Investigation of wetting and spreading of aluminium on titanium during the formation of aluminium – titanium foam composite materials

The article is devoted to the development and research of the structure and properties of polyurethane foam (PUF) composite materials with the antibacterial enzyme lysozyme. A series of PUF composite materials with lysozyme of various concentrations (1, 3 and 5 wt %) were obtained. It is established that the immobilization of lysozyme occurs due to intermolecular hydrogen bonds by the method of IR spectroscopy. According to the results of physical-mechanical tests the adhesive strength of polyurethane foam compositions with lysozyme is in the range of 0,82–1,16 MPa. The introduction of lysozyme into the composition of polyurethane foams and an increase its amount causes a decrease in the values of adhesion strength by 18,1–29,3 %. According to differential scanning calorimetry the tested systems are single-phase with a glass transition temperature in the range of -49,20 to -49,86 °C. The introduction of lysozyme into the composition causes an increase heating capacity at the glass transition, which can be associated with a decrease of the packing density of macrochains resulting in an increase in free volume, which leads to an increase molecular mobility. According to the results of the analysis of transmission optical microscopy micrographs the studied PUF have a microporous structure, which depends on the content of filler in their composition. It was found that the presence of lysozyme in the composition of composite materials leads to a decrease in the percentage of porosity, an increase in the number of pores with a diameter of up to 300 μm, which is 76,7–82,4 % (while for PUF – 69,5 %) and the absence of pores with a diameter larger than 990 μm. Thermogravimetric characteristics indicate the heat resistance of the synthesized PUF to a temperature of 179,95 °C, which allows dry sterilization of samples without changing their characteristics. PUF composite materials with lysozyme are promising materials that can be used in medical practice as polymer compositions for the treatment of wounds and burns.

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Effects of preparation conditions on the supercapacitor performances of MnO2-PANI/titanium foam composite electrodes

Journal of Nanoparticle Research ◽

10.1007/s11051-019-4557-7 ◽

2019 ◽

Vol 21 (6) ◽

Cited By ~ 3

Author(s):

Xiaoliu Wang ◽

Jianling Zhao ◽

Zhongwei Li ◽

Tiantian Xiao ◽

Ziqing Li ◽

...

Keyword(s):

Composite Electrodes ◽

Preparation Conditions ◽

Foam Composite ◽

Titanium Foam

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Improvements relating to the production of composite materials: fibre/ polyurethane foam composite sheet

Composites ◽

10.1016/0010-4361(70)90268-5 ◽

1970 ◽

Vol 1 (6) ◽

pp. 381

Keyword(s):

Composite Materials ◽

Polyurethane Foam ◽

Composite Sheet ◽

Foam Composite

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EXTERNALTRANSLUCENT COATINGS DEVICE WITH THE USE OF GLASSPROFITE AND COMPOSITE MATERIALS

Construction Materials and Products ◽

10.34031/2618-7183-2019-2-4-50-55 ◽

2020 ◽

Vol 2 (4) ◽

pp. 50-55

Author(s):

S. Abramyan ◽

V. Polyakov ◽

O. Oganesyan

Keyword(s):

Energy Efficiency ◽

Composite Materials ◽

Climatic Conditions ◽

Sound Insulation ◽

Structural Elements ◽

Scientific Publications ◽

Floor Slabs ◽

Foam Composite ◽

Building Systems ◽

Wall Panels

the article raises issues related to the use of profile glass (glass profilite) in the device of external vertical enclosing structures of modern building systems. There is a need for a combination of composite materials, especially foam composite, in the manufacture of translucent enclosing structures, which greatly reduces the weight of the outer panels and increases their heat and sound insulation characteristics. It is emphasized the need to consider the issues of energy efficiency not only at the stage of operation of the building, but also at the stage of its construction, as energy efficiency is not only the ability to save heat at the stage of operation of buildings, but also high technological performance of works at the stage of their construction. The novelty of this study is just the design of the wall panel with a possible combination of two materials – profiled glass and foam. The article describes in detail not only the design of the panel itself, but the technology of its manufacture, as well as the technological processes associated with the device of enclosing structures. Two variants of connection of wall panels with floor slabs are considered and connection nodes are given. Based on the analysis of a number of scientific publications, the variants of the mechanisms used for the installation of panels taking into account the nodes of the connection of structural elements – the panel itself and the floor slabs are considered. Due to the fact that the article discusses the use of boxed glass, emphasizes the need to continue the study in order to identify the possibility of using other types of glass (channel, ribbed, edged) for the manufacture of multi-component wall panels, taking into account the climatic conditions of the regions.

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Properties of Rock Wool Fiber Modified Phenolic Foam Composite Materials

Mechanics and Materials Science ◽

10.1142/9789813228177_0092 ◽

2017 ◽

Author(s):

Zhong-Qiu Li ◽

Ling Zhang ◽

Peng-Fei Jia ◽

Li-Jie Ci ◽

Shao-Yan Zhang ◽

...

Keyword(s):

Composite Materials ◽

Wool Fiber ◽

Phenolic Foam ◽

Foam Composite ◽

Rock Wool

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Mechanical and Operational Characteristics of Layered Titanium–Aluminum Foam Composite Materials

Inorganic Materials Applied Research ◽

10.1134/s2075113320010244 ◽

2020 ◽

Vol 11 (1) ◽

pp. 238-242

Author(s):

A. I. Kovtunov ◽

Yu. Yu. Khokhlov ◽

S. V. Myamin ◽

D. A. Semistenov

Keyword(s):

Composite Materials ◽

Aluminum Foam ◽

Operational Characteristics ◽

Foam Composite ◽

Titanium Aluminum

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Processing and Development of a New High Strength Metal Foam

MRS Proceedings ◽

10.1557/proc-851-nn11.4 ◽

2004 ◽

Vol 851 ◽

Cited By ~ 3

Author(s):

A. Rabiei ◽

Adrian T. O'Neill ◽

Brian P. Neville

Keyword(s):

Compressive Strength ◽

Composite Materials ◽

Powder Metallurgy ◽

Hollow Sphere ◽

Metal Foam ◽

Cell Structure ◽

Powder Metallurgy Method ◽

Casting Technique ◽

Closed Cell ◽

Foam Composite

ABSTRACTThe research sited in this paper involves the development of new closed cell metal foam composite materials using powder metallurgy (PM) and gravity casting techniques. The foam is comprised of steel hollow spheres packed into a random dense arrangement, with the interstitial space between spheres occupied with a solid metal matrix. Using a casting technique, an aluminum alloy infiltrates the interstitial spaces between steel spheres. In a powder metallurgy method, steel spheres and iron powder are sintered to form a solid, closed cell structure. The measured densities of the Al-Fe composite foam and iron foam are 2.4 g/cm3 and 3.2 g/cm3, with relative densities of 42% and 41% respectively.The hollow sphere metal foam composite materials developed in this study displayed superior compressive strength as compared to hollow sphere foams currently being produced. The compressive strength of the cast Al-Fe foam averaged 67 MPa over a region of 10 to 50% strain, while the steel PM foam averaged 45 MPa over the same strain region. Densification began at approximately 50% for the cast foam and 55% for the PM foam.

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