Preparation and thermal properties of paraffin/porous silica ceramic composite

Zhou, Xinggui; Xiao, Huining; Feng, Jian; Zhang, Changrui; Jiang, Yonggang

doi:10.1016/j.compscitech.2009.02.030

Cited by 103 publications

(42 citation statements)

References 20 publications

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“…Paraffin-silica composites (mass fraction of paraffin as PCM in the silica aerogel matrix was 75%) were fabricated [18] and introduced for thermal protection investigation rather than the erythritol-silica. Both paraffin-silica and erythritol-silica composites (dimensions: 100 Â 100 Â 2 mm 3 ) were introduced as solid matrices for the phase change composites.…”

Section: Thermal Protection Measurement Setupmentioning

confidence: 99%

Preparation, properties and thermal control applications of silica aerogel infiltrated with solid–liquid phase change materials

Zhou

Xiao

Feng

et al. 2012

Journal of Experimental Nanoscience

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In this study, silica aerogel saturated with erythritol as phase change materials (PCMs) was prepared by melt infiltration. The properties of the composite were determined by scanning electronic microscope (SEM), Fourier transformationinfrared spectroscope (FT-IR) and differential scanning calorimeter (DSC). In the novel composite, erythritol with high latent heat of fusion was used as PCM for thermal control, whereas nanoporous silica aerogel was prepared as the phase change matrix to provide structural strength and prevent leakage of the melted erythritol. Nitrogen gas adsorption curves and SEM analysis indicate that the pore structure of silica aerogel was porous and connected with each other. FT-IR analysis showed that the composite formation of silica aerogel and erythritol were physical, whereas DSC analysis showed that the melting point and heat storage capacity of the composite were 123.8 C and 289.92 kJ/kg, respectively. The thermal protection properties of phase change composites were designed under laboratory conditions using a thermal measurement setup of a simulated thermal environment of an aircraft. The phase change composite produced by the study can be used for thermal protection applications. Compared with the paraffin-silica aerogel composite, the erythritol-silica aerogel composite could rapidly control the rising temperature by absorbing heat under high thermal environments.

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Section: Thermal Protection Measurement Setupmentioning

confidence: 99%

Preparation, properties and thermal control applications of silica aerogel infiltrated with solid–liquid phase change materials

Zhou

Xiao

Feng

et al. 2012

Journal of Experimental Nanoscience

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“…Ayrıca kapsülleme işleminden sonra yapı malzemesinin ısı transfer ve ısıl iletkenliği düşmektedir. FDM'nin yapı malzemesine doğrudan ilave edilerek emdirilmesi bütün bu dezavantajların üstesinden gelinerek yapı endüstrisi için elzem bir ısıl enerji depolama malzemesi üretilmesi anlamına gelmektedir (Zhou et al 2009), (Feldman et al 1991), (Mehling et al 2002). Son yıllarda, inorganik organik ve bunların karışımı gibi pek çok türde FDM yapı malzemeleri içerisine ilave edilerek kullanılmaktadır (Nomura et al 2009), (Feldman et al 1995), (Hadjieva et al 2000), (HavesandFeldman 1992).…”

Section: Introductionunclassified

Silicafume/Polyethylene glycol (PEG) composite as a novel form-stable phase change material for thermal energy storage

Biçer¹,

Sarı²

2017

AKU-J. Sci. Eng.

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Anahtar kelimeler AbstractThis paper is aimed to prepare, characterize, and determine thermal energy storage properties of silicafume/polyethyleneglycol(PEG) composite as a novel form-stable composite phase change material(PCM). The composite PCM was prepared by incorporating PEG in the silicafume by using vacuum impregnation method. The PEG could be retained by 30 wt% into the silicafume without the leakage of melted PEG from the composite. The composite PCM was characterized by using SEM and FT-IR analysis techniques. Thermal energy storage properties of the composite PCMs were determined by DSC analysis. DSC results showed that the melting temperature and latent heat of the composite PCMs are 27.70 o Cand 87.09 J/g, respectively. Thermal cycling test was conducted to determine the thermal reliability of the composite PCM and the results showed that the composite PCM had good thermal energy storage reliability and chemical stability. TG analysis revealed that the impregnated PEG into the silicafume had good thermal stability. Thermal conductivity of the composite PCM was improved by adding carbon nanotubes (CNTs) in different mass fractions. The effect of CNTs addition on the thermal energy storage/release times of the produced composite PCM was also tested.

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“…Without limiting the polymer type, here one water-based polymer and one solvent-based polymer solution were used to demonstrate the concept of such electrospinning technique. In traditional needled electrospinning of particles, clogging of the needle hole is a major concern, whereas the needleless method requires very high voltage as high as 120 kV [23]. In this respect, the current method has a significant advantage that it is a needleless approach and requires comparatively lower power supply (9 kV).…”

Section: Introductionmentioning

confidence: 99%

“…From the FTIR spectra, it can be clearly seen that peaks from both aerogel particle and TPU polymer-base fabric are present in the electrosprayed sample. e FTIR spectra of aerogel show an intense peak around 1089 cm −1 which is the typical bending vibration of Si-O [23]. e peak at 843 cm −1 is due to the bending vibration of Si-O [23,24], and the peak at 948 cm −1 is for the stretching vibration of Si-OH [25].…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

Needleless Electrospinning and Electrospraying of Mixture of Polymer and Aerogel Particles on Textile

Shaid

Wang

Padhye

et al. 2018

Advances in Materials Science and Engineering

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Needleless electrospinning and electrospraying of aerogel particles in comparatively lower electric voltage (9 kV) have been demonstrated in the paper. Aerogel particles were dispersed in polymer solution and then needlelessly electrospun/sprayed by creating high electric charge at the syringe tip using a curved wire. FTIR spectra and SEM images proved that aerogel particles were deposited onto the base textile. In case of electrospinning, a nanofibre web holding the aerogel particles covered the fabric surface, whereas in case of electrospraying, aerogel particles deposited with the microdroplets of the polymer. e electrospraying process showed great potential for fabric surface functionalization due to the high amount of particle deposition on fabric. e new approach can be applicable for transferring other particulate materials on fabric surface through needleless electrospinning and electrospraying processes.

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Preparation and thermal properties of paraffin/porous silica ceramic composite

Cited by 103 publications

References 20 publications

Preparation, properties and thermal control applications of silica aerogel infiltrated with solid–liquid phase change materials

Preparation, properties and thermal control applications of silica aerogel infiltrated with solid–liquid phase change materials

Silicafume/Polyethylene glycol (PEG) composite as a novel form-stable phase change material for thermal energy storage

Needleless Electrospinning and Electrospraying of Mixture of Polymer and Aerogel Particles on Textile

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