Research on Impact Factors of Thermal Insulation Material Based on Grey Relational Analysis

2011 ◽  
Vol 328-330 ◽  
pp. 1377-1380 ◽  
Author(s):  
Xiao Gang Zhao ◽  
Yi Zhou ◽  
Shi Xiang Pan
Keyword(s):  
Polyurethane Foam ◽  
Thermal Insulation ◽  
Field Experiments ◽  
Impact Factors ◽  
Insulation Material ◽  
Rigid Polyurethane Foam ◽  
Relational Analysis ◽  
Grey Relational ◽  
Insulation Quality

According to application of thermal insulation materials in the practical construction of electrical heat tracing in viscous oil pipeline, impact factors of rigid polyurethane foam widely used as new insulation material are systemically analyzed by Grey Relational Analysis (GRA) in the theory of Grey System to find out priorities among those factors. To further study their performances and to improve the quality of constructions, ten field experiments were carried out in Tanggula Mountain. The foaming conditions and the performances of the rigid polyurethane foam were recorded to be analyzed by GRA. The analysis results, acting as scientific guidance for construction, show that the insulation quality of rigid polyurethane foam is mainly determined by the ratio of components, thus the priority is to control such dominant factor and overall consideration of other factors should be taken to ensure insulation quality in the foaming process. More field experiments prove that the ratio should be controlled between 1.15 and 1.18 to ensure the thermal insulation.

Grey Relational Analysis and its C# Program in Analysis of Rigid Polyurethane Foam

2014 ◽  
Vol 1061-1062 ◽  
pp. 1167-1170
Author(s):  
Xiao Gang Zhao ◽  
Yi Zhou ◽  
Jian Yu Zhao ◽  
Xiao Yuan Yang ◽  
Xing Zheng
Keyword(s):  
Polyurethane Foam ◽  
Grey Relational Analysis ◽  
Heat Insulation ◽  
Impact Factors ◽  
Insulation Material ◽  
Rigid Polyurethane Foam ◽  
Relational Analysis ◽  
C Program ◽  
Grey Relational ◽  
The Impact

With the rapid development of petroleum industry in China, the electrical heat tracing becomes very important for viscous oil transportation, while the heat insulation acts as the key to the application of electrical heat tracing. Rigid polyurethane foam has been widely used in long-distance pipelines for its advantages as the heat insulation material. However, there is also a lack of systematic analysis on the impact factors of such material, thus it is urgent to find out a practical method to distinguish the major impact factors. This paper introduces the Grey Relational Analysis (GRA) with its C# program, and it is proposed to analyze the actual impact factors of rigid polyurethane foam. The application shows that this method is practical, simple, rapid and accurate, so it suitable for similar applications in other fields.

scholarly journals Influence of Milling Process Parameters on Machined Surface Quality of Carbon Fibre Reinforced Polymer (CFRP) Composites Using Taguchi Analysis and Grey Relational Analysis

2021 ◽  
Vol 13 (6) ◽  
Author(s):  
I.S.N.V.R. Prasanth ◽  
◽  
S. Nikitha ◽  
R. Pulsingh ◽  
M. Sampath ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Process Parameters ◽  
Grey Relational Analysis ◽  
Relational Analysis ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Grey Relational ◽  
Scanning Electron

The article presents the milled surface quality of Uni-Directional Carbon Fibre Reinforced Polymer (UD-CFRP) composites from Taguchi’s and grey relational analysis. The novelty is demonstrating the possibility of detecting the surface defects in polymer composites during milling using SEM analysis. The material used for this study is UD-CFRP composite laminates and made by hand-layup process. All the milling operations were carried out using a solid tungsten carbide end milling tool and experiments conducted on CNC milling machine. Taguchi L9, 3-level orthogonal array was considered for experimentation. Analysis of Variance (ANOVA) was conducted to explore the significance of each individual input process parameters on multiple performance characteristics. Optimal process parameters are thoroughly validated by grey relational grade achieved by the grey relational analysis for multi performance characteristics. Finally, experimental results were correlated and analyzed with scanning electron micrographs using Scanning Electron Microscope (SEM).

Applications of Rigid Polyurethane Foam Insulation Materials in Architectural Energy Conservation

2012 ◽  
Vol 608-609 ◽  
pp. 1783-1785
Author(s):  
Xiao Ying Zhang ◽  
Guo Hui Wang ◽  
Dan Liu ◽  
Ying Wang
Keyword(s):  
Energy Conservation ◽  
Polyurethane Foam ◽  
Thermal Insulation ◽  
Small Proportion ◽  
High Efficiency ◽  
High Price ◽  
Rigid Polyurethane Foam ◽  
Smoke Toxicity ◽  
Application Development ◽  
Paper Briefly

This paper briefly introduces the main properties and four systems of rigid polyurethane thermal insulation foam intended for use in buildings for energy conservation purposes, and application development at home and abroad. Although the applications of polyurethane are widespread in architectural energy conservation, there are some problems just as high price, smoke toxicity, fire safety and so on thus it still occupies a small proportion in buildings for energy conservation purposes. It is no doubt that the function with high efficiency of thermal insulation, fireproof and low smoke density of rigid polyurethane foam conservation products is our goal.

scholarly journals Experimental Study on Polyurethane Foam as Thermal Insulation Material

1966 ◽  
Vol 1966 (120) ◽  
pp. 236-245
Author(s):  
Shiro Watanabe ◽  
Akira Kamimura ◽  
Yoshiyuki Izutsu ◽  
Masaru Ishida
Keyword(s):  
Experimental Study ◽  
Polyurethane Foam ◽  
Thermal Insulation ◽  
Insulation Material ◽  
Thermal Insulation Material
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