Investigation of the Compression and Dielectric strength properties for Epoxy/Polyurethane Blends reinforced with glass fibers

Jawad, Mohammed Kadhim

doi:10.22401/jnus.16.2.16

Cited by 7 publications

(4 citation statements)

References 16 publications

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“…Different concentrations of polyurethane were used (0%, 12.5%, 25%, 37.5% and 100%). The study showed that compressive strength increased and electrical insulation resistance decreased with increasing polyurethane ratios [6]. The present work aims to study the effect of temperature and natural filler volume fraction on the mechanical (impact strength and hardness) and physical properties (thermal conductivity) of a binary polymeric mixture consisting of epoxy resin with polyurethane.…”

Section: Introductionmentioning

confidence: 98%

Thermal and Natural Particles Addition Effects on the Mechanical and Physical Properties of Epoxy–Polyurethane Resin Blend Polymer

Rasheed¹,

Rasheed²,

Marhoon³

2018

EJERS

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In this study, natural particles were added to blend polymer resin. Composite material prepared from pistachio shells was added to epoxy–polyurethane blend polymer. The weight ratio of additive for liquid polyurethane to epoxy was 12 wt.%. In addition, their mechanical and physical properties were studied depending on a range of variables, such as temperature (25 °C, 35 °C, 45 °C and 55 °C) and volume fraction (3%, 6%, 9% and 12%). Hardness, impact strength and thermal conductivity were studied. Results showed that the impact strength was increased and that the hardness and thermal conductivity values were reduced at high temperatures. Meanwhile, the impact strength and hardness increased and the thermal conductivity values decreased with increased volume fracture of pistachio shells particles.

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Section: Introductionmentioning

confidence: 98%

Thermal and Natural Particles Addition Effects on the Mechanical and Physical Properties of Epoxy–Polyurethane Resin Blend Polymer

Rasheed¹,

Rasheed²,

Marhoon³

2018

EJERS

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“…This leads to an increase in compressive stress required for deforming the composite. In contrast to tensile load, where fibers in the direction of applying force have the most significant effect on increasing strength, fibers perpendicular to the direction of applied force have the most significant impact on increasing strength in compression [36].…”

Section: Figure 12mentioning

confidence: 87%

Enhancing Thermal, Viscoelastic, and Mechanical Properties of Silicone Rubber Matrix through Reinforcements for Use as a Medical Implant

Hatami Dehnou,

Hadianfard

2024

Recent Prog Mater

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The use of silicone rubber as an implant is limited due to its weak properties. In this study, the impact of various reinforcements, such as TiO2 or SiO2 nanoparticles, carbon, or polypropylene fiber micro reinforcements, on the mechanical, thermal, and viscoelastic properties of silicone rubber composites with RTV-4125 matrix was investigated. The composites were evaluated through several tests, including tensile, compression, FTIR, TGA, DMTA, and water adsorption tests. It was found that the composites' tensile strength and compressive stress were increased by adding reinforcements, with the most significant impact on tensile strength observed for SiO2 and the most notable effect on compressive stress at a strain of 0.5 observed for polypropylene fiber. Moreover, the water absorption of the matrix was increased with the addition of reinforcements, with the highest increase observed for Titania nanoparticles. TGA analysis showed that all composites had higher thermal stability than the plain matrix, with the highest degradation temperature observed for the SR-C fiber composite and the highest degradation rate observed for SR-TiO2. Additionally, DMTA analysis revealed that TiO2 nanoparticles considerably decreased the glass transition temperature of the matrix (%28.5), while the other reinforcements had a negligible effect on this temperature. The introduction of reinforcements had a positive impact on the mechanical, thermal, and viscoelastic properties of silicone rubber composites, and the findings of this study can contribute to the development of new and improved silicone rubber composites for implant applications.

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“…The combination of the high capability of rubber to deform in a non-destructive mode with the increased rigidity of epoxy generated by the highly cross-linked structure, especially when epoxy is blended with polyurethane, boosts the compressive strength to a higher level than pure epoxy [44].…”

Section: Compressive Strengthmentioning

confidence: 99%

Preparation of polymeric composite for antiskid flooring purpose

2023

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Three polymeric blends were prepared using epoxy, nitrile butadiene rubber (NBR), and polyurethanes (PU) to develop antiskid surfaces with the required mechanical properties. The optimum mixing ratio was decided according to the results of the coefficient of friction and impact tests. Mechanical properties, including wear, bending, compression, impact, hardness, and water uptake were measured. Scanning electron microscopy (SEM) was used to investigate the microscopic features. The results showed variations in the values of coefficient of friction for the three blends, where the epoxy/ NBR specimens showed the highest value of 0.81, followed by specimens of epoxy blended with the two types of commercial polyurethanes, Sikaflex™ and Sikaswell™ of 0.73 and 0.69; respectively. The highest wear rate was noticed for the epoxy/NBR specimen, while the epoxy+Sikaflex showed the lowest wear rate, compared to other specimens. The epoxy/Sikaflex also showed the highest values for hardness, compared with epoxy/sikaswell and epoxy/NBR; respectively. The resultant blends showed improved mechanical properties with high slipping resistance, which makes the prepared blends as potential alternatives compared to traditional flooring materials.

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Investigation of the Compression and Dielectric strength properties for Epoxy/Polyurethane Blends reinforced with glass fibers

Cited by 7 publications

References 16 publications

Thermal and Natural Particles Addition Effects on the Mechanical and Physical Properties of Epoxy–Polyurethane Resin Blend Polymer

Thermal and Natural Particles Addition Effects on the Mechanical and Physical Properties of Epoxy–Polyurethane Resin Blend Polymer

Enhancing Thermal, Viscoelastic, and Mechanical Properties of Silicone Rubber Matrix through Reinforcements for Use as a Medical Implant

Preparation of polymeric composite for antiskid flooring purpose

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