Mechanical Properties of Epoxy Composites Filled with Short Steel Fibres for Hybrid Injection Moulds

2008 ◽  
Vol 587-588 ◽  
pp. 222-226 ◽  
Author(s):  
Aurélio C. Sabino-Netto ◽  
Gean V. Salmoria ◽  
Carlos H. Ahrens ◽  
António Sergio Pouzada
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Epoxy Composites ◽  
Particulate Composites ◽  
Mechanical And Thermal Properties ◽  
Fibre Reinforcement ◽  
Epoxy System ◽  
Steel Fibres ◽  
Hybrid Injection ◽  
Short Steel Fibres

Epoxide filled composites are being increasingly used for mouldings blocks of hybrid injection moulds. The filling is sought for improving both mechanical and thermal properties that are relevant for the mould performance. In spite of several works investigating the particulate filling of resins, there are only a few reports on fibre reinforcement. Composites based on an epoxy system with varying volume fractions of short steel fibres (SSF) were investigated. The mechanical properties were determined for each composite, and the topography of the fracture surfaces was analyzed by SEM. The mechanical properties of the epoxy filled composites were also compared to commercial particulate composites that are used for producing casting moulds. In spite of the SSF being more difficult to mix that the usual metal particulate fillers, it was found that the resulting composites show some improvement in the mechanical properties.

Characterization of Epoxy/Steel Fibres Composites for Hybrid Injection Moulds

2012 ◽  
Vol 730-732 ◽  
pp. 277-282 ◽  
Author(s):  
Janaina L. Leite ◽  
Gean V. Salmoria ◽  
Carlos H. Ahrens ◽  
António Sergio Pouzada
Keyword(s):  
Thermal Properties ◽  
Epoxy Resin ◽  
Optical Microscopy ◽  
Epoxy Matrix ◽  
Mechanical And Thermal Properties ◽  
Epoxy System ◽  
Steel Fibres ◽  
Hybrid Injection ◽  
Short Steel Fibres

Metallic fibres in polymeric matrix are used for mouldings blocks of hybrid injection moulds improving the mechanical and thermal properties. This paper reports on the characterization of epoxy resin/short steel fibres (SSF) composites. The effect of the concentration of 2,4,6-tris (dimethylamino-methyl) phenol as accelerator in the epoxy system was evaluated by viscosity and dynamical mechanical analyses. The composites were characterized by compression and microhardness tests. The fibres dispersion into the epoxy matrix was analysed by optical microscopy. It was found that the best accelerator concentration for this type of composite was 5,0 parts by weight

Surface modification of magnesium oxide/epoxy composites with significantly improved mechanical and thermal properties

2021 ◽  
Author(s):  
Muhammad Wasim Akhtar ◽  
Kim Jong Seok ◽  
Muddassir Ali Memon ◽  
Muhammad Yasir Khan ◽  
Muhammad Moazam Baloch
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Magnesium Oxide ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Neat Epoxy ◽  
Mechanical And Thermal Properties ◽  
Interconnected Network ◽  
Interfacial Bond ◽  
Mgo Nanoparticles

Abstract This paper demonstrated the effect of functionalized magnesium oxide (MgO) nanoparticles with 3-(Aminopropyl) triethoxysilane (APTES) as fillers on the mechanical and thermal properties of epoxy composite. The functionalization of MgO (S-MgO) considerably improved the inteface between the MgO and epoxy resin. The mechanical properties of the composites revealed that the addition of functionalized MgO improved their tensile strength, modulus of elasticity, and ductility when compared to neat epoxy. In compare to neat epoxy, the in-plane thermal conductivity of the epoxy composite with S-MgO filler improved by 10 folds. These observations indicated that the silane functionalization on MgO contributes to the formation of a strong interfacial bond and a compact interconnected network between the filler and the epoxy matrix.

scholarly journals Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3090
Author(s):  
Anita Ptiček Siročić ◽  
Ana Rešček ◽  
Zvonimir Katančić ◽  
Zlata Hrnjak-Murgić
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Water Vapor ◽  
Aluminum Oxide ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Mechanical And Thermal Properties ◽  
Oxide Compound ◽  
Bilayer Films ◽  
Oxide Particles

The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value.

