Porous Materials with Thin Interlayers for Optimal Thermal Insulation

Wu, Huijun; Fan, Jintu; Du, Ning

doi:10.1515/ijnsns.2009.10.3.291

Cited by 9 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fibrous porous media have attracted considerable attention in natural and technological processes including thermal insulation, fuel cells, biological transport phenomena, filtration and separation, and production of textiles and paper [1][2][3][4][5][6][7][8][9]. One of the most important properties for fibrous porous media is permeability.…”

Section: Introductionmentioning

confidence: 99%

A difference-fractal model for the permeability of fibrous porous media

2010

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

A difference-fractal model for the permeability of fibrous porous media

2010

View full text Add to dashboard Cite

“…Simultaneously, the polymer matrix is fixed due to the diffusion of sc-fluid molecules out of the matrix and the related increase of T g *. Finally, a nanoporous polymer is obtained which can be used in heat insulation [32,33], gas storage [34], separation [35], and catalysis [36]. Using the porous polymer as a template itself, Qawasmi et al [37] have mineralized porous polystyrene (PS), previously prepared by the NF-CID method, at mild conditions via chemical bath deposition (CBD) with a ZnO precursor solution.…”

Section: Introductionmentioning

confidence: 99%

Adjustable polystyrene nanoparticle templates for the production of mesoporous foams and ZnO inverse opals

et al. 2020

View full text Add to dashboard Cite

The manifold applications of porous materials, such as in storage, separation, and catalysis, have led to an enormous interest in their cost-efficient preparation. A promising strategy to obtain porous materials with adjustable pore size and morphology is to use templates exhibiting the appropriate nanostructure. In this study, close-packed polystyrene (PS) nanoparticles, synthesized by emulsion polymerization, were used to produce porous PS and ZnO inverse opals. The size and distribution of the polystyrene nanoparticles, characterized by dynamic light scattering (DLS), small-angle neutron scattering (SANS), and scanning electron microscopy (SEM), were controlled via the concentration of sodium dodecyl sulfate (SDS). Systematic measurements of the water/styrene-interfacial tension show that the critical micelle concentration (CMC) of the ternary water–styrene–SDS system, which determines whether monodisperse or polydisperse PS particles are obtained, is considerably lower than that of the binary water–SDS system. The assemblies of close-packed PS nanoparticles obtained via drying were then studied by small-angle X-ray scattering (SAXS) and SEM. Both techniques prove that PS nanoparticles synthesized above the CMC result in a significantly unordered but denser packing of the particles. The polystyrene particles were subsequently used to produce porous polystyrene and ZnO inverse opals. While the former consists of micrometer-sized spherical pores surrounded by extended open-cellular regions of mesopores (Rpore ≈ 25 nm), the latter are made of ZnO-nanoparticles forming a structure of well-aligned interconnected pores.

show abstract

“…Chen et al [5] measured TCR between grapheme and silicon dioxide by using a differential method. Wu et al [6] found that the thermal resistances of porous materials could be effectively improved by adding appropriate number of interlayer of appropriate thickness. Although the surface morphology is known as a key factor of TCR [7], the roughness has been used only as a parameter in the previous studies [8] and little work has been done on the influence of surface morphology.…”

Section: Introductionmentioning

confidence: 99%

Effects of surface morphology on thermal contact resistance

Huang

2011

THERM SCI

View full text Add to dashboard Cite

The thermal contact resistance is common in aerospace industry, nuclear reactors and electronic equipments. The work addresses a new scheme for determining the thermal contact resistance between a smooth surface of a film and a rough surface of a metal specimen. The finite element method was used as a tool to explore the surface morphology effect on the thermal contact resistance while the temperature of the contact surface was determined by a regression method. According to the results developed, the temperature on the contact surfaces linearly drops with the increasing average height of surface roughness and nonlinearly drops with the increasing ratio between non-contact area and nominal contact area. On the other hand, the thermal contact resistance increases linearly with increases in the average height of the surface roughness. What's more, the thermal contact resistance increases in a non-linear manner as the ratio of the non-contact area to the nominal contact area is increasing.

show abstract

Porous Materials with Thin Interlayers for Optimal Thermal Insulation

Cited by 9 publications

References 19 publications

A difference-fractal model for the permeability of fibrous porous media

A difference-fractal model for the permeability of fibrous porous media

Adjustable polystyrene nanoparticle templates for the production of mesoporous foams and ZnO inverse opals

Effects of surface morphology on thermal contact resistance

Contact Info

Product

Resources

About