Elastic and plastic properties of epoxy resin syntactic foams filled with hollow glass microspheres and glass fibers

Yu, Wei; Qian, Meng; Li, Huijian

doi:10.1002/app.44188

Cited by 31 publications

(15 citation statements)

References 37 publications

(56 reference statements)

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“…Polymeric syntactic foams have been widely used in load bearing components and buoyancy units due to their excellent properties including good chemical resistance, high specific strength, long durability, and excellent energy dissipation capacity. Their applications can be found in automotive, aerospace, marine, and construction sectors . Embedded hollow microspheres strongly determine the overall properties of syntactic foams.…”

Section: Introductionmentioning

confidence: 99%

The 3D failure process in polymeric syntactic foams with different cenosphere volume fractions

Huang

Liu

et al. 2019

J of Applied Polymer Sci

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The previous work (Huang and Li, Compos. Part B, 2015) proposed the failure mechanism in syntactic foams with low and high hollow microsphere volume fractions, based on the finite element simulation of localized stresses in the foam. In this work, in situ X‐ray microtomography of uniaxial compression tests was performed to provide the direct experimental evidence to the proposed mechanism by tracking the internal three‐dimensional failure process in epoxy syntactic foams with different cenosphere volume fractions (V). It was found that for both the low and high V, microcracks initiate in the matrix in the top and bottom of crushed cenospheres where the tensile stress concentrates, and then propagate longitudinally to become macrocracks. Increasing the cenosphere volume fraction also leads to the formation of matrix microcracks in the connection zone where the stress concentrates significantly; the matrix microcracks thus propagate diagonally and longitudinally in the high V foam. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47491.

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Section: Introductionmentioning

confidence: 99%

The 3D failure process in polymeric syntactic foams with different cenosphere volume fractions

Huang

Liu

et al. 2019

J of Applied Polymer Sci

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“…The higher reduction in strain at break observed for twin screw extruded samples is attributed to the higher amount of glass sediments arising from the filler damage as seen in the micrographs. The presence of HGM in the syntactic foams reduces the continuous area of the matrix, and the tensile stresses reduce the cross section of the test specimens, which, together with a not very efficient anchorage, leads to foam disruption 9,34,35 .…”

Section: Mechanical Tests 321 Tensile Strengthmentioning

confidence: 99%

Preparation of Syntactic Foams made from Green Polyethylene and Glass Microspheres: Morphological and Mechanical Characterization

et al. 2019

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Polymeric syntactic foams are composites made from the mixture of Hollow Glass Microspheres (HGM) and polymer matrices. One of their main characteristics is their low density and the production of these composites using a matrix derived from renewable sources potentiates their development without neglecting sustainability. In this paper , the properties of High Density Polyethylene (HDPE)/HGM syntactic foams containing 1% and 5% w/w HGM and 5% w/w of a compatibilizer are assessed. The composites were prepared by two processing routes: single screw extruder and twin screw extruder. The morphology and mechanical properties (tensile and impact) of the syntactic foams thus manufactured were ascertained. Morphological analysis indicated that matrix/filler adhesion was poor for all samples and that the best HGM dispersions were obtained in twin screw extruded samples. Mechanical properties were affected by the processing route adopted and by the content of hollow glass microspheres added. Elastic modulus, tensile strength and strain were reduced by 20, 10 and 23%, respectively, in systems processed in a twin screw extruder. Impact strength was the exception, with an increase of more than 300%. Higher contents of hollow glass microspheres led to reductions in mechanical strength of the syntactic foams, varying from 5% for the elastic modulus to 50% for strain.

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“…Adding the second component can effectively improve the toughness of epoxy resin, such as nano‐inorganic particles, rubber elastomers, and thermoplastic polymers . It needs to solve the agglomeration of nanoparticles in the matrix and the interfacial compatibility with the matrix.…”

Section: Introductionmentioning

confidence: 99%

Studies on the curing behavior, thermal, and mechanical properties of epoxy resin‐co‐amine‐functionalized lead phthalocyanine

Gao

et al. 2020

J of Applied Polymer Sci

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A high performance copolymer was prepared by using epoxy (EP) resin as matrix and 3,10,17,24‐tetra‐aminoethoxy lead phthalocyanine (APbPc) as additive with dicyandiamide as curing agent. Fourier‐transform infrared spectroscopy, dynamic mechanical analysis (DMA), differential scanning calorimetric analysis (DSC), and thermogravimetric analysis (TGA) were used to study the curing behavior, curing kinetics, dynamic mechanical properties, impact and tensile strength, and thermal stability of EP/APbPc blends. The experimental results show that APbPc, as a synergistic curing agent, can effectively reduce the curing temperature of epoxy resin. The curing kinetics of the copolymer was investigated by non‐isothermal DSC to determine kinetic data and measurement of the activation energy. DMA, impact, and tensile strength tests proved that phthalocyanine can significantly improve the toughness and stiffness of epoxy resin. Highest values were seen on the 20 wt% loading of APbPc in the copolymers, energy storage modulus, and impact strength increased respectively 388.46 MPa and 3.6 kJ/m2, Tg decreased 19.46°C. TGA curves indicated that the cured copolymers also exhibit excellent thermal properties.

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Elastic and plastic properties of epoxy resin syntactic foams filled with hollow glass microspheres and glass fibers

Cited by 31 publications

References 37 publications

The 3D failure process in polymeric syntactic foams with different cenosphere volume fractions

The 3D failure process in polymeric syntactic foams with different cenosphere volume fractions

Preparation of Syntactic Foams made from Green Polyethylene and Glass Microspheres: Morphological and Mechanical Characterization

Studies on the curing behavior, thermal, and mechanical properties of epoxy resin‐co‐amine‐functionalized lead phthalocyanine

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