Fluorocarbon coatings on architectural aluminum extrusions and panels
Some standard content:
ICS 25. 220. 99
Construction Industry Standard of the People's Republic of China JG/T 133
Fluorocarbon coatings on architecturalaluminum extrusions and panels Issued on December 13, 2000
Issued by the Ministry of Construction of the People's Republic of China
Implemented on May 1, 2001
JG/T133—2000
The technical indicators of this standard are equivalent to those of AAMA2605—1998 Specification for High Performance Organic Coatings on Lead Profiles and Lead Sheets for Buildings
The main differences between this standard and AAMA2605—1998 are as follows: 1. In AAMA2605—1998, the color difference is determined visually at a distance of 3m. From the practical point of view, it is easier to determine the color difference at a distance of more than 10m, so it is changed to 10㎡. When the coating is a single-color paint, it is more convenient and intuitive to use a computer colorimeter. Therefore, a computer colorimeter is added for the determination of single-color color difference.
2-In the impact resistance test, the provisions of AAMA 2605--1998 are unclear. Combined with GB/T 1732, the impact force is stipulated to be 50 kg·cm, so that the test conditions are unified and the results are comparable. 3. The sealing material should meet the requirements of JGJ102. Before use, the structural adhesive and weather-resistant adhesive must be tested for compatibility and adhesion with the coating they are in contact with, and a test report must be submitted. Construction can only be carried out after passing the test. 4+The test standards of AAMA26051998 are mostly ASTM standards. Because most of my country's national standards are equivalent to relevant international (ISO) standards, for the convenience of operation, all test methods are in accordance with national standards. Appendix A of this standard is the appendix of the standard. This standard is proposed by the Standard and Quota Research Institute of the Ministry of Construction. This standard is under the jurisdiction of the Technical Committee for Standardization of Building Products and Components of the Ministry of Construction. The drafting units of this standard are: China Construction Metal Structure Association, Xi'an Aircraft Industry Corporation Metal Hanging Board Factory. The participating drafting units of the water standard promotion are: Wuhan Lingyun Building Decoration Engineering Corporation, Shenzhen Fangda Yide New Materials Co., Ltd., Nanhai Pan Asia Metal Spraying Co., Ltd., Nanhai Jinhui Aluminum Curtain Wall Spraying Co., Ltd., Shenzhen AVIC Curtain Co., Ltd. The main drafters of this standard are: Huang Qi, Deng Guanxin, Xiao Yongji, Wang Shengguo, Zeng Guanying, Kuang Dahui, Gu Chunlai. This standard is entrusted to the China Building Standard Design Institute for interpretation. 1 Scope
Construction Industry Standard of the People's Republic of China Fluorocarbon Coatings on Architectural Aluminum Extrusions and Panels
Fluorocarbon coatings on architecturalaluminum extrusions and panels JG/T 133-2000
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of architectural aluminum extrusions and panels.
This standard is applicable to architectural aluminum extrusions and panels with carbon coatings using fluorocarbon spraying technology. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest versions of the following standards: GB178-1977 (confirmed in 1989) Standard sand for cement strength test GB/T 1732-1993 Determination of membrane impact resistance GB/T1740-1979 (confirmed in 1989) Determination of moisture and heat resistance of paint films GB/T 1766-1995 Rating method for aging of paints and lacquer coatings GB/T 1771-1991 Determination of neutral salt spray resistance of paints and varnishes GB/T 2828—19871
Batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches)GB/T3199·1996Packaging, marking, transportation and storage of aluminum and aluminum alloy processed productsGB/T4957—1985Eddy current method for measuring the thickness of non-conductive coatings on non-magnetic metal substratesGB/T6739—1996Determination of coating hardness by pencil methodGB/T 9276-1996
Test method for natural weather dew exposure of coatings
Cross-cut test for paint and varnish films
GB/T 9286--1998
GB/T 9754—1988
GB/T 9761—1988
GB/T 9792-1988
Measurement of specular gloss at 20°, 60° and 85° of paint films without metallic pigments Paints and varnishes
Color comparison
Conversion films on metal materials Determination of film mass per unit area Gravimetric method
GB/116259—1996 Test method for accelerated color aging of colored building materials by artificial climate JC/T480—1992 Building quicklime powder
3 Definitions
This standard adopts the following definitions.
