Paraffin-based shape-stable phase change materials with graphene/carbon nanotube three-dimensional network structure

Semi-IPN phase change material (PCM) which is suitable for the temperature adjustment textile field is prepared by solution copolymerization. The structure of framework material is a three-dimensional network prepared by N-hydroxymethyl acrylamide, and the phase change material is prepared by polyethylene glycol with molecular weigh 2000. The orthogonal experimental method is used for determining the optimum formula and investigating the various factors on the phase change material properties. Structure and properties of the composite properties are synthesized by SEM, DSC, TGA. The result shows: the advanced process of making composite phase change material is that PEG owns 70% of the overall mass fractions, initiator owns 2.5% of monomer mass fractions, the molar ratio of cross-linker monomer is 1:8, the reaction time is 3 hours, and mass ratio of monomer to water is 1:6. The prepared composite material is distributed uniformly of framework holes, and it has a well fixed effect to the phase change material, which the phase transition temperature is 32.92 °C, the enthalpy is up to 108.41 J / g. It also has a good thermal stability, and applies to the spinning environment which the temperature is not higher than 300 °C.

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A one-step-assembled three-dimensional network of silver/polyvinylpyrrolidone (PVP) nanowires and its application in energy storage

Nanoscale ◽

10.1039/d0nr00991a ◽

2020 ◽

Vol 12 (19) ◽

pp. 10573-10583 ◽

Cited By ~ 1

Author(s):

Lin Zhang ◽

Gang Feng

Keyword(s):

Energy Storage ◽

Hydrothermal Synthesis ◽

Phase Change ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Phase Change Materials ◽

Three Dimensional ◽

Dimensional Network ◽

One Step

Through a first-ever one-step hydrothermal synthesis, a silver–PVP-nanowire three-dimensional network is fabricated for drastically enhancing thermal energy storage phase change materials.

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Preparation and characterization of side-chain liquid crystal polymer/paraffin composites as form-stable phase change materials

Journal of Materials Chemistry A ◽

10.1039/c5ta00606f ◽

2015 ◽

Vol 3 (18) ◽

pp. 9645-9657 ◽

Cited By ~ 36

Author(s):

Dang Wu ◽

Bin Ni ◽

Yujie Liu ◽

Sheng Chen ◽

Hailiang Zhang

Keyword(s):

Phase Change Materials ◽

Heat Storage ◽

Three Dimensional ◽

High Heat ◽

Side Chain ◽

Stable Phase ◽

Excellent Thermal Stability ◽

Crystal Polymer ◽

Dimensional Network

SCLCP/paraffin composites as a novel FSPCM supported by a SCLCP three-dimensional network with high heat storage density and excellent thermal stability.

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Eicosane/Polycarbonate Composite as Form-Stable Phase Change Materials for Latent Heat Thermal Energy Storage

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.221.78 ◽

2011 ◽

Vol 221 ◽

pp. 78-84

Author(s):

Yi Wang ◽

Tian Dong Xia ◽

Hui Xia Feng

Keyword(s):

Energy Storage ◽

Thermal Cycling ◽

Phase Change ◽

Thermal Energy ◽

Network Structure ◽

Thermal Energy Storage ◽

Phase Change Materials ◽

Thermal Cycling Test ◽

Thermal Reliability ◽

Dimensional Network

The aim of this research is to prepare of a novel form-stable composite phase change materials (PCMs) for the latent heat thermal energy storage (LHTES) in buildings, passive solar space heating or functional fluid by incorporation of eicosane within Polycarbonate (PC) through solution casting technique. The composite PCMs was characterized using scanning electron microscope (SEM) and fourier transformation infrared (FTIR) analysis technique. The results show that the form-stable blends was formed and the maximum encapsulated proportion of eicosane in the composite was 50 wt% without melted PCMs seepage from the composite. In the shape stabilized PCMs, the polymer acts as the supporting material to form the there dimensional network structure and the eicosane acts as a PCMs and disperses in the three-dimensional network structure. Thermal properties, thermal reliability and heat storage or release performance of the composite PCMs were determined by differential scanning calorimetry (DSC), FTIR and thermal cycling test analysis. The melting and freezing temperatures and the latent heats of the composite PCM were measured as 36.2°C-40°C and 62.2 J/g - 63.1 J/g, respectively. The results of DSC, FTIR and thermal cycling test are all show that the thermal reliability of the composite PCMs has an imperceptible change. This conclusion indicates that the blends have a good thermal and chemical stability.

