JB/T 10359-2002 Environmental technical requirements for plastics used in outdoor units of air conditioners
Some standard content:
ICS29.035.20
Machinery Industry Standard of the People's Republic of China
JH/T 103592002
Environmental technical requirements of thc plastiesfor ihe outdoor units of air conditioners2002-07-16Promulgated
2002-12-01Implementation
Promulgated by the State Economic and Trade Commission of the People's Republic of ChinaForeword
Normative references
Technical requirements
Test methods and test items
Test and inspection equipment and requirements
Test sample preparation,
Pretreatment and test cases
Environmental test
Performance test
Low temperature test
Testing rules
JB/T 10a592002
JB/r103592002
This standard was proposed by China Machinery Industry Federation. This standard is under the jurisdiction of Guangzhou Electric Science Research Institute. Foreword
This standard was drafted by Guangzhou Electric Science Research Institute, Guangdong Institute of Deju Sailong Engineering Plastics Co., Ltd., 1 Haijie Zhongjie New Materials Co., Ltd., Guangzhou Jinfa Technology Development Co., Ltd., Guangdong Midea Air Machinery Manufacturing Co., Ltd., Guangdong Kebi Air Conditioner Co., Ltd., Zhuhai Gree Electric Appliances Co., Ltd., Jiangsu Shoulan Electric Co., Ltd. The main drafters are: Hao Yuanzeng, Chen Shuidong, Zhang Zhenguang, Chang Sen, Yang Xiaoyuan, Li Fei, Cai. Introduction
TET103592002
Standard According to the home appliance industry, the State Machinery Industry [Document No. 20001414 on Issuing the 2000 Machinery Industry Standard Formulation and Revision Project Plan, and the number 20463901 issued the "Environmental Technical Requirements for Plastics for Outdoor Air Conditioners" (Note: the name should be "Environmental Technical Requirements") industry standard formulation task to carry out the work of plastics due to its advantages of no water absorption, light weight, easy molding, high production efficiency, etc., in the demand for high-quality products and household electrical appliances. Recently, the air conditioner outdoor unit casing and other structural parts have also begun to use reinforced polymer materials such as the inner end to replace the gold mesh structural parts, and plastic is a polymer material, which is easily affected by the external environment. In environments such as sunlight and rain, plastics age due to the effects of cold. In low temperature environments, hydrogen generates cold energy. Therefore, it is urgent to formulate standards for the environmental technical requirements of plastics used in air-conditioning outdoor units, to put forward the technical requirements, test methods and evaluation basis for evaluating such weather-resistant materials, and to provide a common test standard for material manufacturers and product manufacturers to ensure the viability of high-performance materials such as plastics in research and development. This standard is based on years of research and development, and is combined with the collected plastic performance research data, the use of plastics in products, and the analysis of the current status of weather-resistant plastics at home and abroad. It accumulates the largest amount of natural atmospheric exposure test data (including typical climates such as heat, sub-humid heat, dry heat, and cold) and artificial simulation test data. This standard is applicable to the exposed plastic structural parts of the outdoor unit of the air conditioner, including the outer shell, front cover, front grille, air hood, rear cover, etc. 1 Scope
Environmental technical requirements for plastics used in outdoor units of air conditioners JIVT103592002bzxZ.net
This standard specifies the use requirements, test methods, inspection regulations and evaluation criteria for the durability of plastic components used in outdoor units of air conditioners. This standard is applicable to the exposed plastic structural parts of the outdoor unit of the air conditioner. 2 Normative references
The clauses in the following documents are the clauses of this standard through the use of the standard. For referenced documents dated as noted, all subsequent amendments (excluding expired content) or revisions are not applicable to this standard. However, it is encouraged to reach the standard. The parties to the cooperation shall study whether the latest versions of these documents can be used. For any undated referenced documents, the latest versions shall apply to this standard. GB 10.39-1992 General principles for test methods for plastic impact properties GB/11040-1992 General principles for test methods for plastic tensile properties GB/T 1843-1999 General principles for test methods for plastic beam impact (C9VISO1R:1993) GB/T 2423.1-2001 Environmental testing for electric and electronic products: Part 2: Test methods Test A: Low temperature (EC666-2-1:1990) Standard environment for conditioning and testing of plastic specimens (ID8029:1997) GET291RF9X GB/T 9341-2000 Test method for bending properties of plastics Determination of color change and property changes of plastics after exposure to light or natural climate 1.0 (CGB/T [5596—1995
[ISO4582:199]
Plastics laboratory light source exposure test method Part 2: Xenon lamp (idtIS04892-2:1991) GB/T16422.2—1999
Plastics laboratory light source exposure test method Part 3: Similar light I E0V1S04892-3:1994) GB16422.3—1997
(G month 17037 .1-1997 Preparation of injection molding specimens of thermoplastic materials Part 1: General principles and preparation of multi-purpose specimens and long strip specimens (50204: 1996)
3 Technical requirements
3.1 The surface of the plastic structural parts of the outdoor unit should be smooth, flat, without holes, obvious deformation, and unevenness, and the color should be uniform. 3.2 The actual installation size and appearance of the fuel structural parts of the outdoor unit should comply with the requirements of the product drawings, and should be used in normal operation under actual environmental conditions.
