Design and optimization of core/shell structures as highly efficient opacifiers for silica aerogels as high-temperature thermal insulation

Zhu, Chuan Yong; Li, Zeng Yao; Pang, Hao Qiang; Pan, Ning

doi:10.1016/j.ijthermalsci.2018.07.032

Cited by 41 publications

(9 citation statements)

References 39 publications

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“…Therefore, the significance of aerogels structure design is to be better adapted to the different application requirement. and open pores (right) (Cuadros, Erices, & Aguilera, 2015) According to previous researches (Oschatz, et al, 2017;Zhu, Li, Pang, & Pan, 2018), different preparation technologies including raw materials, gel process and drying methods lead to different aerogel pore structure. With different special molecule chain structure, polysaccharide could directly affect aerogels physical properties which will be given a detailed introduction in Section 2.2.…”

Section: Pore Structure Designmentioning

confidence: 99%

The advances of polysaccharide-based aerogels: Preparation and potential application

Wang

et al. 2019

Carbohydrate Polymers

151

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Highlights 1. Polysaccharide-based aerogels can be prepared with supercritical or freeze drying. 2. Polysaccharide-based aerogels may have nm-μm pore size distribution. 3. Aerogels with open or close pores have different functions and applications. 4. The formula and drying methods can change the pore structure and functions. 5. Advances and future challenges of polysaccharide-based aerogels are clarified. Highlights (for review)

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Section: Pore Structure Designmentioning

confidence: 99%

The advances of polysaccharide-based aerogels: Preparation and potential application

Wang

et al. 2019

Carbohydrate Polymers

151

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“…Oschatz et al [37] and Zhu et al [38], the type of air preparation technology, the drying methods, and the polymeric raw material are the main factors influencing pore type and quality to be designed. Based on polymer chain type, functional groups, fillers, and molecular people, polymeric aerogels may have different pore structures.…”

Section: Polymeric Aerogels Can Be Designed To Have Defined Poresmentioning

confidence: 99%

Polymer Aerogels: Preparation and Potential for Biomedical Application

Barbosa

2021

Aerogels II

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Polymeric aerogels have high added value and application. The potential to use natural polysaccharides, especially those from waste, has contributed to adding economic, social and ecological value. This chapter seeks to put forth the latest findings on the development of polymeric aerogels, drying techniques, properties, and pharmacological applications. The functional properties of polymeric aerogels, such as biodegradability, low toxicity and biocompatibility with cellular media are addressed. In the last decade, several works have reported the production of polymeric aerogels from natural polysaccharides. Chemical modifications and filling of new molecules were studied, improving the physicochemical and functional properties of the aerogels, as well as the drying techniques, were reported, and discarded. The production of polymeric aerogels is considered strategic for the development of sustainable, biodegradable and economically viable products.

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“…Several researchers have used Mie theory to optimize opacifier properties such as material, particle size, density (Caps et al, 1984;Liang et al, 2017;Napp et al, 1999;Wang et al, 2013;Zhu et al, 2018).…”

Section: C) Mie Scattering Theorymentioning

confidence: 99%

“…Recently, Mie scattering theory has been used to design new spherical core/shell opacifiers consisting of carbon cores and SiC/TiO 2 /Al 2 O 3 shells for low density and high temperature insulation (Zhu et al, 2018).…”

Section: Effect Of Particle Sizementioning

confidence: 99%

Vacuum insulation panels for refrigerators

Verma

Singh

2020

International Journal of Refrigeration

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Globally, the electrical energy consumption of domestic refrigerators is approximately 6% of the total consumed. Typically, refrigerators are insulated with materials, such as foams (thermal conductivity >20 mW m-1 K-1). Alternatively, using Vacuum Insulation Panels (VIPs) (thermal conductivity < 7 mW m-1 K-1) would significantly reduce their overall energy consumption and improve their energy efficiency index whilst maximising the usable inner volume. This paper reviews previous published research into VIPs covering core, envelope, heat transfer phenomena and ageing. The choice of core material significantly affects both the heat transfer coefficient and the overall cost of a VIP. To improve cost effectiveness and ageing properties, research has focused on the development of alternative core materials. This development requires a fundamental understanding of the effect of several interfering factors on the performance of VIPs. In this paper, these factors have been extensively reviewed and the results presented in a systematic manner. The factors are grouped into three sections viz. material properties (pore/particle size, particle's mechanical strength and conductivity), design properties (sealing pressure, compaction density) and operating conditions (mean operating temperature, relative humidity). The effect of each factor, on heat transfer modes, radiation and conduction, has been thoroughly discussed, along with the physics involved, by objectively reviewing studies reporting these.

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Design and optimization of core/shell structures as highly efficient opacifiers for silica aerogels as high-temperature thermal insulation

Cited by 41 publications

References 39 publications

The advances of polysaccharide-based aerogels: Preparation and potential application

The advances of polysaccharide-based aerogels: Preparation and potential application

Polymer Aerogels: Preparation and Potential for Biomedical Application

Vacuum insulation panels for refrigerators

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