Materials Industry Research Articles

SOME PHYSICAL-CHEMICAL FEATURES THE SOLID PHASES HYDRAULICITY

The most widely used in composite materials industry are concrete installations bonded with different binders. Higher energy consumption and several ecological problems make their manufacture to become more and more expensive. The growing market of construction works and constant extension of real estate property increases the demand for cheap and new materials with desired features. As a result of many years intensive scientific researches there is now a practical possibility to offer an alternative and unique products technology of manufacture based on binding suspension (bricks, wall, heat insulating and refractory materials and other) – all of them of desired size and shape. The experience of the composite materials technology development shows that in comparison with traditional the microhardness of materials with an ultradispersive structure increases several times and the specific surface increases by an order contributing to a decrease in the sintering temperature. The longevity of similar material is essentially increasing provi­ded structure is forming under conditions of the servi­ce site. Thus, building industry will obtain improved service life and performance from binding suspensions as field installations will continue to move toward adopting and utilizing practices based on technology described herein, rather than on cement technology. Relative to conventional composite materials products with mechano-chemical binders will continue to gain in popularity because of the following advantages: low energy consumption and low prices for the products; ecological safety of the manufacture process and of the ready-made products; good mechanical and design properties; moisture and cold proofness; surface need not be fired; no shrinkage of the products after drying; simple to manufacture a variety of different products; ready availability and flexibility in design; absence of manufacture wastes.

Synthesis of 2-(3,5-Dinitrophenyl)-5-(trinitromethyl)-1,3,4-oxadiazole.

The trinitromethyl group plays a crucial role in the energetic material industry due to its high oxygen balance and energetic properties. This study focuses on the synthesis of dinitrophenyl-substituted trinitromethyl-1,3,4-oxadiazole. The introduction of dinitrophenyl groups to trinitromethyl-1,3,4-oxadiazole aims to improve its stability against heat-induced decomposition, a critical factor in ensuring the safe and reliable performance of energetic materials. Consequently, 2-(3,5-dinitrophenyl)-5-(trinitromethyl)-1,3,4-oxadiazole (6) was designed and synthesized. Compound 6 exhibited a remarkable thermal decomposition temperature of 117 °C, surpassing that of all other 1,3,4-oxadiazoles bearing the trinitromethyl group. This research highlights the incorporation of the dinitrophenyl ring to elevate the thermal decomposition temperature of the trinitromethyl group attached to the 1,3,4-oxadiazole ring, thereby presenting novel strategies for enhancing the thermal stability of these compounds.

Industry Energy Dependence Characteristics Under Different Energy Consumption Accounting Scopes: A Comparison Between China and the U.S.

Energy plays a vital role in the sustainable development of the economy and society. The key measures for achieving sustainable development include optimizing the energy structure, improving energy efficiency, and reducing reliance on non-renewable energy sources. This study constructs a monetary energy consumption database for China that distinguishes between energy resources used as raw materials and those used as other intermediate inputs, based on China’s annual input–output table from 2001 to 2020. In this paper, the direct energy consumption and energy conservation potential of 33 industries in both China and the United States are compared under the following three energy consumption scopes: not excluding energy used as raw materials, excluding energy used as raw materials for the production of non-energy products, and excluding energy used as raw materials for the production of non-energy products or the production of energy products through non-combustion processes. This study also compares the direct energy dependence characteristics of these industries. The following conclusions are made: First, the energy consumption structure varies greatly under different scopes, of which the third scope is closest to the international standards. Second, China’s raw materials industries have made some progress in energy conservation, and their gap with those in the U.S. has started to narrow. Third, China’s high-tech industries still have potential for energy conservation and emission reduction.

