Papers by Keyword: New Materials

Abstract: This research focuses on bibliometric analysis using R Studio and Bibliometrics as tools for data collection and evaluation related to advances and trends in developing organic-based composite materials with polymeric matrices. The importance of this analysis lies in understanding how these materials require a well-defined matrix that acts as a continuous phase, providing resistance to compressive stress while facilitating interaction with the discontinuous phase to withstand tensile forces. Additionally, it is essential to objectively establish the reinforcing fibers that make up the dispersed phase, as they protect the material against environmental factors and mechanical agents, preventing negative effects such as wear, buckling, and compressive stress. Proper selecting phases is crucial when evaluating the results obtained about the estimated values. Thus, one of the main challenges in formulating polymeric compositions for composite material development is the accurate identification of matrices along with the supporting material. As a result of the challenges associated with the production of these materials, this research confirms, through bibliographic analysis, the increasing exploration of such composites, their impact on various fields throughout history, the technical difficulties inherent in their fabrication in many proposed cases, and the costs involved in their manufacturing.

Abstract: The results of research into new materials are increasingly pushing the boundaries of science and technology. For some of the materials, such as polymers, composites and nanomaterials, new knowledge is expected in the future. However, new knowledge is also being gained in the case of metal alloys, which were considered to have been fully investigated. Thus, in 2018, new knowledge emerged about materials that are believed to be able to significantly influence many areas of modern society. They include seven completely different materials such as polymers, nanocomposites, and metal alloys. The materials are Wood Sponge – the greener way to clean up oceans; the strongest bio-material – stronger than steel and its biodegradable; self-healing material – it does it without external stimulant; Platinum Gold Alloy – matching Diamond in wear resistance; Silicon X – better than the original; Indefinitely recyclable plastics – making a case for the future of plastics; and Glass coating that can block sunlight. In this paper, an overview of knowledge about them is given, and their application characteristics are highlighted.

Abstract: The article considers the possibility of applying the eddy current method of non-destructive testing for measuring the electrical conductivity of new material - thin metal films. Copper films of various thickness obtained by physical vapour deposition were used as the measurement object. The deposition method and the hardware and software complex for measuring the electrical conductivity of the film were briefly described. A calibration curve that makes it possible to restore the values of the electrical conductivity of the material by the signal value of the eddy current probe was presented. The test results of films with different characteristics were given, and the distribution of the electrical conductivity of the films depending on the batch was shown. Based on different values of the electrical conductivity in a batch, the difference in deposition quality of various films was found.

Abstract: In this work, the application of a novel strategy to extend the shelf life of fresh cut fruits isproposed. In particular, edible film coatings from natural resources were used with the aim ofextending the shelf life of fresh cut apples. Chitosan and carboxymethylcellulose were consideredand a promising formulation was developed. The evaluation of the shelf life extension of fruits wasperformed in a multiparametric way over a period of 10 days. The percentage weight losses werecalculated for treated and untreated fruits in order to evaluate the performances of the coatingmaterialto avoid contact with environment. In the meanwhile, gas chromatography coupled to massspectrometry (GC-MS) was considered to determine the volatile compounds producing acharacteristic flavor of apples. Results demonstrated a significant improvement in the physiologicalloss in weight of treated fruits with respect to controls, while the study of the volatile componentindicated the ability of treated fruits to retain its freshness during storage.

Abstract: Weaving the bobbin lace is a traditional activity from Peniche, a village situated in the west coast of Portugal. This activity is known like art for centuries. However, the traditional way of producing it has been kept as well as the works produced. The bobbin lace hasn’t accompanied the evolution of times nor does it risk innovation. This wrong perspective has led to the discredit of the product, leading the young generations to keep on producing it the way their ancestors have done it – weaving the lace both for home consumption and/or entertainment. In an interventionist methodology, we propose the use of new materials to replace the traditional use of cotton as far as weaving the bobbin lace is concerned as well as the creation of new products. These two parts getting together can and probably will give a new perspective of the traditional and lead to new consumptions and/or applicability to the bobbin lace. Innovation is the key word for doing it. The desire of getting to know the new and the different, recreated from the traditional, will arouse curiosity in the young generations.