The mechanical and thermal properties of graphitic carbon nitride ( g‐C 3 N 4 )‐based epoxy composites

2021 ◽  
pp. 51324
Author(s):  
Yasmine N. Baghdadi ◽  
Jihad Sinno ◽  
Kamal Bouhadir ◽  
Mohammad Harb ◽  
Samir Mustapha ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Epoxy Composites ◽  
Graphitic Carbon Nitride ◽  
Mechanical And Thermal Properties

The influence of adding long basalt fiber on the mechanical and thermal properties of composites based on poly(oxymethylene)

2018 ◽  
Vol 33 (4) ◽  
pp. 435-450 ◽  
Author(s):  
Patrycja Bazan ◽  
Stanisław Kuciel ◽  
Mariola Sądej
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Average Length ◽  
Flexural Modulus ◽  
Basalt Fiber ◽  
Charpy Impact ◽  
Mechanical And Thermal Properties ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Atr Spectroscopy

The work has evaluated the possibility of the potential reinforcing of poly(oxymethylene) (POM) by basalt fibers (BFs) and influence of BFs addition on thermal properties. Two types of composites were produced by injection molding. There were 20 and 40 wt% long BFs content with an average length of 1 mm. The samples were made without using a compatibilizer. In the experimental part, the basic mechanical properties (tensile strength, modulus of elasticity, strain at break, flexural modulus, flexural strength, and deflection at 3.5% strain) of composites based on POM were determined. Tensile properties were also evaluated at three temperatures −20°C, 20°C, and 80°C. The density and Charpy impact of the produced composites were also examined. The influence of water absorption on mechanical properties was investigated. Thermal properties were conducted by the differential scanning calorimetry, thermal gravimetric analysis, and fourier transform infrared (FTIR)-attenuation total reflection (ATR) spectroscopy analysis. In order to make reference to the effects of reinforcement and determine the structure characteristics, scanning electron microscopy images were taken. The addition of 20 and 40 wt% by weight of fibers increases the strength and the stiffness of such composites by more than 30–70% in the range scale of temperature. Manufactured composites show higher thermal and dimensional stability in relation to neat POM.

Surface functionalized boehmite sheets filled epoxy composites with enhanced mechanical and thermal properties

2014 ◽  
Vol 25 (12) ◽  
pp. 1604-1609 ◽  
Author(s):  
Tao Sun ◽  
Zhanjun Wu ◽  
Qin Zhuo ◽  
Xin Liu ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Epoxy Composites ◽  
Mechanical And Thermal Properties

scholarly journals Synthesis and Characterization of Natural Fibers Reinforced Fiber Epoxy Composites

2015 ◽  
Vol 51 ◽  
pp. 47-53
Author(s):  
U. Mahaboob Basha ◽  
D. Mohana Krishnudu ◽  
P. Hussain ◽  
K. Manohar Reddy ◽  
N. Karthikeyan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Natural Fibers ◽  
Epoxy Composites ◽  
Synthesis And Characterization ◽  
Mechanical And Thermal Properties ◽  
Epoxy System ◽  
Pennisetum Typhoides ◽  
The Matrix ◽  
Reinforced Fiber

In the current work epoxy resin is chosen as matrix, treated Sacharum offinarum ( SugarCane) fiber, Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler are chosen as reinforcement. Room temperature cured Epoxy System filled with Sacharum offinarum fiber and Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler are synthesised by mechanical shear mixer, then kept in a Ultra sonic Sonicator for better dispersion of Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler in the matrix. Different weights of modified Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler (1,2,3,4,5 gm wt) has been incorporated into the Epoxy matrix in order to study the variation of Mechanical and Thermal properties.

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