Reduced graphene oxide coated polyurethane composite foams as flexible strain sensors for large deformation

Shi, Zhe; An, Li; Zhang, Cong; Zhang, Yang-Fei

doi:10.1016/j.mseb.2021.115360

Cited by 7 publications

(8 citation statements)

References 39 publications

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“…Adding PEG-400 to the formula produces foam with smaller pore size. According to [22]. Small pores can improve the mechanical properties and provide better foam elastic properties [22].…”

Section: Tensile Strength Yield Strength and Elongationmentioning

confidence: 99%

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

Neswati,

Nazir,

Arief

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Palm oil polyol-based foams have inflexible and brittle properties. Palm oil polyols have a lower molecular weight. Polyols with a high molecular weight and a primary OH group, such as polyethylene glycol (PEG)-400, can provide the flexible properties of polyurethane foam. This study aimed to examine the optimum concentration of PEG-400, which can produce flexible polyurethane foam made from palm oil polyols with the best characteristics based on mechanical properties. This study compared palm oil polyol and PEG-400 treatment of 80%:20%, 70%:30%, 60%:40%, 50%:50%. Flexible polyurethane foam was characterized, including FTIR analysis, SEM, tensile strength, yield strength, elongation at break, and TGA. The results showed that the use of PEG-400 at an optimum concentration of 40% resulted in flexible polyurethane foam with a greater number of open cells and increased flexible properties but decreased the value of tensile strength and yield strength, as well as decreased the foam’s stability to heat. However, tensile strength and elongation at break of PEG-based palm oil polyurethane obtained from this study followed the flexible polyurethane foam requirements.

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“…Adding PEG-400 to the formula produces foam with smaller pore size. According to [22]. Small pores can improve the mechanical properties and provide better foam elastic properties [22].…”

Section: Tensile Strength Yield Strength and Elongationmentioning

confidence: 99%

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

Neswati,

Nazir,

Arief

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…In the process of self-assembly, the basic structural units spontaneously organize or aggregate into a stable structure with regular geometric appearance under the interaction of non-covalent bonds. Shi Zet al [51] prepared RGO-coated PU composite foam by self-assembly method. The GO was coated on the foam skeleton by self-assembly of hydrogen bonds between GO and the oxygen groups on the PU foam.…”

Section: Self-assemblymentioning

confidence: 99%

Research Status of Graphene Polyurethane Composite Coating

Zhou

Huang

2022

Coatings

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Graphene material has a variety of excellent properties and applications in energy storage, biomaterials, photoelectric devices, and other fields. With the progress of nanotechnology, graphene nanomaterials have shown their advantages in the field of new nano-corrosion coatings with their high barrier structure. In addition, polyurethane is also widely used in the field of anti-corrosion coatings due to its excellent chemical resistance, mechanical properties, and weathering resistance. The preparation of composite coatings by combining graphene nanomaterials with traditional polyurethane (PU) coatings has opened up a new way for the research and development of new anticorrotic coatings. In this paper, graphene polyurethane composite coating was first used as the research object, and the mechanism of graphene material in the new composite coating was analyzed. Then, graphene oxide (GO), a commonly used precursor material, was used as an entry point for a detailed study of the properties of GO materials and the advantages and disadvantages of its application in composites, and two types of modifications, covalent and non-covalent, were analyzed. In addition, the preparation methods and processes of graphene polyurethane composite coatings were summarized. Finally, the future research directions and research focus of GO were prospected.

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“…Under the environment of green and sustainable development, the development and utilization of healthy and environmentally friendly waterborne coatings have become a research hotspot. With water as the solvent, waterborne wood coatings are almost no volatile organic compounds and air pollutants, have a wide range of applications, and are safe and reliable in construction, which is favored by practitioners [ 1 , 2 , 3 ]. Waterborne polyurethane(WPU) coatings are mainly produced by the polyaddition reaction of a polyisocyanate, polyether, or polyol with some chain extenders and hydrophilic agents.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical Properties and Solvent Resistance of Polyurethane Coating by Chemical Grafting of Graphene Oxide

Liang

Yao

et al. 2023

Polymers

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Waterborne polyurethane coatings (WPU) are widely used in various types of coatings due to their environmental friendliness, rich gloss, and strong adhesion. However, their inferior mechanical properties and solvent resistance limit their application on the surface of wood products. In this study, graphene oxide (GO) with nanoscale size, large surface area, and abundant functional groups was incorporated into WPU by chemical grafting to improve the dispersion of GO in WPU, resulting in excellent mechanical properties and solvent resistance of WPU coatings. GO with abundant oxygen-containing functional groups and nanoscale size was prepared, and maintained good compatibility with WPU. When the GO concentration was 0.7 wt%, the tensile strength of GO-modified WPU coating film increased by 64.89%, and the abrasion resistance and pendulum hardness increased by 28.19% and 15.87%, respectively. In addition, GO also improved the solvent resistance of WPU coatings. The chemical grafting strategy employed in this study provides a feasible way to improve the dispersion of GO in WPU and provides a useful reference for the modification of waterborne wood coatings.

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Reduced graphene oxide coated polyurethane composite foams as flexible strain sensors for large deformation

Cited by 7 publications

References 39 publications

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

Research Status of Graphene Polyurethane Composite Coating

Improvement of Mechanical Properties and Solvent Resistance of Polyurethane Coating by Chemical Grafting of Graphene Oxide

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