Experimental Research on Mechanical and Thermal Properties of Four Insulating Materials for Heat Bridge Effect

GONG Chao; HOU Zhaoxin; LIANG Zihao; WU Zhaoqi; LIANG Weiqiao; FANG Wujun

doi:10.13204/j.gyjzG21030909

Volume 52 Issue 12

Dec. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(12): 66-71,165

YANG Yuan, CUI Qiandao, LIAN Jijian, LIU Hongbo, ZHOU Guangen, CHEN Zhihua. LSTM-BASED DAMAGE PREDICTION AND ASSESSMENT OF SPATIAL FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(7): 203-208. doi: 10.13204/j.gyjzG20092308

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GONG Chao, HOU Zhaoxin, LIANG Zihao, WU Zhaoqi, LIANG Weiqiao, FANG Wujun. Experimental Research on Mechanical and Thermal Properties of Four Insulating Materials for Heat Bridge Effect[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(12): 66-71,165. doi: 10.13204/j.gyjzG21030909

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Experimental Research on Mechanical and Thermal Properties of Four Insulating Materials for Heat Bridge Effect

doi: 10.13204/j.gyjzG21030909

1. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
2. Central Research Institute of Building and Construction (Shenzhen) Co., Ltd., MCC, Shenzhen 518055, China;
3. School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China;
4. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China

Received Date: 2021-03-09
Available Online: 2023-03-22

Abstract

Abstract

Thermal break connection can effectively deal with the problem of thermal bridge effect within the overhanging steel components. The selection of thermal insulation materials is a key to thermal break connection technology while there are few research focused on it. Materials of PA6, PVC, FR4 and PEEK were selected for the potential insulating materials through extensive investigations. A total of 40 compressive tests and 12 thermal conductivity tests of PA6, PVC, FR4 and PEEK were conducted, and their compressive strength, compressive modulus of elasticity, and thermal conductivity coefficients were recorded. The yielding points were studied by using the Farthest Point Method, and the compressive constitute models were obtained by curve-fitting according to Sherwood-Frost model. Combined with the performances of these four materials including mechanical properties, thermal properties and economy, the adaptability of these four materials used in thermal break connections was analyzed. The results indicated that PA6, PVC and PEEK specimens showed a ductile failure mode, while FR4 showed a laminated brittle failure mode. The tested yield strength were 60.1, 50.4 and 125.8 MPa respectively for PA6, PVC and PEEK, while their thermal conductivity coefficients were 0.1755, 0.1424 and 0.2318 W/(m·K), respectively. It was found that FR4 showed the best comprehensive performance while PA6 took the second place, and PVC took the last place. Due to its high cost, PEEK is not appropriate for thermal break material in practical engineering.
- thermal break connection,
- insulating material for heat bridge effect,
- compressive properties,
- thermal conductivity coefficient,
- thermal bridge

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References

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