Improving the Fungus Resistance of Polymer Composites

2020 ◽  
Vol 299 ◽  
pp. 55-59
Author(s):  
Anna V. Yastrebinskaya ◽  
Larisa Yu. Matveeva ◽  
Alyona S. Edamenko
Keyword(s):  
Polymer Composites ◽  
Metallurgical Slag ◽  
Irganox 1010 ◽  
Hardened State ◽  
Polyester Composites ◽  
Mineral Waste

The problem under consideration is the fungus resistance of polymeric construction composites and their components: epoxy and polyester binders, as well as mineral waste in the form of dust from electric precipitators and metallurgical slag. It has been found that epoxy and polyester binders in unfilled and fully hardened state are not fungus resistant. But polymer composites completely filled both with mineral waste and mentioned above binders proved to be fungus resistant. It has been confirmed that the fungus resistance of polymer composites is determined both by the type of the binder and the type of the filler. To increase the fungus resistance of epoxy and polyester composites, the use of microadditives of tetraethoxysilane and Irganox 1010 has been proposed. It has been established that the addition of tetraethoxysilane and Irganox 1010 promotes the increase in fungus resistance of epoxy and polyester composites.

scholarly journals Experimental Research on Roselle / Glass Fibre Hybrid Polymer Composites

2019 ◽  
Vol 9 (1) ◽  
pp. 4665-4669
Keyword(s):  
Composite Materials ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Experimental Research ◽  
Glass Fibre ◽  
Hybrid Polymer ◽  
Lower Volume ◽  
Polyester Composites ◽  
The Impact

Varieties in tractable and sway properties of Roselle fiber strengthened polyester composites brought about by the expansion of glass fiber have been investigated. Roselle fiber in mix with glass is magnificent for making economically savvy composite materials. The impact of the plan of glass and Roselle fiber in the readiness of composites have likewise been examined. Direct increment in rigidity is noted because of the expansion of glass. Be that as it may, when lower volume portion of glass is utilized, a cozy blend of Roselle fiber and glass demonstrates the most elevated rigidity. The effect quality demonstrates the most noteworthy worth when a glass volume part of 0.12 is utilized

scholarly journals Thermal Conductivity and Flammability Analysis on Coconut Sheath Reinforced Polyester Composites

2019 ◽  
Vol 9 (2S2) ◽  
pp. 556-561
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Hybrid Composite ◽  
Application Field ◽  
Important Study ◽  
Polyester Composites

Thermal conductivity is very important study done for the polymer composites towards characterizing the application field in recent days. Present work, thermal conductivity along the thickness is experimented. Flammability for the fabricated composites through accelerated and natural burning is studied and reported. Composites are prepared under compression for varying reinforcement type. Hybrid composite are also produced and compared with the properties of the virgin composites.

scholarly journals The Choice of Recycling Methods for Single-Polymer Polyester Composites

2018 ◽  
Vol 55 (4) ◽  
pp. 658-665 ◽  
Author(s):  
Katarzyna Gawdzinska ◽  
Marcin Nabialek ◽  
Andrei Victor Sandu ◽  
Katarzyna Bryll
Keyword(s):  
Molecular Weight ◽  
Tensile Strength ◽  
Polymer Composites ◽  
Injection Moulding ◽  
Average Molecular Weight ◽  
Impact Resistance ◽  
Mass Fractions ◽  
Weight Impact ◽  
Polyester Composites ◽  
Work Done

This work has described the production of single-polymer composites by the film-stacking method. Two types of single-polymer composites with different mass fractions of the polyester reinforcement phase (10% and 20%) and the PETG matrix were investigated. The produced composites were subsequently recycled by injection moulding, pressing, and extrusion. Selected properties of the processed composites were determined: density, viscosity-average molecular weight, impact resistance, and tensile strength. The work done in this paper has demonstrated the benefits and drawbacks of each recycling method for these materials. The selected properties of single-polymer polyester composites and single-polymer polyester composites that were recycled by extrusion have also been compared.

scholarly journals PREPARATION OF POLYMER COMPOSITES BASED ON UNSATURATED POLYESTER REINFORCED BY NATURAL FIBER AND CELLULOSE MICROFIBER FROM LUNG WASTE IN NGHE AN

2018 ◽  
Vol 54 (2C) ◽  
pp. 366
Author(s):  
Cao Xuan Cuong
Keyword(s):  
Glass Fiber ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Hybrid Composite ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Fatigue Cycle ◽  
Tensile Fatigue ◽  
Polyester Composites

