scholarly journals Influence of the quality of compounds on the adhesion properties of metal cord.

2020 ◽  
pp. 36-41
Author(s):  
O. N. Khrol
Keyword(s):  
Adhesion Strength ◽  
Adhesive Strength ◽  
Adhesion Properties ◽  
Metal Cord ◽  
Comparative Tests ◽  
Vulcanized Rubber ◽  
Strength Tests

The adhesive strength of the metal cord, i. e. the strength of its adhesion to the compound, is one of the most important indicators of the quality of the metal cord. Increasing the amount of adhesive strength allow to improve the performance of finished tires.Determination of the adhesive strength value can be performed by different methods. All methods are based on extracting (pulling) metal cord from a block of vulcanized rubber and fixing the required load. Each method has its own characteristics that affect the amount of adhesive strength. Therefore, when conducting comparative tests, it is necessary to use one of the selected methods.The study of factors that affect the amount of adhesive strength is necessary to identify the causes that lead to its change.The article analyzes how the quality of the used compound affects the adhesive strength. Tests with the use of compounds with various defects were considered and carried out; probable factors leading to deviations in the adhesion strength indicators were determined.

The Qualitative Assessment of Gas-Thermal Coating’s Cohesive Strength Estimation Methods

2020 ◽  
Vol 299 ◽  
pp. 949-954
Author(s):  
V.I. Kretinin ◽  
Victoria Alexandrovna Sokolova ◽  
S.A. Voinash
Keyword(s):  
Cross Section ◽  
Adhesion Strength ◽  
Adhesive Strength ◽  
Qualitative Assessment ◽  
Estimation Methods ◽  
Theoretical Computation ◽  
Theoretical Justification ◽  
Advantages And Disadvantages ◽  
Strength Tests

In this article the various methods of assessment of gas-thermal coating’s adhesion strength are considered. The methodology of carrying out the strength tests, using traditional methods of quantitative assessment of adhesive strength of a coating towards its basement, is reflected; the advantages and disadvantages of the represented methods are given. In the article, the theoretical justification of the mechanics of adhesive avulsion is given, and the imperfection of conic pins’ usage is shown. Aiming at increasing of the accuracy and quality of the strength tests of gas-thermal coatings, a modernised methodology, as well as the samples (а.с.1436025), related to detection of the adhesion strength, are suggested. The theoretical computation of the reasonableness of usage of ring cross section of the coating, resulted in the event of usage of the offered sample, is given. On the basis of theoretical computation, a defining formula of the adhesive strength is conducted. Comparison tests of adhesion strength with various sample’s designs are completed. The reasonableness and effectiveness of usage of the offered methodology in assessment of gas-thermal coating’s adhesion strength are proven.

scholarly journals The dependence of the adhesive properties of the steel cord from the different test methods and application of various compounds

2019 ◽  
pp. 83-88
Author(s):  
O. N. Khrol
Keyword(s):  
Adhesive Strength ◽  
Test Methods ◽  
Adhesive Properties ◽  
Metal Cord ◽  
Factors Affecting ◽  
Steel Cord

One of the most important indicators of the quality of the metal cord is the strength of its adhesion to the compound, i.e. adhesive strength. This is due to the fact that the value of adhesive strength significantly affects the performance of tires.The article analyzes how the use of different test methods could determine the adhesive strength and the use of compounds of different consumers affect the amount of adhesion of the metal cord. Three methods of testing of different consumers are considered and compared, the features of each method are revealed. Tests were carried out using different methods and compounds of different consumers; the factors affecting the value of adhesive strength were determined.

Alban Berg

2017 ◽  
Author(s):  
Helen Abbott
Keyword(s):  
Adhesion Strength ◽  
String Quartet ◽  
Large Scale ◽  
Statistical Data ◽  
Alban Berg ◽  
German Translation ◽  
Stefan George ◽  
Strength Tests ◽  
Parallel Texts

When Austrian composer Alban Berg was working on his opera Lulu, he wrote three Baudelaire songs as a Konzertaria entitled Der Wein. Premiered in 1930, Der Wein is a large-scale work for voice and orchestra. Berg uses a German translation by Stefan George, but the published score is in parallel texts, accommodating the French verse line. The chapter also considers a ‘hidden’ Baudelaire setting from Berg’s 1926 Lyric Suite for string quartet. The analysis covers: (a) the context of composition; (b) the connections established between selected poems; (c) the statistical data generated from the adhesion strength tests; and (d) how the data shape an evaluation of Berg’s settings of Baudelaire. Evidence suggests that Berg’s settings of Baudelaire are loosely entangled; the highly prescriptive score affects syntax, semantics, and prosody. Yet, because Der Wein has stood the test of time, the settings are deemed loosely accretive.