Abstract: The diversity of industrial solid waste has grown exponentially in recent years, requiring waste management strategies focused on the reduction of associated environmental impacts. The solidification/stabilization (S/S) technique is increasingly used in the disposal or recycling of this waste. The Brazilian standard about the leaching of hazardous compounds in waste is being used to evaluate S/S products in their end disposal in landfills, with no description of any protocol to investigate performance during their life cycle, as observed when they are used as admixture to building materials. In this context, this study describes a qualitative review of leaching methods in use to assess S/S products in Brazil, in comparison with the main techniques adopted in other countries.

Abstract: With our country economy has already came second in the world, urbanization development, but the rapid economic development also brings great hidden trouble, for example, the environmental problems, the population problem, such as water pollution problems. Which is closely related to the construction industry, therefore, make the green building industry, environmental protection and governance environment in China, such as water pollution problem plays an important role. This article is through the introduction to green materials, the classification of the new green building materials to do an overview.

Abstract: A large number of tests has been carried out in the last 15 years all around the world to study the possibility to use recycled concrete aggregates (RCA) to produce structural concrete.Earlier tests indicated that RCA concrete had lower properties in comparison to ordinary concrete, such as lower elastic modulus, a more brittle post-elastic behavior, lower workability, higher shrinkage and creep.Most of these issues have been addressed to the content of cement mortar remaining in adhesion to the aggregate after the recycling processes and that cannot be totally eliminated without high economic and ecological costs. This cement mortar which has undergone the crushing process creates zones of weakness in the RCA, causes higher water absorption, higher concrete porosity and causes the decay of the aforementioned properties.More recent tests prove that Recycled Concrete shows this peculiar problems only with a percentage of substitution of standard aggregates with RCA higher than 30%. Under this percentage recycled aggregate concrete (RAC) can be considered as a standard concrete, on condition that an appropriate mix design is performed.

Abstract: Based on the full cognition of the role of which new materials plays in industrial design, and combining the development of science and technology with increasing environmental awareness of human, this paper discusses the importance of new materials applications in contemporary industrial design. From the aspect of morphological characteristics, visual characteristics, features and bionic intelligence and so on, it analyzes the application effects of new materials in industrial design, showing that materials and industry design have the relationships that they permeate with each other, and they both play a significant role in the development of industrial design.

Abstract: During shale gas well drilling and completion, the oil based muds (OBMs) would reduce the bonding strength of cement slurry by filter-cake and oil-wettability. At the same time, mixing cement slurry with the OBMs can lead to contamination, and subsequently creates significant problems, such as, reducing the normal thickening time and the compressive strength, and hence affecting the quality of the cementing of the shale gas well. Therefore in the present investigation, the mechanism of the interface displacement, wetting conversion and the contamination was explored by Atomic Force Microscopy (AFM), X-Ray Diffraction (XRD), scanning electron microscope (SEM) and other methods. And then the new materials with the enhanced bonding strength and the contamination relieving by OBMs were obtained. The results showed that the chemical composition of filter-cake determined the properties of chemical preflush, the combined systems (LSS) efficiently flushed filter-cake and increased the bonding strength. It has been found that the reverse wetting agent (APG) has better reverse wetting properties than Tarim Oilfield current application system, which effectively changes the wettability of cementing surface from lipophilicity to hydrophilic. The OBMs and cement slurry mixing generated the emulsion structure and honeycomb structure, and the structures can affect the rheology and the strength of cement slurry; the contaminative relieve agent (SCW) can form a thin film on the surface of the cement stone, the film covers the hole and improves cement compressive strength, thus the SCW can relieve the contamination by OBMs.