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Enhanced bacterial disinfection by CuI–BiOI/rGO hydrogel under visible light irradiation

RSC Advances ◽

10.1039/d1ra02966e ◽

2021 ◽

Vol 11 (33) ◽

pp. 20446-20456

Author(s):

Xi Ma ◽

Ziwei Wang ◽

Haoguo Yang ◽

Yiqiu Zhang ◽

Zizhong Zhang ◽

...

Keyword(s):

Electron Transport ◽

Visible Light ◽

Network Structure ◽

Visible Light Irradiation ◽

Three Dimensional ◽

Light Irradiation ◽

Transport Capacity ◽

Highly Efficient ◽

Dimensional Network ◽

Bacterial Disinfection

Compared with traditional layered graphene, graphene hydrogels have been used to construct highly efficient visible light-excited photocatalysts due to their particular three-dimensional network structure and efficient electron transport capacity.

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Unsaturated polyester resin supported form-stable phase change materials with enhanced thermal conductivity for solar energy storage and conversion

Renewable Energy ◽

10.1016/j.renene.2021.04.033 ◽

2021 ◽

Author(s):

Naici Bing ◽

Jie Yang ◽

Huan Gao ◽

Huaqing Xie ◽

Wei Yu

Keyword(s):

Thermal Conductivity ◽

Energy Storage ◽

Phase Change ◽

Phase Change Materials ◽

Polyester Resin ◽

Unsaturated Polyester ◽

Energy Storage And Conversion ◽

Stable Phase ◽

Solar Energy Storage ◽

Enhanced Thermal Conductivity

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Effect of Oat β-Glucan on the Rheological Characteristics and Microstructure of Set-Type Yogurt

Molecules ◽

10.3390/molecules26164752 ◽

2021 ◽

Vol 26 (16) ◽

pp. 4752

Author(s):

Xiaoqing Qu ◽

Yuliya Nazarenko ◽

Wei Yang ◽

Yuanyang Nie ◽

Yongsheng Zhang ◽

...

Keyword(s):

Sensory Evaluation ◽

Network Structure ◽

Theoretical Basis ◽

Fermentation Process ◽

Three Dimensional ◽

Rheological Characteristics ◽

Fermentation Time ◽

Spherical Aggregate ◽

Dimensional Network ◽

Solid Liquid

The oat β-glucan (OG) was added into set-type yogurt as a functional ingredient, in order to evaluate effects on the rheological characteristics and microstructure of set-type yogurt. When the OG concentration increased from 0 to 0.3%, the WHC gradually increased. At 0.3% OG, the set-type yogurt had the highest WHC of 94.67%. Additionally, the WHC continuously decreased, reaching the lowest WHC (about 80%) at 0.5% OG. When 0.3% OG was added, the highest score of sensory evaluation was about 85. The rheological result showed that the fermentation process went through the changes as follows: solid → liquid → solid → liquid. The addition of 0.3% OG decreased the fermentation time of set-type yogurt by about 16 min, making yogurt more inclined to be liquid. The acidity of set-type yogurt with OG was slightly higher. The result of microstructure showed that the addition of OG destroyed the three-dimensional network structure of yogurt, and some spherical aggregate particles could be clearly observed at 0.3% OG. Overall, this study provided a theoretical basis for the application of OG in set-type yogurt.

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