3.1 Fluorocarbon coating refers to an organic coating containing more than 70% (resin mass ratio) of polyvinylidene fluoride or other fluorocarbon resins with equivalent performance. 3.2 Film or coating Film, coating
Refers to the dry film of cured fluorocarbon paint on the metal substrate, which can also be called coating. Approved by the Ministry of Construction of the People's Republic of China on December 13, 2000, and implemented on May 1, 2001
3.3 Visible surface
jExpused surface
refers to the surface that can still be seen after the paint product is installed. 3.4 Dry film
refers to the fully cured paint film,
4 Requirements
4.1 Appearance
JG/T 133-2000
4.1.1 When the coating surface is viewed vertically from a distance of 3m under natural light, the coating should be free of flow, cracks, bubbles, light debris or other surface defects.
4.1.2 For minor scratches on the coating surface, fluorocarbon paint of room temperature curing system is used for repair; the color and gloss of the repaired coating should be consistent with the original coating.
4.2 Thickness
4.2.1 When the dry film thickness is measured by a digital coating tester according to the method of GB/T 4957, for two-layer coating, the minimum local film thickness of the total dry film thickness shall not be less than 25 μm; for three-layer coating, the minimum local film thickness in the total film thickness shall not be less than 35 μm, or less than 85% of the specified thickness value. For multi-layer coatings containing primers, the primer thickness is 7.5.μm ± 2.5μm, the topcoat (i.e. color paint) thickness is not less than 25 μm, and the varnish thickness is 10~20 μm. 4.2.2 Due to the limitations of processing equipment and the complexity of parts (such as inner corners, inner grooves, flanges of plates, etc.), the film thickness of these parts is allowed to be lower than the specified value, but leaking parts are not allowed. 4.3 Pre-treatment
4.3.1 The purpose of surface pre-treatment is to remove the oil and dirt on the surface of the hanging board or profile, and remove the loose oxide layer naturally formed on the aluminum substrate, so as to form a tight chemical conversion film that is firmly bonded to the lead base and can be firmly bonded to the oxygen magnet. 4.3.2 The chemical conversion film on the aluminum substrate can be a non-crystalline chromium phosphate or chromate. 4.3.3 The film weight of the chemical conversion film is not less than 431 mg per square meter: specifically according to the GI3/T9792 method. 4.3.4 The pre-treatment process should be analyzed and controlled regularly to obtain a stable and qualified chemical conversion film. 4.4 Performance
requirements should comply with the provisions of Table 1.
