Effect of Exfoliated Vermiculite as Thickening and Foaming Agent on the Physical Properties of Aluminium Foam

2020 ◽  
pp. 853-860
Author(s):  
V. V. K. Lakshmi ◽  
V. Arun Vikram ◽  
K. V. Subbaiah ◽  
K. Suresh ◽  
B. Surendra Babu
Keyword(s):  
Physical Properties ◽  
Aluminium Foam ◽  
Foaming Agent

scholarly journals Characterization and physical properties of aluminium foam–polydimethylsiloxane nanocomposite hybrid structures

2019 ◽  
Vol 230 ◽  
pp. 111521 ◽  
Author(s):  
Susana C. Pinto ◽  
Paula A.A.P. Marques ◽  
Matej Vesenjak ◽  
Romeu Vicente ◽  
Luís Godinho ◽  
...  
Keyword(s):  
Physical Properties ◽  
Aluminium Foam ◽  
Hybrid Structures

FOAMING AGENT FOR ALLOYS OF ALUMINIUM FOAMS

2018 ◽  
Vol 32 (2) ◽  
pp. 53-59
Author(s):  
Jozsef Juhasz ◽  
Vasile Hotea ◽  
Keyword(s):  
Thermal Analysis ◽  
Pore Structure ◽  
Powder Compact ◽  
Matrix Alloy ◽  
Aluminium Foam ◽  
Foaming Agent ◽  
Melting Technique ◽  
Foam Production

The powder compact melting technique for aluminium foam production as practised today accepts a certain mismatch between foaming agent decomposition and matrix alloy melting temperatures.This mismatch is believed to influence the pore structure in an unfavourable way. Adjustment of TiH 2 decomposition as well as liquidus and solidus temperatures of matrix alloys can be used to counteract it. Effects of TiH 2 thermal are investigated using thermal analysis. TiH 2 variants gained via annealing treatments were used to produce aluminium foam precursor materials.

scholarly journals Preparation and Physical Properties of High-Belite Sulphoaluminate Cement-Based Foam Concrete Using an Orthogonal Test

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 984 ◽  
Author(s):  
Chao Liu ◽  
Jianlin Luo ◽  
Qiuyi Li ◽  
Song Gao ◽  
Zuquan Jin ◽  
...  
Keyword(s):  
Physical Properties ◽  
Economic Cost ◽  
Pore Wall ◽  
Water Repellent ◽  
Dry Density ◽  
Foam Concrete ◽  
Range Analysis ◽  
Foaming Agent ◽  
Sulphoaluminate Cement ◽  
Foam Properties

Prefabricated building development increasingly requires foam concrete (FC) insulation panels with low dry density (ρd), low thermal conductivity coefficient (kc), and a certain compressive strength (fcu). Here, the foam properties of a composite foaming agent with different dilution ratios were studied first, high-belite sulphoaluminate cement (HBSC)-based FCs (HBFCs) with 16 groups of orthogonal mix proportions were subsequently fabricated by a pre-foaming method, and physical properties (ρd, fcu, and kc) of the cured HBFC were characterized in tandem with microstructures. The optimum mix ratios for ρd, fcu, and kc properties were obtained by the range analysis and variance analysis, and the final optimization verification and economic cost of HBFC was also carried out. Orthogonal results show that foam produced by the foaming agent at a dilution ratio of 1:30 can meet the requirements of foam properties for HBFC, with the 1 h bleeding volume, 1 h settling distance, foamability, and foam density being 65.1 ± 3.5 mL, 8.0 ± 0.4 mm, 27.9 ± 0.9 times, and 45.0 ± 1.4 kg/m3, respectively. The increase of fly ash (FA) and foam dosage can effectively reduce the kc of the cured HBFC, but also leads to the decrease of fcu due to the increase in mean pore size and the connected pore amount, and the decline of pore uniformity and pore wall strength. When the dosage of FA, water, foam, and the naphthalene-based superplasticizer of the binder is 20 wt%, 0.50, 16.5 wt%, and 0.6 wt%, the cured HBFC with ρd of 293.5 ± 4.9 kg/m3, fcu of 0.58 ± 0.02 MPa and kc of 0.09234 ± 0.00142 W/m·k is achieved. In addition, the cost of HBFC is only 39.5 $/m3, which is 5.2 $ lower than that of ordinary Portland cement (OPC)-based FC. If the surface of the optimized HBFC is further treated with water repellent, it will completely meet the requirements for a prefabricated ultra-light insulation panel.

