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LY/T 3192-2020: Electric heating wooden floor with built-in heating layer
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Electric heating wooden floor with built-in heating layer
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LY/T 3192-2020
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Basic data | Standard ID | LY/T 3192-2020 (LY/T3192-2020) | | Description (Translated English) | Electric heating wooden floor with built-in heating layer | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B70 | | Classification of International Standard | 79.080 | | Word Count Estimation | 14,179 | | Date of Issue | 2020-03-30 | | Date of Implementation | 2020-10-01 | | Regulation (derived from) | Announcement No. 6 of 2020 by the State Forestry and Grassland Bureau | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 3192-2020: Electric heating wooden floor with built-in heating layer---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.
Electric heating wooden floor with built-in heating layer
ICS 79.080
B 70
LY
People's Republic of China Forestry Industry Standard
Built-in electric heating layer electric heating wooden floor
2020-03-30 released
2020-10-01 implementation
Issued by the State Forestry and Grassland Administration
Foreword
This standard is compiled in accordance with the rules given in GB/T 1.1-2009.
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This standard was proposed and managed by the National Wood-based Panel Standardization Technical Committee (SAC/TC 198).
Drafting organizations of this standard. Research Institute of Wood Industry, Chinese Academy of Forestry, Jiangsu Yitian Wood Industry Co., Ltd., National Infrared and
Industrial Electric Heating Product Quality Supervision and Inspection Center, Zhejiang Kanghui Wood Co., Ltd., China Household Electrical Appliances Research Institute, Guangxi University, Shanghai
Reli Technology Group Co., Ltd., Jiusheng Flooring Co., Ltd., Anhui Yangzi Flooring Co., Ltd., Guangxi Fenglin Wood Group Co., Ltd.
Co., Ltd., Sichuan Shengda Forestry Industry Co., Ltd., Jiangsu Kendia Wood Co., Ltd., Shanghai Oulian Electric Technology Co., Ltd.
Company, Beijing Biyan Special Material Co., Ltd., Zhejiang Dongri Nuanyang Electric Heating Technology Co., Ltd., Zhejiang Wohao Wood Technology Co., Ltd.,
Zhejiang Agriculture and Forestry University, Guangdong Yaodonghua Decoration Material Technology Co., Ltd., Jiangsu Keyuan Thermal Energy Technology Co., Ltd.
Drafters of this standard. Liang Shanqing, Fu Feng, Lu Bin, Chen Zhilin, Gao Jianzhong, Zeng Yu, Xu Zhengtao, Zhang Zhaoming, Yuan Quanping, Zhang
Yuming, Wang Yanwei, Lei Xiang, Wang Gaofeng, Yu Gang, Xu Jianhong, Wang Yong, Wang Xiaofei, Lu Shuigen, Lu Jiancheng, Sun Weisheng, Zeng Minhua,
Zhao Shuguo.
This standard was issued for the first time.
Built-in electric heating layer electric heating wooden floor
1 Scope
This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, signs,
Packaging, instructions for use, transportation and storage.
This standard applies to wooden floors with built-in electric heating layer for heating, and the rated voltage of its single-phase device does not exceed 250V.
The electric heating wooden floor with built-in electric heating layer specified in this standard must be designed, installed and used in accordance with relevant application technical specifications.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 4208-2008 Enclosure protection grade (IP code)
GB 4706.82-2007 Special requirements for soft sheet heating elements for safe room heating of household and similar electrical appliances
GB/T 7287-2008 Infrared radiant heater test method
GB 8702-2014 Electromagnetic environment control limits
GB/T 17657-2013 Test method for physical and chemical properties of wood-based panels and facing wood-based panels
GB/T 18102 impregnated paper laminated wood floor
GB/T 18103-2013 Solid wood composite floor
GB/T 18580 Formaldehyde emission of indoor decoration materials, artificial panels and their products
HJ/T 10.2-1996 Radiation Environmental Protection Management Guidelines Electromagnetic Radiation Monitoring Instruments and Methods
HJ/T 10.3-1996 Radiation Environmental Protection Management Guidelines Electromagnetic Radiation Environmental Impact Assessment Methods and Standards
JG/T 286-2010 Low temperature radiation electric heating film
LY/T 1700 Wooden floor for floor heating
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Heating layer
The flat heating layer encapsulated in the wooden floor, which can generate heat after being energized, and is composed of an electrical insulating material and a heating resistance material encapsulated in it
The flat heating element.