Table 1 Performance Requirements Data Sheet
Average coating thickness
Guangyang 60
Pencil hardness
Adhesion, Grade
Impact resistance
Abrasion resistance
Chemical resistance
Hydrochloric acid resistance
Nitric acid resistance
Mortar resistance
Detergent resistance
Auxiliary corrosion
Salt spray resistance
Technical requirements
Two-way 230 μm, two-way 240 m
Visual inspection is particularly obvious color difference or single color coating is tested with computer colorimeter △E≤,2 NBS specified value soil 5
Cross-cut method ○ grade
50kgcm, no paint peeling
5 L/μm
15 min dripping, no bubbles, no change in appearance, color change does not exceed E≤6NBS
no change
no bubbles, no paint film falling off
4 0co h. Level 2 or above
4 C00 h,Grade 2 or above
Weather resistance
Artificial aging resistance
5 Test methods
5.1 Test specimen
Gloss retention
Film thickness lossbzxZ.net
Chalking grade, grade
Gloss loss grade, grade
JG/T133—2000
Table 1 (end)
10 years later
10 years later
10 years later
10 years later
2000h later
2000h later
Technical requirements
AESSNBS
GB/T 1766, Grade 1
Retention rate ≥50%
AE≤3NBS
Not inferior to Grade 2
Unless otherwise specified, the test temperature is 20℃:±5℃. The sample should be placed for at least 24 hours after the coating is cured before testing. The sample should be pure aluminum plate, state H14 or H24, the same process method, the same coating, and made on the same production line. There are at least 12 samples, with a size of 75 mm×150mm×1mm. 5.2 Coating film thickness
refers to the total thickness of the coating. The measurement is in accordance with the provisions of CB/T 1957. The test results should meet the requirements of Table 1. 5.3 Color difference
According to GB/T9761, visually inspect the color uniformity of the test piece or product under non-self-radiated natural light or uniform light source. The visual inspection distance is 101Ⅲ. When arbitrating the color difference of a single color, a computer colorimeter can be used for detection. 5.4 Gloss
Measure the gloss of the sample with a 60° photometer, and the measurement method is in accordance with GB/T9754. At least 10 readings should be taken, and the average value should be calculated. The gloss brightness level is selected by the user. The gloss difference of the same batch of products should not exceed ±5 units. The reference value of the standard gloss range is:
5.5 Pencil hardness (T film hardness)
Gloss value range
Above 80
20 to 80
Below 20
Use a set of Zhonghua brand high-grade hardness test special pencils with a minimum hardness of HB grade, with 3.5~6mm pencil lead exposed at the end, and grind the lead 90° with sandpaper. Push forward 6mm at 15° with the grinding layer (it is better to keep the lead). It is specifically in accordance with GB/T6739. 5.6 Coating Adhesion
5.6.1 Dry Adhesion
Coating adhesion is measured according to GB/T9286, spacing 1mm. Tape width 25mm, adhesive strength (10+1)N/25mm. 5.6.2 Wet Adhesion
Draw a grid on the test plate according to 5.6.1, soak the sample in distilled water or deionized water at 38℃±5℃ for 24h, take out and dry the sample, and immediately conduct adhesion test according to GB/T9286 within 5min. 5.6.3 Boiling Water Adhesion Test
After drawing a grid according to 5.6.1, boil the sample in steamed water or deionized water at ≥95℃ for 20min. During the test, keep the water boiling, take out the sample immediately and dry it, and conduct adhesion test according to GB/T9286 within 5min. 5.7 Impact resistance
JG/T 133—2000
5.7.1 The product shall be used for the test directly. A punch with a diameter of 16 mm shall be used, and the positive punching force shall be sufficient to make the punching depth 2.5 mm ± 0.25 mm, as specified in GB/T1732. 5.7.2 When the test cannot be carried out on the product, it may be carried out on the sample prepared in accordance with Chapter 5. The weight is 1 kg, the punch diameter is 16 mm, and the test plate is impacted directly by free fall from a height of 50 mm, as specified in GB/T1732. 5.8 Abrasion resistance
Use standard sand that meets the requirements of GB178 standard and drop it onto the coating of the plate from the specified height through the conduit. Keep adding sand until the coating is worn off and an aluminum plate with a diameter of about 4mm is exposed. Calculate the amount of standard sand (in liters) used to wear off 1 μm of coating thickness as the abrasion resistance of the coating, see Appendix A (Standard Appendix). 5.9 Chemical resistance
5.9.1 Hydrochloric acid resistance
Use distilled water to prepare a 10% (volume ratio) hydrochloric acid solution (use 37% industrial grade hydrochloric acid): drop 10 drops of the solution on the paint film and cover it with an observation glass, facing 1. After 15 minutes, remove the glass and rinse it with tap water. After drying, check it. 5.9.2 Nitric Acid Resistance
Pour 100mL of analytical pure nitric acid (60% to 68% concentration) into a large-mouthed bottle with a capacity of 200 to 250ml. Cover the test plate with the bottle mouth, keep the paint film under the paint for 30 minutes, rinse it clean and wipe it dry, and observe the color change immediately after leaving it for 1 hour. Compare the color of the acid-exposed and unexposed surface coatings and measure the color with a colorimeter.