Louis Vierne

2017 ◽  
Author(s):  
Helen Abbott
Keyword(s):  
Adhesion Strength ◽  
Statistical Data ◽  
Semantic Interpretation ◽  
Strength Tests ◽  
Poetic Vision

Organiste-titulaire of Notre-Dame de Paris for nearly forty years, Louis Vierne composed over sixty songs, including a set of five Baudelaire songs, Cinq Poèmes de Baudelaire, published in 1921. This analysis covers: (a) the context of composition; (b) the connections established between selected poems; (c) the statistical data generated from the adhesion strength tests; and (d) how the data shape an evaluation of Vierne’s settings of Baudelaire. Findings reveal how the poetic line is minimally disrupted in these songs, as the vocal line remains very independent of the piano. As a result, the bonds between poem and music are largely abhesive, which means it is possible to recover the poem intact from the song score. As complex mélodies, the lack of interference with the fabric of Baudelaire’s versification, together with limited musical-semantic interpretation, means that Vierne’s music remains attentive towards Baudelaire’s poetic vision, offering an accretive outcome overall.

Effect of styrene–butadiene–styrene content on the adhesion properties of bitumen before and after heat aging

2008 ◽  
Vol 35 (5) ◽  
pp. 454-460 ◽  
Author(s):  
Krzysztof Zieliński
Keyword(s):  
Adhesion Strength ◽  
Test Results ◽  
Adhesion Properties ◽  
Before And After ◽  
Styrene Content ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Steel Substrates ◽  
Butadiene Styrene

This article describes the effect of heat aging and styrene–butadiene–styrene (SBS) content in bitumen on the adhesion properties of mastics (bitumen-filler mix) to concrete and steel substrates. Test results showed that the adhesion strength of bituminous mastics to concrete and steel substrates decreased as the SBS content increased. Bitumen types modified with 9%–12% of SBS, commonly used in waterproofing materials, showed an approximately three times weaker bond with concrete and steel substrates than the nonmodified equivalents. Results also showed that after heat aging, the adhesion strength of the nonmodified bitumen was always higher than that of the unheated bitumen modified with 9%–12% of SBS.

Chemical Structure of Vulcanized Rubber

1939 ◽  
Vol 12 (1) ◽  
pp. 43-55
Author(s):  
J. R. Brown ◽  
E. A. Hauser
Keyword(s):  
Chemical Structure ◽  
Empirical Knowledge ◽  
Extensive Investigation ◽  
Practical Application ◽  
True Nature ◽  
Rubber Industry ◽  
Vulcanized Rubber ◽  
Metallic Salts ◽  
Other Substances

Abstract A CENTURY ago, Charles Goodyear in America and Th. Hancock in England found that the properties of crude rubber could be greatly improved by heating it with sulfur. The product resulting was more elastic, more resistant to tear and abrasion, less affected by solvents, and decidedly less thermoplastic. The treatment of rubber to give these desired properties is known generally as vulcanization and must be considered as the basis for the enormous growth of the rubber industry and the extensive use of rubber products in our everyday life. Broadly speaking, vulcanization involves the reaction, in some fashion, of sulfur with rubber. Extensive investigation has revealed other substances, such as benzoyl peroxide or polynitrobenzenes, which can transform rubber into a “vulcanized” condition. Experience has also shown that metallic salts of zinc or lead and especially certain organic compounds called “accelerators” greatly affect the rate of vulcanization, and these are favorably employed in practice. A vast amount of empirical knowledge has been gained which has greatly improved the practical application of vulcanization and the quality of rubber products, but which has failed as yet to reveal a complete picture of the true nature of the process.

scholarly journals Dental adhesive strength tests

2018 ◽  
Author(s):  
Agnieszka Łagoda ◽  
Adam Niesłony
Keyword(s):  
Adhesive Strength ◽  
Dental Adhesive ◽  
Strength Tests

scholarly journals Effects of Dehydroepiandrosterone and Atamestane Supplementation on Frailty in Elderly Men

2006 ◽  
Vol 91 (10) ◽  
pp. 3988-3991 ◽  
Author(s):  
Majon Muller ◽  
Annewieke W. van den Beld ◽  
Yvonne T. van der Schouw ◽  
Diederick E. Grobbee ◽  
Steven W. J. Lamberts
Keyword(s):  
Controlled Trial ◽  
Hormone Replacement ◽  
Subjective Quality Of Life ◽  
Double Blind ◽  
Specific Test ◽  
Age Related ◽  
Strength Tests ◽  
Leg Extensor Power ◽  
General Community

