scholarly journals APPLICATION OF COPPERED POLYSTYRENE SPHERES IN CASTING PRODUCTS

2021 ◽  
pp. 87-91
Author(s):  
V. A. Gulevsky ◽  
S. N. Tsurikhin ◽  
N. Yu. Miroshkin ◽  
D. A. Filatov
Keyword(s):  
Technological Scheme ◽  
Galvanic Coating ◽  
Polystyrene Foam ◽  
Polystyrene Spheres ◽  
Foam Aluminum ◽  
Blowing Agent ◽  
Aluminum Material

A technological scheme for obtaining an experimental foam aluminum material with a fixed arrangement of closed pores inside the casting is presented. As a blowing agent, polystyrene foam granules were used on the surface of which a copper galvanic coating was applied in several ways.

Experimental Research on Aluminum Foam Dynamics Performance

2013 ◽  
Vol 853 ◽  
pp. 178-181
Author(s):  
Bo Wang ◽  
Yong Zhang ◽  
Rong Jun Chen
Keyword(s):  
Relative Density ◽  
Aluminum Foam ◽  
Material Design ◽  
Material System ◽  
Foam Aluminum ◽  
Filtration Method ◽  
Strain Behavior ◽  
Foam Metal ◽  
Production Preparation ◽  
Aluminum Material

This paper chooses the remit foam aluminum by Shanghai co., LTD provides high pressure filtration method is used to make the opening of aluminum foam material. System research of relative density and strain rate changes on the relative density is high (> = 0.255) of aluminum foam materials shock stress - strain behavior, deformation failure mechanism and the influence law of energy absorption characteristics. These studies can not only expand the awareness of foam metal mechanical behavior, but also on the domestic industrial production of the performance of the foam aluminum material design, optimization and production preparation plays a guiding role.

The Development of a Non-Fluorocarbon-Based Extruded Polystyrene Foam Which Contains a Halogen-Free Blowing Agent

2004 ◽  
Vol 77 (4) ◽  
pp. 599-605 ◽  
Author(s):  
Youichi Ohara ◽  
Kenkichi Tanaka ◽  
Takahiro Hayashi ◽  
Haruo Tomita ◽  
Shigeru Motani
Keyword(s):  
Polystyrene Foam ◽  
Blowing Agent ◽  
Halogen Free ◽  
Extruded Polystyrene Foam

Investigation on Plastic Forming of Foam Aluminum Material

2011 ◽  
Vol 474-476 ◽  
pp. 287-291
Author(s):  
Hai Bin Chen ◽  
Zhen Zhong Sun ◽  
Wei Feng He ◽  
Rong Yong Li
Keyword(s):  
Plastic Deformation ◽  
High Temperature ◽  
Room Temperature ◽  
Solidus Temperature ◽  
Foam Material ◽  
Foam Aluminum ◽  
Cold Forming ◽  
Plastic Forming ◽  
Stress And Deformation ◽  
Aluminum Material

The article focuses on analyzing plastic deformation and microstructure evolution mechanism of foam aluminum material when foam aluminum is compressed and stretched uniaxially at room temperature, and studying plastic deformation of foam aluminum at room temperature and high temperature. Results show that cold forming of foam material is restricted by many factors. So, it only carries out some simple integral forming and local plastic forming; High temperature reduces the yield stress and deformation limits of foam material, that the forming can be easily carried out. If parts of TiH2 foam aluminum are processed, the temperature must be below solidus temperature in order to avoiding destructing pore structure.

Effects of surfactants on mechanical and thermal properties of soy-based polyurethane foams

2020 ◽  
Vol 56 (6) ◽  
pp. 611-629
Author(s):  
Gurjot S Dhaliwal ◽  
Sudharshan Anandan ◽  
Mousumi Bose ◽  
K Chandrashekhara ◽  
Paul Nam
Keyword(s):  
Thermal Properties ◽  
Mineral Wool ◽  
Polyurethane Foams ◽  
Mechanical And Thermal Properties ◽  
Polystyrene Foam ◽  
Blowing Agent ◽  
Fold Reduction ◽  
High Insulation ◽  
Extruded Polystyrene Foam ◽  
Scanning Electron

Polyurethane foams are widely used for insulation applications due to their high insulation properties as compared to conventional materials such as extruded polystyrene foam and mineral wool. In this study, soy-based polyurethane foams were prepared using five different surfactants while keeping other components such as soy-based polyol, diisocyanate, catalyst, and blowing agent (water) constant. Prepared samples were tested for mechanical and thermal properties to evaluate the effect of different surfactants used in varying quantities. The morphology of the foam samples was observed using a scanning electron microscope. Seventeen fold reduction in the cell size was observed with an increase in the amount of surfactant from 0.5 to 5.0 g. Samples with higher amounts of surfactant also exhibited a higher number of closed cells. Better thermal insulation was observed for samples with 2.0 and 5.0 g of surfactant as compared to samples with 0.5 g of surfactant. A similar trend was observed in the mechanical strength, moisture absorbance, and density of the fabricated foam samples.

Mechanical anisotropy of PS/CO2 microcellular foam sheet prepared by foaming extrusion

2016 ◽  
Vol 54 (1) ◽  
pp. 87-101 ◽  
Author(s):  
Joël Reignier ◽  
Richard Gendron
Keyword(s):  
Mechanical Behavior ◽  
Cell Walls ◽  
Shape Anisotropy ◽  
Mechanical Anisotropy ◽  
Preferential Orientation ◽  
Polystyrene Foam ◽  
Machine Direction ◽  
Microcellular Foam ◽  
Blowing Agent ◽  
Extrusion Foaming

Microcellular polystyrene foam sheets prepared by extrusion foaming with CO2 as the blowing agent were found to exhibit a significant anisotropy in mechanical behavior which could not be explained solely by the shape anisotropy of the cells and/or the preferential orientation of polystyrene molecules in the machine direction. Surprisingly, samples allowed to fully relax were still found to maintain part of their mechanical anisotropy, which was attributed to the weakness of the cell walls perpendicular to machine direction.

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