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《Journal of Forestry Engineering》 2019-01
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Structure design and process analysis of internal heating engineered wood flooring

ZHOU Zhaobing;LI Xiang;DING Jianwen;GUO Xiaolei;CAO Pingxiang;College of Materials Science and Engineering,Nanjing Forestry University;  
The heating wood flooring can radiate the heat of the floor surface evenly to the room and achieve the indoor heating effect according to the air flowlawof "cold falling heating". The heating wood flooring has the advantages of easy room layout,fast heating rate and uniform temperature distribution,but it also has many drawbacks,such as complex process,high manufacturing cost,high energy consumption and poor safety. According to the floor heat conduction model designed by the Solidworks software simulation,the design scheme of internal heating engineered wood flooring structure and quick connector was put forward from the perspective of industrial production in this paper. The internal heating engineered wood flooring was made up of decorative board,sub surface board,upper substrate,heating components,thermal conductive components,substrate and insulation materials. According to the difference between heating components and thermal conductive components,the preparation process was further analyzed,and the physical and chemical properties,the electric-thermal effect and the safety performance were tested by the third-party organizations. The results are as follows: the static bending strength was X = 35.3 MPa(Xmin= 30.1 MPa),the elastic modulus was 4 555 MPa,immersion without stripping,good dimensional stability(thermal dimensional stability was0.19% in length and 0.30% in width direction,moisture resistance dimension stability was 0.12% in length and 0.17%in width direction,formaldehyde emission(40 L) was 0.2 mg/L. It can arbitrarily cut off without affecting the heating effect of the floor,and it can be rapidly installed in series,parallel or both methods. After heating 20 min,the surface average temperature can reach above 25 ℃(the test environment temperature is 5 ℃),the leakage current at working temperature was lower than 0.005 mA,and the cold insulation resistance and the thermal insulation resistance all reach 500 MΩ. It would not cause local blackening and scorching because of the heating,which proved that it can be used in wet environment safely. It was concluded that the internal heating engineered wood floor can be safely used as an intelligent building material.
【Fund】: “十二五”国家科技支撑计划(2015BAD14B04)
【CateGory Index】: TU564.6
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