Abstract Background: It has been suggested that the age-related decline of androgens in men plays a distinct role in the development of several aspects of frailty. Therefore, hormone replacement might improve the course of frailty by increasing lean body mass and muscle strength, decreasing fat mass, and improving the subjective quality of life. Objective: The objective of the study was to assess whether hormone replacement with dehydroepiandrosterone (DHEA) and/or atamestane might improve the course of frailty. Design: This was a double-blind, randomized, controlled trial. Setting: The study was conducted in the general community. Participants: Participants included 100 nonhospitalized, nondiseased, independently living men, aged 70 yr and over with low scores on strength tests. Seventeen participants did not complete the trial. Intervention: Subjects were randomly assigned to one of four intervention arms: atamestane (100 mg/d) and placebo, DHEA (50 mg/d) and placebo, a combination of atamestane (100 mg/d) and DHEA (50 mg/d), or two placebo tablets for 36 wk. Main Outcome Measures: Physical frailty was measured by means of a specific test battery, including isometric grip strength, leg extensor power, and physical performance. Results: The randomization was successful, and 83 (83%) men completed the intervention. There were no differences between the treatment arms and placebo group in any of the outcome measurements after intervention. Conclusions: The results of this double-blind, randomized trial do not support the hypothesis that hormone replacement with DHEA and/or atamestane might improve the course of frailty.

scholarly journals METHODS FOR IMPROVING THE ADHESION PROPERTIES OF BITUMENS TO MINERAL MATERIALS

2020 ◽  
pp. 29-35
Author(s):  
Н. А. Страхова ◽  
П. С. Цамаева ◽  
А. А. Эльмурзаев
Keyword(s):  
Atmospheric Oxygen ◽  
Experimental Studies ◽  
Effect Of Temperature ◽  
Volatile Components ◽  
Processing Plant ◽  
Adhesion Properties ◽  
Gas Phases ◽  
Gas Processing ◽  
Petroleum Bitumen

Статья посвящена анализу и изучению различных способов получения нефтяных битумов и улучшения адгезионных свойств в различных минеральных материалах. На примере Астраханского газоперерабатывающего завода показана эффективность добавления присадок - азот-, серосодержащих веществ, элементной серы и др. для улучшения адгезионных свойств битумов к минеральным материалам. Проведен анализ воздействия перепада температур в летнее и зимнее время на вяжущие свойства битумов. Рассмотрен способ предварительной отгонки летучих компонентов из нефтей, что приводит к уменьшению содержания парафинонафтеновых углеводородов и улучшению качества получаемых битумов. В статье также приведены результаты экспериментальных исследований влияния окисления кислородом воздуха, повышения температуры процесса на пластичность битумов. Эффективность окисления битумов зависит от величины поверхности контакта между жидкой и газовой фазой. Ускорение процесса окисления достигается в 6-7 раз при хорошем перемешивании реагирующих фаз. The article also presents the results of experimental studies of the effect of oxidation with atmospheric oxygen, an increase in the process temperature on the plasticity of bitumen. The efficiency of bitumen oxidation depends on the size of the contact surface between the liquid and gas phases. Acceleration of the oxidation process is achieved 6-7 times with good mixing of the reacting phases.The article is devoted to the analysis and study of various methods of obtaining petroleum bitumen and improving the adhesion properties in various mineral materials. Using the example of the Astrakhan gas processing plant, the effectiveness of the addition of additives - nitrogen-, sulfur-containing substances, elemental sulfur, etc. - to improve the adhesion properties of bitumen to mineral materials is shown. The analysis of the effect of temperature differences in summer and winter on the binding properties of bitumen is carried out. A method for preliminary stripping of volatile components from oils is considered, which leads to a decrease in the content of paraffin-naphthenic hydrocarbons and an improvement in the quality of the obtained bitumen.

Methodology for determining of adhesion strength of polymeric hardening-curing composite materials and adhesive join

2021 ◽  
pp. 181-183
Author(s):  
A.M. Mikhal’chenkov ◽  
I.V. Kozarez ◽  
S.A. Fes’kov ◽  
M.A. Mikhal’chenkova
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Adhesion Strength ◽  
Adhesive Strength ◽  
Adhesive Joints ◽  
Breaking Force ◽  
Force Moment

The developed technique for determining the adhesive strength allows us to study both adhesive polymer composites and adhesive joints on the same device without the influence of the breaking force moment on the results obtained.

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