5.9.3 Mortar Resistance
Mix 75g of building quicklime powder that meets JC/T480 and standard fine sand in a ratio of 1:3, filter it with a 10-mesh filter, add appropriate water to make mortar and apply it on the paint film surface. Apply it to a size of 50mm×25mm and a thickness of about 13mm. Place the sample in an environment with a relative coagulation of 95%±5% at 38°C for 24 hours. After: remove the mortar and wipe off the ash with a damp cloth. The residual ash that cannot be removed can be removed with the 10% hydrochloric acid solution in Section 5.9.1. After drying, check the appearance by yourself. 5.9.4 Detergent resistance
Soak the test pieces (at least 2 pieces) in a solution containing 3% (mass ratio) detergent at 38℃±3℃ for 72h. The detergent composition is shown in Table 2. Take out, rinse with tap water and wipe dry. Immediately stick the high-viscosity self-adhesive tape (width 20 mm) specified in 5.6.1 mm), press and remove the air bubbles in the cavity of the tape, stick the tape to the top along the length of the sample, and tear it off quickly at 90° with the sample. Table 2 Detergent composition
Industrial grade reagent
Tetrasodium pyrophosphate
Sodium sulfate anhydrous
Sodium alkylarylsulfonate
Hydrated sodium silicate
Sodium carbonate anhydrous
5. 10 Corrosion resistance
5. 10. 1 Moisture resistance
Original English name
Tetrasodium pyrophosphate
Sodium sulphate anhydrous
Sodium alkylarylsulfonate
Sodium metasilicate: hydratedSodium carbonate anhydrous
mass percentage
The sample is placed in a temperature and humidity control box at a temperature of 38℃±2℃ and a relative humidity of 98%2% for 4000h. The specific operation shall be carried out in accordance with GB/T1740.
5.10, 1.1 Except that obvious color change is not allowed, the result shall meet the GB/T1740 second-level judgment standard or above. GB/T1740 Secondary Assessment Standard: (Destruction Degree) No obvious change
Surface area of ultra-fine bubbles (only visible to naked eyes) less than 50%4
JG/T 133-2000
Local small bubbles (visible to naked eyes with diameter less than 0.5 HI1) area less than 4% Medium bubbles (diameter 0.6~1 mm) area less than 1% Rust spot diameter less than 0.5 mm
No peeling of paint film
5.10.2 Salt spray resistance
The test is carried out in accordance with GB/T 1771, using 5% salt water solution, placed in a salt spray box for 400 h, and shall meet the GB/T 174 Secondary Assessment Standard, performance requirements and 5.10.1.1 --Consistent. 5.11 Weathering resistance
The test samples are tested in accordance with GB/T9276 at the Hainan National Exposure Test Site or in areas with equivalent climate and environment. The test samples are facing south and placed at a 45° angle. The test time is 10 years.
