|Table of Contents|

 Experiment and Simulation Analysis of Castinplace Urea 
Formaldehyde Exterior Wall External Insulation System


Research Field:
Publishing date:


 Experiment and Simulation Analysis of Castinplace Urea 
Formaldehyde Exterior Wall External Insulation System
 ZHENG Yuan1WANG Li2XIA Yun3
 1Shanghai JiangHuancheng Architects & Engineers Co, Ltd, Shanghai 200070, China;
2School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3Heilongjiang Province Academy of Cold Area Building Research, Harbin 150080, China
 Keywords:urea formaldehyde exterior wall external insulation system ABAQUS simulation crack simulation
 Abstract:In order to design exterior wall external insulation system as urea formaldehyde is taken as the insulating layer, some material experiments are carried out to determine the material parameters of all parts in the system Two schemes of exterior wall external insulation system are designed, which use calcium silicate boards as exterior formwork The finite element software ABAQUS is utilized to simulate two systems under temperature deformation, shrinkage of insulating layer and wind load by model building Constructional measures of both schemes are put forward Finally, urea formaldehyde foam insulation uses the brittle cracking constitutive model in ABAQUS as its constitutive relation to investigate the possibility of insulating layer forming into heat bridge because of crack propagation The numerical results show that the schemes of exterior wall exterior insulation system for civil high buildings in severe cold area like Harbin can meet the demand for safety and economy It is recommended that Ф24mm cylindrical ABS connectors and 6mm thick calcium silicate boards should be chosen in exterior wall external insulation system when the building height is below 30m These can meet not only the demand for safety, but also the rules of not forming heat bridge in the insulation layer


 [1]JIANG Lin, XIAO Huahua, AN Weiguang, et al Correlation Study Between Flammability and the Width of Organicthermal Insulation Materials for Building Exterior Walls[J] Energy and Buildings, 2014(82):243-249
[4]AHAMAD T, ALSHEHRI S M Thermal Degradation and Evolved Gas Analysis: A Polymeric Blend of Urea Formaldehyde (UF) and Epoxy (DGEBA) Resin[J]. Arabian Journal of Chemistry,2014,7(6):1140-1147
[5]金龙飞,陈慧莉,宋学刚 脲醛树脂发泡材料的制备研究[J].甘肃教育学院学报(自然科学版),2001,15(4):37-39
[6]FINK J K Reactive Polymers Fundamentals and Applications:A Concise Guide to Industrial Polymers [M]. New York: William Andrew,2005
[7]SLONIM I Y, ALEKSEYEVA S G, URMAN Y G, et al The Structural Changes Which Occur During the Synthesis and Setting of Ureaformaldehyde Resins(UFR)[J]. Polymer Science USSR,1978,20(10): 2569-2576
[8]刘兴国,杜文林,朱盈豹 改性脲醛泡沫材料的开发与应用新建议[J]. 辽宁建材,2011(2):11-13
[10]卓萍,王国辉,胡胜利,等 国外建筑外保温系统发展动态[J].消防科学与技术,2010,29(6):462-465
[11]STAZI F, VEGLIO A, PERNA C D, et al Experimental Comparison Between 3 Different Traditional wall Constructions and Dynamic Simulations to Identify Optimal Thermal Insulation Strategies[J]. Energy and Buildings, 2013(60): 429-441
[12]MASSEY LKThe Effect of Sterilization Methods on Plastics and Elastomers:The Definitive User′s Guide and Databook [M]. 2nd editionNew York: William Andrew,2005
[14]KAR Y B, TALIK N A, SAULI Z, et alFinite Element Analysis of Thermal Distributions of Solder Ball in Flip Chip Ball Grid Array Using ABAQUS[J]. Microelectronics International, 2013, 30(1): 14-18
[15]KOLUPAEV V A, YU M H, ALTENBACH H Visualization of the Unified Strength Theory[J]. Archive of Applied Mechanics, 2013, 83(7): 1061-1085
[17]KOLARI, KARI Damage Mechanics Model for Brittle Failure of Transversely Isotropic Solids: Finite Element Implementation[M] Finland: VTT Publications,2007
[18]LI Qiang, YANG Qing, LUAN Maotian, et al Numerical Simulation and Simplified Criterion for Closure of an Open Crack in Brittle Materials[J]. Gongcheng Lixue/Engineering Mechanics,2009,26(9):237-243
[20]XU Yangjian, YUAN Huang Computational Analysis of Mixedmode Fatigue Crack Growth in Quasibrittle Materials Using Extended Finite Element Methods[J]. Engineering Fracture Mechanics, 2009, 76(2): 165-181
[21]ZHANG W,SUBHASH GAn Elasticplasticcracking Model for Finite Element Analysis of Indentation Cracking in Brittle Materials[J]. International Journal of Solids and Structures, 2001, 38(34): 5893-5913


Last Update: 2019-03-18