THE IMPACT OF COTTON MANUFACTURING AND EXPORT ON THE INDIAN ECONOMY

Cotton assumes a significant part in the advancement of the Indian economy. The Indian material Industry is basically cotton based. In this paper, an unobtrusive endeavor has been utilized PET chips in cotton industry and its effect on the development of Indian Economy

Halal procurement strategy for the halal pharmaceutical industry in Indonesia

Purpose This study aims to develop a halal procurement strategy for the halal pharmaceutical industry in Indonesia. Design/methodology/approach This qualitative research is based on in-depth interviews, followed by a strength, weakness, opportunity and threat analysis (using analytical network process technique) to develop halal procurement strategies for the halal pharmaceutical industry in Indonesia. Findings Access to halal-certified raw materials is the most difficult issue for pharmaceutical business procurement departments. Because Indonesia is heavily dependent on raw material imports, developing the raw material industry should be a top priority. Recommendations are drafted for the government, pharmaceutical industry and education to strengthen Indonesia’s halal pharmaceutical sector and procurement strategies. Research limitations/implications Few studies have been conducted on halal procurement in the pharmaceutical industry, and case studies are recommended to further explore halal procurement best practices. Quantitative research is also recommended to better understand existing halal procurement strategies and the purchasing process of halal critical items for pharmaceutical industries in Muslim-majority countries like Indonesia. Practical implications Halal critical items sourced for the halal pharmaceutical industry require halal certification, multiple supplier sourcing, evaluation mechanisms and benefit from horizontal collaboration. The main bottleneck for the halal pharmaceutical industry is lack of raw materials with the right halal certificates. Originality/value To the best of the authors’ knowledge, this is the first study on halal procurement strategies in the pharmaceutical industry. Its findings are relevant to regulatory, technical and business strategies in Muslim-majority countries.

Mechanical Behaviour of Green Epoxy Composites Reinforced with Sheep and Dog Wool from Serra Da Estrela.

Environmental awareness has led industries and consumers to replace products derived from oil resources with products derived from natural sources. In the case of the composite materials industry, the replacement of synthetic fibres with natural fibres has increased in recent years. To study the influence that different types of natural fibres and different textile manufacturing techniques have on the mechanical properties of composites, bio-based epoxy matrix composites reinforced with different natural animal fibres were produced, some reinforced with sheep's wool and others with dog wool, which were later subjected to bending and tensile tests. From the authors' knowledge, there are few studies of composites produced with animal fibres, and even fewer with dog hair. The textile structures used as reinforcement were created using crochet, knitting, and weaving techniques. Prior to the composites production, the fibres were characterized by X-ray Diffraction (X-RD), and the yarns produced from these fibres were subjected to tensile tests. The results obtained suggest that the number of yarns and the diameter of the needles used during the production of the reinforcement have a significant impact on the mechanical properties of the composites. The green epoxy resin composites reinforced with sheep's wool exhibit higher values of flexural strength, tensile strength, and Young's modulus than those reinforced with dog wool, with average increases of 36.97%, 45.16%, and 72.99%, respectively. It was also possible to verify that the composites reinforced with woven fabrics and crocheted fabrics exhibit the highest values of tensile strength, flexural strength, and Young's modulus. Additionally, the composites reinforced with woven fabrics exhibit the highest values of deformation at first failure/break and toughness.

Are carbon costs transmitting to the building materials industry?

IntroductionReconciling economic development and emission reduction of polluting gases requires balancing long-term and short-term goals across various markets. As a new production cost, the price of carbon allowances is assumed to affect the supply and demand of carbon-intensive sectors. Therefore, this study examines the dynamic price spillover effects between China as the largest carbon emission market and the carbon-intensive building materials industry in a unified time-frequency framework.MethodsThis study measures the dynamic overall and directional spillover effects of carbon and building materials markets in three frequency bands, considering eight carbon pilots and the national carbon market in China and four important building materials.ResultsThe empirical results show that the bi-directional spillover between carbon and the building materials market shows pronounced characteristics in the time-frequency domain, especially in the short-term frequency band of one day to one week, with strong connectivity. After the launch of the national carbon market, the information spillover from the building materials market to the carbon pilots become stronger. Both the carbon pilots and the national carbon market have significant short- and long-term impacts on the building materials market. In addition, there are differences in the impact of carbon markets on various types of carbon intensive building materials.DiscussionCompliance cycles in carbon markets are likely to induce sharp fluctuations in spillovers between the two markets. Therefore, balancing industrial development and stabilizing carbon prices requires a refined policy design that considers the diversified impacts of carbon markets on different industries at across frequencies.

