Polyurethane foam materials and their industrial applications

Ateş, Murat; Karadag, Selin; Eker, Ayşegül Akdoğan; EKER>, Bülent

doi:10.1002/pi.6441

Cited by 103 publications

(44 citation statements)

References 158 publications

(251 reference statements)

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“…Figure collects digital images of the samples during flammability tests and cone calorimetry plots associated with heat release rate (HRR) and smoke production rate (SPR), as well as their integral values. A commercially available rigid polyurethane foam (PU) was also evaluated as a comparison for flammability and cone calorimetry tests due to the widespread use of this kind of foam in many industrial products and applications Tables S2 and S3 collect the data from the flammability and cone calorimetry test for all tested samples, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…A commercially available rigid polyurethane foam (PU) was also evaluated as a comparison for flammability and cone calorimetry tests due to the widespread use of this kind of foam in many industrial products and applications. 51 Tables S2 and S3 collect the data from the flammability and cone calorimetry test for all tested samples, respectively.…”

Section: Thermal Stabilitymentioning

confidence: 99%

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Layer-by-Layer-Coated Cellulose Fibers Enable the Production of Porous, Flame-Retardant, and Lightweight Materials

Marcioni

Zhao

Maddalena

et al. 2023

ACS Appl. Mater. Interfaces

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New sustainable materials produced by green processing routes are required in order to meet the concepts of circular economy. The replacement of insulating materials comprising flammable synthetic polymers by bio-based materials represents a potential opportunity to achieve this task. In this paper, low-density and flame-retardant (FR) porous fiber networks are prepared by assembling Layer-by-Layer (LbL)-functionalized cellulose fibers by means of freeze-drying. The LbL coating, encompassing chitosan and sodium hexametaphosphate, enables the formation of a self-sustained porous structure by enhancing fiber−fiber interactions during the freeze-drying process. Fiber networks prepared from 3 Bi-Layer (BL)-coated fibers contain 80% wt of cellulose and can easily self-extinguish the flame during flammability tests in vertical configuration while displaying extremely low combustion rates in forced combustion tests. Smoke release is 1 order of magnitude lower than that of commercially available polyurethane foams. Such high FR efficiency is ascribed to the homogeneity of the deposited assembly, which produces a protective exoskeleton at the air/cellulose interface. The results reported in this paper represent an excellent opportunity for the development of fire-safe materials, encompassing natural components where sustainability and performance are maximized.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Stabilitymentioning

confidence: 99%

Layer-by-Layer-Coated Cellulose Fibers Enable the Production of Porous, Flame-Retardant, and Lightweight Materials

Marcioni

Zhao

Maddalena

et al. 2023

ACS Appl. Mater. Interfaces

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“…Polyurethane (PU) foam materials are presented in various industrial applications, 1 such as the thermal insulation of buildings 2 . PU foams of different densities are suited for specific requirement in the building 3 .…”

Section: Introductionmentioning

confidence: 99%

“…First, this study focuses on the computational thermal conductivity λ cond . Then, the thermal radiativity is calculated by using Equation (1).…”

Section: Introductionmentioning

confidence: 99%

Effect of the shape and the distribution of cells on the effective thermal conductivity of polyurethane foam

Hermama

Bensiali²,

Lahbabi

et al. 2023

Polymer Engineering & Sci

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To design foams with specific properties, it is important to be able to predict their effective properties. The objective of this study is to compare and quantify the effect of the geometrical parameters on the thermal properties. Then the study uses both analytical and numerical homogenization methods to connect micro-scale parameters to the macro-scale thermal behavior. Several statistical studies of the morphology have been used to model the different categories of PU foams. The foam is modeled by a periodic structure of open, closed, or mixed cells. For each type of cell, different idealized shapes of a single cell are used, while keeping a constant porosity for each category. In the case of mixed

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“…To give a response to mechanical compression, PU foam presents a light structure, with empty cell matrix geometry, that easily collapses under low-pressure regimes . In recent years, PU foam has been widely used in e-skin for pressure detection due to its excellent elasticity, heat resistance, and biological harmlessness. − Huang et al fabricated 3D lightweight piezoresistive sensing materials via surface coating the PU foam with hybrid CNT/carbon black (CB) nanoparticles. The CNT/CB@PU foam exhibits high sensitivity, fast response, instant recovery, and stable compression–release signals to the strain/pressure stimuli.…”

Section: Introductionmentioning

confidence: 99%

Polyborosiloxane-Encapsulated Carbon Nanotube/Polyurethane Foams for Multifunctional Pressure Memory and Pain Bionic Sensors

Hong

Zhang

Gong

et al. 2023

ACS Appl. Nano Mater.

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Electronic skin (e-skin) is a bionic human skin material that is widely used in artificial intelligence devices. Pressure sensors, as the main component of e-skin, can perceive active pressure spatial distribution in real time. However, in addition to perceiving touch and pressure, human skin also has the ability to sense pain after being impacted or heavily pressed. Therefore, it is hoped that e-skin has the ability to sense the occurrence and disappearance of pain. Here, a pressure memory sensor (PM sensor) based on pressure memory foam (PM foam) was fabricated by a simple and easy-to-scale preparation process. PM foam exhibited excellent electrical conductivity due to the dense three-dimensional conductive network formed by carbon nanotubes (CNTs). PM sensors can achieve pressure memory and spontaneous recovery performance due to self-adhesion between the cell walls provided by polyborosiloxane (PBS). We investigated the effects of CNT and PBS contents on PM sensor sensitivity and memory time and realized the adjustment of sensitivity (0.012–0.099 kPa–1) and memory time (54–325 s). The sensor can bionically sense pain under heavy pressure or impact. In addition, PM foam exhibited excellent electromagnetic interference shielding performance and achieved a shielding effectiveness of more than 30 dB. PM foam realized the intelligent regulation of electromagnetic wave reflection and electromagnetic wave absorption through the conversion of a foam state and solid state. PM foam had excellent Joule heating performance to resist extreme cold environments. Multifunctional pressure memory and pain bionic sensors have great significance and application prospects in e-skin.

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Polyurethane foam materials and their industrial applications

Cited by 103 publications

References 158 publications

Layer-by-Layer-Coated Cellulose Fibers Enable the Production of Porous, Flame-Retardant, and Lightweight Materials

Layer-by-Layer-Coated Cellulose Fibers Enable the Production of Porous, Flame-Retardant, and Lightweight Materials

Effect of the shape and the distribution of cells on the effective thermal conductivity of polyurethane foam

Polyborosiloxane-Encapsulated Carbon Nanotube/Polyurethane Foams for Multifunctional Pressure Memory and Pain Bionic Sensors

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