5.11.1 Discoloration
When the sample is exposed for 10 years in accordance with GB/T9276, the discoloration of the sample with a △E of no more than 5NBS compared with the original color is qualified. It can be directly measured with a computer colorimeter and the average value of 10 points is taken. The measurement method is: after exposure, the sample is removed from the surface with clean water and a wet cloth, and then the color change is measured. At the same time, the same batch of unexposed samples are measured as a benchmark: compare the color difference between the two. When cleaning the sample, rinse it gently with water to remove the accumulated dust. It is not allowed to rub or polish vigorously to avoid the removal of powdered materials. 5.11.2 Powdering
According to 5.11 After exposure, the powdering rate of the sample surface shall not exceed the first-level standard in Table 3 of GB/T1766-1995. The test piece can only be gently rinsed with water to remove the dust. It is not allowed to wipe or polish vigorously. It should meet the evaluation standard of Table 3 of GB/T1766-1995: First level - shake the sample surface vigorously, and a small amount of pigment particles are stained with fingers. 5.11.3 Loss of gloss
After exposure according to 5.11, rinse the sample gently with water to remove the dust. It is not allowed to wipe or polish vigorously: Then measure the gloss according to 5.3. The relative gloss retention rate is required to be greater than 50%, expressed as follows: Gloss retention rate % =
5.11.4 Corrosion resistance
60" gloss after exposure
×100%
60° gloss before exposure
Measure the dry film thickness of the sample after exposure according to 5.11 with a digital measuring instrument and compare it with the dry film thickness before exposure. It is also possible to expose half of a test plate and protect the other half. The film thickness loss of the two should be less than 10%, and the film thickness loss percentage is calculated as follows: Film thickness loss = 100% -
5.12 Artificial aging test of coating
Thickness after exposure
×100%
Thickness before exposure
The artificial aging test is carried out in accordance with the provisions of GB/T 16259, and the aging time is 2 000 h, the cumulative total radiation is not less than 6000MJ/m, the blackboard brightness is 55±3℃, and the relative humidity is 65%±5%. The evaluation of the aging performance of the coating shall be rated in accordance with the provisions of GB/T1766. 6 Inspection rules
6.1 Inspection categories
It is divided into factory inspection and type inspection.
6.2 Factory inspection
6.2.1 The surface quality of the coating shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the requirements of this standard (or the order contract), and fill in the quality guarantee.
6.2.2 The purchaser shall accept the received products in accordance with the provisions of this standard. If the inspection results do not meet the requirements of this standard (or the order contract), it may The objection can be raised to the supplier in written form and resolved through negotiation between the supplier and the buyer. Objections to appearance quality should be raised within 5 months from the date of receipt of the product. Objections to other performance can be raised within 3 months from the date of receipt of the product. 6.2.3 Inspection items Before each batch of products leaves the factory, the appearance quality, coating thickness, color difference, gloss deviation, pencil hardness, coating adhesion, impact resistance, and hydrochloric acid resistance should be inspected. tt||6.2.4 Sampling
Non-destructive tests should be carried out on products, and destructive tests should be carried out on product margins or on samples prepared in accordance with Chapter 5. The appearance quality and color difference of the coating should be 100% inspected, and the inspection of other properties should be carried out according to the normal sampling plan specified in GB/T2828 with special inspection level S-1 and qualified quality level AQL of 6.5. Table 3 lists the sizes of different batch ranges and the number of unqualified products allowed. If the purchaser requires inspection level and qualified When the quality level is different, it shall be indicated in the contract. Table 3 Size of different batches and the number of unqualified products allowed Batch range
51--500
501~3500
6.3 Type inspection
6.3.1 Type inspection shall be carried out in any of the following cases: a) Trial design inspection of new products or old products transferred to the factory. Sample size
b) After formal production, whenever there are major changes in structure, materials, and processes that may affect product performance. c) Once a year during normal production,
d) When the product is resumed after a long period of suspension. e) When the factory inspection results are significantly different from the last type inspection. f) When the national quality supervision agency proposes type inspection requirements, 6.3.2 Type inspection items
Type inspection items shall include all technical requirements specified in 4.4 of this standard. 6.3.3 For wear resistance, mortar resistance, and artificial aging resistance, routine type tests are conducted every 2 years. 6.4 Qualification determination
6.4.1 If the coating appearance quality, color, and color difference are not up to standard, the single piece shall be deemed unqualified. 6.4.2 The determination of the test results of other properties shall be carried out in accordance with the corresponding provisions in Table 3 of 6.2.4. Number of pieces and roots
Number of unqualified items allowed
6.4.3 If any of the physical property tests fails, double the number of samples from the batch of products shall be taken for repeated testing; if they pass, the item shall be deemed qualified, otherwise the item shall be deemed unqualified. 7 Marking, packaging, transportation, and storage
7.1 Marking
7.1.1 The qualified products shall be labeled, stamped, or certified with the following marks: supplier's factory name and address, trademark, product mark (or drawing number), coating color number, batch number, and production date. 7.1.2 The packaging box should have obvious words and signs such as "Handle with care" and "Ask" in accordance with the provisions of GB/T3199. 7.2 Packaging
7.2.1 The coated surface of the product should be covered with a protective film. 7.2.2 For boards, thick cardboard or soft foam plastic should be placed between the coated surfaces and the two pieces should be fixed with tape. 7.2.3 When the product is packed, the surrounding area should be filled with semi-hard materials such as hard foam or wooden strips to prevent movement during transportation. 7.2.4 The packaging box should have sufficient strength and appropriate size and weight to ensure that it will not be damaged during transportation, handling and stacking, and the product will not move or squeeze in the box.
