Importance of the plastics industry to the nation. Raw materials of the paint and varnish industry

2010 ◽  
Vol 56 (21) ◽  
pp. 484-488
Author(s):  
L. A. Jordan
2019 ◽  
pp. 17-23
Author(s):  
Leif Jilken

Plastic waste from industrial companies and commerce constitutes a considerable potential for recovery and conservation of resources. But there are hundreds of different sorts of plastic, in other words, plastic waste is a problem due to its heterogenous nature. The possibility of manufacturing commmercially saleable products from unwashed recycled plastics has been very restricted. For its normal range of products, the plastics industry has required absolutely pure raw materials and it has not been economically justifiable to wash and to produce this from recycled material. By adding organic fibres, such as short woodfibres, with the mixed recycled termoplastics, a composite material POLYWOOD is produced. The granulate mixture is extruded to different profiles, called POLYPLANK, that can be handle like wood but which withstands rot, moisture, soil, etc.and is completely recyclable several times. Polyplank are used for manufacturing of noise barrier sections, recycling yard enclosures, interior fittings in animal boxes etc


Author(s):  
Svitlana Luchik ◽  
◽  
Iryna Mustetsa

Chemical industry is one of the main segments of world industry. It should be noted that this is a multi-element production system, which includes the synthesis of substances with certain properties based on mineral, organic and other raw materials by chemical processing. Producing intermediate goods (raw materials and semi-finished products) for all sectors of the economy. Modern chemical industry largely determines the level of their competitiveness, as well as the dynamics of development, nature and direction of innovation processes. On the other hand, a wide range of chemical products confirms its importance in the consumer market. The presence of debatable issues on the activities of chemical industry of Ukraine, as well as problems in the information support of management information on the state of the material and technical base, led to the choice of topic, goal, objectives, subject and structure of research. Priority directions of development of the paint and varnish industry as a whole and in the context of individual business entities should focus on solving problems that ACCOUNTING, ANALYSIS AND AUDIT Issue I (81), 2021 73 together will ensure the competitiveness of the industry and its progressive development in the complex conditions of modern transformation processes of Ukraine’s economy. One of the problems hindering the development of domestic enterprises of chemical industry is the inadequacy of accounting and analytical support systems for information support of management decisions on the formation and use of material and technical base of economic entities. Taking into account all the above mentioned, we consider it appropriate to introduce an internal audit mechanism in enterprises for the efficiency of the use of fixed assets in order to form an information base for management staff. The article examines the state and prospects of development of the paint and varnish industry of Ukraine in order to attract investment flows, as well as the need to implement an internal audit system in order to form an information base for management staff. During the study of current state of chemical industry of Ukraine, methods of observation and detailing were used; in the study of statistical material and information of the surveyed enterprises - methods of grouping and comparison, as well as methods of synthesis and analysis The introduction of internal audit of fixed assets in order to control the effectiveness of their use, as well as to make informed management decisions is based on the improvement of the accounting system. After all, it is the data of accounting and reporting allow us to assess the actual availability of fixed assets, the correctness of the service life, the correct choice of depreciation method, as well as the accuracy of its calculation, completeness of accounting, correct correspondence of accounts and generalization of information in financial statements. Therefore, it is necessary to study ways of improvement of the account and internal audit at the enterprises of the paint and varnish industry considering functions of management of development of material and technical base of the enterprise.


2020 ◽  
Vol 86 (23) ◽  
Author(s):  
Li Wang ◽  
Guohui Li ◽  
Yu Deng

ABSTRACT Diamines are important monomers for polyamide plastics; they include 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane, and 1,6-diaminohexane, among others. With increasing attention on environmental problems and green sustainable development, utilizing renewable raw materials for the synthesis of diamines is crucial for the establishment of a sustainable plastics industry. Recently, high-performance microbial factories, such as Escherichia coli and Corynebacterium glutamicum, have been widely used in the production of diamines. In particular, several synthetic pathways of 1,6-diaminohexane have been proposed based on glutamate or adipic acid. Here, we reviewed approaches for the biosynthesis of diamines, including metabolic engineering and biocatalysis, and the application of bio-based diamines in nylon materials. The related challenges and opportunities in the development of renewable bio-based diamines and nylon materials are also discussed.


