Flexible polyurethane foam nanocomposites with modified layered double hydroxides

Gómez-Fernández, Sandra; Ugarte, Lorena; Peña-Rodríguez, Cristina; Zubitur, Manuela; Corcuera, María Ángeles; Eceiza, Arantxa

doi:10.1016/j.clay.2016.01.015

Cited by 53 publications

(41 citation statements)

References 38 publications

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“…This condition is due to the formation of a low thermal conductivity EV char layer on the periphery of foam, which delays the release of heat flow as demonstrated in Figure 7c. This phenomenon is consistent with the results of Gomez-Fernandez et al [31].…”

Section: Resultssupporting

confidence: 94%

Expanded Vermiculite-Filled Polyurethane Foam-Core Bionic Composites: Preparation and Thermal, Compression, and Dynamic Cushion Properties

Wang

Ren

et al. 2019

Polymers

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In this article, expanded vermiculite (EV)-enhanced polyurethane foam bionic composites inspired by pomelo peel is proposed. The columnar lattice structure mold is employed to constitute the periodic interface structure and gradient foam structure, and the nylon nonwoven fabric is combined as the surface layer. The effects of EV content on the thermal, compression, and dynamic cushion properties of bionic composites are investigated. Results show that residual char increases with EV content, which conduces to decrease the release of heat flow. The proposed bionic composite with columnar lattice structure has optimal compressive modulus, energy absorption and dynamic cushion efficacy when 1 wt% EV is added. However, its performance decreases slowly when EV fillers are continuously added because the cell morphology is changed from round to irregular shape and the interfacial adhesion of filler–matrix is weakened. Owing to their unique bionic structure, composites can absorb 99% of the energy impacted by flat impactor within a smaller deformation and achieve 97% absorption efficiency for a hemispheric impactor in cushion test.

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Section: Resultssupporting

confidence: 94%

Expanded Vermiculite-Filled Polyurethane Foam-Core Bionic Composites: Preparation and Thermal, Compression, and Dynamic Cushion Properties

Wang

Ren

et al. 2019

Polymers

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“…17 Gómez-Fernández et al modied hydroxide with two different phosphorus containing anions, and found that the foam of LDH-HDEHP had signicantly lower heat release rate on the second stage of degradation. 18 They also studied the effects of different types of layered double hydroxides on exible polyurethane foams. The test results showed that hydroxide delayed the thermal degradation of exible PU foams and decreased the total heat release and heat release capacity.…”

Section: Introductionmentioning

confidence: 99%

Effects of hydrotalcite on rigid polyurethane foam composites containing a fire retarding agent: compressive stress, combustion resistance, sound absorption, and electromagnetic shielding effectiveness

Peng

Wang

et al. 2018

RSC Adv.

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“…1a). The repetition of basal reflections (003) and (006) is related to the [14,30,31]. The LDH-c XRD (Fig.…”

Section: Characterization Of Materialsmentioning

confidence: 98%

Organic-Inorganic Hybrid Materials: Layered Double Hydroxides and Cellulose Acetate Films as Phosphate Recovery

Castro¹,

Ferreira²,

Eulálio³

et al. 2018

JAST-B

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With demand increasing for phosphate recovery, a considerable share of current research is dedicated to elaborate multifunctional materials. In this way, the objective of this work was to produce hybrid films from the combination of cellulose acetate (CA) biopolymer and magnesium and aluminium layered double hydroxides (LDHs) and investigate their performance for phosphate recovery. In this work, the following materials were prepared and characterized: LDH, calcinated LDH (LDH-c), CA film (CAF), CA film with LDH (CAF-LDH) and CA film with LDH-c (CAF-LDH-c). The produced materials were characterized by X-ray diffraction, thermogravimetric analysis coupled with differential scanning calorimetry and mass spectrometry, attenuated total reflectance Fourier transform infrared spectroscopy and scanning electronic microscopy. The thickness, H 2 O absorption (A H 2 O ), stability in H 2 O and phosphate adsorption of the produced films were evaluated. The adsorption capacity of films was compared to LDHs in powder form. The CAF-LDH and CAF-LDH-c increased film thickness, where CAF-LDH-c was thicker than CAF-LDH. CAF-LDH-c had higher A H 2 O than the other films, because of its increased thickness and mainly because of the H 2 O sorption process of these materials. H 2 O stability of 98.97% for CAF-LDH and 96.81% for CAF-LDH-c suggest the produced films can maintain their structural properties even after a long contact period with aqueous solutions. For the CAF-LDH-c, the maximum adsorption capacity of phosphate, according to the Langmuir-Freundlich model, was 6.98 mg/g. The adsorption value suggests that this film can be used as an efficient phosphorus (P) adsorbent from wastewater or a eutrophicated source.

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Flexible polyurethane foam nanocomposites with modified layered double hydroxides

Cited by 53 publications

References 38 publications

Expanded Vermiculite-Filled Polyurethane Foam-Core Bionic Composites: Preparation and Thermal, Compression, and Dynamic Cushion Properties

Expanded Vermiculite-Filled Polyurethane Foam-Core Bionic Composites: Preparation and Thermal, Compression, and Dynamic Cushion Properties

Effects of hydrotalcite on rigid polyurethane foam composites containing a fire retarding agent: compressive stress, combustion resistance, sound absorption, and electromagnetic shielding effectiveness

Organic-Inorganic Hybrid Materials: Layered Double Hydroxides and Cellulose Acetate Films as Phosphate Recovery

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