Unsaturated polyester composites reinforced by glass fiber and by hybrid reinforcementglass fiber - lung fiber with cellulose microfiber (MFC) were prepared and investigated. Tensileand flexural strengths of material reached the highest value at polymer composite with 48 %wglass fiber mat and 0.3 %w MFC (208.33 MPa and 243.6 0 MPa), while the highest impactstrength reached 212.48 kJ/m2 at composite containing 48 %w glass fiber but 0.5 %w MFC.Especially, with 0.3 %w MFC, the tensile fatigue cycle to failure of composite processed byvacuum bag remarkably increased, 140.28 % at composite with 48 %w glass fiber and 265.63 %at hybrid composite reinforced by glass fiber/lung fiber, compared to samples without MFC.

scholarly journals Experimental Investigation on Mechanical Properties of A/GFRP, B/GFRP and AB/GFRP Polymer Composites

2022 ◽  
Vol 58 (4) ◽  
pp. 28-36
Author(s):  
Velmurugan Natarajan ◽  
Ravi Samraj ◽  
Jayabalakrishnan Duraivelu ◽  
Prabhu Paulraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Fiber Reinforced ◽  
Gfrp Composites ◽  
Glass Fiber Reinforced ◽  
Structural Applications ◽  
Polyester Composites

This study aims to reveal the consequence of thickness reinforcement on Fiber Laminates (Polyester Resin, Glass Fiber, Aluminum, and Bentonite) and to see if it can enhance the mechanical properties and resistance of laminates. Glass fiber reinforced polymer composites have recently been used in automotive, aerospace, and structural applications where they will be safe for the application s unique shape. Hand layup was used to fabricate three different combinations, including Aluminium /Glass fiber reinforced polyester composites (A/GFRP), Bentonite/Glass fiber reinforced polyester composites (B/GFRP), and Aluminium&Bentonie/Glass fiber reinforced polyester composites (AB/GFRP). Results revealed that AB/GFRP had better tensile strength, flexural strength, and hardness than GFRP and A/GFRP. Under normal atmospheric conditions and after exposure to boiling water, hybrid Aluminium&Bentonite and glass fiber-reinforced nanocomposites have improved mechanical properties than other hybrid composites. After exposure to temperature, the flexural strength, tensile strength and stiffness of AB/GFRP Composites are 40 % higher than A/GFRP and 17.44% higher than B/GFRP Composites.

Fabrication and Mechanical Characterization of Walnut/Polyester Composites

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Vipul Sharma ◽  
Rajiv Kumar ◽  
Karan Vohra ◽  
Kapil Chopra
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Polymer Composites ◽  
Mechanical Characterization ◽  
Fuel Efficiency ◽  
Natural Fibres ◽  
Walnut Shell ◽  
Reinforced Composites ◽  
Polyester Composites

Use of natural fibres as reinforcement in polymeric composites has been increased during last few decades. They are potential alternatives to synthetic fibres due to their excellent properties like light in weight, biodegradable, abundant, satisfactory strength etc. Various parts of automobiles are being made by natural fibres that improved fuel efficiency and reduced emissions. The present study focuses on developing new polymer composites by reinforcing walnut shell particulate on the basis of different weight fractions. Mechanical characterization was done for the developed composites which include evaluation of tensile strength, impact strength and hardness. Different weight fractions of walnut shell particulate were used including 0%, 10%, 15% and 20%. Maximum tensile strength was achieved in case of 10% walnut shell reinforced composites. Maximum impact strength and hardness were achieved in case of 20% and 15% reinforcement respectively.

Self-Compacting and Conventional Concrete with Mineral Waste: Fresh and Hardened State Properties

2012 ◽  
Vol 517 ◽  
pp. 547-555 ◽  
Author(s):  
Edgar Bacarji ◽  
V.C. Marques ◽  
Romildo Dias Toledo Filho
Keyword(s):  
Attractive Alternative ◽  
Self Compacting Concrete ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Environmental Preservation ◽  
State Tests ◽  
Fine Aggregates ◽  
Alternative Materials ◽  
Hardened State ◽  
Mineral Waste