JG/T133—2000
7.2.5 The packaging box should have a product certificate and packing list. 7.2.5.1 Certificate of Conformity The following contents should be included: a) Name of manufacturer.
b) Product name, drawing number, color.
c) Product specifications.
d) Production batch number.
e) Inspection results and inspection department seal.
7.2.5.2 The following contents should be included in the packing list
a) Name of manufacturer.
b) Product name, drawing number, color.
c) Production batch number.
d) Number of product covers.
e) Packing date.
7.3 Transportation
Handle with care during transportation and do not drop or throw. 7.4 Storage
Products should be stored in a dry and ventilated place, and stacked separately according to type, specification, drawing number, and color, and prevent scratches or deformation on the surface. A1 Method Introduction
JG/T 133-- 2000
Appendix A
(Appendix to the standard)
Test method for wear resistance
The test of the wear resistance of the coating is carried out by the falling sand method. Standard sand that meets GB178 is used to drop from a specified height onto the coating plate through a conduit, and sand is continuously added until an aluminum plate of a certain size is exposed. The amount of standard sand (I.) used to grind off 1μm of coating thickness is used as the wear resistance of the coating.
A2 Instrument requirements
The schematic diagram of the instrument structure is shown in Figure A1. The conduit is placed vertically and steadily, with an inner diameter of 19 mm and a length of 914 mm. The distance from the pipe mouth to the closest point of the coating plate is 25 mm, and the coating plate is at a 45° angle to the guide. 203
Inner diameter)
A3 Sand treatment
Schematic diagram of the structure of the wear resistance test instrument
Before the test, the sand should be dried in a drying oven at 80° for at least 4 l, and then cool to room temperature with the furnace before testing. A4 Test method
A4. T Draw three 25 mm circular areas on each coated plate, measure the coating thickness at least three times in each area according to GB/T 4957, and take the average value as the coating thickness.
JG/T 133- 2000
A4.2 Place the sample on the wear resistance tester, and adjust the sample so that the center of one of the circular areas on the plate is just below the guide tube. Pour standard sand and impact the sample through the guide tube. The sand flow rate should be controlled at (7±0.5) 1/min, and keep adding standard sand until the surface coating is worn off and the aluminum plate with a diameter of 4 mm is exposed. A4.3 Wear the remaining two areas on the sample in turn. A5 Calculation
Abrasion resistance is calculated according to formula (A1)
Where: A——Abrasion resistance, l./μm
Amount of standard sand used for abrasion, L
TCoating thickness, m
The test results are expressed as the average of nine abrasion resistances of three specimens, accurate to 0.1 L/μm. .(A1)
Construction Industry of the People's Republic of China
Industry Standard
Aluminum Profiles and Lead Sheets for Construction Fluorocarbon Coating
JG/T 133—200C
Published by China Standards Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by Qinquandao Printing Factory of China Standards Press Distributed by Beijing Distribution Office of Xinhua Bookstore Sold by Xinhua Bookstores in various places*
Book Size 88(×12301/16 Printing Sheet 1 Words 19,000 Words 20[01 May First Edition 2001 First Qin Printing in May, print run 1-1500
Book number: 15566·2-13673 Price: 10.00 yuan Website: bzchs.com
Ke Zi 568-890
Copyright reserved
Infringements must be investigated
Report phone: (010)68533533
ttt J/O1
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.