Evaluation of the Mechanical Behavior of Epoxy Matrix-Hybrid Natural Fabric Composite: Accelerated Aging by UV Radiation

2021 ◽  
pp. 409-416
Author(s):  
Clara Beatriz Melo Moreira Caminha ◽  
Michelle Souza Oliveira ◽  
Lucio Fabio Cassiano Nascimento ◽  
Sergio Neves Monteiro
Keyword(s):  
Mechanical Behavior ◽  
Uv Radiation ◽  
Epoxy Matrix ◽  
Accelerated Aging ◽  
Fabric Composite

scholarly journals INFLUENCE OF ENVIRONMENTAL FACTORS ON PHYSICAL-MECHANICAL PROPERTIES OF POLYDIMETHYL ETHER OF NORBORENE -2;3-DICARBOXYLIC ACID

2017 ◽  
Vol 60 (5) ◽  
pp. 68 ◽  
Author(s):  
Galina S. Bozhenkova ◽  
Alexandra N. Tarakanovskaya ◽  
Oksana D. Tarnovskaya ◽  
Roman V. Ashirov
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Hydrochloric Acid ◽  
Environmental Factors ◽  
Dicarboxylic Acid ◽  
Uv Radiation ◽  
Accelerated Aging ◽  
The Impact

The article is devoted to the production of polymer by metathesis ring-opening polymerization under the influence of ruthenium initiator of type of Hoveyda-Grubbs II generation. The monomer used the mixture of dimethyl ether norbornene-2;3-dicarboxylic acid. The monomer was prepared by the Diels-Alder reaction of dicyclopentadiene and dimethyl maleate. The polymer was prepared in bulk of the monomer mixture. In this paper we have studied the physical and mechanical properties polydimethyl ether of norbornene-2;3-dicarboxylic acid; and assessed the impact of environmental factors on the change in properties of the polymer. As environmental factors; light; UV radiation; water; 0.1 M hydrochloric acid were applied; and accelerated aging conditions; which were held in a climate chamber. During performance we found that maintaining the polymer samples in the UV light chamber led to the slight increase in flexural modulus. In contrast; the polymer storage in water and in a hydrochloric acid solution for two months resulted in a slight decrease in the modulus of elasticity in bending index. These factors did not affect the change in the glass transition temperature of the polymer. Under the conditions of accelerated aging conducted for 1; 2 and 6 days after two cycles we observed the drop in modulus for bending of 8.5%; after 6 cycles of 13%. The glass transition temperature of polydimethyl ether of norbornene-2;3-dicarboxylic acid after 6 cycles decreased by only 3.4% in the climatic chamber. Studies have shown that the resulting polymer is resistant to water; hydrochloric acid; light and UV radiation; as well as it saves properties at a sufficient level for operation at conditions of accelerated aging. It should be noted that the tested polymer was prepared without additives; stabilizers and antioxidants. The proposed polymer can be used as a structural material for machine parts; including bulky.For citation:Bozhenkova G.S.; Tarakanovskaya A.N.; Tarnovskaya O.D.; Ashirov R.V. Influence of environmental factors on physical-mechanical properties of polydimethyl ether of norborene -2;3-dicarboxylic acid. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 5. P. 68-73

INFLUENCE OF MULTIPLE CURING ON MECHANICAL PROPERTIES OF EPOXY MATRIX AND ITS ADHESION TO FIBERS

2021 ◽  
pp. 12-19
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Mechanical Behavior ◽  
Adhesive Strength ◽  
Epoxy Matrix ◽  
Steel Wire ◽  
Curing Temperature ◽  
The Matrix

Adhesive strength of «epoxy binder-steel wire» joints and the mechanical behavior of the binder during multiple repeated curing have been investigated. It is shown that when the curing temperature is considerably higher than the glass transition temperature of the binder, the adhesive strength decreases monotonically with an increase in the number of curing cycles. In this case the mechanical properties of the matrix also decrease. Possible mechanisms of the observed changes are discussed.

scholarly journals The dynamic-mechanical behavior of epoxy matrix composites reinforced with ramie fibers

2010 ◽  
Vol 15 (2) ◽  
pp. 164-171 ◽  
Author(s):  
Frederico Muylaert Margem ◽  
Sergio Neves Monteiro ◽  
Jarbas Bravo Neto ◽  
Rubén Jesus Sanchéz Rodriguez ◽  
Bluma Guenther Soares
Keyword(s):  
Mechanical Behavior ◽  
Epoxy Matrix ◽  
Matrix Composites ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Behavior ◽  
Ramie Fibers

Effect of moisture absorption on the mechanical behavior of carbon fiber/epoxy matrix composites

2012 ◽  
Vol 48 (5) ◽  
pp. 1873-1882 ◽  
Author(s):  
E. Pérez-Pacheco ◽  
J. I. Cauich-Cupul ◽  
A. Valadez-González ◽  
P. J. Herrera-Franco
Keyword(s):  
Carbon Fiber ◽  
Mechanical Behavior ◽  
Epoxy Matrix ◽  
Moisture Absorption ◽  
Matrix Composites ◽  
Effect Of Moisture ◽  
Carbon Fiber Epoxy
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