3.3 The plastic used for the outdoor unit should have certain mechanical properties, and its initial performance indicators should meet the requirements of Table 1.
Tensile strength MPa
Pregnant strength IPa
Purple strength m2
Performance requirements
3.4 The color of the plastic components of the outdoor unit should be prepared according to the user's requirements: it has good and fixed color. 3.5 The plastic sample for outdoor machinery (hereinafter referred to as the test rod) shall meet the following requirements after the artificial accelerated air model test in accordance with the provisions of 4.4.1 of this standard:
The surface of the sample shall not show blistering and cracking, and the powdering shall not exceed the medium change level: a)
JB/T10359—2002
b) The sample shall have good pre-performance and after aging test, the color change, that is, the color difference E≤6.0:) After the aging test of the sample, the tensile strength retention rate of the sample shall be 50%, and the retention rates of other performance indicators shall be as follows: Note: The performance retention rate is a measure of the performance value of the aging response data relative to the noise monitoring performance value. 3.6 Plastics and plastic structural parts for outdoor units should have certain low-temperature resistance. Plastic structural parts and test pieces should meet the following requirements after artificial low-temperature test according to the provisions of 4.4.2 of this standard: a) Plastics and plastic structural parts should have no cracks and obvious deformation b) After low-temperature test, the impact strength retention rate should not be less than 3.0kJ/m. 4 Test methods and test conditions
4.1 Test and testing equipment and requirements
Plastic material test and testing section is equipped with human climate (light water spray, UV condensation) accelerated test box, low-temperature test box, tensile testing machine, impact test device, colorimeter, etc. These equipment should be able to meet the requirements of the corresponding test standards. 42 Preparation of test products
Test samples are divided into standard test samples and component samples. The preparation of test samples is carried out in accordance with GBT17037.1-199. The test samples should not be subjected to excessive impact, extrusion or heat during processing. The surface of the test sample is smooth, flat, without shrinkage deformation, pores, cracks, delamination, obvious impurities and processing defects: 4.2.1 There are enough samples of each type. In each test, there should be no less than 6 groups of samples (5 pieces in each group): no less than 2 parts samples 4.2.2 Tensile test specimens: Prepare according to the "type test specimens" of GB/T10401992, bending test specimens: Prepare by hot setting of the standard specimens of GB/T9341-20MM 4.2.9
42.4 Impact test specimens: Prepare the test specimens according to GB/T1843-1996 cantilever beam impact test type A. 42.5 Color difference test specimens: Prepare the discs with a diameter of 100mm according to the test requirements: Parts samples: Injection molding according to the actual product samples. 4.2.6
Pretreatment and test conditions
4.3.1 Pretreatment conditions
Before the test, the sample should be pretreated for more than 24 hours in the following environmental conditions according to the requirements of G2918-1998: Temperature: 23℃±2℃:
b) Relative humidity, 45%~~5
c) Air pressure: 86kPu106kPa.
4.3.2 Test conditions
The mechanical properties test should be carried out under the following environmental conditions: Temperature: 232℃:
b) Relative humidity: 45%--75%:
c) Air pressure: 8kPa~-10kPa
4.4 Environmental test
The artificial climate accelerated aging test shall be carried out under the following two conditions. 4.4.1 Blood lamp/water spray test
The artificial gas reading xenon lamp test shall be carried out in accordance with the provisions of DB/T16422.2-1999. a) or lamp: the spectrum of xenon lamp is from short-wave ultraviolet region below 270mm, through visible and infrared region (the wavelength range of the light source is between 2nm and 89mm). As exposure test: the radiation of the xenon lamp should be filtered by a filter to reduce the ultraviolet short-wave radiation and remove the infrared radiation as much as possible, so that the light energy distribution received by the sample is close to the energy distribution of sunlight. The use and replacement of the lamp and the full light cover shall be carried out according to the requirements of the equipment manual or relevant regulations. b) Test conditions: the radiation intensity is 0.5Wfm when the wavelength of the light source spectrum is 340mm, the blackboard temperature is 65℃±3℃, and the relative humidity is (65±5)%. During the test, continuous light is used: 2
JB/T103592002
The test box uses deionized water and the water spraying cycle is 1Bmiamin (water spraying time is not water spraying time). The test duration is 2500h
4.42 UV lamp cold face test
Fluorescent UV lamp/condensation test is carried out according to the conditions specified in B/T16422.3-1999. a) Fluorescent UV lamp: Fluorescent UV lamp is a low-pressure UV lamp with a wavelength of 254mm. Due to the addition of phosphorus, it is converted into a longer wavelength: the distribution of the light of the fluorescent UV lamp depends on the emission spectrum of the coexisting substances and the diffusion of the glass tube: the wavelength of the fluorescent UV lamp used in the test is 280mm~315m: that is, within the UV-B wavelength range, the use and replacement of the UV lamp shall be carried out according to the standard. The effective life of the lamp is 1600h--T800h. After 400h--500h of illumination, each row of lamps needs to be replaced with a flame lamp. The lamp replacement is carried out in accordance with the standard provisions: 6 Test conditions: The test adopts illumination of 60℃, 8h, cold avoidance of 50%, 41 as a cycle, and the test adopts deionized water. The test duration is 2500h.