Methods for Filling Hollow Structures with Aluminium Foam

2010 ◽  
Vol 638-642 ◽  
pp. 61-66 ◽  
Author(s):  
Joachim Baumeister
Keyword(s):  
Energy Absorption ◽  
Hybrid Structure ◽  
Absorption Capacity ◽  
Aluminium Foam ◽  
Compression Tests ◽  
Foaming Agent ◽  
Hollow Structures ◽  
Industrial Sectors ◽  
Foam Filling ◽  
Application Potential

Aluminium foams produced according to the powder metallurgical/foaming agent process are currently being used in several industrial sectors, such as automotive, rail transport or machine tools. Nevertheless there still is a high further application potential to be exploited. Especially in hybrid structures, e.g. in automotive structures that are locally filled with aluminium foam, great improvements regarding the energy absorption capacity and the sound absorption behaviour can be obtained. In the present paper several methods that allow for filling or local filling of hollow structures are investigated and presented. The effect of the foam filling on the energy absorption behaviour of the hybrid structure is discussed. Similar effects were also observed in compression tests on foam filled hollow profiles. The results of these investigations are presented.

Carbonates as Foaming Agent in Chip-based Aluminium Foam Precursor

2010 ◽  
Vol 26 (9) ◽  
pp. 845-850 ◽  
Author(s):  
Marco Haesche ◽  
Dirk Lehmhus ◽  
Jörg Weise ◽  
Manfred Wichmann ◽  
Irene Cristina Magnabosco Mocellin
Keyword(s):  
Aluminium Foam ◽  
Foaming Agent

scholarly journals PRODUCTION OF ALUMINIUM FOAM AND THE EFFECT OF CALCIUM CARBONATE AS A FOAMING AGENT

2011 ◽  
Vol 39 (2) ◽  
pp. 441-451
Author(s):  
M. Aboraia ◽  
R. Sharkawi, ◽  
M.A. Doheim
Keyword(s):  
Calcium Carbonate ◽  
Aluminium Foam ◽  
Foaming Agent

Influence of the Heat Treatment on the Structure and Property of the Foam Glass

2014 ◽  
Vol 488-489 ◽  
pp. 90-93
Author(s):  
Long Wu ◽  
Yi Hong Zhao ◽  
Rong Fa Chen ◽  
Hua Yang ◽  
Qing Qing Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Compressive Strength ◽  
Calcium Carbonate ◽  
Physical Properties ◽  
Foam Glass ◽  
Xrd Analysis ◽  
Foaming Agent ◽  
Structure And Property ◽  
Metallurgical Structure

In this paper, the foam glass was made with 5 wt % calcium carbonate used as foaming agent. The macro morphology, physical properties and the metallurgical structure are discussed in detail by the modern means of DTA, SEM and XRD analysis. The results indicated that when the powders were foamed at 800°C for 20min, the property of the samples was best, the density was 0.706 g/cm3,and the compressive strength was 3.36Mpa.

scholarly journals Effect of Addition of Chokeberry Juice Concentrate and Foaming Agent on the Physical Properties of Agar Gel

Gels ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 137
Author(s):  
Ewa Jakubczyk ◽  
Anna Kamińska-Dwórznicka
Keyword(s):  
Physical Properties ◽  
Profile Analysis ◽  
Bubble Diameter ◽  
Agar Gel ◽  
Foaming Agent ◽  
Egg Albumin ◽  
Texture Profile ◽  
Agar Gels ◽  
Juice Concentrate ◽  
Chokeberry Juice

This study aimed to determine the effect of the addition of chokeberry juice concentrate (CJC) and foaming agent (egg albumin) with different percentages on the selected physical properties of agar gel. The agar gels with the addition of 5, 10, and 20% concentrations of chokeberry juice concentrate and with fructose addition were prepared. In addition, the foamed gels with different concentrations of egg albumin (in the range 0.5–2.0%) and CJC were produced. The water content, colour, density, hold-up and some mechanical and TPA (Texture Profile Analysis) descriptors as well some structural and acoustic emission parameters of non-aerated and foamed gels were analysed. The addition of CJC changed the colour of agar gel with fructose, the attractive appearance of the aerated gel was also linked with the addition of concentrate. The addition of 20% of CJC and foaming agent created samples with very low hardness, cohesiveness, and gumminess, and the structure of the aerated samples was characterised by the larger bubble diameter and the wider distribution of their size. The more promising texture and structure properties were obtained for samples with aerated gels with 5 and 10% addition of chokeberry juice concentrate.

scholarly journals Experimental Study on Performance of Foamed Magnesium Slag Cement

2020 ◽  
Vol 198 ◽  
pp. 01008
Author(s):  
Chen Guo ◽  
Jianxun Ma ◽  
Yuheng Dai ◽  
Rui Niu
Keyword(s):  
Experimental Study ◽  
Chemical Composition ◽  
Portland Cement ◽  
Physical Properties ◽  
Industrial Waste ◽  
Foaming Agent ◽  
Cement Ratio ◽  
Mechanical And Physical Properties ◽  
New Type ◽  
Potential Activity

Magnesium slag is an industrial waste residue produced in magnesium smelting. Its chemical composition is similar to Portland cement and has potential activity. After the magnesium slag is foamed, it can be made into a new type of lightweight material, and its forming, mechanical and physical properties were closely related to dry material formula, water-cement ratio and foaming agent amount. In this paper, experiments were carried out to find the ingredients and processes suitable for the forming of foamed magnesium slag, making it have certain mechanical and physical properties at the same time.

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