Electrification or Hydrogen? The Challenge of Decarbonizing Industrial (High-Temperature) Process Heat

The decarbonization of industrial process heat is one of the bigger challenges of the global energy transition. Process heating accounts for about 20% of final energy demand in Germany, and the situation is similar in other industrialized nations around the globe. Process heating is indispensable in the manufacturing processes of products and materials encountered every day, ranging from food, beverages, paper and textiles, to metals, ceramics, glass and cement. At the same time, process heating is also responsible for significant greenhouse gas emissions, as it is heavily dependent on fossil fuels such as natural gas and coal. Thus, process heating needs to be decarbonized. This review article explores the challenges of decarbonizing industrial process heat and then discusses two of the most promising options, the use of electric heating technologies and the substitution of fossil fuels with low-carbon hydrogen, in more detail. Both energy carriers have their specific benefits and drawbacks that have to be considered in the context of industrial decarbonization, but also in terms of necessary energy infrastructures. The focus is on high-temperature process heat (>400 °C) in energy-intensive basic materials industries, with examples from the metal and glass industries. Given the heterogeneity of industrial process heating, both electricity and hydrogen will likely be the most prominent energy carriers for decarbonized high-temperature process heat, each with their respective advantages and disadvantages.

Multigram synthesis of 2-vinylpyridine using bio-renewable 2-methyl tetrahydrofuran solvent

The present work reports the synthesis of 2-vinylpyridine in multigram synthetic approach as it has tremendous application in pharmaceutical science as well as in material science and industries. This present method emphasizes the usage of commercially available inexpensive raw materials and bio renewable solvents. Nontoxic TCCA was used as green chlorinating reagent and its corresponding bi-product obtained in the course of the reaction is biodegradable in nature. This entire three step procedure does not require any chromatographic techniques and the product is obtained in 95% yield with > 98% purity.

Valorization of Different Clays Used in the Treatment of Oily Wastewater in the Development of Construction Products

AbstractThe aim of this research is to study the feasibility of using clays used in the decontamination of wastewater containing olive oil wastewater (OOW), new lubricating oil (NOW) or motor oil (MOW) in the manufacture of ceramic bricks. Three types of clays were used for filtration, kaolinite type clay (KT), smectite type clay (CT) both from Tunisia and illitic chloritic clay (CS) from Jaén (Spain). These clays containing different types of oils, as well as the control clays, were used in the manufacture of bricks fired at 900 °C. These bricks were characterized by physical, mechanical and thermal tests. The sintered microstructure’s evolution was followed by tracked through scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). The results indicate that the specific type of clay used influences the technological characteristics of the bricks. The use of CT clay gives rise to increase bulk density, greater compressive strength, and reduced apparent porosity and water absorption. The use of clays used in the decontamination of water containing oils produced a decrease in bulk density, compressive strength and thermal conductivity and leads to an increase in apparent porosity and water absorption in the order OOW > NOW > MOW according to the total organic carbon content (TOC). Therefore, the use of clays used in the filtration of water that contain different oils can represent a promising way of valorizing this waste, which can alleviate the environmental impact and represents economic savings for the industry of construction materials with properties of thermal insulation, getting closer to a circular economy.

Characteristics of Fast-Growing Wood Impregnated Using Monoethylene Glycol and SiO Nanoparticles Against Fungal Attacks

Jabon (Anthocephalus cadamba) and Sengon (Falcataria moluccana) were fast-growing wood species widely planted in the community forest. Both kinds of wood have low durability even though they can potentially be used in the carpentry material industry. Therefore, this research aimed to analyze the vacuum-pressure impregnation effect using monoethylene glycol (C2H6O2) or MEG and silica dioxide (SiO2) nanoparticles on wood resistance to fungal decay. The results showed that impregnation treatment with MEG and SiO2 nanoparticles significantly improved the durability of Jabon and Sengon against fungal attacks. Furthermore, MEGSiO2 with 24-hour polymerization had a better impact on durability compared to both the control and MEGSiO2 with 12-hour polymerization. The 24-hour polymerization using 1% SiO2 nanoparticles resulted in the lowest weight loss for Jabon (5.86% ) and Sengon (5.21%). In addition, the variation of SiO2 nanoparticle concentration did not significantly affect the weight loss and durability of Jabon and Sengon against fungal decay.

