Recycled polyethylene terephthalate-based boards for thermal-acoustic insulation

Marques, Diego Valdevino; Barcelos, Ricardo Luis; Silva, Heloisa Regina Turatti; Egert, Paola; Parma, Gabriel Oscar Cremona; Girotto, Edivandro; Consoni, Deise Rebelo; Benavides, R.; Silva, Luciano; Magnago, Rachel Faverzani

doi:10.1016/j.jclepro.2018.04.069

Cited by 43 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fibras de PET apresentam um adequada capacidade de isolamento térmico, similar à lã e à madeira, sobretudo podem ser misturadas com fibras naturais diminuindo seu impacto ambiental [10]. A reciclagem de poliéster para produção de outros compósitos com resíduos da indústria textil com espuma de poliuretano e fibras de poliamida também podem ser empregados para produção de mantas de isolamento térmico [11,12].…”

Section: Resultsunclassified

Reciclagem de clichês descartados da impressão flexográfica para produção de compósitos com aplicações para o isolamento acústico e térmico

Maciel

Nascimento

2020

Matéria (Rio J.)

View full text Add to dashboard Cite

RESUMO A flexografia é um método bastante utilizado na impressão de embalagens plásticas flexíveis, onde o clichê é uma placa de impressão resiliente fotopolimerizada. Os clichês são dificilmente reciclados, porque adquirem uma estrutura molecular reticulada, gerando também graves problemas ambientais no seu descarte final, logo que, apresentam um período de decomposição indeterminado. Consequentemente, as empresas precisam aterrar os clichês após o seu tempo de vida. Atualmente, não existem produtos ou métodos de reciclagem deste material. Portanto, o objetivo deste trabalho é reciclar os clichês descartados para a produção de placas para isolamento acústico e térmico. Desenvolveu-se um método de cominuição do material com uma adequada granulometria. As misturas feitas com clichê e PET triturado, prensados a uma temperatura de 350°C, obtiveram uma elongação de 22% até a ruptura com alta flexibilidade. Adicionou-se até 90% de clichê reaproveitado nas composições estudadas. O isolamento térmico do compósito foi 18% inferior ao de um laminado de madeira com espessura similar. Em contrapartida, o isolamento acústico com as placas de clichê mostrou um aumento de 30% na capacidade de isolamento acústico, principalmente na faixa de frequência acima de 2 kHz, mostrando uma potencial aplicação para isolamento.

show abstract

Section: Resultsunclassified

Reciclagem de clichês descartados da impressão flexográfica para produção de compósitos com aplicações para o isolamento acústico e térmico

Maciel

Nascimento

2020

Matéria (Rio J.)

View full text Add to dashboard Cite

show abstract

“…It is observed in elements Al, Si, Fe, and Mg. On the surface of the burnt specimen A1 0 there was an increase mainly in the percentage of C and a decrease in the percentages of oxygen, calcium, aluminum, and silicon about the intact specimen A1, indicating that soot formation predominated in the carbon/ ceramic layer of the burnt specimen surface. [8,61] For specimens A2 0 and A3 0 , the percentages of carbon and oxygen decreased on the burned samples' surface. The percentages of calcium and silicon increased concerning A2 and A3, with a ceramic layer's predominance.…”

Section: Sem and Edsmentioning

confidence: 97%

“…The addition of PVC and ATH demonstrated greater efficiency in reducing burning times, with the flame extinction in the material increasing polymers' flammability. [26,51,61] ATH is a nonhalogenated flame retardant, Al(OH) 3 , decomposes in two stages, first with the formation of AlOOH, and the second with the formation of Al 2 O 3 which takes the trapping of flammable gases due to the formation of the ceramic layer on the surface, and the release of water from these steps promotes the dilution of combustible gases. [17,26,31,51] PVC is a halogenated flame retardant, the release of hydrochloric acid in the polymer dehydrochlorination phase, it acts as a flame retardant in the gas phase, contributing to decrease firepower.…”

Section: Vertical and Horizontal Inflammabilitymentioning

confidence: 99%

Cemental composites with polyurethane and recycled polyvinyl chloride: The influence of industrial waste addition on flammability

et al. 2021

Self Cite

View full text Add to dashboard Cite

In the construction industry, the large number of residues presents a challenge for recycling and the possibility of producing new materials. This study reported the effects of the addition of polyvinyl chloride (PVC) residues and cement/alumina trihydrate on the production of a fire-resistant thermalacoustic insulation material. The composites were verified by scanning electron microscopy, the polyurethane (PU) cells were maintained with the addition of PVC, cement, and trihydrate alumina. The reduction in compressive strength for boards with 50% PVC waste as a replacement for the PU raw material. The boards showed the composites' conductivity coefficient was lower than that of the perforated brick and combustion deceleration up to flame extinction in the flammability test (UL94) because of the PVC/cement/ alumina trihydrate. They also presented cost savings (~57%) and carbon dioxide emissions (~49%) from the raw material, contributing to developing a less predatory and socio-environmentally responsible industry.

show abstract

“…This waste product is performed and with the addition of binder and through a hot rolling system it allows the creation of polyester fiber panels. [18][19] The analyzed material has the following properties: density ρ = 20 Kg/m 3 , resistivity R 1 = 9.000 Rayl/m.…”

Section: Recycled Polyethylene Terephthalate-based Materialsmentioning

confidence: 99%

Modelling sound absorption properties for recycled polyethylene terephthalate-based material using Gaussian regression

Iannace

Ciaburro

2020

Building Acoustics

View full text Add to dashboard Cite

Plastic is widely used all over the world and its production has been increasing continuously in recent years. But plastic presents significant problems about its end-of-life given its important environmental impact. These problems impose recycling policies which provide for the collection and recycling of plastic materials. In this work, the acoustic properties of a recycled polyethylene terephthalate-based material were analyzed. The material showed good sound-absorbing characteristics, especially at high frequencies. In addition, a numerical model based on the Gaussian regression was developed to simulate the sound absorption coefficient of the material. The model returned an R-Squared value of 0.97 demonstrating excellent performance.

show abstract

Recycled polyethylene terephthalate-based boards for thermal-acoustic insulation

Cited by 43 publications

References 47 publications

Reciclagem de clichês descartados da impressão flexográfica para produção de compósitos com aplicações para o isolamento acústico e térmico

Reciclagem de clichês descartados da impressão flexográfica para produção de compósitos com aplicações para o isolamento acústico e térmico

Cemental composites with polyurethane and recycled polyvinyl chloride: The influence of industrial waste addition on flammability

Modelling sound absorption properties for recycled polyethylene terephthalate-based material using Gaussian regression

Contact Info

Product

Resources

About