Enhanced mechanical and thermal properties of epoxy with hyperbranched polyester grafted perylene diimide

Pan, Leilei; Lu, Shaorong; Xiao, Xiane; He, Zihai; Zeng, Cen; Gao, Jian; Yu, Jinhong

doi:10.1039/c4ra13609h

Cited by 47 publications

(40 citation statements)

References 58 publications

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“…[54] However, the dispersion of GF-HBPH in epoxy matrixes deteriorates when the fiber concentration is above the percolation threshold, which leads to the appearance of cracks in epoxy resins. [55] Figure 3. Thermal gravimetric analysis curves of pristine glass giber, silanized glass-fiber (GF-APS) and glass-fiber grafted by hyperbranched polymer with hydroxyl group.…”

Section: Resultsmentioning

confidence: 98%

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

Qin

Zhu

et al. 2016

Polym. Adv. Technol.

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A glass-fiber, grafted by hyperbranched polymer with hydroxyl group (GF-HBPH), reinforced epoxy-based composite was evaluated for mechanical properties and compared with the neat epoxy and silanized glass-fiber, GF-APS. The epoxy/GF-HBPH composites were studied by attenuated total internal reflectance infrared spectroscopy, 1 H nuclear magnetic resonance spectroscopy, thermal gravimetric analysis, mechanical properties analysis, and field emission-scanning electron microscopy. The results showed that the incorporation of GF-HBPH could simultaneously enhance the mechanical properties of the epoxy composites. Field emission-scanning electron microscopy images of the fracture surfaces of the test specimens were used to support the results and conclusions.

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Section: Resultsmentioning

confidence: 98%

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

Qin

Zhu

et al. 2016

Polym. Adv. Technol.

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“…Although, the graft of HBPE on the silanized silica particle surface can improve the compatibility between CSPs and epoxy matrix; the dispersion of CSPs in epoxy resins worsens with CSP content and results in a defect in the epoxy matrix. 33 …”

Section: Mechanical Performancementioning

confidence: 97%

“…The reason for this improvement can be explained by the following four aspects: firstly, the enhancement in mechanical properties of epoxy/HBPH thermosets modified with CSPs can be attributed to the interaction between epoxide groups attached to the silanized silica particle surfaces and hydroxyl groups in epoxy resins. 33 Secondly, the formed domains, which are attributed to the incorporation of CSPs, can withstand a greater mechanical loading from the matrix when the matrix is under stress. 28,48 This means that when the applied loading exceeds the elastic deformation stress, the CSPs have a stress transfer effect and enhances the strength and plasticity of the epoxy matrix.…”

Section: Mechanical Performancementioning

confidence: 99%

“…31 Hyperbranched polymers (HBPs), which have a low viscosity and melting point, unique three-dimensional architecture, and compatibility with other polymers, 32 are used to improve the impact resistance of epoxy resins. 33 An exceptional characteristic of HBPs is their high density of terminal functional groups, which can enhance the compatibility between HBPs and epoxy matrices. Tomuta et al demonstrated that the introduction of HBPs toughened epoxy.…”

Section: Introductionmentioning

confidence: 99%

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The effect of core–shell particles on the mechanical performance of epoxy resins modified with hyperbranched polymers

Lin

Cui

2016

J. Mater. Res.

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A novel core-shell particle that consists of epoxide-terminated hyperbranched polymer (HBP) and silica nanoparticles was incorporated into an epoxy/hydroxyl-terminated HBP blend to fabricate a high-performance epoxy thermoset. The effect of the core-shell particle content on the mechanical properties of the epoxy thermosets was investigated in detail. Results from tensile, flexural, and impact tests are provided. The impact fracture surface was studied by field emission-scanning electron microscopy. The incorporation of 2 wt% core-shell particles improved the tensile strength, percent elongation at break, flexural strength, and impact resistance of epoxy/hydroxyl-terminated HBP thermosets. Field emission-scanning electron micrographs showed that core-shell particle addition resulted in large-scale shear deformation and debonding from the epoxy matrix, and improved the epoxy resin toughness.

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“…13 The perylene bisimide has a planar, benzene ring structure, thus it tends to assemble via noncovalent interactions, such as hydrogen bonding, van der Waals and π-π stacking interactions. 10,14 Consequently it could bind well to RGO. However, the solubility of PBI is a hurdle in this application.…”

Section: Introductionmentioning

confidence: 99%

Improving thermal and mechanical properties of epoxy composites by using functionalized graphene

Pan

Ban

et al. 2015

RSC Adv.

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Perylene tetracarboxylic anhydride (PTCDA) was reacted with 6-aminocaproic acid to form the corresponding perylene bisimide (PBI). PBI was used as foundation an oligomerisation of glycidol in a ring-opening reaction of glycidol leading to a hyper branched, water soluble glycidol derivative of perylene (PBI-HPG). PBI-HPG was bound to the reduced graphene oxide via π-π stacking resulting in a compound termed PBI-HPG/RGO. The structure and morphology of PBI-HPG/RGO were investigated by infrared spectroscopy (FT-IR), wide angle X-ray diffractometry (WAXD), transmission electron microscopy (TEM), atomic force microscope (AFM) and X-ray photoelectron spectroscopy (XPS). PBI-HPG/RGO was blended into at different loadings in order to improve the thermal and mechanical properties of epoxy composites. The maximum Tg of the epoxy composites was about 20 o C and the decomposition temperature (Td) was 26 o C higher than that of neat epoxy. The incorporation of PBI-HPG/RGO yields a material with an impact strength of 39.6 KJ/m 2 and a tensile strength at 0.7 wt%. It increased by 50.8% and 62.3%, respectively, compared to the neat epoxy. ARTICLE RSC Adv.2 | RSC Adv., 2015, 00, 1-3This journal is

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Enhanced mechanical and thermal properties of epoxy with hyperbranched polyester grafted perylene diimide

Abstract: The mechanical and thermal properties of epoxy were significantly enhanced modified by H20-g-PDI.

Cited by 47 publications

References 58 publications

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

Improved mechanical properties of epoxy-based composites with hyperbranched polymer grafting glass-fiber

The effect of core–shell particles on the mechanical performance of epoxy resins modified with hyperbranched polymers

Improving thermal and mechanical properties of epoxy composites by using functionalized graphene

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