RT info:eu-repo/semantics/article
T1 Density gradients, cellular structure and thermal conductivity of high-density polyethylene foams by different amounts of chemical blowing agent
A1 Lobos, Juan
A1 Thirumuruganandham, Saravana Prakash
A1 Rodríguez Pérez, Miguel Ángel
K1 Compression molding
K1 Física de la materia condensada
K1 Plastic foams
K1 Espumas poliméricas
K1 Polymers
K1 Polyethylene
K1 Polietileno - Propiedades térmicas
K1 Thermal conductivity
K1 Calor - Conducción
K1 2206.10 Polímeros
K1 2202.01 Conductividad
AB LDPE (low-density polyethylene) foams were prepared using the improved compression moulding technique (ICM) with relative densities ranging from 0.3 to 0.7 and with different levels of chemical blowing agents (from 1% to 20%). The density gradients, cellular structure and thermal conductivity of the foams were characterized. The density and amount of CBA used were found to have a significant effect on the cellular structure both at the mesoscale (density gradients) and at the microscale (different cell sizes and cell densities). In addition, the thermal conductivity of the samples is very sensitive to the local structure where the heat flux is located. The technique used to measure this property, the Transient Plane Source method (TPS), makes it possible to detect the presence of density gradients. A simple method for determining these gradients based on thermal conductivity data was developed.
PB MDPI
SN 2073-4360
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/61500
UL https://uvadoc.uva.es/handle/10324/61500
LA eng
NO Polymers, 2022, Vol. 14, Nº. 19, 4082
NO Producción Científica
DS UVaDOC
RD 04-abr-2025