Research on the Predictive Ability of Economic Policy Uncertainty on Stock Returns of Industries

In recent years, the emergence of economic policy uncertainty has had a certain impact on stock returns. It can be used as a research object to explore whether economic policy uncertainty can significantly predict future stock returns. This paper studies the predictive ability of economic policy uncertainty based on relevant data from major industries in the United States from January 1985 to December 2023, including Food industry (Food), Retail Stores industry (Rtail), Fabricated Products industry (FabPr), Drugs, Soap, Perfumes, Tobacco industry (Cnsum), Construction and Construction Materials industry (Cnstr), Consumer Durables industry (Durbl), Automobiles industry (Cars), Textiles, Apparel & Footwear industry (Clths), Machinery and Business Equipment industry (Machn), Chemicals industry (Chems), and Transportation industry(Trans), Utilities industry (Utils), Steel Works Etc industry (Steel), Mining and Minerals industry(Mines), Oil and Petroleum Products industry (Oil), and Banks, Insurance Companies, and Other Financials industry (Finan). Through both in-sample and out-of-sample examines, it is found that economic policy uncertainty is a reliable indicator for predicting stock returns, and its predictive performance is better in Food industry, Retail Stores industry, Fabricated Products industry, Transportation industry, Construction and Construction Materials industry, Consumer Durables industry, Automobiles industry, Textiles, Apparel & Footwear industry, Machinery and Business Equipment industry, Chemicals industry, and Drugs, Soap, Perfumes, Tobacco industry than in Utilities industry, Steel Works Etc industry, Mining and Minerals industry, Oil and Petroleum Products industry, and Banks, Insurance Companies, and Other Financials industry. Meanwhile, by replacing the measurement indicator of economic policy uncertainty, conducting long-horizon forecasting, and using different evaluation periods for robustness checks, it is found that the research conclusions are robust.

ПРОЦЕСНО-ОРІЄНТОВАНИЙ ПІДХІД ДО ОБЛІКУ ВИТРАТ Й КАЛЬКУЛЮВАННЯ СОБІВАРТОСТІ ПРОДУКЦІЇ ПІДПРИЄМСТВ З ВИРОБНИЦТВА ЗБІРНИХ ЗАЛІЗОБЕТОННИХ КОНСТРУКЦІЙ

Costs are one of the most important economic categories, and production costs are the main indicator of construction materials industry enterprises activity. In today's difficult business conditions for Ukrainian enterprises, taking into account the specifics of the production process of companies producing prefabricated reinforced concrete structures, constant monitoring of production costs helps to maintain the profitability and competitiveness of these business entities. Therefore, the development of management tools and cost accounting using a process-oriented approach for enterprises producing building materials allows taking into account all the features of production processes influencing the size and behavior of costs. The purpose of the article is to reveal and improve the features of cost accounting and costing of products according to production processes at enterprises producing precast reinforced concrete structures. The article analyzes the main directions of classification of production processes at enterprises of the production of prefabricated reinforced concrete structures and its influence on the organization of accounting. The directions for grouping costs in production processes are detailed and attention is focused on its impact on accounting and control of the costs. This will affect the quality of management decisions and the main performance indicators of the enterprises under study. In the process of research, the main foreign methods of accounting for costs and calculating the cost of products in production processes, which are possible for use at enterprises of the production of precast reinforced concrete structures, were determined. It was found that the ABC-costing method is the most acceptable from the point of view of the technological process of manufacturing products of the studied enterprises. Its combination with the regulatory method of cost accounting and product costing will provide significant opportunities for strategic planning of production costs, will contribute to the accuracy of product costing, and will improve the process of management decision-making.