Environmental preservation has been a theme debated in virtually every country in the world. Many measures are being taken to reduce the environmental impact due to unplanned development. Growing environmental restrictions to the exploitation of sand from riverbeds have resulted in a search for alternative materials to produce fine aggregates, particularly near to larger metropolitan areas. Artificial fine aggregates then appear as an attractive alternative to natural fine aggregates for concrete. This work is the final part of a study about the use of residues in concretes. Conventional Concrete (CC) and Self-compacting concrete (SCC) were developed replacing the natural sand by two types of mineral waste. Fresh state tests such as slump-flow, L-box, V-funnel test and column test were performed according to the Brazilian standards. The rheological characteristics (yield stress and plastic viscosity) of the SCC were determined using the BTRHEOM rheometer. At the hardened state, compressive strength was determined at 3, 14 and 28 days of age. Modulus of elasticity test was carried out at 28 days. Curves to mixture design were obtained to SCC and CC. For all mixtures and properties analyzed the good performance of the mineral waste used was proven. Finally and more important, it was demonstrated that it is possible to obtain structural self-compacting concrete, self-compacting concrete without structural purposes and conventional concrete by using mineral waste that works like fine aggregates and that on the other hand, without any destination, would cause serious environmental impacts.

scholarly journals Further Progress in Functional Interlayers with Controlled Mechanical Properties Designed for Glass Fiber/Polyester Composites

Fibers ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 58 ◽  
Author(s):  
Antonin Knob ◽  
Jaroslav Lukes ◽  
Lawrence Drzal ◽  
Vladimir Cech
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Polymer Matrix ◽  
High Performance ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
High Performance Polymer ◽  
Polyester Composites

Compatible interlayers must be coated on reinforcing fibers to ensure effective stress transfer from the polymer matrix to the fiber in high-performance polymer composites. The mechanical properties of the interlayer, and its interfacial adhesion on both interfaces with the fiber and polymer matrix are among the key parameters that control the performance of polymer composite through the interphase region. Plasma-synthesized interlayers, in the form of variable materials from polymer-like to glass-like films with a Young’s modulus of 10–52 GPa, were deposited on unsized glass fibers used as reinforcements in glass fiber/polyester composites. Modulus Mapping (dynamic nanoindentation testing) was successfully used to examine the mechanical properties across the interphase region on cross-sections of the model composite in order to distinguish the fiber, the interlayer, and the modified and bulk polymer matrix. The interfacial shear strength for plasma-coated fibers in glass fiber/polyester composites, determined from the microindentation test, was up to 36% higher than those of commercially sized fibers. The effects of fiber pretreatment, single and double interlayers, and post-treatment of the interlayer on interfacial shear strength were also discussed. Functional interlayers with high shear yield strength and controlled physicochemical properties are promising for high-performance polymer composites with a controlled interphase.

Evaluation of Mechanical Properties of Polyester Composite with Graphene and Graphite through Three-Point Bending Test

2014 ◽  
Vol 659 ◽  
pp. 22-27 ◽  
Author(s):  
Marian Bastiurea ◽  
Magdalena Silvia Rodeanu ◽  
Dumitru Dima ◽  
Monica Murarescu ◽  
Gabriel Andrei
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Electrical Properties ◽  
Polymer Composites ◽  
Bending Test ◽  
Bending Tests ◽  
Three Point Bending ◽  
Polyester Composite ◽  
Thermal And Electrical Properties ◽  
Polyester Composites

Graphenes have aroused great interest among the scientists lately, due to their special physical properties which are supposed to be transferred to composite materials [1,2,3,6]. Some polymers show low mechanical properties which can be improved by adding various types of materials [9,13]. Using nanoparticles, an enhancement of mechanical, thermal and electrical properties can be obtained, even for small contents of additives [10,11,12,14,15,16]. The evaluation of mechanical properties of polymer composites with graphene can be achieved relying on the three-point bending tests [4]. This work presents a few conclusions resulting from the three points bending tests of the polyester composites with graphene and graphite [7,8].

Mechanical Characterization of Roselle and Sisal Fibre Reinforced Polymer Composites

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
T. Vinod Kumar ◽  
M. Chandrasekaran ◽  
P. Vivek ◽  
S. Arunkumar ◽  
S. Padmanabhan
Keyword(s):  
Polymer Composites ◽  
Mechanical Characterization ◽  
Alkali Treatment ◽  
Natural Fibre ◽  
Theoretical Modelling ◽  
Sisal Fibre ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Polyester Composites

This paper details the mechanical characterization of natural fibre reinforced polymer composites. This includes the laboratory works such as tensile, flexural and impact tests. The samples of randomly oriented Roselle and Sisal fibre reinforced polyester composites were prepared for the laboratory tests. Theoretical modelling of the composites and calculation of the properties are also presented. The effect of alkali treatment of the fibre on the characteristics of the composite is also included. The results obtained are compared on various aspects to obtain a better performing composite.

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