2019 ◽  
Vol 12 (42) ◽  
pp. 131-136
Author(s):  
Abeer Naesa ◽  
Reabal Mona ◽  
Ahmad Ibrahim Kara-Ali ◽  
Hussam Eddin Laika

Abstract Disposal of plastic waste is a serious problem, because plastics accumulate in the environment and cause significant pollution due to their degradability. Therefore, the main objective of this research was to reach the biodegradable plastics industry as alternatives to non-biodegradable plastics. And the existence of such biodegradable plastic must contribute in reducing the emission of harmful greenhouse gases and keeps the environment clean, and reduces the cost for pollution from the accumulation of plastic waste. Algae was used as a raw material for the production of bio-plastics because of its unique properties such as it grows rapidly and in large quantities at a low cost and grows in a variety of water environments throughout the year, which means that there is no risk in the difficulty of securing the raw materials needed for the production of bio-plastics The study concluded that the tested samples partially decomposed in fresh and alkaline water during a period of 26 days, which means a high dependence on algae to the production of bio plastics as an environmentally friendly industry.


Author(s):  
R. P. Medvedev ◽  
A. V. Skrylev

In order to provide the Russian paint and varnish industry with cheap domestic raw materials, research has been carried out to develop a phosphor pigment that meets the following requirements: 1) the production cost per unit of its volume should not exceed the cost of a similar volume of traditional dyes; 2) the pigment should be made exclusively from domestic raw materials. Sulfides were chosen as the most optimal raw materials, because of a fairly simple technology and the possibility of using production waste as a raw material, namely phosphogypsum. The essence and theory of the method for obtaining a phosphor pigment from phosphogypsum, as well as the technological features of its production.


Author(s):  
C. J. Chan ◽  
K. R. Venkatachari ◽  
W. M. Kriven ◽  
J. F. Young

Dicalcium silicate (Ca2SiO4) is a major component of Portland cement. It has also been investigated as a potential transformation toughener alternative to zirconia. It has five polymorphs: α, α'H, α'L, β and γ. Of interest is the β-to-γ transformation on cooling at about 490°C. This transformation, accompanied by a 12% volume increase and a 4.6° unit cell shape change, is analogous to the tetragonal-to-monoclinic transformation in zirconia. Due to the processing methods used, previous studies into the particle size effect were limited by a wide range of particle size distribution. In an attempt to obtain a more uniform size, a fast quench rate involving a laser-melting/roller-quenching technique was investigated.The laser-melting/roller-quenching experiment used precompacted bars of stoichiometric γ-Ca2SiO4 powder, which were synthesized from AR grade CaCO3 and SiO2xH2O. The raw materials were mixed by conventional ceramic processing techniques, and sintered at 1450°C. The dusted γ-Ca2SiO4 powder was uniaxially pressed into 0.4 cm x 0.4 cm x 4 cm bars under 34 MPa and cold isostatically pressed under 172 MPa. The γ-Ca2SiO4 bars were melted by a 10 KW-CO2 laser.


Author(s):  
Chung-kook Lee ◽  
Yolande Berta ◽  
Robert F. Speyer

Barium hexaferrite (BaFe12O19) is a promising candidate for high density magnetic recording media due to its superior magnetic properties. For particulate recording media, nano-sized single crystalline powders with a narrow size distribution are a primary application requirement. The glass-crystallization method is preferred because of the controllability of crystallization kinetics, hence, particle size and size distribution. A disadvantage of this method is the need to melt raw materials at high temperatures with non-reactive crucibles, e.g. platinum. However, in this work, we have shown that crystal growth of barium hexaferrite occurred during low temperature heat treatment of raw batches.


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