Compatibility and thermal decomposition behavior of acrylic block copolymer modified epoxy resin

Zhou, Panpan; Zou, Lusi; Zha, Shangwen; Yang, Aqiang; Jiang, Shufang; Guan, Rong

doi:10.1007/s10965-019-1903-5

Cited by 9 publications

(5 citation statements)

References 44 publications

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“…This can be due to the hydrogen bond between the carbonyl group on the butyl acrylate and the hydroxyl group on the epoxy. [ 23 ] Maximum tensile strength (39.4 MPa, i.e., 40% higher than that of pure epoxy) corresponded to BCP dosage of 2.5 phr. At the same dosage of the copolymer, we observed the maximum toughness of 1013 kJ/m 3 , which was 78% higher than that of pure epoxy.…”

Section: Resultsmentioning

confidence: 99%

Design and characterization of high‐performance epoxy adhesive with block copolymer and alumina nanoparticles in aluminum‐aluminum bonded joints: Mechanical properties, lap shear strength, and thermal stability

2022

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In this research, phenolic resin and poly (butyl‐acrylate‐block‐styrene) copolymer were used in the formulation of epoxy adhesive to improve its thermal stability and toughness. Also, in order to improve the mechanical properties such as the modulus and tensile strength, aluminum oxide nanoparticles (NPs) were added to the epoxy based resin. Effects of different factors such as percent contents of phenolic resin, toughening agent, and aluminum oxide NPs on the microstructure, mechanical properties, and thermal stability of the epoxy‐based adhesives were investigated. Thermogravimetric analysis, Fourier transform infrared spectroscopy, and field‐emission scanning electron microscopy were used to investigate the thermal, mechanical, and morphological properties of the prepared epoxy adhesive samples. In addition, the curing kinetics of the optimal specimens was studied based on differential scanning calorimetry (DSC). The experimental results indicated that the phenolic decreased strength of dog‐bone samples, while increased the adhesion strength in metal‐to‐metal single‐lap strength. On the other hand, addition of block‐copolymers as toughening agent led to a consistent decrease in the modulus as well as increasing the tensile strength. Also, results of single‐lap strength tests showed that, in the optimal quad system, the four components exhibit synergetic effects and show a single‐lap strength that is 152% higher than that of pure epoxy. The DSC analysis indicated that the presence of alumina NPs and block‐copolymers tend to reduce the initial curing temperature while increasing the curing reaction heat.

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Section: Resultsmentioning

confidence: 99%

Design and characterization of high‐performance epoxy adhesive with block copolymer and alumina nanoparticles in aluminum‐aluminum bonded joints: Mechanical properties, lap shear strength, and thermal stability

2022

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“…When the decomposition temperature traversed, the sample will become heat-sensitivity and experience structural deformation, forming oxides; this will bring about the mass decrement and, in turn, will betoken the sample's thermal stability. From the TG curves, the thermal degradation components such as incipience degradation, the temperature at which the highest rate of degradation, temperatures at distinctive mass losses, and also [40,41].…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Blends of synthetic plastic-derived polypeptide with Hydroxypropylmethylcellulose and polyvinyl alcohol: unraveling the specific interaction parameters, morphology and thermal stability of the polymers couple

et al. 2020

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The medleys of the plastic-derived polypeptide with commercially available polymers believably the suitable candidate for pharmaceutical and biomedical importance. The current research is focussed on the synthesis of a novel plastic-mimetic polypeptide (PLP), poly(IPAVG) by the solution phase method (where I, P, A, V, and G represent Isoleucine, Proline, Alanine, Valine, and Glycine, respectively). The miscibility attributes of PLP/polyvinyl alcohol (PVA) and PLP/ hydroxypropylmethylcellulose (HPMC) blends were examined by viscometry and by other advanced analytical tools for different weight proportions. It is shown by the viscometry that the PLP/HPMC and PLP/PVA form an immiscible blend system at 10 ο C and further, the FTIR spectra of poly (IPAVG) /HPMC and poly (IPAVG) /PVA blend membranes manifest the lack of intermolecular interactions. DSC results proved the dual Tg for one blend proportion and lower Tg values for all other blend systems. The thermal property of the blends with different compositions was evaluated by thermogravimetric analysis (TGA). The TGA results showed that the blends possess inferior thermal stability to the native ones. The surface morphology was analyzed by SEM indicated the heterogeneity and X-ray diffraction (XRD) revealed the absence of any change in crystallinity advocated the immiscibility of the blends. Further, we ventured to prepare the non-woven fabrics from the solutions of 1-10 wt% concentrations at the voltages within 20-30 kV by electrospinning. The droplet formed at the spinneret failed to reach the collector plate, and consequently, no films developed for the collector device.

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“…Such a decrement can be attributed to the presence of soft blocks of butyl acrylate in the copolymer with a lower modulus relative to the epoxy. Tensile strength also increased up to the BCP level of 2.5 phr followed by a decrease which can be due to the hydrogen bonding between the carbonyl groups of the butyl acrylate and the hydroxyl group of the epoxy [30]. The highest tensile strength (39.4 MPa) was related to the BCP level of 2.5 phr, showing a 40% rise compared to pure epoxy.…”

Section: Resultsmentioning

confidence: 89%

“…The BCP content of 2.5C sample was higher, increasing the number of micelles. By further increase in the BCP content in the 3.75C sample, the size of the micelle structure also rose, which reduced the contact surface of epoxy chains with the copolymer, thus, decreasing the mechanical properties [30][31][32].…”

Section: Analysis Of Fesem Imagesmentioning

confidence: 99%

Design, Preparation and Characterization of a High-Performance Epoxy Adhesive with Poly (Butylacrylate-block-styrene) Block Copolymer and Zirconia Nano Particles in Aluminum- Aluminum Bonded Joints

Nikkhah Varkani,

Moini Jazani,

Sohrabian

et al. 2023

J Inorg Organomet Polym

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Highlights:1-A new approach was developed for designing epoxy based adhesives with high mechanical, adhesion and thermal properties by adding butyl acrylate block styrene copolymer, phenolic resin, and zirconia nanoparticles. 2-The hybrid of butyl acrylate block styrene copolymer, phenolic resin, and zirconia nanoparticles showed synergistic effects on the aluminium -aluminium single lap joint, butt joint tensile strength, and T-peel strength. 3-Temperature enhancement and decrement declined the adhesion strength of the aluminium -aluminium single lap joint strength and butt joint tensile strength. 4-Proposed toughening mechanisms for finding structure-property association in epoxy adhesives.

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Compatibility and thermal decomposition behavior of acrylic block copolymer modified epoxy resin

Cited by 9 publications

References 44 publications

Design and characterization of high‐performance epoxy adhesive with block copolymer and alumina nanoparticles in aluminum‐aluminum bonded joints: Mechanical properties, lap shear strength, and thermal stability

Design and characterization of high‐performance epoxy adhesive with block copolymer and alumina nanoparticles in aluminum‐aluminum bonded joints: Mechanical properties, lap shear strength, and thermal stability

Blends of synthetic plastic-derived polypeptide with Hydroxypropylmethylcellulose and polyvinyl alcohol: unraveling the specific interaction parameters, morphology and thermal stability of the polymers couple

Design, Preparation and Characterization of a High-Performance Epoxy Adhesive with Poly (Butylacrylate-block-styrene) Block Copolymer and Zirconia Nano Particles in Aluminum- Aluminum Bonded Joints

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