Influence of electromagnetic treatment of fillers on physical and chemical properties of the adhesive compositions for plywood manufacture

10.12737/4518 ◽  
2014 ◽  
Vol 4 (2) ◽  
pp. 135-144
Author(s):  
Бельчинская ◽  
Larisa Belchinskaya ◽  
Анисимов ◽  
Maksim Anisimov ◽  
Попов ◽  
...  
Keyword(s):  
High Frequency ◽  
Chemical Properties ◽  
Adhesive Layer ◽  
Internal Stresses ◽  
Pulsed Magnetic Fields ◽  
Electromagnetic Treatment ◽  
Adhesive Compositions ◽  
Reduction Of Emissions ◽  
Physical And Chemical ◽  
And Chemical Properties

During this work the reduction of emissions of free formaldehyde of the cured adhesive composition for the manufacture of environmentally friendly plywood is identified, through the introduction of pre-activated sorbent of fillers into its composition, as well as reducing internal stresses in the adhesive layer of the cured binder. The resulting effects are related with the use of adhesive formulations of different sorbents fillers subjected to preactivation in various electromagnetic fields (fields over high frequency and weak pulsed magnetic fields).

Zeolite filler, activated in electromagnetic fields, for the production of plywood

10.12737/2186 ◽  
2014 ◽  
Vol 3 (4) ◽  
pp. 94-102 ◽  
Author(s):  
Анисимов ◽  
Maksim Anisimov
Keyword(s):  
Shear Strength ◽  
Electromagnetic Fields ◽  
Adhesive Layer ◽  
Formaldehyde Emission ◽  
Pulsed Magnetic Fields ◽  
Optimal Processing ◽  
Adhesive Compositions ◽  
Processing Modes ◽  
Industrial Use ◽  
Reduction Of Emissions

In the course of this work the reduction of emissions of free formaldehyde from the finished plywood is identified, as well as an increase in shear strength to the adhesive layer. Obtained effects in the manufacture of plywood are due to the use of adhesive compositions using natural zeolite sorbent filler – clinoptilolite, previously activated in various electromagnetic fields (fields of over high frequency and weak pulsed magnetic fields). The optimal processing modes of minerals with electromagnetic fields are defined, providing an optimum ratio of values ​​of free formaldehyde emission levels and shear strength to the adhesive layer. The results indicate the possibility of industrial use of the developed techniques.

scholarly journals Особенности формирования фазового и элементного состава при электроискровом легировании ручным вибратором повышенной частоты

2021 ◽  
Vol 57 (6) ◽  
pp. 14-24
Author(s):  
A.V. Coval ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Frequency ◽  
Chemical Properties ◽  
Positive Influence ◽  
Physical And Chemical Properties ◽  
Electrospark Alloying ◽  
Chemical Analyses ◽  
Phase And Elemental Compositions ◽  
Physical And Chemical ◽  
And Chemical Properties

The phase and elemental compositions of electrospark coatings of nickel and titanium deposited on steel, nickel, and titanium, that is, coatings from TiNiMo-20 and WC92-Co8 on steel at high-frequency electrospark alloying are investigated. It is established that the material of the electrode, of the substrate, and the mode of deposition have the main impact on physical and chemical properties of the formed coatings. A positive influence of high-frequency alloying on quality indicators of the processed surfaces is shown. Both the phase and chemical analyses showed availability of the compounds considerably improving corrosion resistance of the processed surfaces. Alloying with WC92-Co8 electrodes at a high frequency makes it possible to obtain an increased content of tungsten carbide in the deposited layer.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Tailoring microstructures of materials through biomimetics

1993 ◽  
Vol 51 ◽  
pp. 500-501
Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Chemical Properties ◽  
Design And Synthesis ◽  
Structure Sensitive ◽  
Macro Scale ◽  
Methods Of Synthesis ◽  
Successive Level ◽  
Engineering Materials ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Synthesis Of Materials

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

THE IMPORTANCE OF THE RED BOOK OF SOILS FOR MONITORING AND JUSTIFICATION OF CONSERVATION MEASURES

2020 ◽  
Author(s):  
O.S. Bezuglova ◽  
Keyword(s):  
Chemical Properties ◽  
Natural State ◽  
Soil Maps ◽  
Rostov Region ◽  
Conservation Measures ◽  
Background Data ◽  
The Russian Federation ◽  
Physical And Chemical ◽  
And Chemical Properties

Rostov Region belongs to the highly protected natural territories characterized by the continuous plowing. There territories are the only reserves with the soils preserved in their natural state. However, these areas often lack detailed information about the soils quality and composition. Surveying soils on these territories is crucial for determination of their basic physical and chemical properties. The resulted compilation of soil maps could lay a foundation for creating the Red Book of Soils and the formation of a section in the soil-geographical database of the Russian Federation. Subsequently, such information can be used as a background data for the main types of soils in the region. It will be also valuable during monitoring and justification of conservation measures.

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