4.5 Performance test
4.5.1 Mechanical performance test
The mechanical performance test of plastics includes tensile strength, tensile elongation at break, flexural strength, and impact strength (cantilever beam). The test specimens shall be pre-treated under the conditions specified in 4.3.1 after sampling in the artificial simulated speed test. The test shall be carried out under the environment specified in 4.3.2 of this standard.
The tensile test of the specimen shall be carried out on a tensile testing machine according to the test method of GB/T1040-1992. The exit test of the test group shall be carried out on a tensile testing machine according to the test method of GB/T9341-2000. The end-of-stroke test of the test shall be carried out according to B/T1843-1996 The test method is carried out on an impact testing machine. 4.5.2 Appearance performance test
Measurement of color difference, use a damp cloth to gently rub the sample surface, under the cleaning conditions of 4.3.2, use a colorimeter to measure the color difference value at a location with a larger flat mountain on the sample (not less than F2000mE), and take the average value of three points: the light source used for the test is tested at a sharp angle.
Evaluation of initial ratio, cracking, etc.: According to GB/T155-1995, use the test method, and then evaluate whether there are any powdering, cysts, flaking, peeling, etc.
Evaluation of components: Observe whether the component samples have any cracks, deformation, or distortion after the test, and whether it affects their normal use after installation.
4.6 Low temperature test
To evaluate the low temperature resistance of plastics, a 25℃ test is conducted according to the temperature gradient method of GB2423.1-2001. After the plastic sample reaches the stable temperature in the test, it is kept for 48 hours. Under the same temperature conditions, the notch impact test is carried out to check its notch impact strength value. After the component sample reaches the stable temperature in the test, it is kept for 96 hours, and gradually returned to the room temperature to check its appearance changes. 5 Inspection and testing
5.1 The environmental test of this standard is used as a type test when the material product is designed and finalized. When the raw materials or formula of the material product are changed, the test needs to be carried out.
5.2 The water spray test specified in 4.4.1 is sufficient as the condition for the full test: the fluorescent lamp condensation test specified in 4.4.2 is used as the condition for the material quality inspection test: when the results of the two tests are significantly different, the light-on water spray test specified in 4.4.1 is used as the arbitration condition. 5.3 The quality inspection cycle shall be at least once every two years, and the samples shall be no less than three groups (five pieces in each group):6 Low temperature test
To evaluate the low temperature resistance of plastics, a 25℃ test is conducted according to the temperature gradient method of GB2423.1-2001. After the plastic sample reaches the stable temperature in the test, it is kept for 48 hours. Under the same temperature conditions, the notch impact test is carried out to check its notch impact strength value. After the component sample reaches the stable temperature in the test, it is kept for 96 hours, and gradually returned to the room temperature to check its appearance changes. 5 Inspection specifications
5.1 The environmental test of this standard is used as a type test when the material product is designed and finalized. When the raw materials or formula of the material product are changed, it is necessary to conduct the test.
5.2 The water spray test specified in 4.4.1 is sufficient as the condition for the full test: the fluorescent lamp condensation test specified in 4.4.2 is used as the condition for the material quality inspection test: when the results of the two tests are significantly different, the light water spray test specified in 4.4.1 is used as the arbitration condition. 5.3 The quality inspection cycle shall be at least once every two years, and the samples shall be no less than three groups (five pieces in each group):6 Low temperature test
To evaluate the low temperature resistance of plastics, a 25℃ test is conducted according to the temperature gradient method of GB2423.1-2001. After the plastic sample reaches the stable temperature in the test, it is kept for 48 hours. Under the same temperature conditions, the notch impact test is carried out to check its notch impact strength value. After the component sample reaches the stable temperature in the test, it is kept for 96 hours, and gradually returned to the room temperature to check its appearance changes. 5 Inspection specifications
5.1 The environmental test of this standard is used as a type test when the material product is designed and finalized. When the raw materials or formula of the material product are changed, it is necessary to conduct the test.
5.2 The water spray test specified in 4.4.1 is sufficient as the condition for the full test: the fluorescent lamp condensation test specified in 4.4.2 is used as the condition for the material quality inspection test: when the results of the two tests are significantly different, the light water spray test specified in 4.4.1 is used as the arbitration condition. 5.3 The quality inspection cycle shall be at least once every two years, and the samples shall be no less than three groups (five pieces in each group):
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