3.2
Built-in electric heating layer electric heating wooden floor
It is a wooden floor that is composed of a wooden base material and an electric heating layer encapsulated in it, which can generate heat after being energized.
3.3
Built-in electric heating layer electric heating solid wood composite floor
layer
The solid wood composite floor is encapsulated with an electric heating layer and can generate heat after being energized.
3.4
Built-in electric heating layer electric heating impregnated paper laminated wood floor
layer
An electric heating layer is encapsulated inside, and the impregnated paper laminated wood floor that can generate heat after being energized.
3.5
Power density
The power per unit area on the surface of the built-in electric heating layer electric heating wooden floor, in watts per square meter (W/m2).
3.6
Normal operation
When the built-in electric heating layer electric heating wooden floor is connected to the power source, it will work according to the normal conditions of use.
3.7
Working temperature
The built-in electric heating layer electric heating wooden floor works under the rated voltage and reaches the average surface temperature of the stable working state.
3.8
Stable working condition condition of adequate heated
The built-in electric heating layer electric heating wooden floor is energized and heated to reach a thermal equilibrium working state under normal working conditions.
3.9
Temperature rise time
The built-in electric heating layer electric heating wooden floor works under normal conditions, and its surface temperature rises from room temperature to 90% of the stable working temperature.
time needed.
3.10
Electric-to-radiant power transfer efficiency
The built-in electric heating layer electric heating wooden floor works under the rated voltage until it reaches a stable working state, and then converts the input electric power into output
The percentage of the total radiant flux output.
4 categories
Classified by product.
a) Built-in electric heating layer electric heating solid wood composite floor;
b) Built-in electric heating layer electric heating impregnated paper laminated wood floor.
5 requirements
5.1 Basic quality requirements
5.1.1 Appearance quality
5.1.1.1 The appearance quality of the built-in electric heating layer and electric heating solid wood composite floor shall meet the requirements of 5.3 of GB/T 18103-2013.
5.1.1.2 The appearance quality of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall meet the requirements of GB/T 18102.
5.1.1.3 The electric heating wooden floor with built-in electric heating layer shall include decorative layer, wood material layer, electric heating layer, electrode, power connector, and its electric
The thermal layer is built into the wood material.
5.1.1.4 The appearance quality of the electric heating layer shall meet the requirements of 5.1 of JG/T 286-2010, and its main structure shall include the layer of electric insulation material and the
Thermal resistance material layer.
5.1.2 Specifications and deviations
5.1.2.1 The specifications and deviations of the built-in electric heating layer electric heating solid wood composite floor shall meet the requirements of 5.4 in GB/T 18103-2013.
5.1.2.2 The specifications and deviations of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall meet the requirements of GB/T 18102.
5.1.2.3 The dimensional deviation of the electric heating layer shall meet the requirements of 5.2 in JG/T 286-2010.
5.1.3 Basic physical and chemical properties
5.1.3.1 The physical and chemical properties of the built-in electric heating layer electric heating solid wood composite floor shall meet the requirements of 5.5 in GB/T 18103-2013.
5.1.3.2 The physical and chemical properties of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall meet the requirements of GB/T 18102.
5.1.3.3 The electrical safety performance of the electric heating layer shall meet the requirements of JG/T 286-2010.
5.1.4 Heat-resistant dimensional stability
The heat-resistant dimensional stability of the electric heating wooden floor with built-in electric heating layer shall meet the requirements of LY/T 1700.
5.1.5 Moisture resistance dimensional stability
The moisture-resistant dimensional stability of the wooden floor with built-in electric heating layer and electric heating shall meet the requirements of LY/T 1700.
5.1.6 Surface moisture and heat resistance
The surface damp and heat resistance of the built-in electric heating layer electric heating wooden floor shall meet the requirements of LY/T 1700.
5.1.7 Surface crack resistance
The surface cracking resistance of the wooden floor with built-in electric heating layer and electric heating shall meet the requirements of LY/T 1700.
5.1.8 Surface resistance to cold and heat cycles
The surface of the wooden floor with built-in electric heating layer and electric heating should meet the requirements of LY/T 1700.
5.1.9 Formaldehyde emission
The formaldehyde emission of electric heating wooden floor with built-in electric heating layer shall meet the requirements of LY/T 1700.