A STATE OF ART AND PROSPECTS OF FLY ASH MANAGEMENT

The basic data on the volume of formation and composition of fly ash, which is a product of coal combustion at thermal power stations, are given. The analysis of the current state of ways of managing fly ash makes it possible to distinguish the following main directions: physical-mechanical, physical-chemical, biological and combined methods of handling it, which are used in agriculture (use as fertilizers and pesticides; chemical land reclamation: regulation of the structure and pH of the soil); during earthworks (reinforcement of weak and expansive soils, use as tamponage compositions, arrangement of embankments and dams); road construction (strengthening of the soil for the lower layers of the road surface; production of asphalt, cement-concrete mixtures for arranging the foundations of road clothing, as well as crushed stone-sand and gravel-sand mixtures reinforced with cement); building materials industry (cement, concrete, building solutions, geopolymers, bricks, building blocks, glass, glass ceramics, building ceramics, porous ceramics, rolled waterproofing materials); in protective coatings (paints, enamels, enamel glass, shotcrete, heat-protective and heat-insulating coatings); as sorbents and catalysts and their carriers; in mechanical engineering (abrasive, frictional, filtering and lubricating materials, materials for soldering, foundry sand forms or rods); as other materials (pigments, polymer composites, elements of chemical sources of electric current, accumulators of certain substances, carbon nanoparticles (fullerenes, nanotubes), cosmetics and hygiene products); in pyrometallurgical and hydrometallurgical methods of recovery of chemical elements; in alloys and metal matrix composites; for extracting rare earth elements. Currently, the most appropriate methods of disposal of fly ash are either its direct use with a minimal change in its properties, or its use with minimal processing and minimization of the formation of new waste, in particular in the building materials industry and road construction. Bibl. 164, Fig. 3.

Development and application of carbon dioxide direct mineralization technology and emission reduction device

Abstract This study analyzes the principles and methods of carbon dioxide mineralization fixation to address the challenges posed by global climate and ecological changes, achieve carbon neutrality goals, and solve carbon utilization issues in the development of the fluorosilicon new material industry. The research focuses on the direct mineralization reaction system of carbon dioxide flue gas and the development of a carbon dioxide emission reduction device utilizing wet mineralized gas treatment technology. To implement alkaline waste management for industrial solid waste. The research shows that the wet carbon dioxide mineralization and emission reduction device can make the alkaline solution better mineralize carbon dioxide, avoid the gas discharge too fast and affect the reaction rate. At the same time, the solution is mixed and the exhaust linkage is carried out to further improve the reaction rate, and provide a reference for the development of large-scale carbon dioxide utilization technology suitable for high energy consumption industries.

Kinetic modelling and mechanism elucidation of catalyst-free dimethyl terephthalate hydrolysis process intensification by reactive distillation

Polyethylene terephthalate (PET) is a widely used thermoplastic polymer in the packaging and materials industries, and is predicted to have continuous market growth in the future. Methods such as glycolysis and methanolysis of PET have been identified as promising approaches in sustainable chemical recycling of PET. The latter produces dimethyl terephthalate (DMT), which can be easily hydrolyzed to terephthalic acid (TPA) at elevated temperatures and pressures, and further reused for PET production. The aim of this study was to develop a kinetic model for the hydrolysis of dimethyl terephthalate, using the experimental data. Various reaction conditions (temperature, pressure, time) have been investigated and used to calculate the activation energies and reaction rate constants, while the variation in reactor setup with methanol (MeOH) removal was conducted to show its detrimental effect on the efficiency of the reaction and selectivity towards terephthalic acid. The first reaction step of DMT to monomethyl terephthalate (MMT) is relatively irreversible, while the second reaction step of MMT to TPA ceases, as soon as the equilibrium is reached. Highest yields of TPA (76.7 %) were obtained after 40 min at 265 °C, with MeOH removal, and the activation energy was calculated to be 95 and 64 kJ mol−1 for the first and second hydrolysis reaction step, respectively.

Growth rate dalam sektor barang baku dan primer di Bursa Efek Indonesia: Mana lebih baik?

The Sustainable Growth Rate is the maximum growth rate of a company so that it can grow without running out of funds from funding activities such as increasing shareholder capital ownership and drawing loans from creditors. This study measured, tested, and analyzed factors affecting sustainable growth. Some of the factors used in this study are leverage, profitability, and total asset turnover. This study uses objects from raw material sector companies and primary sector companies listed on the Indonesia Stock Exchange for 2018 - 2022, during which data collection was carried out using the purposive sampling method. The form of research used is associative research, a method that examines the relationship between variables, with a quantitative approach. The research data is based on secondary data, namely the company's annual financial report, which is available and has been audited by an independent auditor. Data processing uses multiple linear regression. The study results show that Leverage (DER) and Profitability (ROA) positively affect sustainable growth, providing practical insights for financial analysts and professionals in the raw material and primary sector industries. Total asset turnover (TATO) does not affect the sustainable growth rate. This study also shows that raw material sector companies have a higher sustainable growth rate than primary sector companies.

