Hydrogenated butadiene-nitrile rubber elastomers: research of functional properties

2021 ◽  
pp. 128-135
Author(s):  
E. A. Khorova ◽  
E. N. Eremin ◽  
E. A. Strizhak
Keyword(s):  
Glass Transition ◽  
Elastic Modulus ◽  
Functional Properties ◽  
Loss Tangent ◽  
Mechanical Loss ◽  
Thermodynamic Compatibility ◽  
Modern Methods ◽  
Mechanical Loss Tangent ◽  
The Subject ◽  
Butadiene Nitrile Rubber

The subject of the study were rubbers based on partially and fully hydrogenated nitrile-butadiene rubbers (HNBR) Therban АТ 5065 VP and Therban АТ 5005 VP, taken individually and in the ratios 80:20, 70:30, 60:40, 50:50 accordingly. The purpose of the work was to study the functional properties of rubbers based on HNBR of various degrees of unsaturation using modern methods of analysis. The degree of dispersion of the filler and the thermodynamic compatibility of polymer components in rubbers based on Therban АТ 5065 VP and Therban АТ 5005 VP mixtures are appreciated. Glass transition and decomposition temperatures, elastic modulus and mechanical loss tangent of HNBR-based and their combined compositions were identified. The microrelief of the surface of rubber samples based on HNBR, taken in different ratios, was investigated.

scholarly journals Anisotropy of Mechanical Loss Tangent of Drawn Polyacrylonitrile Film

1968 ◽  
Vol 25 (274) ◽  
pp. 97-101
Author(s):  
Akio Takeuchi ◽  
Saburo Okajima
Keyword(s):  
Loss Tangent ◽  
Mechanical Loss ◽  
Mechanical Loss Tangent

scholarly journals A Pilot Study on the Relationship between Mechanical and Electrical Loss Tangents of Glass Powder Reinforced Epoxy Composites Post-Cured in Microwaves

2011 ◽  
Vol 214 ◽  
pp. 26-30
Author(s):  
Harry Ku ◽  
Peter Wong ◽  
Andrew Maxwell ◽  
J. Huang ◽  
H. Fung ◽  
...  
Keyword(s):  
Glass Transition ◽  
Thermal Properties ◽  
Glass Powder ◽  
Mechanical And Thermal Properties ◽  
Resin Composites ◽  
Mechanical Loss ◽  
Important Data ◽  
Mechanical Loss Tangent ◽  
The Relationship ◽  
Electrical Loss

The mechanical and thermal properties of hollow glass powder reinforced epoxy resin composites have been measured and evaluated in earlier studies. This basic but critical and important data have caused interests in the relevant industry in Australia. This study is therefore carried out to measure and evaluate the dielectric properties of the composites with a view to benefit the relevant industry. The relationship between the dielectric and thermal properties will also be studied and correlated. The original contributions of this paper are that samples post-cured in conventional ovens have higher electrical as well as mechanical loss tangent values than their counterparts cured in microwaves only. The storage modulus of all samples post-cured conventionally is higher than its counterpart. This is in line with the fact that they are softer material with lower glass transition temperatures. For all percentages by weight of glass powder, the glass transition temperature for the microwave cured sample was higher and the composite was stiffer; the opposite was true for the conventionally cured samples.

Effect of a Reinforcing Layer on the Mechanical Loss Tangent of Vibration-Absorbing Materials

2016 ◽  
Vol 43 (6) ◽  
pp. 33-38
Author(s):  
V.A. Sagomonova ◽  
V.I. Kislyakova ◽  
V.A. Bol'shakov ◽  
S.S. Dolgopolov
Keyword(s):  
Loss Tangent ◽  
Mechanical Loss ◽  
Absorbing Materials ◽  
Mechanical Loss Tangent ◽  
Reinforcing Layer
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