5.1.10 Dimensional stability of resistance to cold and heat cycles
5.1.10.1 After the 6.10 test, the width and length warpage of the built-in electric heating layer electric heating solid wood composite floor shall conform to GB/T
The requirements of 5.4.2 in 18103-2013.
5.1.10.2 After the 6.10 test, the width and length warpage of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall meet
GB/T 18102 requirements.
5.1.11 Resistance to cold and heat cycle bonding performance
5.1.11.1 After the 6.10 test, the impregnation and peeling of the built-in electric heating layer electric heating solid wood composite floor shall comply with GB/T 18103-2013
5.5 requirements.
5.1.11.2 After the 6.10 test, the internal bonding strength of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall comply with GB/T 18102
Requirements.
5.2 Electric heating performance requirements
The electric heating performance of the built-in electric heating layer electric heating wooden floor shall meet the requirements of Table 1.
5.3 Electrical safety performance requirements
5.3.1 Leakage current at operating temperature
The leakage current of the built-in electric heating layer electric heating wooden floor under normal working conditions shall not exceed 0.25mA.
5.3.2 Electric strength at working temperature
The built-in electric heating layer electric heating wooden floor applies an AC test voltage of 50Hz and 3750V to it under normal working conditions, which lasts
1min, no breakdown and flashover phenomenon should occur.
5.3.3 Moisture resistance
5.3.3.1 Waterproof grade
The waterproof level of the wooden floor with built-in electric heating layer and electric heating shall not be lower than the IPX7 level in GB 4208-2008.
5.3.3.2 Leakage current in wet state
The leakage current of the built-in electric heating layer electric heating wooden floor in a humid state shall not exceed 0.25mA.
5.3.3.3 Electric strength in wet state
The built-in electric heating layer electric heating wooden floor should be able to withstand the AC test voltage of 50Hz and 3750V in the wet state, which lasted 1min,
There shall be no breakdown and flashover.
5.3.4 Insulation resistance
Both the cold insulation resistance and the hot insulation resistance of the wooden floor with built-in electric heating layer and electric heating shall not be less than 50MΩ.
5.3.5 Abnormal temperature
Work at 1.24 times the rated input power until it reaches a stable working state, lasting for 8 hours, during the working period, the built-in electric heating layer is used to heat the wooden floor
The maximum temperature of the board surface should not exceed 60℃, and there should be no abnormal phenomena such as deformation, color change of the board surface, and delamination.
5.3.6 Power lead and connection
The power lead and connection of the built-in electric heating layer electric heating wooden floor shall meet the requirements of 5.11 in JG/T 286-2010.
5.3.7 Electromagnetic radiation intensity
When the built-in electric heating layer electric heating wooden floor works normally, the root mean square value of the electric field, magnetic field and electromagnetic field quantity parameters in the environment should meet GB
8702-2014 The public exposure control limit.
5.3.8 Working life
The cumulative working time of the built-in electric heating layer electric heating wooden floor under normal working conditions shall not be less than 30 000h.
6 Test method
6.1 Appearance quality
6.1.1 The appearance quality inspection of the built-in electric heating layer electric heating solid wood composite floor shall be carried out according to the method specified in 6.1 of GB/T 18103-2013.
6.1.2 The appearance quality inspection of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall be carried out according to the method specified in GB/T 18102.
6.2 Specifications and deviations
6.2.1 The specifications and deviations of the built-in electric heating layer electric heating solid wood composite floor shall be inspected according to the method specified in 6.2 of GB/T 18103-2013.
Method.
6.2.2 The size and deviation inspection of the built-in electric heating layer electric heating impregnated paper laminated wood floor shall be carried out according to the method specified in GB/T 18102.
6.3 Basic physical and chemical properties
6.3.1 Impregnation peeling, static bending strength, elastic modulus, moisture content, paint film adhesion, surface of the built-in electric heating layer electric heating solid wood composite floor
Surface wear resistance, surface pollution resistance, and paint film hardness shall be tested according to the method specified in 6.3 of GB/T 18103-2013.
6.3.2 Density, moisture content, static bending strength, water absorption thickness expansion rate, static bending strength of built-in electric heating layer electric heating impregnated paper laminated wood floor
Degree, internal bonding strength, surface bonding strength, surface scratch resistance, surface abrasion resistance, surface resistance to cigarette burning, surface resistance to dry heat, surface resistance to pollution
Corrosion, impact resistance, and light fastness inspection shall be carried out according to the method specified in GB/T 18102.
