, but can not touch the bottom of the container, heated to a pressure of 0.1MPa ± 0.01MPa, and maintain a constant pressure
After 1 h, the sample was taken out and dried, and the surface layer change after the test was visually inspected, and the sample was taken within 5.4.5.1 within 5 min.
Adhesion test and rating.
5.4.7 Impact resistance
5.4.7.1 Preparation of standard test panels. select pure aluminum plates with a size of 150mm × 75mm × 1.0mm and the state is H24 or H14, same as the batch
The profiles were sprayed and cured on the same line using the same process and then placed for 24 h.
5.4.7.2 Using a punch with a diameter of 16mm ± 0.3mm, carry out the impact test according to the method specified in GB/T 1732. the hammer
(1000g±5g) directly placed on the surface of the film (positive punch) directly impacting the standard test plate at a suitable height, and the punching depth is 2.5mm±
0.3mm pit, immediately cover the surface of the film after the impact test with adhesive tape with adhesive force greater than 10N/25mm, press tightly to row
Remove the air under the adhesive tape, and then quickly pull up the adhesive tape at an angle perpendicular to the surface of the film to visually observe the change of the film in the pit and the periphery.
Happening.
5.4.8 Wear resistance
The falling sand test shall be carried out in accordance with the provisions of GB/T 8013.3. The abrasive shall comply with the standard sand specified in GB/T 17671.
5.4.9 Hydrochloric acid resistance
The hydrochloric acid test solution (1 9) was prepared by analyzing pure hydrochloric acid (ρ=1.19 g/mL) and the tertiary water specified in GB/T 6682. In the sample
10 drops of hydrochloric acid test solution was dripped on the surface of the film, covered with a watch glass, placed in an environment of 18 ° C ~ 27 ° C for 15 min, and then used
Wash and dry. The surface of the film after the test was visually inspected.
5.4.10 Resistance to nitric acid
Inject 100 mL of analytically pure nitric acid (ρ=1.40 g/mL) into a.200 mL jar and place the sample membrane layer down on the bottle mouth.
On the upper side, the sample was taken off after 30 minutes, rinsed with tap water and dried, and the surface of the film after the test was checked after being placed for 1 hour. Test at temperature
The degree is from 18 ° C to 27 ° C and the humidity is less than 50%.
5.4.11 mortar resistance
5.4.11.1 Take 75g of construction lime specified in JC/T 479 and 225g of construction sand speci...
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