Effect of Microwave Irradiation at Different Stages of Manufacturing Unsaturated Polyester Nanocomposite

Shcherbakov, Andrey; Mostovoy, Anton; Bekeshev, Amirbek; Burmistrov, I. S.; Арзамасцев, С. В.; Lopukhova, Marina

doi:10.3390/polym14214594

Cited by 13 publications

(10 citation statements)

References 32 publications

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“…By combining straw and mud to create a mixture, bricks with improved resistance to squeezing and tearing can be made. These bricks are suitable for use as building blocks [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Stacking Sequence on Mechanical Properties of Basalt/Ramie Biodegradable Hybrid Polymer Composites

et al. 2023

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In this study, the mechanical properties of basalt/ramie/polyester hybrid composite laminates were investigated. A matrix of 45% polyester was used, as it has good bonding properties between fibers. The composite laminates were fabricated using a hand layup technique, with seven layers stacked in different sequences and impregnated in the polyester matrix to create a hybrid configuration. Tensile, flexural, impact, compression, and hardness tests were conducted according to ASTM standards for mechanical characterization. The results showed that the overall stacking sequence of sample number seven (BRBRBRB) had the highest tensile strength at 120 MPa, impact energy at 8 J, flexural strength at 115 MPa, compression strength at 70 MPa, and hardness of 77. Natural fiber-reinforced composites are being used in current automotive industry applications, such as in electric vehicles.

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“…By combining straw and mud to create a mixture, bricks with improved resistance to squeezing and tearing can be made. These bricks are suitable for use as building blocks [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Stacking Sequence on Mechanical Properties of Basalt/Ramie Biodegradable Hybrid Polymer Composites

et al. 2023

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“…After finishing with octadecyl mercaptan containing a long carbon chain, SH-PET and CA-Fe-SH-PET both appeared as two obvious −CH 3 and −CH 2 characteristic peaks at 2915 cm −1 and 2847 cm −1 , whereas the 1640 cm −1 and 1619 cm −1 peaks disappeared for CA-Fe-SH-PET, indicating that mercaptan was grafted onto the PET through PCA adhering to the fabric by click chemical reaction. Since the SH peak is usually weak, no obvious characteristic peak was detected [18][19][20][21][22][23]. 1, it can be concluded that the carbon atom content on the surface of the PET fabrics treated with n-octadecyl mercaptan increased significantly.…”

Section: Surface Morphology and Chemical Structure Characterizationmentioning

confidence: 96%

Fabrication of Superhydrophobic and Light-Absorbing Polyester Fabric Based on Caffeic Acid

Xie

Yuan

et al. 2022

Polymers

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Caffeic acid (CA) was treated on the surface of polyester fabric (PET), and Fe2+ was used as an intermediate to form chelates with CA to increase the roughness of the polyester surface. With the addition of n-octadecyl mercaptan (SH), the mercapto group reacted with the carbon–carbon double bond of CA on the PET surface through enol click chemical reaction. Meanwhile, CA was polymerized under UV radiation, and thus CA-Fe-SH-PET was prepared. The introduction of SH with a long carbon chain reduced the surface energy of the PET, in order to endow the polyester fabric with a superhydrophobic/lipophilic function. Combined with XPS and FTIR tests, the new carbon–carbon double bond’s binding energy and vibration peak were found on the fabric surface, indicating that CA was adsorbed on the PET fabric’s surface. After adding SH, the double bond disappeared, demonstrating that SH and CA occurred a click chemical reaction and were grafted onto the PET fabric’s surface. The water contact angle (WCA) of CA-Fe-SH-PET was about 156 ± 0.6°, and the scrolling angle (SA) was about 3.298°. The results showed that the modified polyester had a robust superhydrophobic stability in washing, mechanical friction, sun aging, seawater immersion, organic reagent, and acid-base erosion derived from the good adhesion of polymerized CA (PCA). At the same time, the modified polyester fabric had good self-cleaning, antifouling, and oil–water separation performance. It was found that the CA-Fe-SH-PET fabric had unique photothermal conversion characteristics, which can convert the absorbed ultraviolet light into thermal energy, providing a local warming effect due to rapid heating and improving the transmission speed of heavy oil (engine oil and diesel). The CA-Fe-SH-PET fabric can further prevent the transmission of ultraviolet rays, and the UV resistance of CA-Fe-SH-PET fabric is far higher than the UV resistance standard. The preparation method is simple, fast, efficient, and environmentally friendly, and it has better a potential application value in the oil–water separation field.

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“…In recent years, technologies related to the processing of polymeric materials in the microwave electromagnetic field (EMF) have been developed [26][27][28]. Studies of electrophysical methods of processing polymers and products have shown the efficiency of using the energy of a microwave electromagnetic field for the modification of polymer composite materials (PCM) based on thermosetting binders.…”

Section: Introductionmentioning

confidence: 99%

Microwave Modification of an Epoxy Basalt-Filled Oligomer to Improve the Functional Properties of a Composite Based on It

et al. 2023

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The purpose of this work is to study the influence of the electric field strength of an electromagnetic wave with the maximum modifying effect on an epoxy basalt-filled oligomer, which is of great scientific and practical importance for the development of microwave oligomer modification technology. The optimal modes of microwave modification, under which the highest values of the mechanical properties of an epoxy basalt-filled polymer composite material are obtained, are identified: power of 400 W and an exposure time of 24 s. At the same time, the breaking stress in bending increases by 20%, the impact strength increases by 2 times, and hardness increases by 31%. A slight increase of 4.5% in heat resistance is noted compared to the composite obtained on the basis of an oligomer unmodified in the microwave electromagnetic field. The results of resistance to various aggressive environments are obtained, which show that the studied physical and mechanical characteristics of the epoxy basalt-filled material after exposure to an aggressive environment decrease by less than 14%, which corresponds to their good resistance to an aggressive environment. It is established that the effect of the microwave electromagnetic field on an epoxy basalt-filled oligomer is an effective modification method that improves physical and mechanical characteristics with a high level of temporal stability to climatic influences, with a coefficient of property retention of more than 90%.

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Effect of Microwave Irradiation at Different Stages of Manufacturing Unsaturated Polyester Nanocomposite

Cited by 13 publications

References 32 publications

Influence of Stacking Sequence on Mechanical Properties of Basalt/Ramie Biodegradable Hybrid Polymer Composites

Influence of Stacking Sequence on Mechanical Properties of Basalt/Ramie Biodegradable Hybrid Polymer Composites

Fabrication of Superhydrophobic and Light-Absorbing Polyester Fabric Based on Caffeic Acid

Microwave Modification of an Epoxy Basalt-Filled Oligomer to Improve the Functional Properties of a Composite Based on It

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