6.4 Heat-resistant dimensional stability
Follow the method specified in LY/T 1700.
6.5 Moisture resistance dimensional stability
Follow the method specified in LY/T 1700.
6.6 Surface moisture and heat resistance
Follow the method specified in LY/T 1700.
6.7 Surface crack resistance
Follow the method specified in LY/T 1700.
6.8 Surface resistance to cold and heat cycles
Follow the method specified in LY/T 1700.
6.9 Formaldehyde emission
Carry out according to the method specified in GB/T 18580.
6.10 Dimensional stability and bonding performance of resistance to cold and heat cycles
6.10.1 Principle
Test the dimensional change and gluing performance of the wooden floor with built-in electric heating layer and electric heating after repeated power-on and power-off, and then through cooling and heating cycles.
6.10.2 Apparatus
6.10.2.1 Voltage regulator. voltage regulation range 0-380V (±1V).
6.10.2.2 Low temperature test chamber. the lowest can reach -20℃ (±0.5℃).
6.10.2.3 Other measuring instruments required for the built-in electric heating layer electric heating solid wood composite floor shall be selected according to the requirements of GB/T 18103-2013.
6.10.2.4 Other measuring instruments required for the built-in electric heating layer electric heating impregnated paper laminated wood floor shall be selected according to the requirements of GB/T 18102.
6.10.3 Test procedure
6.10.3.1 The input power of the wooden floor with built-in electric heating layer is equal to 1.24 times of the rated power, and the floor work reaches the equilibrium temperature.
After 3 hours, power off and stop working, immediately place the floor in a low temperature test box of -10℃ (±0.5℃) for 3 hours, after taking it out
Repeat the test again, so that 4 cycles of cooling and heating cycles.
6.10.3.2 After 4 cycles of heat and cold cycle treatment, take the floor out of the low temperature test box, and test the warpage within 30 minutes at room temperature.
Curvature. The built-in electric heating layer electric heating solid wood composite floor is tested for warpage according to the method specified in 6.2.2.6 of GB/T 18103-2013, and the built-in electric heating
Thermal layer electric heating impregnated paper laminated wood flooring is tested for warpage according to the method specified in GB/T 18102.
6.10.3.3 After testing the degree of warpage, take the test piece on the same floor. The built-in electric heating layer and electric heating solid wood composite floor shall be in accordance with GB/T 18103-2013
The method specified in 6.3.2 is used to test the impregnation peeling, and the built-in electric heating layer electric heating impregnated paper laminated wood floor shall be in accordance with the method specified in GB/T 18102
Test the internal bond strength.
6.11 Heating time
Carry out according to the method specified in 10 of GB/T 7287-2008.
6.12 Working temperature
6.12.1 Temperature measurement point
The temperature measurement point distribution of the built-in electric heating layer electric heating wooden floor is carried out according to Figure 1.The four sides of the inner frame in Figure 1 are the long side of the floor and the wide side inward
10mm, then determine the 9 temperature measurement points shown, the temperature measurement points should be within the effective heating area.
Figure 1 Distribution of temperature measurement points
6.12.2 Temperature measurement
The built-in electric heating layer electric heating wooden floor works under the rated working voltage, after the temperature rises to a stable working state, press GB/T
The conditions and methods specified in 7287-2008 are carried out, and the temperature values of the 9 test points specified in Figure 1 are measured and recorded in sequence. Take the measured 9 test points
The arithmetic average temperature is used as the working temperature, that is, the average surface temperature.
6.13 Temperature unevenness
After the built-in electric heating layer electric heating wooden floor is tested in 6.12.2, take the maximum and minimum of the 9 temperature values and calculate the difference.
That is temperature unevenness.
6.14 Electricity-heat radiation conversion efficiency
Carry out according to the method specified in 17 of GB/T 7287-2008.
6.15 Power deviation
Carry out according to the method specified in 11 of GB/T 7287-2008.
6.16 Leakage current and electric strength at working temperature
6.16.1 Leakage current at operating temperature
The electric heating wooden floor with built-in electric heating layer shall be connected with the lead wires according to the actual wiring method, and shall be carried out according to the method specified in 6.9.1 of JG/T 286-2010.
