Toughness Improvement of Epoxy Composites Using a Kind of Environment-Friendly Bio-Based Polyester Polyol

Shang, Xinyu; Li, Xue; Zhang, Yanhua

doi:10.1007/s10924-022-02470-w

Cited by 4 publications

(2 citation statements)

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“…The energy storage modulus of MCC/EP composite material is higher than that of pure epoxy resin. The increase in energy storage modulus indicated that the material had better elasticity and a greater ability to store elastic deformation energy after modification 25 . When stress was relieved, the epoxy resin composite material had a stronger ability to recover to its original deformation 26 …”

Section: Resultsmentioning

confidence: 99%

“…The increase in energy storage modulus indicated that the material had better elasticity and a greater ability to store elastic deformation energy after modification. 25 When stress was relieved, the epoxy resin composite material had a stronger ability to recover to its original deformation. 26 The thermal characteristics of MCC/EP composites with varying proportions were tested using TGA, as illustrated in Figure 5 is not easy to wet the solid and is easy to move on the surface.…”

Section: Thermal Analysis Of Ep Compositesmentioning

confidence: 99%

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Study on improving the toughness of rapidly curing epoxy resin composite materials with a biobased microcrystalline cellulose

Bi,

Liu,

Cao

et al. 2024

Polymers for Advanced Techs

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Rapid solidification molding is one of the main low‐cost forming methods for composite materials, and the reasonable selection of the solidification molding process is the key to achieving material performance. The curing system used in this paper is the widely used, inexpensive, and readily available epoxy resin (WSR618) and the transparent, colorless, and less toxic 593 curing agent, which cures at room temperature. Through the study of various temperature formulations, a rapid curing system was determined that has a 10‐min cure at 80°C. The results showed that when the mass ratio of epoxy (EP) resin to curing agent was 5:1, the curing system was selected at 80°C for 10 min, and the bending strength could reach 100.19 MPa, and the impact strength could reach 12.82 kJ/m2. However, the difficulty caused by quick solidification was a reduction in mechanical characteristics, which required modification. Microcrystalline cellulose is cheap and readily available and widely available, so microcrystalline cellulose (MCC) was chosen for modification in this study. The experimental results showed that the addition of MCC reduced the fracture brittleness of EP composite materials. When 0.75% MCC was added, the bending and tensile strengths reached 116.88 and 52.53 MPa, respectively, which were 16.66% and 18.74% higher than unmodified EP. The elongation at break reached 11.57%, which is 14.13% higher than unmodified.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Analysis Of Ep Compositesmentioning

confidence: 99%