A study regarding friction behaviour of lysine and isoleucine modified epoxy matrix

Epoxy resins have been presenting a lot of scientific and technical interests and organic modified epoxy resins have recently receiving a great deal of attention. For obtaining the composite materials with good mechanical proprieties, a large variety of organic modification agents were used. For this study gluten and gelatin had been used as modifying agents thinking that their dispersion inside the polymer could increase the polymer biocompatibility. Equal amounts of the proteins were milled together and the obtained compound was used to form 1 to 5% weight ratios organic agents modified epoxy materials. To highlight the effect of these proteins in epoxy matrix mechanical tests as three-point bending and compression were performed.

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PPG-Terminated Tetra-Carbamates as the Toughening Additive for Bis-A Epoxy Resin

Polymers ◽

10.3390/polym11091522 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1522

Author(s):

Ming Zhang ◽

Mingqing Chen ◽

Zhongbin Ni

Keyword(s):

Epoxy Resin ◽

Epoxy Matrix ◽

Microphase Separation ◽

Intramolecular Interactions ◽

Hexamethylene Diisocyanate ◽

Separation Mechanism ◽

Toughening Mechanism ◽

The Impact ◽

Modified Epoxy ◽

Epoxy Systems

We synthesized PPG-terminated tetra-carbamates as a new toughening additive for epoxy thermosets through facile addition reaction of hexamethylene diisocyanate (HDI) with poly(tetra-methylene glycols) (PTMG) and poly(propylene glycols) (PPG). The effects of prepared tetra-carbamates on the rheological behavior of neat epoxy resin were studied along with the various cured properties of their modified epoxy systems. Four carbamate groups (–NHCOO–) endow the prepared additives not only with good intramolecular interactions, but also with optimal intermolecular interactions with epoxy polymers. This results in the suitable miscibility of the additives with the epoxy matrix for the formation of the typical biphasic structure of microparticles dispersed in the epoxy matrix via polymerization-induced microphase separation. The impact strength and critical stress concentration factor (KIC) of cured modified epoxy systems with the additives are significantly higher than those of unmodified epoxy systems, without sacrificing the processability (Tg) and flexural strength. The toughening mechanism is understood as a synergism combination among the phase separation mechanism, the in situ homogeneous toughening mechanism, and the particle cavitation mechanism.

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Improved Interlaminar Shear Behaviour of a New Hybrid Kevlar/Cocos Nucifera Sheath Composites with Graphene Nanoplatelets Modified Epoxy Matrix

Fibers and Polymers ◽

10.1007/s12221-019-3127-z ◽

2019 ◽

Vol 20 (8) ◽

pp. 1749-1753 ◽

Cited By ~ 5

Author(s):

J. Naveen ◽

M. Jawaid ◽

E. S. Zainudin ◽

Mohamed T. H. Sultan ◽

R. Yahaya

Keyword(s):

Epoxy Matrix ◽

Cocos Nucifera ◽

Graphene Nanoplatelets ◽

Shear Behaviour ◽

Interlaminar Shear ◽

Modified Epoxy

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Improved bonding between PAN-based carbon fibers and fullerene-modified epoxy matrix

Composites Part A Applied Science and Manufacturing ◽

10.1016/j.compositesa.2008.08.005 ◽

2008 ◽

Vol 39 (11) ◽

pp. 1762-1767 ◽

Cited By ~ 67

Author(s):

Zhenyu Jiang ◽

Hui Zhang ◽

Zhong Zhang ◽

Hideki Murayama ◽

Keiji Okamoto

Keyword(s):

Carbon Fibers ◽

Epoxy Matrix ◽

Modified Epoxy

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The Thermal Behavior of Hybrid Fabric Reinforced Composites with Stratified Filled Epoxy Matrix

Materiale Plastice ◽

10.37358/mp.18.2.4986 ◽

2018 ◽

Vol 55 (2) ◽

pp. 161-167

Author(s):

Victorita Stefanescu ◽

Ana Boboc ◽

A. Cojan ◽

R. Bosoanca ◽

cristian Muntenita ◽

...

Keyword(s):

Thermal Expansion ◽

Thermal Properties ◽

Epoxy Matrix ◽

Hybrid Composites ◽

Epoxy Composites ◽

Glass Fabric ◽

Reinforced Composites ◽

Specific Density ◽

Modified Epoxy ◽

Hybrid Fabric

In this research, the thermal performance of the hybrid composites with modified epoxy matrix was investigated. The results were compared with those presented by the hybrid composites with homogeneous epoxy matrix. For understand the effects of the replacement of lower specific density glass fabric by higher specific density glass fabric, the thermal properties of the hybrid epoxy composites were determined by comparison to the thermal results of composites reinforced with lower specific density glass fabric with those of the hybrid epoxy materials reinforced with higher specific density glass fabric. Also, the effects on the specific heat and thermal expansion coefficient of the used fabric types in outer sheets of the composites were studied.

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Processing Of Glass Fiber Pultruded Composites Using Graphene Nanoplatelets Modified Epoxy Matrix

Materials Today Proceedings ◽

10.1016/j.matpr.2019.07.237 ◽

2019 ◽

Vol 18 ◽

pp. 3298-3304 ◽

Cited By ~ 1

Author(s):

Mihir Ojha ◽

Pavan Kumar Penumakala ◽

Gayatri Vineela Marrivada ◽

Phaneendra Kiran Chaganti ◽

Amit Kumar Gupta

Keyword(s):

Glass Fiber ◽

Epoxy Matrix ◽

Graphene Nanoplatelets ◽

Modified Epoxy ◽

Pultruded Composites

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Morphology and Properties of Carbon Nanotubes Modified Epoxy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.918 ◽

2011 ◽

Vol 284-286 ◽

pp. 918-922

Author(s):

Xiao Lan Hu ◽

Wen Hao Wang ◽

Rong Lu Yu ◽

Gang Liu ◽

Teng Fei Lu

Keyword(s):

Carbon Nanotubes ◽

Thermal Properties ◽

Epoxy Resin ◽

Optical Microscopy ◽

Epoxy Matrix ◽

Amino Group ◽

Matrix Composites ◽

Elementary Analysis ◽

Nanotube Dispersion ◽

Modified Epoxy

Multi-walled carbon nanobutes (MWNTs) reinforced epoxy resin nanocomposites were fabricated by functionalizing the MWNTs with amino group. The functionlization of MWNTs was characterized by FTIR, elementary analysis, and TEM, and the MWNTs dispersion was characterized by optical microscopy and SEM. MWNTs functionalization with ethylene diamine improved the nanotube dispersion in the epoxy matrix composites. The dynamic mechanical thermal properties and thermal properties of MWNTs/epoxy nanocomposites are briefly discussed in terms of the MWNT loading and dispersion.

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