6.16.2 Electric strength at working temperature
The electric heating wooden floor with built-in electric heating layer shall be connected to the lead wire according to the actual wiring method, and shall be carried out according to the method specified in 6.9.2 of JG/T 286-2010.
6.17 Moisture resistance
6.17.1 Waterproof rating
Carry out according to the method specified in 14.2.7 of GB 4208-2008, the test duration is 72h.
6.17.2 Leakage current in wet state
After the electric heating wooden floor with built-in electric heating layer is tested in 6.17.1, it shall be carried out according to the method specified in 6.10.2 of JG/T 286-2010.
6.17.3 Electric strength in wet state
After the electric heating wooden floor with built-in electric heating layer is tested in 6.17.1, it shall be carried out according to the method specified in 6.10.3 of JG/T 286-2010.
6.18 Insulation resistance
6.18.1 Cold insulation resistance
Carry out according to the method specified in 6.11.1 of JG/T 286-2010.
6.18.2 Thermal insulation resistance
Carry out according to the method specified in 6.11.2 of JG/T 286-2010.
6.19 Abnormal temperature
Carry out according to the method specified in 6.8 of JG/T 286-2010.
6.20 Power leads and connections
The cross-sectional area and tensile resistance of the power wire shall be carried out according to the method specified in 22.101 of GB 4706.82-2007.
6.21 Electromagnetic radiation intensity
The built-in electric heating layer electric heating wooden floor is put into the rated voltage until it reaches a stable working state, and the test equipment and method are in accordance with HJ/T 10.2
Carry out the specified method. During the test, test 3 points at an average distance in the length direction of the floor. The test probe or the sensing part of the instrument is connected to the floor surface.
Touch, each test point is tested 5 times continuously, and the measurement time should not be less than 15 seconds each time, and read the maximum value of the stable state, and finally take the average value.
Evaluation methods and standards shall be conducted in accordance with HJ/T 10.3.
6.22 Working life
According to the method specified in 6.22 of JG/T 286-2010.After the test, the width of the built-in electric heating layer electric heating solid wood composite floor,
The warpage in the length direction and the impregnation and peel performance meet the requirements of GB/T 18103-2013, and the built-in electric heating layer, electric heating impregnated paper laminated wood floor
The warpage in the width and length directions and the internal bonding strength meet the requirements of GB/T 18102.Leakage current is not more than 3.5mA, electric strength reaches
5.3.2 requires that the actual power is less than ±10% from the rated power, and the electric-heat radiation conversion efficiency is not less than 90% of the initial value.
The life of the sample is not less than 30 000h.
7 Inspection rules
7.1 Inspection classification
Product inspection is divided into factory inspection, factory spot inspection and type inspection.
7.2 Factory inspection
The factory inspection items, technical requirements and test methods shall be carried out in accordance with Table 3.
7.3 Factory inspection
The factory spot check items, technical requirements and test methods are carried out in accordance with Table 3.
7.4 Type inspection
Type inspection items are shown in Table 3.During normal production, the type inspection shall not be less than once every six months. In any of the following situations, it shall be carried out
Type test.
a) When major raw materials and production undergo major changes;
b) When production is suspended for a long time and production is resumed;
c) When the quality supervision agency conducts supervision and inspection;
d) When there is a big difference between the factory inspection result and the last type inspection result.
7.5 Sampling and determination method
7.5.1 Composition and inspection of inspection lot
The product quality of the built-in electric heating layer electric heating wooden floor should be sampled according to the regulations in the same batch, the same specification, and the same type of product.
And check the samples one by one, and the samples are counted as blocks.
7.5.2 Inspection of specifications
7.5.2.1 The sampling plan for solid wood composite flooring with built-in electric heating layer and electric heating shall be carried out according to the method specified in GB/T 18103-2013.
7.5.2.2 Built-in electric heating layer electric heating impregnated paper laminated wood floor sampling plan GB/T 18102 specified method.
7.5.3 Appearance quality inspection
7.5.3.1 The sampling plan for solid wood composite flooring with built-in electric heating layer and electric heating shall be carried out according to the method specified in GB/T 18103-2013.
7.5.3.2 Built-in electric heating layer electric heating impregnated paper laminated wood floor sampling plan GB/T 18102 specified method.
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