Analysis of patent innovation evolution and layout characteristics of global new textile materials technologies

Abstract Vigorously developing new textile material technology is critical to improving the textile industry's high-tech level, upgrading its transformation, promoting high-quality development of the real economy, and enhancing the country's overall power. This paper analyzes patent technology to explore new textile material technology layout characteristics and evolution trends for the strategic basis of industrial transformation and development on a global scale. The research took new textile material technology patents as the research object, constructed 76,373 invention application patent data pools in China, Europe, Japan, South Korea, and the United States, and analysed new textile material technology structural characteristics and their evolution trend from three aspects of patent structure, layout characteristics and evolutions. As a result, it was found that the development plans and target focuses of textile new material technology vary from country to country. Global enterprises in garments, advanced material production, and chemical materials, represented by DuPont, 3M, and Dow Global Technologies, provide an important guarantee for the United States in maintaining its global leadership position in the development of the new textile material industry. Japan pays more attention to the practicality of new materials and considers the coordinated development of the environment and resources. Europe and South Korea focus on the construction of industrial clusters with their own characteristics, establish and improve the industrial standardization system based on core technology and core manufacturing, and maintain global competitiveness in textile new material technology. After 2009, the number of patent applications for new textile material technology in China exceeded that of Europe, the United States, Japan, and South Korea, becoming a global patent power. However, there is still a huge gap between the quality of patents and the layout of new cutting-edge materials in China and those in developed countries such as the United States and Japan, which is the main problem that needs to be solved urgently in the future innovation and development of China's textile industry, technology planning and layout.

A Study on the Role of Engineering Materials Innovation in Urban Infrastructure Development in Promoting Economic Growth

Accompanied by the high speed of infrastructure construction in China’s major cities, China’s construction industry has been growing rapidly, and the engineering materials industry in construction has begun to transform from weak to strong. The study constructs a systematic theoretical model of engineering materials innovation in the construction industry to realize a systematic understanding of the engineering materials innovation mechanism. Combined with the economic growth theory, the impact of engineering materials innovation on regional economic growth in major Chinese cities is explored by using the threshold regression model. Through the study, it is found that the current innovation of China’s engineering materials industry is mainly facing two major problems, namely the slowdown of industrial growth rate, and the reduction of fixed asset investment, while the diversification path of engineering materials technological innovation outputs is beginning to diverge, and the diversity and ubiquity indices are gradually increasing, but the growth rate is slowing down. Threshold regression shows that when engineering materials innovation every 1% growth, for regional economic growth (GDP) to promote the role of between 0.099%~0.112%. The research in this paper provides a new perspective and comprehensive explanation for the study of engineering materials innovation-driven economic development, enriches the theoretical study of regional economic growth, and also provides theoretical insights and practical guidance for the government’s policy making and enterprises’ innovation practice.

Peningkatan Produktivitas Karyawan PT. NBI melalui Pelatihan Microsoft Excel sebagai Strategi dalam Pengelolaan Data Perusahaan

PT Nusantara Building Industries (NBI) is one of the national private companies located in Central Java Province which is engaged in the building materials industry in the form of symmetrical corrugated cement chrysotile fiber sheets. PT NBI tries to meet the needs of consumers according to demand and make various innovations in producing its products. Therefore, it is necessary to carry out a training to improve the soft skills of PT NBI employees in the form of Microsoft Excel training. Microsoft Excel is a software application used to carry out various activities, including data analysis, graph making, complex calculations, and various other tasks. Based on the purpose of implementing community service activities, namely increasing employee productivity. So that the implementation of this training is in accordance with the objectives, namely being able to assist PT NBI employees in finding effective ways to manage and analyze company data. In addition, it can increase understanding in the use of Microsoft Excel. The focus of Microsoft Excel training on the AND/OR function is used to perform logical evaluation of several conditions or criteria. This training is designed to introduce the use of AND/OR functions in the company. This method aims to increase the effectiveness and efficiency of work when encountering cases in several conditions or criteria. The evaluation results of the training implementation showed a good level of acceptance from PT NBI employees towards understanding and using the AND/OR formula. Keywords — Enterprise, Microsoft Excel, AND/OR Function, Data Analysis.